Dual Markforged XY First Pass

This reverts commit 90f10e8943, reversing
changes made to a303ede8b9.

.devcontainer/Dockerfile

@@ -0,0 +1,29 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.187.0/containers/python-3/.devcontainer/base.Dockerfile
+
+# [Choice] Python version: 3, 3.9, 3.8, 3.7, 3.6
+ARG VARIANT="3.9.0-buster"
+FROM python:${VARIANT}
+
+# [Option] Install Node.js
+ARG INSTALL_NODE="true"
+ARG NODE_VERSION="lts/*"
+RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
+
+# [Optional] If your pip requirements rarely change, uncomment this section to add them to the image.
+# COPY requirements.txt /tmp/pip-tmp/
+# RUN pip3 --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
+#    && rm -rf /tmp/pip-tmp
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# [Optional] Uncomment this line to install global node packages.
+# RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1
+
+
+RUN pip install -U https://github.com/platformio/platformio-core/archive/develop.zip
+RUN platformio update
+# To get the test platforms
+RUN pip install PyYaml
+#ENV PATH /code/buildroot/bin/:/code/buildroot/tests/:${PATH}

.devcontainer/devcontainer.json

@@ -0,0 +1,51 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.187.0/containers/python-3
+{
+  "name": "Python 3",
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": "..",
+    "args": {
+      // Update 'VARIANT' to pick a Python version: 3, 3.6, 3.7, 3.8, 3.9
+      "VARIANT": "3.9.0-buster",
+      // Options
+      "INSTALL_NODE": "false",
+      "NODE_VERSION": "lts/*"
+    }
+  },
+
+  // Set *default* container specific settings.json values on container create.
+  "settings": {
+    "python.pythonPath": "/usr/local/bin/python",
+    "python.languageServer": "Pylance",
+    "python.linting.enabled": true,
+    "python.linting.pylintEnabled": true,
+    "python.formatting.autopep8Path": "/usr/local/py-utils/bin/autopep8",
+    "python.formatting.blackPath": "/usr/local/py-utils/bin/black",
+    "python.formatting.yapfPath": "/usr/local/py-utils/bin/yapf",
+    "python.linting.banditPath": "/usr/local/py-utils/bin/bandit",
+    "python.linting.flake8Path": "/usr/local/py-utils/bin/flake8",
+    "python.linting.mypyPath": "/usr/local/py-utils/bin/mypy",
+    "python.linting.pycodestylePath": "/usr/local/py-utils/bin/pycodestyle",
+    "python.linting.pydocstylePath": "/usr/local/py-utils/bin/pydocstyle",
+    "python.linting.pylintPath": "/usr/local/py-utils/bin/pylint"
+  },
+
+  // Add the IDs of extensions you want installed when the container is created.
+  "extensions": [
+    "ms-python.python",
+    "ms-python.vscode-pylance",
+    "platformio.platformio-ide",
+    "marlinfirmware.auto-build",
+    "editorconfig.editorconfig"
+  ],
+
+  // Use 'forwardPorts' to make a list of ports inside the container available locally.
+  // "forwardPorts": [],
+
+  // Use 'postCreateCommand' to run commands after the container is created.
+  // "postCreateCommand": "pip3 install --user -r requirements.txt",
+
+  // Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+  // "remoteUser": "vscode"
+}

.editorconfig

@@ -1,19 +1,33 @@
 # editorconfig.org
 root = true
 
+[*]
+trim_trailing_whitespace = true
+insert_final_newline = true
+
 [{*.patch,syntax_test_*}]
 trim_trailing_whitespace = false
 
+[{*.c,*.cpp,*.h,*.ino,*.py,Makefile}]
+end_of_line = lf
+
 [{*.c,*.cpp,*.h,*.ino}]
 charset = utf-8
-
-[{*.c,*.cpp,*.h,*.ino,Makefile}]
-trim_trailing_whitespace = true
-insert_final_newline = true
-end_of_line = lf
 indent_style = space
 indent_size = 2
 
-[{*.py,*.conf,*.sublime-project}]
+[{Makefile}]
+indent_style = tab
+indent_size = 2
+
+[*.md]
+# Two spaces at the end of the line means newline in Markdown
+trim_trailing_whitespace = false
+
+[{*.py}]
+indent_style = space
+indent_size = 4
+
+[{*.conf,*.sublime-project}]
 indent_style = tab
 indent_size = 4

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,184 @@
+name: 🪲 Report a bug
+description: Create a bug report to help improve Marlin Firmware
+title: "[BUG] (bug summary)"
+labels: ["Bug: Potential ?"]
+body:
+  - type: markdown
+    attributes:
+      value: >
+        Do you want to ask a question? Are you looking for support? Please use one of the [support links](https://github.com/MarlinFirmware/Marlin/issues/new/choose).
+
+  - type: markdown
+    attributes:
+      value: |
+        **Thank you for reporting a bug in Marlin Firmware!**
+
+        ## Before Reporting a Bug
+
+        - Read and understand Marlin's [Code of Conduct](https://github.com/MarlinFirmware/Marlin/blob/bugfix-2.1.x/.github/code_of_conduct.md). You are expected to comply with it, including treating everyone with respect.
+
+        - Test with the [`bugfix-2.1.x` branch](https://github.com/MarlinFirmware/Marlin/archive/bugfix-2.1.x.zip) to see whether the issue still exists.
+
+        ## Instructions
+
+        Please follow the instructions below. Failure to do so may result in your issue being closed. See [Contributing to Marlin](https://github.com/MarlinFirmware/Marlin/blob/bugfix-2.1.x/.github/contributing.md) for additional guidelines.
+
+        1. Provide a good title starting with [BUG].
+        2. Fill out all sections of this bug report form.
+        3. Always attach configuration files so we can build and test your setup.
+
+  - type: dropdown
+    attributes:
+      label: Did you test the latest `bugfix-2.1.x` code?
+      description: >-
+        Always try the latest code to make sure the issue you are reporting is not already fixed. To download
+        the latest code just [click this link](https://github.com/MarlinFirmware/Marlin/archive/bugfix-2.1.x.zip).
+      options:
+        - Yes, and the problem still exists.
+        - No, but I will test it now!
+    validations:
+      required: true
+
+  - type: markdown
+    attributes:
+      value: |
+        # Bug Details
+
+  - type: textarea
+    attributes:
+      label: Bug Description
+      description: >-
+        Describe the bug in this section. Tell us what you were trying to do and what
+        happened that you did not expect. Provide a clear and concise description of the
+        problem and include as many details as possible.
+
+        When pasting formatted text don't forget to put ` ``` ` (on its own line) before and after to make it readable.
+      placeholder: |
+        Marlin doesn't work.
+    validations:
+      required: true
+
+  - type: input
+    attributes:
+      label: Bug Timeline
+      description: Is this a new bug or an old issue? When did it first start?
+
+  - type: textarea
+    attributes:
+      label: Expected behavior
+      description: >-
+        What did you expect to happen?
+      placeholder: I expected it to move left.
+
+  - type: textarea
+    attributes:
+      label: Actual behavior
+      description: What actually happened instead?
+      placeholder: It moved right instead of left.
+
+  - type: textarea
+    attributes:
+      label: Steps to Reproduce
+      description: >-
+        Please describe the steps needed to reproduce the issue.
+      placeholder: |
+        1. [First Step] ...
+        2. [Second Step] ...
+        3. [and so on] ...
+
+  - type: markdown
+    attributes:
+      value: |
+        # Your Setup
+
+  - type: input
+    attributes:
+      label: Version of Marlin Firmware
+      description: "See the About Menu on the LCD or the output of `M115`. NOTE: For older releases we only patch critical bugs."
+    validations:
+      required: true
+
+  - type: input
+    attributes:
+      label: Printer model
+      description: Creality Ender-3, Prusa mini, or Kossel Delta?
+
+  - type: input
+    attributes:
+      label: Electronics
+      description: Stock electronics, upgrade board, or something else?
+
+  - type: input
+    attributes:
+      label: LCD/Controller
+      description: Some Marlin behaviors are determined by the controller. Describe your LCD/Controller model and version.
+
+  - type: input
+    attributes:
+      label: Other add-ons
+      description: Please list any other hardware add-ons that could be involved.
+
+  - type: dropdown
+    attributes:
+      label: Bed Leveling
+      description: What kind of bed leveling compensation are you using?
+      options:
+        - UBL Bilinear mesh
+        - ABL Bilinear mesh
+        - ABL Linear grid
+        - ABL 3-point
+        - MBL Manual Bed Leveling
+        - No Bed Leveling
+
+  - type: dropdown
+    attributes:
+      label: Your Slicer
+      description: Do you use Slic3r, Prusa Slicer, Simplify3D, IdeaMaker...?
+      options:
+        - Slic3r
+        - Simplify3D
+        - Prusa Slicer
+        - IdeaMaker
+        - Cura
+        - Other (explain below)
+
+  - type: dropdown
+    attributes:
+      label: Host Software
+      description: Do you use OctoPrint, Repetier Host, Pronterface...?
+      options:
+        - SD Card (headless)
+        - Repetier Host
+        - OctoPrint
+        - Pronterface
+        - Cura
+        - Same as my slicer
+        - Other (explain below)
+
+  - type: markdown
+    attributes:
+      value: |
+        # Attachments
+
+  - type: checkboxes
+    attributes:
+      label: Don't forget to include
+      options:
+        - label: A ZIP file containing your `Configuration.h` and `Configuration_adv.h`.
+          required: true
+
+  - type: markdown
+    attributes:
+      value: |
+        ### Optional items to include:
+        - 'Log output from the host. (`M111 S247` for maximum logging.)'
+        - Images or videos demonstrating the problem, if it helps to make it clear.
+        - A G-Code file that exposes the problem, if not affecting _all_ G-code.
+
+  - type: textarea
+    attributes:
+      label: Additional information & file uploads
+      description: >-
+        If you've made any other modifications to the firmware, please describe them in detail.
+
+        When pasting formatted text don't forget to put ` ``` ` (on its own line) before and after to make it readable.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,20 @@
+blank_issues_enabled: false
+contact_links:
+  - name: 📖 Marlin Documentation
+    url: https://marlinfw.org/
+    about: Lots of documentation on installing and using Marlin.
+  - name: 👤 MarlinFirmware Facebook group
+    url: https://www.facebook.com/groups/1049718498464482
+    about: Please ask and answer questions here.
+  - name: 🕹 Marlin on Discord
+    url: https://discord.gg/n5NJ59y
+    about: Join the Discord server for support and discussion.
+  - name: 🔗 Marlin Discussion Forum
+    url: https://reprap.org/forum/list.php?415
+    about: A searchable web forum hosted by RepRap dot org.
+  - name: 📺 Marlin Videos on YouTube
+    url: https://www.youtube.com/results?search_query=marlin+firmware
+    about: Tutorials and more from Marlin users all around the world. Great for new users!
+  - name: 💸 Want to donate?
+    url: https://www.thinkyhead.com/donate-to-marlin
+    about: Please take a look at the various options to support Marlin Firmware's development financially!

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -0,0 +1,44 @@
+name: ✨ Request a feature
+description: Request a new Marlin Firmware feature
+title: "[FR] (feature summary)"
+labels: ["T: Feature Request"]
+body:
+  - type: markdown
+    attributes:
+      value: >
+        Do you want to ask a question? Are you looking for support? Please use one of the [support links](https://github.com/MarlinFirmware/Marlin/issues/new/choose).
+
+  - type: markdown
+    attributes:
+      value: >
+        **Thank you for requesting a new Marlin Firmware feature!**
+
+        ## Before Requesting a Feature
+
+        - Read and understand Marlin's [Code of Conduct](https://github.com/MarlinFirmware/Marlin/blob/master/.github/code_of_conduct.md). You are expected to comply with it, including treating everyone with respect.
+
+        - Check the latest [`bugfix-2.1.x` branch](https://github.com/MarlinFirmware/Marlin/archive/bugfix-2.1.x.zip) to see if the feature already exists.
+
+        - Before you proceed with your request, please consider if it is necessary to make it into a firmware feature, or if it may be better suited for a slicer or host feature.
+
+  - type: textarea
+    attributes:
+      label: Is your feature request related to a problem? Please describe.
+      description: A clear description of the problem (e.g., "I need X but Marlin can't do it [...]").
+
+  - type: textarea
+    attributes:
+      label: Are you looking for hardware support?
+      description: Tell us the printer, board, or peripheral that needs support.
+
+  - type: textarea
+    attributes:
+      label: Describe the feature you want
+      description: A clear description of the feature and how you think it should work.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Additional context
+      description: Add any other context or screenshots about the feature request here.

.github/code_of_conduct.md

@@ -28,15 +28,9 @@ Project maintainers are responsible for clarifying the standards of acceptable b
 
 Project maintainers have the right and responsibility to remove, edit, or reject comments, commits, code, issues, and other contributions that are not aligned to this Code of Conduct, or to ban temporarily or permanently any contributor for other behaviors that they deem inappropriate, threatening, offensive, or harmful.
 
-## Scope
-
-This Code of Conduct applies both within project spaces and in public spaces when an individual is representing the project or its community. Examples of representing a project or community include using an official project e-mail address, posting via an official social media account, or acting as an appointed representative at an online or offline event. Representation of a project may be further defined and clarified by project maintainers.
-
 ## Enforcement
 
-Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by contacting the project team at [marlinfirmware@github.com](mailto:marlinfirmware@github.com). All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances. The project team is obligated to maintain confidentiality with regard to the reporter of an incident. Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good faith may face temporary or permanent repercussions as determined by other members of the project's leadership.
+Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by following GitHub's [reporting abuse or spam article](https://docs.github.com/en/communities/maintaining-your-safety-on-github/reporting-abuse-or-spam). All complaints will be reviewed and investigated and will result in a response that is deemed necessary and appropriate to the circumstances.
 
 ## Attribution
 

.github/contributing.md

@@ -26,16 +26,20 @@ The following is a set of guidelines for contributing to Marlin, hosted by the [
 
 ## Code of Conduct
 
-This project and everyone participating in it is governed by the [Marlin Code of Conduct](code_of_conduct.md). By participating, you are expected to uphold this code. Please report unacceptable behavior to [marlinfirmware@github.com](mailto:marlinfirmware@github.com).
+This project and everyone participating in it is governed by the [Marlin Code of Conduct](code_of_conduct.md). By participating, you are expected to uphold this code. Please report unacceptable behavior by following GitHub's [reporting abuse or spam article](https://docs.github.com/en/communities/maintaining-your-safety-on-github/reporting-abuse-or-spam).
 
 ## I don't want to read this whole thing I just have a question!!!
 
-> **Note:** Please don't file an issue to ask a question. You'll get faster results by using the resources below.
+> [!NOTE]
+> Please don't file an issue to ask a question. You'll get faster results by using the resources below.
 
 We have a Message Board and a Facebook group where our knowledgable user community can provide helpful advice if you have questions.
 
-* [Marlin RepRap forum](https://reprap.org/forum/list.php?415)
-* [MarlinFirmware on Facebook](https://www.facebook.com/groups/1049718498464482/)
+- [Marlin Documentation](https://marlinfw.org) - Official Marlin documentation
+- Facebook Group ["Marlin Firmware"](https://www.facebook.com/groups/1049718498464482/)
+- RepRap.org [Marlin Forum](https://forums.reprap.org/list.php?415)
+- Facebook Group ["Marlin Firmware for 3D Printers"](https://www.facebook.com/groups/3Dtechtalk/)
+- [Marlin Configuration](https://www.youtube.com/results?search_query=marlin+configuration) on YouTube
 
 If chat is more your speed, you can join the MarlinFirmware Discord server:
 
@@ -50,13 +54,14 @@ If chat is more your speed, you can join the MarlinFirmware Discord server:
 
 This section guides you through submitting a Bug Report for Marlin. Following these guidelines helps maintainers and the community understand your report, reproduce the behavior, and find related reports.
 
-Before creating a Bug Report, please test the "nightly" development branch, as you might find out that you don't need to create one. When you are creating a Bug Report, please [include as many details as possible](#how-do-i-submit-a-good-bug-report). Fill out [the required template](issue_template.md), the information it asks for helps us resolve issues faster.
+Before creating a Bug Report, please test the "nightly" development branch, as you might find out that you don't need to create one. When you are creating a Bug Report, please [include as many details as possible](#how-do-i-submit-a-good-bug-report). Fill out [the required template](ISSUE_TEMPLATE/bug_report.yml), the information it asks for helps us resolve issues faster.
 
-> **Note:** Regressions can happen. If you find a **Closed** issue that seems like your issue, go ahead and open a new issue and include a link to the original issue in the body of your new one. All you need to create a link is the issue number, preceded by #. For example, #8888.
+> [!NOTE]
+> Regressions can happen. If you find a **Closed** issue that seems like your issue, go ahead and open a new issue and include a link to the original issue in the body of your new one. All you need to create a link is the issue number, preceded by #. For example, #8888.
 
 #### How Do I Submit A (Good) Bug Report?
 
-Bugs are tracked as [GitHub issues](https://guides.github.com/features/issues/). Use the New Issue button to create an issue and provide the following information by filling in [the template](issue_template.md).
+Bugs are tracked as [GitHub issues](https://guides.github.com/features/issues/). Use the New Issue button to create an issue and provide the following information by filling in [the template](ISSUE_TEMPLATE/bug_report.yml).
 
 Explain the problem and include additional details to help maintainers reproduce the problem:
 
@@ -88,12 +93,12 @@ Include details about your configuration and environment:
 
 This section guides you through submitting a suggestion for Marlin, including completely new features and minor improvements to existing functionality. Following these guidelines helps maintainers and the community understand your suggestion and find related suggestions.
 
-Before creating a suggestion, please check [this list](#before-submitting-a-suggestion) as you might find out that you don't need to create one. When you are creating an enhancement suggestion, please [include as many details as possible](#how-do-i-submit-a-good-enhancement-suggestion). Fill in [the template](issue_template.md), including the steps that you imagine you would take if the feature you're requesting existed.
+Before creating a suggestion, please check [this list](https://github.com/MarlinFirmware/Marlin/issues?q=is%3Aopen+is%3Aissue+label%3A%22T%3A+Feature+Request%22) as you might find out that you don't need to create one. When you are creating an enhancement suggestion, please [include as many details as possible](#how-do-i-submit-a-good-feature-request). Fill in [the template](ISSUE_TEMPLATE/feature_request.yml), including the steps that you imagine you would take if the feature you're requesting existed.
 
 #### Before Submitting a Feature Request
 
 * **Check the [Marlin website](https://marlinfw.org/)** for tips — you might discover that the feature is already included. Most importantly, check if you're using [the latest version of Marlin](https://github.com/MarlinFirmware/Marlin/releases) and if you can get the desired behavior by changing [Marlin's config settings](https://marlinfw.org/docs/configuration/configuration.html).
-* **Perform a [cursory search](https://github.com/MarlinFirmware/Marlin/issues?q=is%3Aissue)** to see if the enhancement has already been suggested. If it has, add a comment to the existing issue instead of opening a new one.
+* **Perform a [cursory search](https://github.com/MarlinFirmware/Marlin/issues?q=is%3Aopen+is%3Aissue+label%3A%22T%3A+Feature+Request%22)** to see if the enhancement has already been suggested. If it has, add a comment to the existing issue instead of opening a new one.
 
 #### How Do I Submit A (Good) Feature Request?
 
@@ -116,7 +121,7 @@ Unsure where to begin contributing to Marlin? You can start by looking through t
 
 ### Pull Requests
 
-Pull Requests should always be targeted to working branches (e.g., `bugfix-1.1.x` and/or `bugfix-2.0.x`) and never to release branches (e.g., `1.1.x`). If this is your first Pull Request, please read our [Guide to Pull Requests](https://marlinfw.org/docs/development/getting_started_pull_requests.html) and Github's [Pull Request](https://help.github.com/articles/creating-a-pull-request/) documentation.
+Pull Requests should always be targeted to working branches (e.g., `bugfix-2.1.x` and/or `bugfix-1.1.x`) and never to release branches (e.g., `2.0.x` and/or `1.1.x`). If this is your first Pull Request, please read our [Guide to Pull Requests](https://marlinfw.org/docs/development/getting_started_pull_requests.html) and Github's [Pull Request](https://help.github.com/articles/creating-a-pull-request/) documentation.
 
 * Fill in [the required template](pull_request_template.md).
 * Don't include issue numbers in the PR title.

.github/issue_template.md

@@ -1,35 +0,0 @@
-<!--
-
-Have you read Marlin's Code of Conduct? By filing an Issue, you are expected to comply with it, including treating everyone with respect: https://github.com/MarlinFirmware/Marlin/blob/bugfix-2.0.x/.github/code_of_conduct.md
-
-Do you want to ask a question? Are you looking for support? Please don't post here. Instead use one of the following options:
-
-- The Marlin Firmware forum at https://reprap.org/forum/list.php?415
-- The MarlinFirmware Facebook Group at https://www.facebook.com/groups/1049718498464482/
-- The MarlinFirmware Discord Server at https://discord.gg/n5NJ59y.
-
-Before filing an issue be sure to test the latest "bugfix" branch to see whether the issue is already addressed.
-
--->
-
-### Description
-
-<!-- Description of the bug or requested feature -->
-
-### Steps to Reproduce
-
-<!-- If this is a Bug Report, please describe the steps needed to reproduce the issue -->
-
-1. [First Step]
-2. [Second Step]
-3. [and so on...]
-
-**Expected behavior:** [What you expect to happen]
-
-**Actual behavior:** [What actually happens]
-
-#### Additional Information
-
-* Include a ZIP file containing your `Configuration.h` and `Configuration_adv.h` files.
-* Provide pictures or links to videos that clearly demonstrate the issue.
-* See [How Can I Contribute](#how-can-i-contribute) for additional guidelines.

.github/lock.yml

@@ -1,40 +0,0 @@
-#
-# Configuration for Lock Threads - https://github.com/dessant/lock-threads-app
-#
-
-# Number of days of inactivity before a closed issue or pull request is locked
-daysUntilLock: 60
-
-# Skip issues and pull requests created before a given timestamp. Timestamp must
-# follow ISO 8601 (`YYYY-MM-DD`). Set to `false` to disable
-skipCreatedBefore: false
-
-# Issues and pull requests with these labels will be ignored. Set to `[]` to disable
-exemptLabels: [ 'no-locking' ]
-
-# Label to add before locking, such as `outdated`. Set to `false` to disable
-lockLabel: false
-
-# Comment to post before locking. Set to `false` to disable
-lockComment: >
-  This thread has been automatically locked since there has not been
-  any recent activity after it was closed. Please open a new issue for
-  related bugs.
-
-# Assign `resolved` as the reason for locking. Set to `false` to disable
-setLockReason: true
-
-# Limit to only `issues` or `pulls`
-# only: issues
-
-# Optionally, specify configuration settings just for `issues` or `pulls`
-# issues:
-#   exemptLabels:
-#     - help-wanted
-#   lockLabel: outdated
-
-# pulls:
-#   daysUntilLock: 30
-
-# Repository to extend settings from
-# _extends: repo

.github/pull_request_template.md

@@ -1,23 +1,33 @@
-### Requirements
+<!--
 
-* Filling out this template is required. Pull Requests without a clear description may be closed at the maintainers' discretion.
+Submitting a Pull Request
+
+- Please fill out all sections of this form. You can delete the helpful comments.
+- Pull Requests without clear information will take longer and may even be rejected.
+- We get a high volume of submissions so please be patient during review.
+
+-->
 
 ### Description
 
 <!--
 
-We must be able to understand your proposed change from this description. If we can't understand what the code will do from this description, the Pull Request may be closed at the maintainers' discretion. Keep in mind that the maintainer reviewing this PR may not be familiar with or have worked with the code recently, so please walk us through the concepts.
+Clearly describe the submitted changes with lots of details. Include images where helpful. Initial reviewers may not be familiar with the subject, so be as thorough as possible. You can use MarkDown syntax to improve readability with bullet lists, code blocks, and so on. PREVIEW and fix up formatting before submitting.
 
 -->
 
+### Requirements
+
+<!-- Does this PR require a specific board, LCD, etc.? -->
+
 ### Benefits
 
-<!-- What does this fix or improve? -->
+<!-- What does this PR fix or improve? -->
 
 ### Configurations
 
-<!-- Attach any Configuration.h, Configuration_adv.h, or platformio.ini files needed to compile/test your Pull Request. -->
+<!-- Attach Configurations ZIP and any other files needed to test this PR. -->
 
 ### Related Issues
 
-<!-- Whether this fixes a bug or fulfills a feature request, please list any related Issues here. -->
+<!-- Does this PR fix a bug or fulfill a Feature Request? Link related Issues here. -->

.github/workflows/auto-label.yml

@@ -0,0 +1,41 @@
+#
+# auto-label.yml
+# - Find all open issues without a label and a title containing "[BUG]".
+# - Apply the label "Bug: Potential ?" to these issues.
+#
+
+name: Label Old Bugs
+
+on:
+  schedule:
+  - cron: "30 8 * * *"
+
+jobs:
+  autolabel:
+    name: Auto Label
+    if: github.repository == 'MarlinFirmware/Marlin'
+    runs-on: ubuntu-latest
+    steps:
+    - name: Auto Label for [BUG]
+      uses: actions/github-script@v7
+      with:
+        script: |
+          // Get all open issues in this repository
+          const issueList = await github.rest.issues.listForRepo({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            state: 'open'
+          });
+          // Filter issues without labels that have a title containing '[BUG]'.
+          const matchingIssues = issueList.data.filter(
+            issue => issue.title.includes('[BUG]') && issue.labels.length === 0
+          );
+          // Process the first 50
+          for (const issue of matchingIssues.slice(0, 50)) {
+            await github.rest.issues.addLabels({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: issue.number,
+              labels: ['Bug: Potential ?']
+            });
+          }

.github/workflows/bump-date.yml

@@ -0,0 +1,59 @@
+#
+# bump-date.yml
+# Bump the distribution date once per day
+#
+
+name: Bump Distribution Date
+
+on:
+  schedule:
+    - cron: '0 */6 * * *'
+
+jobs:
+  bump_date:
+    name: Bump Distribution Date
+    if: github.repository == 'MarlinFirmware/Marlin'
+
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - name: Check out bugfix-2.0.x
+      uses: actions/checkout@v4
+      with:
+        ref: bugfix-2.0.x
+
+    - name: Bump Date (bugfix-2.0.x)
+      run: |
+        # Inline Bump Script
+        if [[ ! "$( git log -1 --pretty=%B )" =~ ^\[cron\] ]]; then
+          DIST=$( date +"%Y-%m-%d" )
+          eval "sed -E -i 's/(#define +STRING_DISTRIBUTION_DATE) .*$/\1 \"$DIST\"/g' Marlin/src/inc/Version.h" && \
+          eval "sed -E -i 's/(#define +STRING_DISTRIBUTION_DATE) .*$/\1 \"$DIST\"/g' Marlin/Version.h" && \
+          git config user.name "${GITHUB_ACTOR}" && \
+          git config user.email "${GITHUB_ACTOR}@users.noreply.github.com" && \
+          git add . && \
+          git commit -m "[cron] Bump distribution date ($DIST)" && \
+          git push
+        fi
+        exit 0
+
+    - name: Check out bugfix-2.1.x
+      uses: actions/checkout@v4
+      with:
+        ref: bugfix-2.1.x
+
+    - name: Bump Date (bugfix-2.1.x)
+      run: |
+        # Inline Bump Script
+        if [[ ! "$( git log -1 --pretty=%B )" =~ ^\[cron\] ]]; then
+          DIST=$( date +"%Y-%m-%d" )
+          eval "sed -E -i 's/(#define +STRING_DISTRIBUTION_DATE) .*$/\1 \"$DIST\"/g' Marlin/src/inc/Version.h" && \
+          eval "sed -E -i 's/(#define +STRING_DISTRIBUTION_DATE) .*$/\1 \"$DIST\"/g' Marlin/Version.h" && \
+          git config user.name "${GITHUB_ACTOR}" && \
+          git config user.email "${GITHUB_ACTOR}@users.noreply.github.com" && \
+          git add . && \
+          git commit -m "[cron] Bump distribution date ($DIST)" && \
+          git push
+        fi
+        exit 0

.github/workflows/check-pr.yml

@@ -0,0 +1,33 @@
+#
+# check-pr.yml
+# Close PRs directed at release branches
+#
+
+name: PR Bad Target
+
+on:
+  pull_request_target:
+    types: [opened]
+    branches:
+    - 1.0.x
+    - 1.1.x
+    - 2.0.x
+
+jobs:
+  bad_target:
+    name: PR Bad Target
+    if: github.repository == 'MarlinFirmware/Marlin'
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: superbrothers/close-pull-request@v3
+      with:
+        comment: >
+          Thanks for your contribution! Unfortunately we can't accept PRs directed at release branches. We make patches to the bugfix branches and only later do we push them out as releases.
+
+          Please redo this PR starting with the `bugfix-2.1.x` branch and be careful to target `bugfix-2.1.x` when resubmitting the PR. Patches may also target `bugfix-2.0.x` if they are specifically for 2.0.9.x.
+
+          It may help to set your fork's default branch to `bugfix-2.1.x`.
+
+          See [this page](https://marlinfw.org/docs/development/getting_started_pull_requests.html) for full instructions.

.github/workflows/ci-build-tests.yml

@@ -1,31 +1,37 @@
 #
-# test-builds.yml
+# ci-build-tests.yml
 # Do test builds to catch compile errors
 #
 
-name: CI
+name: CI - Build Tests
 
 on:
   pull_request:
     branches:
-    - bugfix-2.0.x
+    - bugfix-2.1.x
+    - 2.1.x
     paths-ignore:
     - config/**
     - data/**
     - docs/**
+    - test/**
+    - Marlin/tests/**
     - '**/*.md'
   push:
     branches:
-    - bugfix-2.0.x
+    - bugfix-2.1.x
+    - 2.1.x
     paths-ignore:
     - config/**
     - data/**
     - docs/**
+    - test/**
+    - Marlin/tests/**
     - '**/*.md'
 
 jobs:
   test_builds:
-    name: Run All Tests
+    name: Build Test
     if: github.repository == 'MarlinFirmware/Marlin'
 
     runs-on: ubuntu-latest
@@ -33,90 +39,124 @@ jobs:
     strategy:
       matrix:
         test-platform:
-        # Base Environments
 
-        - DUE
-        - DUE_archim
-        - esp32
+        # Native
         - linux_native
+
+        # AVR
         - mega2560
-        - at90usb1286_dfu
-        - teensy31
-        - teensy35
-        - teensy41
-        - SAMD51_grandcentral_m4
-
-        # Extended AVR Environments
-
-        - FYSETC_F6
         - mega1280
+        - at90usb1286_dfu
+
+        # AVR Extended
+        - FYSETC_F6
+        - melzi_optiboot
         - rambo
         - sanguino1284p
         - sanguino644p
 
-        # STM32F1 (Maple) Environments
+        # SAM3X8E
+        - DUE
+        - DUE_archim
 
-        #- STM32F103RC_btt_maple
-        - STM32F103RC_btt_USB_maple
-        - STM32F103RC_fysetc_maple
-        - STM32F103RC_meeb
-        - jgaurora_a5s_a1_maple
-        - STM32F103VE_longer_maple
-        #- mks_robin_maple
-        - mks_robin_lite_maple
-        - mks_robin_pro_maple
-        #- mks_robin_nano35_maple
-        #- STM32F103RE_creality_maple
-        - STM32F103VE_ZM3E4V2_USB_maple
+        # SAMD21
+        - SAMD51_grandcentral_m4
+        - SAMD21_minitronics20
 
-        # STM32 (ST) Environments
+        # ESP32
+        - esp32
+        - mks_tinybee
 
+        # Teensy 2
+        #- at90usb1286_cdc
+
+        # Teensy MK20DX256
+        - teensy31
+
+        # Teensy MK64FX512, MK66FX1M0
+        - teensy35
+
+        # Teensy IMXRT1062DVx6A
+        - teensy41
+
+        # STM32F0
+        - malyan_M300
+        - STM32F070CB_malyan
+        - STM32F070RB_malyan
+
+        # STM32F1
+        - chitu_f103
+        - mks_robin
+        - mks_robin_nano_v1v2
+        - PANDA_PI_V29
         - STM32F103RC_btt
-        #- STM32F103RC_btt_USB
+        - STM32F103RC_fysetc
         - STM32F103RE_btt
         - STM32F103RE_btt_USB
         - STM32F103RE_creality
         - STM32F103VE_longer
-        - STM32F407VE_black
-        - STM32F401VE_STEVAL
-        - BIGTREE_BTT002
-        - BIGTREE_SKR_PRO
-        - BIGTREE_GTR_V1_0
-        - mks_robin
+        #- mks_robin_mini
+        #- mks_robin_nano_v1_3_f4_usbmod
+        #- mks_robin_nano_v1v2_usbmod
+        #- STM32F103CB_malyan
+        #- STM32F103RC_btt_USB
+        #- STM32F103RE
+
+        # STM32F4
         - ARMED
-        - FYSETC_S6
-        - STM32F070CB_malyan
-        - STM32F070RB_malyan
-        - malyan_M300
+        - BIGTREE_BTT002
+        - BIGTREE_GTR_V1_0
+        - BIGTREE_SKR_PRO
         - FLYF407ZG
-        - rumba32
-        - LERDGEX
+        - FYSETC_S6
         - LERDGEK
-        - mks_robin_nano35
+        - LERDGEX
+        - mks_robin_pro2
+        - Opulo_Lumen_REV3
+        - rumba32
+        - STM32F401RC_creality
+        - STM32F407VE_black
+        - I3DBEEZ9_V1
+
+        # STM32F7
         - NUCLEO_F767ZI
         - REMRAM_V1
+
+        # STM32H7
         - BTT_SKR_SE_BX
-        - chitu_f103
-        - Index_Mobo_Rev03
+        - STM32H743VI_btt
 
-        # Put lengthy tests last
+        # STM32F1 (Maple)
+        - jgaurora_a5s_a1_maple
+        - mks_robin_lite_maple
+        - mks_robin_pro_maple
+        - STM32F103RC_btt_USB_maple
+        - STM32F103RC_fysetc_maple
+        - STM32F103RC_meeb_maple
+        - STM32F103VE_longer_maple
+        - STM32F103VE_ZM3E4V2_USB_maple
+        #- mks_robin_maple
+        #- mks_robin_nano_v1v2_maple
+        #- STM32F103RC_btt_maple
+        #- STM32F103RE_creality_maple
 
+        # STM32G0
+        - STM32G0B1RE_btt
+
+        # HC32
+        - HC32F460C_aquila_101
+
+        # LPC176x - Lengthy tests
         - LPC1768
         - LPC1769
 
-        # Non-working environment tests
-        #- at90usb1286_cdc
-        #- STM32F103CB_malyan
-        #- STM32F103RE
-        #- mks_robin_mini
-
     steps:
 
     - name: Check out the PR
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Cache pip
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.cache/pip
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
@@ -124,21 +164,22 @@ jobs:
           ${{ runner.os }}-pip-
 
     - name: Cache PlatformIO
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.platformio
         key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
 
-    - name: Select Python 3.7
-      uses: actions/setup-python@v3
+    - name: Select Python 3.9
+      uses: actions/setup-python@v5
       with:
-        python-version: '3.7' # Version range or exact version of a Python version to use, using semvers version range syntax.
-        architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified
+        python-version: '3.9'
+        architecture: 'x64'
 
     - name: Install PlatformIO
       run: |
-        pip install -U https://github.com/platformio/platformio-core/archive/v5.2.5.zip
-        platformio update
+        pip install -U platformio
+        pio upgrade --dev
+        pio pkg update --global
 
     - name: Run ${{ matrix.test-platform }} Tests
       run: |

.github/workflows/ci-unit-tests.yml

@@ -0,0 +1,73 @@
+#
+# ci-unit-tests.yml
+# Build and execute unit tests to catch functional issues in code
+#
+
+name: CI - Unit Tests
+
+on:
+  pull_request:
+    branches:
+    - bugfix-2.1.x
+    # Cannot be enabled on 2.1.x until it contains the unit test framework
+    #- 2.1.x
+    paths-ignore:
+    - config/**
+    - data/**
+    - docs/**
+    - '**/*.md'
+  push:
+    branches:
+    - bugfix-2.1.x
+    # Cannot be enabled on 2.1.x until it contains the unit test framework
+    #- 2.1.x
+    paths-ignore:
+    - config/**
+    - data/**
+    - docs/**
+    - '**/*.md'
+
+jobs:
+  # This runs all unit tests as a single job. While it should be possible to break this up into
+  # multiple jobs, they currently run quickly and finish long before the compilation tests.
+  run_unit_tests:
+    name: Unit Test
+    # These tests will only be able to run on the bugfix-2.1.x branch, until the next release
+    # pulls them into additional branches.
+    if: github.repository == 'MarlinFirmware/Marlin'
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out the PR
+      uses: actions/checkout@v4
+
+    - name: Cache pip
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+
+    - name: Cache PlatformIO
+      uses: actions/cache@v4
+      with:
+        path: ~/.platformio
+        key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
+
+    - name: Select Python 3.9
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.9'
+        architecture: 'x64'
+
+    - name: Install PlatformIO
+      run: |
+        pip install -U platformio
+        pio upgrade --dev
+        pio pkg update --global
+
+    - name: Run All Unit Tests
+      run: |
+        make unit-test-all-local

.github/workflows/ci-validate-pins.yml

@@ -0,0 +1,51 @@
+#
+# ci-validate-pins.yml
+# Validate that all of the pins files are unchanged by pinsformat.py
+#
+
+name: CI - Validate Pins Files
+
+on:
+  pull_request:
+    branches:
+    - bugfix-2.1.x
+    # Cannot be enabled on 2.1.x until it contains the unit test framework
+    #- 2.1.x
+    paths:
+    - 'Marlin/src/pins/*/**'
+  push:
+    branches:
+    - bugfix-2.1.x
+    # Cannot be enabled on 2.1.x until it contains the unit test framework
+    #- 2.1.x
+    paths:
+    - 'Marlin/src/pins/*/**'
+
+jobs:
+  validate_pins_files:
+    name: Validate Pins Files
+    if: github.repository == 'MarlinFirmware/Marlin'
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out the PR
+      uses: actions/checkout@v4
+
+    - name: Cache pip
+      uses: actions/cache@v4
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+
+    - name: Select Python 3.9
+      uses: actions/setup-python@v5
+      with:
+        python-version: '3.9'
+        architecture: 'x64'
+
+    - name: Validate all pins files
+      run: |
+        make validate-pins -j

.github/workflows/clean-closed.yml

@@ -0,0 +1,40 @@
+#
+# clean-closed.yml
+# Remove obsolete labels when an Issue or PR is closed
+#
+
+name: Clean Closed
+
+on:
+  pull_request:
+    types: [closed]
+  issues:
+    types: [closed]
+
+jobs:
+  remove_label:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        label:
+          - "S: Don't Merge"
+          - "S: Hold for 2.1"
+          - "S: Please Merge"
+          - "S: Please Test"
+          - "help wanted"
+          - "Bug: Potential ?"
+          - "Needs: Discussion"
+          - "Needs: Documentation"
+          - "Needs: More Data"
+          - "Needs: Patch"
+          - "Needs: Testing"
+          - "Needs: Work"
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Remove Labels
+        uses: actions-ecosystem/action-remove-labels@v1
+        with:
+          github_token: ${{ github.token }}
+          labels: ${{ matrix.label }}

.github/workflows/close-stale.yml

@@ -0,0 +1,40 @@
+#
+# close-stale.yml
+# Close open issues after a period of inactivity
+#
+
+name: Close Stale Issues
+
+on:
+  schedule:
+  - cron: "22 1 * * *"
+
+jobs:
+  stale:
+    name: Close Stale Issues
+    if: github.repository == 'MarlinFirmware/Marlin'
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/stale@v9
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        stale-issue-message: |
+          Greetings from the Marlin AutoBot!
+          This issue has had no activity for the last 90 days.
+          Do you still see this issue with the latest `bugfix-2.1.x` code?
+          Please add a reply within 14 days or this issue will be automatically closed.
+          To keep a confirmed issue open we can also add a "Bug: Confirmed" tag.
+
+          Disclaimer: This is an open community project with lots of activity and limited
+          resources. The main project contributors will do a bug sweep ahead of the next
+          release, but any skilled member of the community may jump in at any time to fix
+          this issue. That can take a while depending on our busy lives so please be patient,
+          and take advantage of other resources such as the MarlinFirmware Discord to help
+          solve the issue.
+        days-before-stale: 90
+        days-before-close: 14
+        stale-issue-label: 'stale-closing-soon'
+        exempt-all-assignees: true
+        exempt-issue-labels: 'Bug: Confirmed !,T: Feature Request,Needs: More Data,Needs: Discussion,Needs: Documentation,Needs: Patch,Needs: Work,Needs: Testing,help wanted,no-locking'

.github/workflows/lock-closed.yml

@@ -0,0 +1,32 @@
+#
+# lock-closed.yml
+# Lock closed issues after a period of inactivity
+#
+
+name: Lock Closed Issues
+
+on:
+  schedule:
+    - cron: '0 1/13 * * *'
+
+jobs:
+  lock:
+    name: Lock Closed Issues
+    if: github.repository == 'MarlinFirmware/Marlin'
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: dessant/lock-threads@v5
+      with:
+        github-token: ${{ github.token }}
+        process-only: 'issues'
+        issue-inactive-days: '60'
+        exclude-issue-created-before: ''
+        exclude-any-issue-labels: 'no-locking'
+        add-issue-labels: ''
+        issue-comment: >
+          This issue has been automatically locked since there
+          has not been any recent activity after it was closed.
+          Please open a new issue for related bugs.
+        issue-lock-reason: ''

.github/workflows/unlock-reopened.yml

@@ -0,0 +1,22 @@
+#
+# unlock-reopened.yml
+# Unlock an issue whenever it is re-opened
+#
+
+name: "Unlock reopened issue"
+
+on:
+  issues:
+    types: [reopened]
+
+jobs:
+  unlock:
+    name: Unlock Reopened
+    if: github.repository == 'MarlinFirmware/Marlin'
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: OSDKDev/unlock-issues@v1.1
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"

.gitignore

@@ -21,35 +21,21 @@
 
 # Generated files
 _Version.h
-bdf2u8g
+bdf2u8g.exe
+genpages.exe
 marlin_config.json
 mczip.h
+language*.csv
+out-csv/
+out-language/
 *.gen
 *.sublime-workspace
 
-#
 # OS
-#
 applet/
 .DS_Store
 
-#
-# Misc
-#
-*~
-*.orig
-*.rej
-*.bak
-*.idea
-*.i
-*.ii
-*.swp
-tags
-
-#
-# C++
-#
-# Compiled Object files
+# Compiled C++ Object files
 *.slo
 *.lo
 *.o
@@ -80,10 +66,7 @@ tags
 *.out
 *.app
 
-#
-# C
-#
-# Object files
+# Compiled C Object files
 *.o
 *.ko
 *.obj
@@ -143,13 +126,16 @@ vc-fileutils.settings
 .vscode/*
 !.vscode/extensions.json
 
-#Simulation
+# Simulation files
 imgui.ini
 eeprom.dat
 spi_flash.bin
+fs.img
 
-#cmake
+# CMake
+buildroot/share/cmake/*
 CMakeLists.txt
+!buildroot/share/cmake/CMakeLists.txt
 src/CMakeLists.txt
 CMakeListsPrivate.txt
 build/
@@ -169,3 +155,16 @@ __pycache__
 
 # IOLogger logs
 *_log.csv
+
+# Misc.
+*~
+*.orig
+*.rej
+*.bak
+*.idea
+*.i
+*.ii
+*.swp
+tags
+*.logs
+*.bak

.vscode/extensions.json

@@ -6,6 +6,7 @@
         "platformio.platformio-ide"
     ],
     "unwantedRecommendations": [
+        "ms-vscode-remote.remote-containers",
         "ms-vscode.cpptools-extension-pack"
     ]
 }

Makefile

@@ -1,11 +1,24 @@
+SCRIPTS_DIR := buildroot/share/scripts
+CONTAINER_RT_BIN := docker
+CONTAINER_RT_OPTS := --rm -v $(PWD):/code -v platformio-cache:/root/.platformio
+CONTAINER_IMAGE := marlin-dev
+UNIT_TEST_CONFIG ?= default
+
 help:
 	@echo "Tasks for local development:"
-	@echo "* tests-single-ci:             Run a single test from inside the CI"
-	@echo "* tests-single-local:          Run a single test locally"
-	@echo "* tests-single-local-docker:   Run a single test locally, using docker-compose"
-	@echo "* tests-all-local:             Run all tests locally"
-	@echo "* tests-all-local-docker:      Run all tests locally, using docker-compose"
-	@echo "* setup-local-docker:          Setup local docker-compose"
+	@echo "make marlin                    : Build marlin for the configured board"
+	@echo "make format-pins -j            : Reformat all pins files (-j for parallel execution)"
+	@echo "make validate-pins -j          : Validate all pins files, fails if any require reformatting"
+	@echo "make tests-single-ci           : Run a single test from inside the CI"
+	@echo "make tests-single-local        : Run a single test locally"
+	@echo "make tests-single-local-docker : Run a single test locally, using docker"
+	@echo "make tests-all-local           : Run all tests locally"
+	@echo "make tests-all-local-docker    : Run all tests locally, using docker"
+	@echo "make unit-test-single-local    : Run unit tests for a single config locally"
+	@echo "make unit-test-single-local-docker : Run unit tests for a single config locally, using docker"
+	@echo "make unit-test-all-local      : Run all code tests locally"
+	@echo "make unit-test-all-local-docker : Run all code tests locally, using docker"
+	@echo "make setup-local-docker        : Setup local docker using buildx"
 	@echo ""
 	@echo "Options for testing:"
 	@echo "  TEST_TARGET          Set when running tests-single-*, to select the"
@@ -15,38 +28,77 @@ help:
 	@echo "                       run on GitHub CI"
 	@echo "  ONLY_TEST            Limit tests to only those that contain this, or"
 	@echo "                       the index of the test (1-based)"
+	@echo "  UNIT_TEST_CONFIG     Set the name of the config from the test folder, without"
+	@echo "                       the leading number. Default is 'default'". Used with the
+	@echo "                       unit-test-single-* tasks"
 	@echo "  VERBOSE_PLATFORMIO   If you want the full PIO output, set any value"
 	@echo "  GIT_RESET_HARD       Used by CI: reset all local changes. WARNING:"
 	@echo "                       THIS WILL UNDO ANY CHANGES YOU'VE MADE!"
-.PHONY: help
+
+marlin:
+	./buildroot/bin/mftest -a
+.PHONY: marlin
 
 tests-single-ci:
 	export GIT_RESET_HARD=true
-	$(MAKE) tests-single-local TEST_TARGET=$(TEST_TARGET)
-.PHONY: tests-single-ci
+	$(MAKE) tests-single-local TEST_TARGET=$(TEST_TARGET) PLATFORMIO_BUILD_FLAGS=-DGITHUB_ACTION
 
 tests-single-local:
 	@if ! test -n "$(TEST_TARGET)" ; then echo "***ERROR*** Set TEST_TARGET=<your-module> or use make tests-all-local" ; return 1; fi
-	export PATH=./buildroot/bin/:./buildroot/tests/:${PATH} \
+	export PATH="./buildroot/bin/:./buildroot/tests/:${PATH}" \
 	  && export VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) \
 	  && run_tests . $(TEST_TARGET) "$(ONLY_TEST)"
-.PHONY: tests-single-local
 
 tests-single-local-docker:
 	@if ! test -n "$(TEST_TARGET)" ; then echo "***ERROR*** Set TEST_TARGET=<your-module> or use make tests-all-local-docker" ; return 1; fi
-	docker-compose run --rm marlin $(MAKE) tests-single-local TEST_TARGET=$(TEST_TARGET) VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) GIT_RESET_HARD=$(GIT_RESET_HARD) ONLY_TEST="$(ONLY_TEST)"
-.PHONY: tests-single-local-docker
+	@if ! $(CONTAINER_RT_BIN) images -q $(CONTAINER_IMAGE) > /dev/null ; then $(MAKE) setup-local-docker ; fi
+	$(CONTAINER_RT_BIN) run $(CONTAINER_RT_OPTS) $(CONTAINER_IMAGE) make tests-single-local TEST_TARGET=$(TEST_TARGET) VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) GIT_RESET_HARD=$(GIT_RESET_HARD) ONLY_TEST="$(ONLY_TEST)"
 
 tests-all-local:
-	export PATH=./buildroot/bin/:./buildroot/tests/:${PATH} \
+	@python -c "import yaml" 2>/dev/null || (echo 'pyyaml module is not installed. Install it with "python -m pip install pyyaml"' && exit 1)
+	export PATH="./buildroot/bin/:./buildroot/tests/:${PATH}" \
 	  && export VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) \
-	  && for TEST_TARGET in $$(./get_test_targets.py) ; do echo "Running tests for $$TEST_TARGET" ; run_tests . $$TEST_TARGET ; done
-.PHONY: tests-all-local
+	  && for TEST_TARGET in $$(python $(SCRIPTS_DIR)/get_test_targets.py) ; do \
+	    if [ "$$TEST_TARGET" = "linux_native" ] && [ "$$(uname)" = "Darwin" ]; then \
+	      echo "Skipping tests for $$TEST_TARGET on macOS" ; \
+	      continue ; \
+	    fi ; \
+	    echo "Running tests for $$TEST_TARGET" ; \
+	    run_tests . $$TEST_TARGET || exit 1 ; \
+	    sleep 5; \
+	  done
 
 tests-all-local-docker:
-	docker-compose run --rm marlin $(MAKE) tests-all-local VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) GIT_RESET_HARD=$(GIT_RESET_HARD)
-.PHONY: tests-all-local-docker
+	@if ! $(CONTAINER_RT_BIN) images -q $(CONTAINER_IMAGE) > /dev/null ; then $(MAKE) setup-local-docker ; fi
+	$(CONTAINER_RT_BIN) run $(CONTAINER_RT_OPTS) $(CONTAINER_IMAGE) make tests-all-local VERBOSE_PLATFORMIO=$(VERBOSE_PLATFORMIO) GIT_RESET_HARD=$(GIT_RESET_HARD)
+
+unit-test-single-local:
+	platformio run -t marlin_$(UNIT_TEST_CONFIG) -e linux_native_test
+
+unit-test-single-local-docker:
+	@if ! $(CONTAINER_RT_BIN) images -q $(CONTAINER_IMAGE) > /dev/null ; then $(MAKE) setup-local-docker ; fi
+	$(CONTAINER_RT_BIN) run $(CONTAINER_RT_OPTS)  $(CONTAINER_IMAGE) make unit-test-single-local UNIT_TEST_CONFIG=$(UNIT_TEST_CONFIG)
+
+unit-test-all-local:
+	platformio run -t test-marlin -e linux_native_test
+
+unit-test-all-local-docker:
+	@if ! $(CONTAINER_RT_BIN) images -q $(CONTAINER_IMAGE) > /dev/null ; then $(MAKE) setup-local-docker ; fi
+	$(CONTAINER_RT_BIN) run $(CONTAINER_RT_OPTS)  $(CONTAINER_IMAGE) make unit-test-all-local
 
 setup-local-docker:
-	docker-compose build
-.PHONY: setup-local-docker
+	$(CONTAINER_RT_BIN) buildx build -t $(CONTAINER_IMAGE) -f docker/Dockerfile .
+
+PINS := $(shell find Marlin/src/pins -mindepth 2 -name '*.h')
+
+.PHONY: $(PINS) format-pins validate-pins
+
+$(PINS): %:
+	@echo "Formatting $@"
+	@python $(SCRIPTS_DIR)/pinsformat.py $< $@
+
+format-pins: $(PINS)
+
+validate-pins: format-pins
+	@echo "Validating pins files"
+	@git diff --exit-code || (git status && echo "\nError: Pins files are not formatted correctly. Run \"make format-pins\" to fix.\n" && exit 1)

Marlin/Makefile

@@ -63,8 +63,8 @@ HARDWARE_MOTHERBOARD ?= 1020
 
 ifeq ($(OS),Windows_NT)
   # Windows
-  ARDUINO_INSTALL_DIR ?= ${HOME}/Arduino
-  ARDUINO_USER_DIR ?= ${HOME}/Arduino
+  ARDUINO_INSTALL_DIR ?= ${HOME}/AppData/Local/Arduino
+  ARDUINO_USER_DIR ?= ${HOME}/Documents/Arduino
 else
   UNAME_S := $(shell uname -s)
   ifeq ($(UNAME_S),Linux)
@@ -82,11 +82,11 @@ endif
 
 # Arduino source install directory, and version number
 # On most linuxes this will be /usr/share/arduino
-ARDUINO_INSTALL_DIR  ?= ${HOME}/Arduino
-ARDUINO_VERSION      ?= 106
+ARDUINO_INSTALL_DIR  ?= ${HOME}/AppData/Local/Arduino       # C:/Users/${USERNAME}/AppData/Local/Arduino
+ARDUINO_VERSION      ?= 10819
 
 # The installed Libraries are in the User folder
-ARDUINO_USER_DIR ?= ${HOME}/Arduino
+ARDUINO_USER_DIR ?= ${HOME}/Documents/Arduino
 
 # You can optionally set a path to the avr-gcc tools.
 # Requires a trailing slash. For example, /usr/local/avr-gcc/bin/
@@ -109,7 +109,7 @@ LIQUID_TWI2        ?= 0
 # This defines if Wire is needed
 WIRE               ?= 0
 
-# This defines if Tone is needed (i.e SPEAKER is defined in Configuration.h)
+# This defines if Tone is needed (i.e., SPEAKER is defined in Configuration.h)
 # Disabling this (and SPEAKER) saves approximately 350 bytes of memory.
 TONE               ?= 1
 
@@ -307,133 +307,22 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1154)
 else ifeq ($(HARDWARE_MOTHERBOARD),1155)
 # Tenlog D3 Hero IDEX printer
 else ifeq ($(HARDWARE_MOTHERBOARD),1156)
-# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Fan, Bed)
+# Tenlog D3,5,6 Pro IDEX printers
 else ifeq ($(HARDWARE_MOTHERBOARD),1157)
-# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Hotend2, Bed)
+# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Fan, Bed)
 else ifeq ($(HARDWARE_MOTHERBOARD),1158)
-# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend, Fan0, Fan1, Bed)
+# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend0, Hotend1, Hotend2, Bed)
 else ifeq ($(HARDWARE_MOTHERBOARD),1159)
-# Longer LK1 PRO / Alfawise U20 Pro (PRO version)
+# Ramps S 1.2 by Sakul.cz (Power outputs: Hotend, Fan0, Fan1, Bed)
 else ifeq ($(HARDWARE_MOTHERBOARD),1160)
-# Longer LKx PRO / Alfawise Uxx Pro (PRO version)
+# Longer LK1 PRO / Alfawise U20 Pro (PRO version)
 else ifeq ($(HARDWARE_MOTHERBOARD),1161)
-
-
-# 3Drag Controller
-else ifeq ($(HARDWARE_MOTHERBOARD),1100)
-# Velleman K8200 Controller (derived from 3Drag Controller)
-else ifeq ($(HARDWARE_MOTHERBOARD),1101)
-# Velleman K8400 Controller (derived from 3Drag Controller)
-else ifeq ($(HARDWARE_MOTHERBOARD),1102)
-# Velleman K8600 Controller (Vertex Nano)
-else ifeq ($(HARDWARE_MOTHERBOARD),1103)
-# Velleman K8800 Controller (Vertex Delta)
-else ifeq ($(HARDWARE_MOTHERBOARD),1104)
-# 2PrintBeta BAM&DICE with STK drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1105)
-# 2PrintBeta BAM&DICE Due with STK drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1106)
-# MKS BASE v1.0
-else ifeq ($(HARDWARE_MOTHERBOARD),1107)
-# MKS v1.4 with A4982 stepper drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1108)
-# MKS v1.5 with Allegro A4982 stepper drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1109)
-# MKS v1.6 with Allegro A4982 stepper drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1110)
-# MKS BASE 1.0 with Heroic HR4982 stepper drivers
-else ifeq ($(HARDWARE_MOTHERBOARD),1111)
-# MKS GEN v1.3 or 1.4
-else ifeq ($(HARDWARE_MOTHERBOARD),1112)
-# MKS GEN L
-else ifeq ($(HARDWARE_MOTHERBOARD),1113)
-# zrib V2.0 control board (Chinese RAMPS replica)
-else ifeq ($(HARDWARE_MOTHERBOARD),1114)
-# BigTreeTech or BIQU KFB2.0
-else ifeq ($(HARDWARE_MOTHERBOARD),1115)
-# Felix 2.0+ Electronics Board (RAMPS like)
-else ifeq ($(HARDWARE_MOTHERBOARD),1116)
-# Invent-A-Part RigidBoard
-else ifeq ($(HARDWARE_MOTHERBOARD),1117)
-# Invent-A-Part RigidBoard V2
-else ifeq ($(HARDWARE_MOTHERBOARD),1118)
-# Sainsmart 2-in-1 board
-else ifeq ($(HARDWARE_MOTHERBOARD),1119)
-# Ultimaker
-else ifeq ($(HARDWARE_MOTHERBOARD),1120)
-# Ultimaker (Older electronics. Pre 1.5.4. This is rare)
-else ifeq ($(HARDWARE_MOTHERBOARD),1121)
-  MCU              ?= atmega1280
-  PROG_MCU         ?= m1280
-
-# Azteeg X3
-else ifeq ($(HARDWARE_MOTHERBOARD),1122)
-# Azteeg X3 Pro
-else ifeq ($(HARDWARE_MOTHERBOARD),1123)
-# Ultimainboard 2.x (Uses TEMP_SENSOR 20)
-else ifeq ($(HARDWARE_MOTHERBOARD),1124)
-# Rumba
-else ifeq ($(HARDWARE_MOTHERBOARD),1125)
-# Raise3D Rumba
-else ifeq ($(HARDWARE_MOTHERBOARD),1126)
-# Rapide Lite RL200 Rumba
-else ifeq ($(HARDWARE_MOTHERBOARD),1127)
-# Formbot T-Rex 2 Plus
-else ifeq ($(HARDWARE_MOTHERBOARD),1128)
-# Formbot T-Rex 3
-else ifeq ($(HARDWARE_MOTHERBOARD),1129)
-# Formbot Raptor
-else ifeq ($(HARDWARE_MOTHERBOARD),1130)
-# Formbot Raptor 2
-else ifeq ($(HARDWARE_MOTHERBOARD),1131)
-# bq ZUM Mega 3D
-else ifeq ($(HARDWARE_MOTHERBOARD),1132)
-# MakeBoard Mini v2.1.2 is a control board sold by MicroMake
-else ifeq ($(HARDWARE_MOTHERBOARD),1133)
-# TriGorilla Anycubic version 1.3 based on RAMPS EFB
-else ifeq ($(HARDWARE_MOTHERBOARD),1134)
-# TriGorilla Anycubic version 1.4 based on RAMPS EFB
-else ifeq ($(HARDWARE_MOTHERBOARD),1135)
-# TriGorilla Anycubic version 1.4 Rev 1.1
-else ifeq ($(HARDWARE_MOTHERBOARD),1136)
-# Creality: Ender-4, CR-8
-else ifeq ($(HARDWARE_MOTHERBOARD),1137)
-# Creality: CR10S, CR20, CR-X
-else ifeq ($(HARDWARE_MOTHERBOARD),1138)
-# Dagoma F5
-else ifeq ($(HARDWARE_MOTHERBOARD),1139)
-# FYSETC F6 1.3
-else ifeq ($(HARDWARE_MOTHERBOARD),1140)
-# FYSETC F6 1.5
-else ifeq ($(HARDWARE_MOTHERBOARD),1141)
-# Duplicator i3 Plus
-else ifeq ($(HARDWARE_MOTHERBOARD),1142)
-# VORON
-else ifeq ($(HARDWARE_MOTHERBOARD),1143)
-# TRONXY V3 1.0
-else ifeq ($(HARDWARE_MOTHERBOARD),1144)
-# Z-Bolt X Series
-else ifeq ($(HARDWARE_MOTHERBOARD),1145)
-# TT OSCAR
-else ifeq ($(HARDWARE_MOTHERBOARD),1146)
-# Overlord/Overlord Pro
-else ifeq ($(HARDWARE_MOTHERBOARD),1147)
-# ADIMLab Gantry v1
-else ifeq ($(HARDWARE_MOTHERBOARD),1148)
-# ADIMLab Gantry v2
-else ifeq ($(HARDWARE_MOTHERBOARD),1149)
-# BIQU Tango V1
-else ifeq ($(HARDWARE_MOTHERBOARD),1150)
-# MKS GEN L V2
-else ifeq ($(HARDWARE_MOTHERBOARD),1151)
-# MKS GEN L V2.1
-else ifeq ($(HARDWARE_MOTHERBOARD),1152)
-# Copymaster 3D
-else ifeq ($(HARDWARE_MOTHERBOARD),1153)
-# Ortur 4
-else ifeq ($(HARDWARE_MOTHERBOARD),1154)
-# Tenlog D3 Hero
-else ifeq ($(HARDWARE_MOTHERBOARD),1155)
+# Longer LKx PRO / Alfawise Uxx Pro (PRO version)
+else ifeq ($(HARDWARE_MOTHERBOARD),1162)
+# Zonestar zrib V5.3 (Chinese RAMPS replica)
+else ifeq ($(HARDWARE_MOTHERBOARD),1163)
+# Pxmalion Core I3
+else ifeq ($(HARDWARE_MOTHERBOARD),1164)
 
 #
 # RAMBo and derivatives
@@ -512,7 +401,7 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1324)
 else ifeq ($(HARDWARE_MOTHERBOARD),1325)
 # Intamsys 4.0 (Funmat HT)
 else ifeq ($(HARDWARE_MOTHERBOARD),1326)
-# Malyan M180 Mainboard Version 2 (no display function, direct gcode only)
+# Malyan M180 Mainboard Version 2 (no display function, direct G-code only)
 else ifeq ($(HARDWARE_MOTHERBOARD),1327)
 # Geeetech GT2560 Rev B for A20(M/T/D)
 else ifeq ($(HARDWARE_MOTHERBOARD),1328)
@@ -767,18 +656,18 @@ ifeq ($(HARDWARE_VARIANT), $(filter $(HARDWARE_VARIANT),arduino Teensy Sanguino)
   # Old libraries (avr-core 1.6.21 < / Arduino < 1.6.8)
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SPI
   # New libraries (avr-core >= 1.6.21 / Arduino >= 1.6.8)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SPI/src
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/arduino/avr/1.8.6/libraries/SPI/src
 endif
 
 ifeq ($(IS_MCU),1)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/cores/arduino
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/arduino/avr/1.8.6/cores/arduino
 
   # Old libraries (avr-core 1.6.21 < / Arduino < 1.6.8)
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SPI
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SoftwareSerial
   # New libraries (avr-core >= 1.6.21 / Arduino >= 1.6.8)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SPI/src
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/SoftwareSerial/src
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/arduino/avr/1.8.6/libraries/SPI/src
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/arduino/avr/1.8.6/libraries/SoftwareSerial/src
 endif
 
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/LiquidCrystal/src
@@ -792,17 +681,17 @@ ifeq ($(WIRE), 1)
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/Wire
   VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/Wire/utility
   # New libraries (avr-core >= 1.6.21 / Arduino >= 1.6.8)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/Wire/src
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/libraries/Wire/src/utility
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/libraries/Wire/src
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/libraries/Wire/src/utility
 endif
 ifeq ($(NEOPIXEL), 1)
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/Adafruit_NeoPixel
 endif
 ifeq ($(U8GLIB), 1)
-VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib
-VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib/csrc
-VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib/cppsrc
-VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib/fntsrc
+VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib-HAL
+VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib-HAL/src
+# VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib
+# VPATH += $(ARDUINO_INSTALL_DIR)/libraries/U8glib/src
 endif
 ifeq ($(TMC), 1)
 VPATH += $(ARDUINO_INSTALL_DIR)/libraries/TMCStepper/src
@@ -811,9 +700,9 @@ endif
 
 ifeq ($(HARDWARE_VARIANT), arduino)
   HARDWARE_SUB_VARIANT ?= mega
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/arduino/avr/variants/$(HARDWARE_SUB_VARIANT)
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/variants/$(HARDWARE_SUB_VARIANT)
 else ifeq ($(HARDWARE_VARIANT), Sanguino)
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/marlin/avr/variants/sanguino
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/variants/sanguino
 else ifeq ($(HARDWARE_VARIANT), archim)
   VPATH   += $(ARDUINO_INSTALL_DIR)/packages/ultimachine/hardware/sam/1.6.9-b/system/libsam
   VPATH   += $(ARDUINO_INSTALL_DIR)/packages/ultimachine/hardware/sam/1.6.9-b/system/CMSIS/CMSIS/Include/
@@ -829,7 +718,7 @@ else ifeq ($(HARDWARE_VARIANT), archim)
   LDLIBS   = $(ARDUINO_INSTALL_DIR)/packages/ultimachine/hardware/sam/1.6.9-b/variants/archim/libsam_sam3x8e_gcc_rel.a
 else
   HARDWARE_SUB_VARIANT ?= standard
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/$(HARDWARE_VARIANT)/variants/$(HARDWARE_SUB_VARIANT)
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/avr/1.8.6/variants/$(HARDWARE_SUB_VARIANT)
 endif
 
 LIB_SRC = wiring.c \
@@ -844,7 +733,7 @@ endif
 
 ifeq ($(HARDWARE_VARIANT), Teensy)
   LIB_SRC = wiring.c
-  VPATH += $(ARDUINO_INSTALL_DIR)/hardware/teensy/cores/teensy
+  VPATH += $(ARDUINO_INSTALL_DIR)/packages/arduino/hardware/teensy/cores/teensy
 endif
 
 LIB_CXXSRC = WMath.cpp WString.cpp Print.cpp SPI.cpp
@@ -991,7 +880,7 @@ AVRDUDE_WRITE_FLASH = -Uflash:w:$(BUILD_DIR)/$(TARGET).hex:i
 ifeq ($(shell uname -s), Linux)
   AVRDUDE_CONF = /etc/avrdude/avrdude.conf
 else
-  AVRDUDE_CONF = $(ARDUINO_INSTALL_DIR)/hardware/tools/avr/etc/avrdude.conf
+  AVRDUDE_CONF = $(ARDUINO_INSTALL_DIR)/packages/arduino/tools/avrdude/6.3.0-arduino17/etc/avrdude.conf
 endif
 AVRDUDE_FLAGS = -D -C$(AVRDUDE_CONF) \
   -p$(PROG_MCU) -P$(AVRDUDE_PORT) -c$(AVRDUDE_PROGRAMMER) \

Marlin/Marlin.ino

@@ -2,7 +2,7 @@
 
   Marlin Firmware
 
-  (c) 2011-2020 MarlinFirmware
+  (c) 2011-2024 MarlinFirmware
   Portions of Marlin are (c) by their respective authors.
   All code complies with GPLv2 and/or GPLv3
 
@@ -27,7 +27,7 @@ Configuration
   - https://github.com/MarlinFirmware/Configurations
     Example configurations for several printer models.
 
-  - https://www.youtube.com/watch?v=3gwWVFtdg-4
+  - https://youtu.be/3gwWVFtdg-4
     A good 20-minute overview of Marlin configuration by Tom Sanladerer.
     (Applies to Marlin 1.0.x, so Jerk and Acceleration should be halved.)
     Also... https://www.google.com/search?tbs=vid%3A1&q=configure+marlin

Marlin/Version.h

@@ -28,7 +28,7 @@
 /**
  * Marlin release version identifier
  */
-//#define SHORT_BUILD_VERSION "bugfix-2.0.x"
+//#define SHORT_BUILD_VERSION "bugfix-2.1.x"
 
 /**
  * Verbose version identifier which should contain a reference to the location
@@ -41,7 +41,7 @@
  * here we define this default string as the date where the latest release
  * version was tagged.
  */
-//#define STRING_DISTRIBUTION_DATE "2022-04-03"
+//#define STRING_DISTRIBUTION_DATE "2024-05-24"
 
 /**
  * Defines a generic printer name to be output to the LCD after booting Marlin.

Marlin/config.ini

@@ -0,0 +1,247 @@
+#
+# Marlin Firmware
+# config.ini - Options to apply before the build
+#
+[config:base]
+#
+# ini_use_config - A comma-separated list of actions to apply to the Configuration files.
+#                  The actions will be applied in the listed order.
+#  - none
+#    Ignore this file and don't apply any configuration options
+#
+#  - base
+#    Just apply the options in config:base to the configuration
+#
+#  - minimal
+#    Just apply the options in config:minimal to the configuration
+#
+#  - all
+#    Apply all 'config:*' sections in this file to the configuration
+#
+#  - another.ini
+#    Load another INI file with a path relative to this config.ini file (i.e., within Marlin/)
+#
+#  - https://me.myserver.com/path/to/configs
+#    Fetch configurations from any URL.
+#
+#  - example/Creality/Ender-5 Plus @ bugfix-2.1.x
+#    Fetch example configuration files from the MarlinFirmware/Configurations repository
+#    https://raw.githubusercontent.com/MarlinFirmware/Configurations/bugfix-2.1.x/config/examples/Creality/Ender-5%20Plus/
+#
+#  - example/default @ release-2.0.9.7
+#    Fetch default configuration files from the MarlinFirmware/Configurations repository
+#    https://raw.githubusercontent.com/MarlinFirmware/Configurations/release-2.0.9.7/config/default/
+#
+#  - [disable]
+#    Comment out all #defines in both Configuration.h and Configuration_adv.h. This is useful
+#    to start with a clean slate before applying any config: options, so only the options explicitly
+#    set in config.ini will be enabled in the configuration.
+#
+#  - [flatten] (Not yet implemented)
+#    Produce a flattened set of Configuration.h and Configuration_adv.h files with only the enabled
+#    #defines and no comments. A clean look, but context-free.
+#
+ini_use_config                           = none
+
+# Load all config: sections in this file
+;ini_use_config                          = all
+# Disable everything and apply subsequent config:base options
+;ini_use_config                          = [disable], base
+# Load config file relative to Marlin/
+;ini_use_config                          = another.ini
+# Download configurations from GitHub
+;ini_use_config                          = example/Creality/Ender-5 Plus @ bugfix-2.1.x
+# Download configurations from your server
+;ini_use_config                          = https://me.myserver.com/path/to/configs
+# Evaluate config:base and do a config dump
+;ini_use_config                          = base
+;config_export                           = 2
+
+[config:minimal]
+motherboard                              = BOARD_RAMPS_14_EFB
+serial_port                              = 0
+baudrate                                 = 250000
+
+use_watchdog                             = on
+thermal_protection_hotends               = on
+thermal_protection_hysteresis            = 4
+thermal_protection_period                = 40
+
+bufsize                                  = 4
+block_buffer_size                        = 16
+max_cmd_size                             = 96
+
+extruders                                = 1
+temp_sensor_0                            = 1
+
+temp_hysteresis                          = 3
+heater_0_mintemp                         = 5
+heater_0_maxtemp                         = 275
+preheat_1_temp_hotend                    = 180
+
+bang_max                                 = 255
+pidtemp                                  = on
+pid_k1                                   = 0.95
+pid_max                                  = 255
+pid_functional_range                     = 10
+
+default_kp                               = 22.20
+default_ki                               = 1.08
+default_kd                               = 114.00
+
+x_driver_type                            = A4988
+y_driver_type                            = A4988
+z_driver_type                            = A4988
+e0_driver_type                           = A4988
+
+x_bed_size                               = 200
+x_min_pos                                = 0
+x_max_pos                                = X_BED_SIZE
+
+y_bed_size                               = 200
+y_min_pos                                = 0
+y_max_pos                                = Y_BED_SIZE
+
+z_min_pos                                = 0
+z_max_pos                                = 200
+
+x_home_dir                               = -1
+y_home_dir                               = -1
+z_home_dir                               = -1
+
+x_min_endstop_hit_state                  = HIGH
+y_min_endstop_hit_state                  = HIGH
+z_min_endstop_hit_state                  = HIGH
+
+default_axis_steps_per_unit              = { 80, 80, 400, 500 }
+axis_relative_modes                      = { false, false, false, false }
+default_max_feedrate                     = { 300, 300, 5, 25 }
+default_max_acceleration                 = { 3000, 3000, 100, 10000 }
+
+homing_feedrate_mm_m                     = { (50*60), (50*60), (4*60) }
+homing_bump_divisor                      = { 2, 2, 4 }
+
+x_enable_on                              = 0
+y_enable_on                              = 0
+z_enable_on                              = 0
+e_enable_on                              = 0
+
+invert_x_dir                             = false
+invert_y_dir                             = true
+invert_z_dir                             = false
+invert_e0_dir                            = false
+
+step_state_e                             = HIGH
+step_state_x                             = HIGH
+step_state_y                             = HIGH
+step_state_z                             = HIGH
+
+disable_x                                = off
+disable_y                                = off
+disable_z                                = off
+disable_e                                = off
+
+proportional_font_ratio                  = 1.0
+default_nominal_filament_dia             = 1.75
+
+junction_deviation_mm                    = 0.013
+
+default_acceleration                     = 3000
+default_travel_acceleration              = 3000
+default_retract_acceleration             = 3000
+
+default_minimumfeedrate                  = 0.0
+default_mintravelfeedrate                = 0.0
+
+minimum_planner_speed                    = 0.05
+min_steps_per_segment                    = 6
+default_minsegmenttime                   = 20000
+
+[config:basic]
+bed_overshoot                            = 10
+busy_while_heating                       = on
+default_ejerk                            = 5.0
+default_keepalive_interval               = 2
+default_leveling_fade_height             = 0.0
+disable_other_extruders                  = on
+display_charset_hd44780                  = JAPANESE
+eeprom_boot_silent                       = on
+eeprom_chitchat                          = on
+endstoppullups                           = on
+extrude_maxlength                        = 200
+extrude_mintemp                          = 170
+host_keepalive_feature                   = on
+hotend_overshoot                         = 15
+jd_handle_small_segments                 = on
+lcd_info_screen_style                    = 0
+lcd_language                             = en
+max_bed_power                            = 255
+mesh_inset                               = 0
+min_software_endstops                    = on
+max_software_endstops                    = on
+min_software_endstop_x                   = on
+min_software_endstop_y                   = on
+min_software_endstop_z                   = on
+max_software_endstop_x                   = on
+max_software_endstop_y                   = on
+max_software_endstop_z                   = on
+preheat_1_fan_speed                      = 0
+preheat_1_label                          = "PLA"
+preheat_1_temp_bed                       = 70
+prevent_cold_extrusion                   = on
+prevent_lengthy_extrude                  = on
+printjob_timer_autostart                 = on
+probing_margin                           = 10
+show_bootscreen                          = on
+soft_pwm_scale                           = 0
+string_config_h_author                   = "(none, default config)"
+temp_bed_hysteresis                      = 3
+temp_bed_residency_time                  = 10
+temp_bed_window                          = 1
+temp_residency_time                      = 10
+temp_window                              = 1
+validate_homing_endstops                 = on
+xy_probe_feedrate                        = (133*60)
+z_clearance_between_probes               = 5
+z_clearance_deploy_probe                 = 10
+z_clearance_multi_probe                  = 5
+
+[config:advanced]
+arc_support                              = on
+auto_report_temperatures                 = on
+autotemp                                 = on
+autotemp_oldweight                       = 0.98
+bed_check_interval                       = 5000
+default_stepper_timeout_sec              = 120
+default_volumetric_extruder_limit        = 0.00
+disable_idle_x                           = on
+disable_idle_y                           = on
+disable_idle_z                           = on
+disable_idle_e                           = on
+e0_auto_fan_pin                          = -1
+encoder_100x_steps_per_sec               = 80
+encoder_10x_steps_per_sec                = 30
+encoder_rate_multiplier                  = on
+extended_capabilities_report             = on
+extruder_auto_fan_speed                  = 255
+extruder_auto_fan_temperature            = 50
+fanmux0_pin                              = -1
+fanmux1_pin                              = -1
+fanmux2_pin                              = -1
+faster_gcode_parser                      = on
+homing_bump_mm                           = { 5, 5, 2 }
+max_arc_segment_mm                       = 1.0
+min_arc_segment_mm                       = 0.1
+min_circle_segments                      = 72
+n_arc_correction                         = 25
+serial_overrun_protection                = on
+slowdown                                 = on
+slowdown_divisor                         = 2
+temp_sensor_bed                          = 0
+thermal_protection_bed_hysteresis        = 2
+thermocouple_max_errors                  = 15
+tx_buffer_size                           = 0
+watch_bed_temp_increase                  = 2
+watch_bed_temp_period                    = 60
+watch_temp_increase                      = 2
+watch_temp_period                        = 20

Marlin/src/HAL/AVR/HAL.cpp

@@ -23,6 +23,7 @@
 
 #include "../../inc/MarlinConfig.h"
 #include "HAL.h"
+#include <avr/wdt.h>
 
 #ifdef USBCON
   DefaultSerial1 MSerial0(false, Serial);
@@ -60,23 +61,46 @@ void save_reset_reason() {
   wdt_disable();
 }
 
+#include "registers.h"
+
+MarlinHAL::MarlinHAL() {
+  TERN_(HAL_AVR_DIRTY_INIT, _ATmega_resetperipherals()); // Clean-wipe the device state.
+}
+
 void MarlinHAL::init() {
   // Init Servo Pins
-  #define INIT_SERVO(N) OUT_WRITE(SERVO##N##_PIN, LOW)
   #if HAS_SERVO_0
-    INIT_SERVO(0);
+    OUT_WRITE(SERVO0_PIN, LOW);
   #endif
   #if HAS_SERVO_1
-    INIT_SERVO(1);
+    OUT_WRITE(SERVO1_PIN, LOW);
   #endif
   #if HAS_SERVO_2
-    INIT_SERVO(2);
+    OUT_WRITE(SERVO2_PIN, LOW);
   #endif
   #if HAS_SERVO_3
-    INIT_SERVO(3);
+    OUT_WRITE(SERVO3_PIN, LOW);
+  #endif
+  #if HAS_SERVO_4
+    OUT_WRITE(SERVO4_PIN, LOW);
+  #endif
+  #if HAS_SERVO_5
+    OUT_WRITE(SERVO5_PIN, LOW);
   #endif
 
   init_pwm_timers();   // Init user timers to default frequency - 1000HZ
+
+  #if PIN_EXISTS(BEEPER) && ENABLED(HAL_AVR_DIRTY_INIT) && DISABLED(ATMEGA_NO_BEEPFIX)
+    // Make sure no alternative is locked onto the BEEPER.
+    // This fixes the issue where the ATmega is constantly beeping.
+    // Might disable other peripherals using the pin; to circumvent that please undefine one of the above things!
+    // The true culprit is the AVR ArduinoCore that enables peripherals redundantly.
+    // (USART1 on the GeeeTech GT2560)
+    // https://www.youtube.com/watch?v=jMgCvRXkexk
+    _ATmega_savePinAlternate(BEEPER_PIN);
+
+    OUT_WRITE(BEEPER_PIN, LOW);
+  #endif
 }
 
 void MarlinHAL::reboot() {
@@ -88,12 +112,68 @@ void MarlinHAL::reboot() {
   #endif
 }
 
-#if ENABLED(SDSUPPORT)
+// ------------------------
+// Watchdog Timer
+// ------------------------
+
+#if ENABLED(USE_WATCHDOG)
+
+  #include <avr/wdt.h>
+  #include "../../MarlinCore.h"
+
+  // Initialize watchdog with 8s timeout, if possible. Otherwise, make it 4s.
+  void MarlinHAL::watchdog_init() {
+    #if ENABLED(WATCHDOG_DURATION_8S) && defined(WDTO_8S)
+      #define WDTO_NS WDTO_8S
+    #else
+      #define WDTO_NS WDTO_4S
+    #endif
+    #if ENABLED(WATCHDOG_RESET_MANUAL)
+      // Enable the watchdog timer, but only for the interrupt.
+      // Take care, as this requires the correct order of operation, with interrupts disabled.
+      // See the datasheet of any AVR chip for details.
+      wdt_reset();
+      cli();
+      _WD_CONTROL_REG = _BV(_WD_CHANGE_BIT) | _BV(WDE);
+      _WD_CONTROL_REG = _BV(WDIE) | (WDTO_NS & 0x07) | ((WDTO_NS & 0x08) << 2); // WDTO_NS directly does not work. bit 0-2 are consecutive in the register but the highest value bit is at bit 5
+                                                                                // So worked for up to WDTO_2S
+      sei();
+      wdt_reset();
+    #else
+      wdt_enable(WDTO_NS); // The function handles the upper bit correct.
+    #endif
+    //delay(10000); // test it!
+  }
+
+  //===========================================================================
+  //=================================== ISR ===================================
+  //===========================================================================
+
+  // Watchdog timer interrupt, called if main program blocks >4sec and manual reset is enabled.
+  #if ENABLED(WATCHDOG_RESET_MANUAL)
+    ISR(WDT_vect) {
+      sei();  // With the interrupt driven serial we need to allow interrupts.
+      SERIAL_ERROR_MSG(STR_WATCHDOG_FIRED);
+      minkill();  // interrupt-safe final kill and infinite loop
+    }
+  #endif
+
+  // Reset watchdog. MUST be called at least every 4 seconds after the
+  // first watchdog_init or AVR will go into emergency procedures.
+  void MarlinHAL::watchdog_refresh() { wdt_reset(); }
+
+#endif // USE_WATCHDOG
+
+// ------------------------
+// Free Memory Accessor
+// ------------------------
+
+#if HAS_MEDIA
 
   #include "../../sd/SdFatUtil.h"
   int freeMemory() { return SdFatUtil::FreeRam(); }
 
-#else // !SDSUPPORT
+#else // !HAS_MEDIA
 
   extern "C" {
     extern char __bss_end;
@@ -110,6 +190,6 @@ void MarlinHAL::reboot() {
     }
   }
 
-#endif // !SDSUPPORT
+#endif // !HAS_MEDIA
 
 #endif // __AVR__

Marlin/src/HAL/AVR/HAL.h

@@ -1,7 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,17 +21,20 @@
  */
 #pragma once
 
+/**
+ * HAL for Arduino AVR
+ */
+
 #include "../shared/Marduino.h"
 #include "../shared/HAL_SPI.h"
 #include "fastio.h"
-#include "watchdog.h"
 #include "math.h"
 
 #ifdef USBCON
   #include <HardwareSerial.h>
 #else
-  #define HardwareSerial_h // Hack to prevent HardwareSerial.h header inclusion
   #include "MarlinSerial.h"
+  #define BOARD_NO_NATIVE_USB
 #endif
 
 #include <stdint.h>
@@ -104,48 +109,48 @@ typedef Servo hal_servo_t;
 
   #define MYSERIAL1 TERN(BLUETOOTH, btSerial, MSerial0)
 #else
-  #if !WITHIN(SERIAL_PORT, -1, 3)
-    #error "SERIAL_PORT must be from 0 to 3, or -1 for USB Serial."
+  #if !WITHIN(SERIAL_PORT, 0, 3)
+    #error "SERIAL_PORT must be from 0 to 3."
   #endif
   #define MYSERIAL1 customizedSerial1
 
   #ifdef SERIAL_PORT_2
-    #if !WITHIN(SERIAL_PORT_2, -1, 3)
-      #error "SERIAL_PORT_2 must be from 0 to 3, or -1 for USB Serial."
+    #if !WITHIN(SERIAL_PORT_2, 0, 3)
+      #error "SERIAL_PORT_2 must be from 0 to 3."
     #endif
     #define MYSERIAL2 customizedSerial2
   #endif
 
   #ifdef SERIAL_PORT_3
-    #if !WITHIN(SERIAL_PORT_3, -1, 3)
-      #error "SERIAL_PORT_3 must be from 0 to 3, or -1 for USB Serial."
+    #if !WITHIN(SERIAL_PORT_3, 0, 3)
+      #error "SERIAL_PORT_3 must be from 0 to 3."
     #endif
     #define MYSERIAL3 customizedSerial3
   #endif
 #endif
 
 #ifdef MMU2_SERIAL_PORT
-  #if !WITHIN(MMU2_SERIAL_PORT, -1, 3)
-    #error "MMU2_SERIAL_PORT must be from 0 to 3, or -1 for USB Serial."
+  #if !WITHIN(MMU2_SERIAL_PORT, 0, 3)
+    #error "MMU2_SERIAL_PORT must be from 0 to 3"
   #endif
   #define MMU2_SERIAL mmuSerial
 #endif
 
 #ifdef LCD_SERIAL_PORT
-  #if !WITHIN(LCD_SERIAL_PORT, -1, 3)
-    #error "LCD_SERIAL_PORT must be from 0 to 3, or -1 for USB Serial."
+  #if !WITHIN(LCD_SERIAL_PORT, 0, 3)
+    #error "LCD_SERIAL_PORT must be from 0 to 3."
   #endif
   #define LCD_SERIAL lcdSerial
   #if HAS_DGUS_LCD
-    #define SERIAL_GET_TX_BUFFER_FREE() LCD_SERIAL.get_tx_buffer_free()
+    #define LCD_SERIAL_TX_BUFFER_FREE() LCD_SERIAL.get_tx_buffer_free()
   #endif
 #endif
 
 //
 // ADC
 //
-#define HAL_ADC_VREF        5.0
-#define HAL_ADC_RESOLUTION 10
+#define HAL_ADC_VREF_MV   5000
+#define HAL_ADC_RESOLUTION  10
 
 //
 // Pin Mapping for M42, M43, M226
@@ -164,7 +169,7 @@ typedef Servo hal_servo_t;
 #define strtof strtod
 
 // ------------------------
-// Class Utilities
+// Free Memory Accessor
 // ------------------------
 
 #pragma GCC diagnostic push
@@ -184,7 +189,11 @@ class MarlinHAL {
 public:
 
   // Earliest possible init, before setup()
-  MarlinHAL() {}
+  MarlinHAL();
+
+  // Watchdog
+  static void watchdog_init()    IF_DISABLED(USE_WATCHDOG, {});
+  static void watchdog_refresh() IF_DISABLED(USE_WATCHDOG, {});
 
   static void init();          // Called early in setup()
   static void init_board() {}  // Called less early in setup()
@@ -229,7 +238,7 @@ public:
     SBI(DIDR0, ch);
   }
 
-  // Begin ADC sampling on the given channel
+  // Begin ADC sampling on the given channel. Called from Temperature::isr!
   static void adc_start(const uint8_t ch) {
     #ifdef MUX5
       ADCSRB = ch > 7 ? _BV(MUX5) : 0;

Marlin/src/HAL/AVR/HAL_SPI.cpp

@@ -119,7 +119,6 @@ void spiBegin() {
     while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
   }
 
-
   /** begin spi transaction */
   void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
     // Based on Arduino SPI library
@@ -175,7 +174,6 @@ void spiBegin() {
     SPSR = clockDiv | 0x01;
   }
 
-
 #else // SOFTWARE_SPI || FORCE_SOFT_SPI
 
   // ------------------------
@@ -198,7 +196,7 @@ void spiBegin() {
     // output pin high - like sending 0xFF
     WRITE(SD_MOSI_PIN, HIGH);
 
-    LOOP_L_N(i, 8) {
+    for (uint8_t i = 0; i < 8; ++i) {
       WRITE(SD_SCK_PIN, HIGH);
 
       nop; // adjust so SCK is nice
@@ -225,7 +223,7 @@ void spiBegin() {
   void spiSend(uint8_t data) {
     // no interrupts during byte send - about 8µs
     cli();
-    LOOP_L_N(i, 8) {
+    for (uint8_t i = 0; i < 8; ++i) {
       WRITE(SD_SCK_PIN, LOW);
       WRITE(SD_MOSI_PIN, data & 0x80);
       data <<= 1;

Marlin/src/HAL/AVR/MarlinSerial.h

@@ -34,12 +34,9 @@
 #include <WString.h>
 
 #include "../../inc/MarlinConfigPre.h"
+#include "../../core/types.h"
 #include "../../core/serial_hook.h"
 
-#ifndef SERIAL_PORT
-  #define SERIAL_PORT 0
-#endif
-
 #ifndef USBCON
 
   // The presence of the UBRRH register is used to detect a UART.
@@ -138,10 +135,6 @@
 
   #define BYTE 0
 
-  // Templated type selector
-  template<bool b, typename T, typename F> struct TypeSelector { typedef T type;} ;
-  template<typename T, typename F> struct TypeSelector<false, T, F> { typedef F type; };
-
   template<typename Cfg>
   class MarlinSerial {
   protected:
@@ -164,7 +157,7 @@
     static constexpr B_U2Xx<Cfg::PORT>   B_U2X   = 0;
 
     // Base size of type on buffer size
-    typedef typename TypeSelector<(Cfg::RX_SIZE>256), uint16_t, uint8_t>::type ring_buffer_pos_t;
+    typedef uvalue_t(Cfg::RX_SIZE - 1) ring_buffer_pos_t;
 
     struct ring_buffer_r {
       volatile ring_buffer_pos_t head, tail;
@@ -283,7 +276,7 @@
     static constexpr bool DROPPED_RX        = false;
     static constexpr bool RX_FRAMING_ERRORS = false;
     static constexpr bool MAX_RX_QUEUED     = false;
-    static constexpr bool RX_OVERRUNS       = BOTH(HAS_DGUS_LCD, SERIAL_STATS_RX_BUFFER_OVERRUNS);
+    static constexpr bool RX_OVERRUNS       = ALL(HAS_DGUS_LCD, SERIAL_STATS_RX_BUFFER_OVERRUNS);
   };
 
   typedef Serial1Class< MarlinSerial< LCDSerialCfg<LCD_SERIAL_PORT> > > MSerialLCD;

Marlin/src/HAL/AVR/Servo.cpp

@@ -63,30 +63,28 @@
 
 static volatile int8_t Channel[_Nbr_16timers];              // counter for the servo being pulsed for each timer (or -1 if refresh interval)
 
-
 /************ static functions common to all instances ***********************/
 
-static inline void handle_interrupts(timer16_Sequence_t timer, volatile uint16_t* TCNTn, volatile uint16_t* OCRnA) {
-  if (Channel[timer] < 0)
-    *TCNTn = 0; // channel set to -1 indicated that refresh interval completed so reset the timer
-  else {
-    if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && SERVO(timer, Channel[timer]).Pin.isActive)
-      extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, LOW); // pulse this channel low if activated
-  }
+static inline void handle_interrupts(const timer16_Sequence_t timer, volatile uint16_t* TCNTn, volatile uint16_t* OCRnA) {
+  int8_t cho = Channel[timer];                                        // Handle the prior Channel[timer] first
+  if (cho < 0)                                                        // Channel -1 indicates the refresh interval completed...
+    *TCNTn = 0;                                                       // ...so reset the timer
+  else if (SERVO_INDEX(timer, cho) < ServoCount)                      // prior channel handled?
+    extDigitalWrite(SERVO(timer, cho).Pin.nbr, LOW);                  // pulse the prior channel LOW
 
-  Channel[timer]++;    // increment to the next channel
-  if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && Channel[timer] < SERVOS_PER_TIMER) {
-    *OCRnA = *TCNTn + SERVO(timer, Channel[timer]).ticks;
-    if (SERVO(timer, Channel[timer]).Pin.isActive)    // check if activated
-      extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, HIGH); // it's an active channel so pulse it high
+  Channel[timer] = ++cho;                                             // Handle the next channel (or 0)
+  if (cho < SERVOS_PER_TIMER && SERVO_INDEX(timer, cho) < ServoCount) {
+    *OCRnA = *TCNTn + SERVO(timer, cho).ticks;                        // set compare to current ticks plus duration
+    if (SERVO(timer, cho).Pin.isActive)                               // activated?
+      extDigitalWrite(SERVO(timer, cho).Pin.nbr, HIGH);               // yes: pulse HIGH
   }
   else {
     // finished all channels so wait for the refresh period to expire before starting over
-    if (((unsigned)*TCNTn) + 4 < usToTicks(REFRESH_INTERVAL))    // allow a few ticks to ensure the next OCR1A not missed
-      *OCRnA = (unsigned int)usToTicks(REFRESH_INTERVAL);
-    else
-      *OCRnA = *TCNTn + 4;  // at least REFRESH_INTERVAL has elapsed
-    Channel[timer] = -1; // this will get incremented at the end of the refresh period to start again at the first channel
+    const unsigned int cval = ((unsigned)*TCNTn) + 32 / (SERVO_TIMER_PRESCALER), // allow 32 cycles to ensure the next OCR1A not missed
+                       ival = (unsigned int)usToTicks(REFRESH_INTERVAL); // at least REFRESH_INTERVAL has elapsed
+    *OCRnA = max(cval, ival);
+
+    Channel[timer] = -1;                                              // reset the timer counter to 0 on the next call
   }
 }
 
@@ -123,91 +121,102 @@ static inline void handle_interrupts(timer16_Sequence_t timer, volatile uint16_t
 
 /****************** end of static functions ******************************/
 
-void initISR(timer16_Sequence_t timer) {
-  #ifdef _useTimer1
-    if (timer == _timer1) {
-      TCCR1A = 0;             // normal counting mode
-      TCCR1B = _BV(CS11);     // set prescaler of 8
-      TCNT1 = 0;              // clear the timer count
-      #if defined(__AVR_ATmega8__) || defined(__AVR_ATmega128__)
-        SBI(TIFR, OCF1A);      // clear any pending interrupts;
-        SBI(TIMSK, OCIE1A);    // enable the output compare interrupt
-      #else
-        // here if not ATmega8 or ATmega128
-        SBI(TIFR1, OCF1A);     // clear any pending interrupts;
-        SBI(TIMSK1, OCIE1A);   // enable the output compare interrupt
-      #endif
-      #ifdef WIRING
-        timerAttach(TIMER1OUTCOMPAREA_INT, Timer1Service);
-      #endif
-    }
-  #endif
+void initISR(const timer16_Sequence_t timer_index) {
+  switch (timer_index) {
+    default: break;
 
-  #ifdef _useTimer3
-    if (timer == _timer3) {
-      TCCR3A = 0;             // normal counting mode
-      TCCR3B = _BV(CS31);     // set prescaler of 8
-      TCNT3 = 0;              // clear the timer count
-      #ifdef __AVR_ATmega128__
-        SBI(TIFR, OCF3A);     // clear any pending interrupts;
-        SBI(ETIMSK, OCIE3A);  // enable the output compare interrupt
-      #else
-        SBI(TIFR3, OCF3A);   // clear any pending interrupts;
-        SBI(TIMSK3, OCIE3A); // enable the output compare interrupt
-      #endif
-      #ifdef WIRING
-        timerAttach(TIMER3OUTCOMPAREA_INT, Timer3Service);  // for Wiring platform only
-      #endif
-    }
-  #endif
+    #ifdef _useTimer1
+      case _timer1:
+        TCCR1A = 0;             // normal counting mode
+        TCCR1B = _BV(CS11);     // set prescaler of 8
+        TCNT1 = 0;              // clear the timer count
+        #if defined(__AVR_ATmega8__) || defined(__AVR_ATmega128__)
+          SBI(TIFR, OCF1A);      // clear any pending interrupts;
+          SBI(TIMSK, OCIE1A);    // enable the output compare interrupt
+        #else
+          // here if not ATmega8 or ATmega128
+          SBI(TIFR1, OCF1A);     // clear any pending interrupts;
+          SBI(TIMSK1, OCIE1A);   // enable the output compare interrupt
+        #endif
+        #ifdef WIRING
+          timerAttach(TIMER1OUTCOMPAREA_INT, Timer1Service);
+        #endif
+        break;
+    #endif
 
-  #ifdef _useTimer4
-    if (timer == _timer4) {
-      TCCR4A = 0;             // normal counting mode
-      TCCR4B = _BV(CS41);     // set prescaler of 8
-      TCNT4 = 0;              // clear the timer count
-      TIFR4 = _BV(OCF4A);     // clear any pending interrupts;
-      TIMSK4 = _BV(OCIE4A);   // enable the output compare interrupt
-    }
-  #endif
+    #ifdef _useTimer3
+      case _timer3:
+        TCCR3A = 0;             // normal counting mode
+        TCCR3B = _BV(CS31);     // set prescaler of 8
+        TCNT3 = 0;              // clear the timer count
+        #ifdef __AVR_ATmega128__
+          SBI(TIFR, OCF3A);     // clear any pending interrupts;
+          SBI(ETIMSK, OCIE3A);  // enable the output compare interrupt
+        #else
+          SBI(TIFR3, OCF3A);   // clear any pending interrupts;
+          SBI(TIMSK3, OCIE3A); // enable the output compare interrupt
+        #endif
+        #ifdef WIRING
+          timerAttach(TIMER3OUTCOMPAREA_INT, Timer3Service);  // for Wiring platform only
+        #endif
+        break;
+    #endif
 
-  #ifdef _useTimer5
-    if (timer == _timer5) {
-      TCCR5A = 0;             // normal counting mode
-      TCCR5B = _BV(CS51);     // set prescaler of 8
-      TCNT5 = 0;              // clear the timer count
-      TIFR5 = _BV(OCF5A);     // clear any pending interrupts;
-      TIMSK5 = _BV(OCIE5A);   // enable the output compare interrupt
-    }
-  #endif
+    #ifdef _useTimer4
+      case _timer4:
+        TCCR4A = 0;             // normal counting mode
+        TCCR4B = _BV(CS41);     // set prescaler of 8
+        TCNT4 = 0;              // clear the timer count
+        TIFR4 = _BV(OCF4A);     // clear any pending interrupts;
+        TIMSK4 = _BV(OCIE4A);   // enable the output compare interrupt
+        break;
+    #endif
+
+    #ifdef _useTimer5
+      case _timer5:
+        TCCR5A = 0;             // normal counting mode
+        TCCR5B = _BV(CS51);     // set prescaler of 8
+        TCNT5 = 0;              // clear the timer count
+        TIFR5 = _BV(OCF5A);     // clear any pending interrupts;
+        TIMSK5 = _BV(OCIE5A);   // enable the output compare interrupt
+        break;
+    #endif
+  }
 }
 
-void finISR(timer16_Sequence_t timer) {
+void finISR(const timer16_Sequence_t timer_index) {
   // Disable use of the given timer
   #ifdef WIRING
-    if (timer == _timer1) {
-      CBI(
-        #if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
-          TIMSK1
-        #else
-          TIMSK
-        #endif
-          , OCIE1A);    // disable timer 1 output compare interrupt
-      timerDetach(TIMER1OUTCOMPAREA_INT);
-    }
-    else if (timer == _timer3) {
-      CBI(
-        #if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
-          TIMSK3
-        #else
-          ETIMSK
-        #endif
-          , OCIE3A);    // disable the timer3 output compare A interrupt
-      timerDetach(TIMER3OUTCOMPAREA_INT);
+    switch (timer_index) {
+      default: break;
+
+      case _timer1:
+        CBI(
+          #if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
+            TIMSK1
+          #else
+            TIMSK
+          #endif
+          , OCIE1A    // disable timer 1 output compare interrupt
+        );
+        timerDetach(TIMER1OUTCOMPAREA_INT);
+        break;
+
+      case _timer3:
+        CBI(
+          #if defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__)
+            TIMSK3
+          #else
+            ETIMSK
+          #endif
+          , OCIE3A    // disable the timer3 output compare A interrupt
+        );
+        timerDetach(TIMER3OUTCOMPAREA_INT);
+        break;
     }
   #else // !WIRING
     // For arduino - in future: call here to a currently undefined function to reset the timer
-    UNUSED(timer);
+    UNUSED(timer_index);
   #endif
 }
 

Marlin/src/HAL/AVR/eeprom.cpp

@@ -23,7 +23,7 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if EITHER(EEPROM_SETTINGS, SD_FIRMWARE_UPDATE)
+#if ANY(EEPROM_SETTINGS, SD_FIRMWARE_UPDATE)
 
 /**
  * PersistentStore for Arduino-style EEPROM interface
@@ -35,14 +35,14 @@
 #ifndef MARLIN_EEPROM_SIZE
   #define MARLIN_EEPROM_SIZE size_t(E2END + 1)
 #endif
-size_t PersistentStore::capacity()    { return MARLIN_EEPROM_SIZE; }
+size_t PersistentStore::capacity()    { return MARLIN_EEPROM_SIZE - eeprom_exclude_size; }
 bool PersistentStore::access_start()  { return true; }
 bool PersistentStore::access_finish() { return true; }
 
 bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
   uint16_t written = 0;
   while (size--) {
-    uint8_t * const p = (uint8_t * const)pos;
+    uint8_t * const p = (uint8_t * const)REAL_EEPROM_ADDR(pos);
     uint8_t v = *value;
     if (v != eeprom_read_byte(p)) { // EEPROM has only ~100,000 write cycles, so only write bytes that have changed!
       eeprom_write_byte(p, v);
@@ -61,7 +61,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
 
 bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
   do {
-    uint8_t c = eeprom_read_byte((uint8_t*)pos);
+    const uint8_t c = eeprom_read_byte((uint8_t*)REAL_EEPROM_ADDR(pos));
     if (writing) *value = c;
     crc16(crc, &c, 1);
     pos++;

Marlin/src/HAL/AVR/endstop_interrupts.h

@@ -91,7 +91,6 @@ void endstop_ISR() { endstops.update(); }
 
 #endif
 
-
 // Install Pin change interrupt for a pin. Can be called multiple times.
 void pciSetup(const int8_t pin) {
   if (digitalPinHasPCICR(pin)) {
@@ -120,7 +119,7 @@ void pciSetup(const int8_t pin) {
 
 void setup_endstop_interrupts() {
   #define _ATTACH(P) attachInterrupt(digitalPinToInterrupt(P), endstop_ISR, CHANGE)
-  #if HAS_X_MAX
+  #if USE_X_MAX
     #if (digitalPinToInterrupt(X_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(X_MAX_PIN);
     #else
@@ -128,7 +127,7 @@ void setup_endstop_interrupts() {
       pciSetup(X_MAX_PIN);
     #endif
   #endif
-  #if HAS_X_MIN
+  #if USE_X_MIN
     #if (digitalPinToInterrupt(X_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(X_MIN_PIN);
     #else
@@ -136,7 +135,7 @@ void setup_endstop_interrupts() {
       pciSetup(X_MIN_PIN);
     #endif
   #endif
-  #if HAS_Y_MAX
+  #if USE_Y_MAX
     #if (digitalPinToInterrupt(Y_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Y_MAX_PIN);
     #else
@@ -144,7 +143,7 @@ void setup_endstop_interrupts() {
       pciSetup(Y_MAX_PIN);
     #endif
   #endif
-  #if HAS_Y_MIN
+  #if USE_Y_MIN
     #if (digitalPinToInterrupt(Y_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Y_MIN_PIN);
     #else
@@ -152,7 +151,7 @@ void setup_endstop_interrupts() {
       pciSetup(Y_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z_MAX
+  #if USE_Z_MAX
     #if (digitalPinToInterrupt(Z_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z_MAX_PIN);
     #else
@@ -160,7 +159,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z_MAX_PIN);
     #endif
   #endif
-  #if HAS_Z_MIN
+  #if USE_Z_MIN
     #if (digitalPinToInterrupt(Z_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z_MIN_PIN);
     #else
@@ -168,97 +167,97 @@ void setup_endstop_interrupts() {
       pciSetup(Z_MIN_PIN);
     #endif
   #endif
-  #if HAS_I_MAX
+  #if USE_I_MAX
     #if (digitalPinToInterrupt(I_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(I_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(I_MAX_PIN), "I_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(I_MAX_PIN), "I_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(I_MAX_PIN);
     #endif
-  #elif HAS_I_MIN
+  #elif USE_I_MIN
     #if (digitalPinToInterrupt(I_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(I_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(I_MIN_PIN), "I_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(I_MIN_PIN), "I_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(I_MIN_PIN);
     #endif
   #endif
-  #if HAS_J_MAX
+  #if USE_J_MAX
     #if (digitalPinToInterrupt(J_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(J_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(J_MAX_PIN), "J_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(J_MAX_PIN), "J_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(J_MAX_PIN);
     #endif
-  #elif HAS_J_MIN
+  #elif USE_J_MIN
     #if (digitalPinToInterrupt(J_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(J_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(J_MIN_PIN), "J_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(J_MIN_PIN), "J_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(J_MIN_PIN);
     #endif
   #endif
-  #if HAS_K_MAX
+  #if USE_K_MAX
     #if (digitalPinToInterrupt(K_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(K_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(K_MAX_PIN), "K_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(K_MAX_PIN), "K_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(K_MAX_PIN);
     #endif
-  #elif HAS_K_MIN
+  #elif USE_K_MIN
     #if (digitalPinToInterrupt(K_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(K_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(K_MIN_PIN), "K_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(K_MIN_PIN), "K_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(K_MIN_PIN);
     #endif
   #endif
-  #if HAS_U_MAX
+  #if USE_U_MAX
     #if (digitalPinToInterrupt(U_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(U_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(U_MAX_PIN), "U_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(U_MAX_PIN), "U_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(U_MAX_PIN);
     #endif
-  #elif HAS_U_MIN
+  #elif USE_U_MIN
     #if (digitalPinToInterrupt(U_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(U_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(U_MIN_PIN), "U_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(U_MIN_PIN), "U_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(U_MIN_PIN);
     #endif
   #endif
-  #if HAS_V_MAX
+  #if USE_V_MAX
     #if (digitalPinToInterrupt(V_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(V_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(V_MAX_PIN), "V_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(V_MAX_PIN), "V_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(V_MAX_PIN);
     #endif
-  #elif HAS_V_MIN
+  #elif USE_V_MIN
     #if (digitalPinToInterrupt(V_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(V_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(V_MIN_PIN), "V_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(V_MIN_PIN), "V_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(V_MIN_PIN);
     #endif
   #endif
-  #if HAS_W_MAX
+  #if USE_W_MAX
     #if (digitalPinToInterrupt(W_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(W_MAX_PIN);
     #else
-      static_assert(digitalPinHasPCICR(W_MAX_PIN), "W_MAX_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(W_MAX_PIN), "W_MAX_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(W_MAX_PIN);
     #endif
-  #elif HAS_W_MIN
+  #elif USE_W_MIN
     #if (digitalPinToInterrupt(W_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(W_MIN_PIN);
     #else
-      static_assert(digitalPinHasPCICR(W_MIN_PIN), "W_MIN_PIN is not interrupt-capable");
+      static_assert(digitalPinHasPCICR(W_MIN_PIN), "W_MIN_PIN is not interrupt-capable. Disable ENDSTOP_INTERRUPTS_FEATURE to continue.");
       pciSetup(W_MIN_PIN);
     #endif
   #endif
-  #if HAS_X2_MAX
+  #if USE_X2_MAX
     #if (digitalPinToInterrupt(X2_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(X2_MAX_PIN);
     #else
@@ -266,7 +265,7 @@ void setup_endstop_interrupts() {
       pciSetup(X2_MAX_PIN);
     #endif
   #endif
-  #if HAS_X2_MIN
+  #if USE_X2_MIN
     #if (digitalPinToInterrupt(X2_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(X2_MIN_PIN);
     #else
@@ -274,7 +273,7 @@ void setup_endstop_interrupts() {
       pciSetup(X2_MIN_PIN);
     #endif
   #endif
-  #if HAS_Y2_MAX
+  #if USE_Y2_MAX
     #if (digitalPinToInterrupt(Y2_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Y2_MAX_PIN);
     #else
@@ -282,7 +281,7 @@ void setup_endstop_interrupts() {
       pciSetup(Y2_MAX_PIN);
     #endif
   #endif
-  #if HAS_Y2_MIN
+  #if USE_Y2_MIN
     #if (digitalPinToInterrupt(Y2_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Y2_MIN_PIN);
     #else
@@ -290,7 +289,7 @@ void setup_endstop_interrupts() {
       pciSetup(Y2_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z2_MAX
+  #if USE_Z2_MAX
     #if (digitalPinToInterrupt(Z2_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z2_MAX_PIN);
     #else
@@ -298,7 +297,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z2_MAX_PIN);
     #endif
   #endif
-  #if HAS_Z2_MIN
+  #if USE_Z2_MIN
     #if (digitalPinToInterrupt(Z2_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z2_MIN_PIN);
     #else
@@ -306,7 +305,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z2_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z3_MAX
+  #if USE_Z3_MAX
     #if (digitalPinToInterrupt(Z3_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z3_MAX_PIN);
     #else
@@ -314,7 +313,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z3_MAX_PIN);
     #endif
   #endif
-  #if HAS_Z3_MIN
+  #if USE_Z3_MIN
     #if (digitalPinToInterrupt(Z3_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z3_MIN_PIN);
     #else
@@ -322,7 +321,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z3_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z4_MAX
+  #if USE_Z4_MAX
     #if (digitalPinToInterrupt(Z4_MAX_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z4_MAX_PIN);
     #else
@@ -330,7 +329,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z4_MAX_PIN);
     #endif
   #endif
-  #if HAS_Z4_MIN
+  #if USE_Z4_MIN
     #if (digitalPinToInterrupt(Z4_MIN_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z4_MIN_PIN);
     #else
@@ -338,7 +337,7 @@ void setup_endstop_interrupts() {
       pciSetup(Z4_MIN_PIN);
     #endif
   #endif
-  #if HAS_Z_MIN_PROBE_PIN
+  #if USE_Z_MIN_PROBE
     #if (digitalPinToInterrupt(Z_MIN_PROBE_PIN) != NOT_AN_INTERRUPT)
       _ATTACH(Z_MIN_PROBE_PIN);
     #else

Marlin/src/HAL/AVR/fast_pwm.cpp

@@ -23,6 +23,10 @@
 
 #include "../../inc/MarlinConfig.h"
 
+//#define DEBUG_AVR_FAST_PWM
+#define DEBUG_OUT ENABLED(DEBUG_AVR_FAST_PWM)
+#include "../../core/debug_out.h"
+
 struct Timer {
   volatile uint8_t* TCCRnQ[3];  // max 3 TCCR registers per timer
   volatile uint16_t* OCRnQ[3];  // max 3 OCR registers per timer
@@ -108,12 +112,15 @@ const Timer get_pwm_timer(const pin_t pin) {
 }
 
 void MarlinHAL::set_pwm_frequency(const pin_t pin, const uint16_t f_desired) {
+  DEBUG_ECHOLNPGM("set_pwm_frequency(pin=", pin, ", freq=", f_desired, ")");
   const Timer timer = get_pwm_timer(pin);
   if (timer.isProtected || !timer.isPWM) return; // Don't proceed if protected timer or not recognized
 
   const bool is_timer2 = timer.n == 2;
   const uint16_t maxtop = is_timer2 ? 0xFF : 0xFFFF;
 
+  DEBUG_ECHOLNPGM("maxtop=", maxtop);
+
   uint16_t res = 0xFF;        // resolution (TOP value)
   uint8_t j = CS_NONE;        // prescaler index
   uint8_t wgm = WGM_PWM_PC_8; // waveform generation mode
@@ -121,23 +128,29 @@ void MarlinHAL::set_pwm_frequency(const pin_t pin, const uint16_t f_desired) {
   // Calculating the prescaler and resolution to use to achieve closest frequency
   if (f_desired != 0) {
     constexpr uint16_t prescaler[] = { 1, 8, (32), 64, (128), 256, 1024 };  // (*) are Timer 2 only
-    uint16_t f = (F_CPU) / (2 * 1024 * maxtop) + 1;           // Start with the lowest non-zero frequency achievable (1 or 31)
+    uint16_t f = (F_CPU) / (uint32_t(maxtop) << 11) + 1;      // Start with the lowest non-zero frequency achievable (for 16MHz, 1 or 31)
 
-    LOOP_L_N(i, COUNT(prescaler)) {                           // Loop through all prescaler values
-      const uint16_t p = prescaler[i];
+    DEBUG_ECHOLNPGM("f=", f);
+    DEBUG_ECHOLNPGM("(prescaler loop)");
+    for (uint8_t i = 0; i < COUNT(prescaler); ++i) {          // Loop through all prescaler values
+      const uint32_t p = prescaler[i];                        // Extend to 32 bits for calculations
+      DEBUG_ECHOLNPGM("prescaler[", i, "]=", p);
       uint16_t res_fast_temp, res_pc_temp;
       if (is_timer2) {
         #if ENABLED(USE_OCR2A_AS_TOP)                         // No resolution calculation for TIMER2 unless enabled USE_OCR2A_AS_TOP
           const uint16_t rft = (F_CPU) / (p * f_desired);
           res_fast_temp = rft - 1;
           res_pc_temp = rft / 2;
+          DEBUG_ECHOLNPGM("(Timer2) res_fast_temp=", res_fast_temp, " res_pc_temp=", res_pc_temp);
         #else
           res_fast_temp = res_pc_temp = maxtop;
+          DEBUG_ECHOLNPGM("(Timer2) res_fast_temp=", maxtop, " res_pc_temp=", maxtop);
         #endif
       }
       else {
         if (p == 32 || p == 128) continue;                    // Skip TIMER2 specific prescalers when not TIMER2
         const uint16_t rft = (F_CPU) / (p * f_desired);
+        DEBUG_ECHOLNPGM("(Not Timer 2) F_CPU=" STRINGIFY(F_CPU), " prescaler=", p, " f_desired=", f_desired);
         res_fast_temp = rft - 1;
         res_pc_temp = rft / 2;
       }
@@ -146,24 +159,28 @@ void MarlinHAL::set_pwm_frequency(const pin_t pin, const uint16_t f_desired) {
       LIMIT(res_pc_temp, 1U, maxtop);
 
       // Calculate frequencies of test prescaler and resolution values
-      const uint32_t f_diff      = _MAX(f, f_desired) - _MIN(f, f_desired),
-                     f_fast_temp = (F_CPU) / (p * (1 + res_fast_temp)),
+      const uint16_t f_fast_temp = (F_CPU) / (p * (1 + res_fast_temp)),
+                     f_pc_temp   = (F_CPU) / ((p * res_pc_temp) << 1),
+                     f_diff      = _MAX(f, f_desired) - _MIN(f, f_desired),
                      f_fast_diff = _MAX(f_fast_temp, f_desired) - _MIN(f_fast_temp, f_desired),
-                     f_pc_temp   = (F_CPU) / (2 * p * res_pc_temp),
                      f_pc_diff   = _MAX(f_pc_temp, f_desired) - _MIN(f_pc_temp, f_desired);
 
+      DEBUG_ECHOLNPGM("f_fast_temp=", f_fast_temp, " f_pc_temp=", f_pc_temp, " f_diff=", f_diff, " f_fast_diff=", f_fast_diff, " f_pc_diff=", f_pc_diff);
+
       if (f_fast_diff < f_diff && f_fast_diff <= f_pc_diff) { // FAST values are closest to desired f
         // Set the Wave Generation Mode to FAST PWM
         wgm = is_timer2 ? uint8_t(TERN(USE_OCR2A_AS_TOP, WGM2_FAST_PWM_OCR2A, WGM2_FAST_PWM)) : uint8_t(WGM_FAST_PWM_ICRn);
         // Remember this combination
         f = f_fast_temp; res = res_fast_temp; j = i + 1;
+        DEBUG_ECHOLNPGM("(FAST) updated f=", f);
       }
       else if (f_pc_diff < f_diff) {                          // PHASE CORRECT values are closes to desired f
         // Set the Wave Generation Mode to PWM PHASE CORRECT
         wgm = is_timer2 ? uint8_t(TERN(USE_OCR2A_AS_TOP, WGM2_PWM_PC_OCR2A, WGM2_PWM_PC)) : uint8_t(WGM_PWM_PC_ICRn);
         f = f_pc_temp; res = res_pc_temp; j = i + 1;
+        DEBUG_ECHOLNPGM("(PHASE) updated f=", f);
       }
-    }
+    } // prescaler loop
   }
 
   _SET_WGMnQ(timer, wgm);
@@ -215,7 +232,7 @@ void MarlinHAL::init_pwm_timers() {
     #endif
   };
 
-  LOOP_L_N(i, COUNT(pwm_pin))
+  for (uint8_t i = 0; i < COUNT(pwm_pin); ++i)
     set_pwm_frequency(pwm_pin[i], 1000);
 }
 

Marlin/src/HAL/AVR/fastio.h

@@ -255,84 +255,6 @@ enum ClockSource2 : uint8_t {
 #define SET_FOCB(T,V) SET_FOC(T,B,V)
 #define SET_FOCC(T,V) SET_FOC(T,C,V)
 
-#if 0
-
-/**
- * PWM availability macros
- */
-
-// Determine which hardware PWMs are already in use
-#define _PWM_CHK_FAN_B(P) (P == E0_AUTO_FAN_PIN || P == E1_AUTO_FAN_PIN || P == E2_AUTO_FAN_PIN || P == E3_AUTO_FAN_PIN || P == E4_AUTO_FAN_PIN || P == E5_AUTO_FAN_PIN || P == E6_AUTO_FAN_PIN || P == E7_AUTO_FAN_PIN || P == CHAMBER_AUTO_FAN_PIN || P == COOLER_AUTO_FAN_PIN)
-#if PIN_EXISTS(CONTROLLER_FAN)
-  #define PWM_CHK_FAN_B(P) (_PWM_CHK_FAN_B(P) || P == CONTROLLER_FAN_PIN)
-#else
-  #define PWM_CHK_FAN_B(P) _PWM_CHK_FAN_B(P)
-#endif
-
-#if ANY_PIN(FAN, FAN1, FAN2, FAN3, FAN4, FAN5, FAN6, FAN7)
-  #if PIN_EXISTS(FAN7)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN || P == FAN4_PIN || P == FAN5_PIN || P == FAN6_PIN || P == FAN7_PIN)
-  #elif PIN_EXISTS(FAN6)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN || P == FAN4_PIN || P == FAN5_PIN || P == FAN6_PIN)
-  #elif PIN_EXISTS(FAN5)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN || P == FAN4_PIN || P == FAN5_PIN)
-  #elif PIN_EXISTS(FAN4)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN || P == FAN4_PIN)
-  #elif PIN_EXISTS(FAN3)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN || P == FAN3_PIN)
-  #elif PIN_EXISTS(FAN2)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN || P == FAN2_PIN)
-  #elif PIN_EXISTS(FAN1)
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN || P == FAN1_PIN)
-  #else
-    #define PWM_CHK_FAN_A(P) (P == FAN0_PIN)
-  #endif
-#else
-  #define PWM_CHK_FAN_A(P) false
-#endif
-
-#if HAS_MOTOR_CURRENT_PWM
-  #if PIN_EXISTS(MOTOR_CURRENT_PWM_XY)
-    #define PWM_CHK_MOTOR_CURRENT(P) (P == MOTOR_CURRENT_PWM_E || P == MOTOR_CURRENT_PWM_Z || P == MOTOR_CURRENT_PWM_XY)
-  #elif PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
-    #define PWM_CHK_MOTOR_CURRENT(P) (P == MOTOR_CURRENT_PWM_E || P == MOTOR_CURRENT_PWM_Z)
-  #else
-    #define PWM_CHK_MOTOR_CURRENT(P) (P == MOTOR_CURRENT_PWM_E)
-  #endif
-#else
-  #define PWM_CHK_MOTOR_CURRENT(P) false
-#endif
-
-#ifdef NUM_SERVOS
-  #if AVR_ATmega2560_FAMILY
-    #define PWM_CHK_SERVO(P) (P == 5 || (NUM_SERVOS > 12 && P == 6) || (NUM_SERVOS > 24 && P == 46))  // PWMS 3A, 4A & 5A
-  #elif AVR_ATmega2561_FAMILY
-    #define PWM_CHK_SERVO(P)   (P == 5)  // PWM3A
-  #elif AVR_ATmega1284_FAMILY
-    #define PWM_CHK_SERVO(P)   false
-  #elif AVR_AT90USB1286_FAMILY
-    #define PWM_CHK_SERVO(P)   (P == 16) // PWM3A
-  #elif AVR_ATmega328_FAMILY
-    #define PWM_CHK_SERVO(P)   false
-  #endif
-#else
-  #define PWM_CHK_SERVO(P) false
-#endif
-
-#if ENABLED(BARICUDA)
-  #if HAS_HEATER_1 && HAS_HEATER_2
-    #define PWM_CHK_HEATER(P) (P == HEATER_1_PIN || P == HEATER_2_PIN)
-  #elif HAS_HEATER_1
-    #define PWM_CHK_HEATER(P) (P == HEATER_1_PIN)
-  #endif
-#else
-    #define PWM_CHK_HEATER(P) false
-#endif
-
-#define PWM_CHK(P) (PWM_CHK_HEATER(P) || PWM_CHK_SERVO(P) || PWM_CHK_MOTOR_CURRENT(P) || PWM_CHK_FAN_A(P) || PWM_CHK_FAN_B(P))
-
-#endif // PWM_CHK is not used in Marlin
-
 // define which hardware PWMs are available for the current CPU
 // all timer 1 PWMS deleted from this list because they are never available
 #if AVR_ATmega2560_FAMILY

Marlin/src/HAL/AVR/fastio/fastio_1280.h

@@ -27,43 +27,44 @@
  *   Hardware Pin  : 02 03 06 07 01 05 15 16 17 18 23 24 25 26 64 63 13 12 46 45 44 43 78 77 76 75 74 73 72 71 60 59 58 57 56 55 54 53 50 70 52 51 42 41 40 39 38 37 36 35 22 21 20 19 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 | 04 08 09 10 11 14 27 28 29 30 31 32 33 34 47 48 49 61 62 65 66 67 68 69 79 80 81 98 99 100
  *   Port          : E0 E1 E4 E5 G5 E3 H3 H4 H5 H6 B4 B5 B6 B7 J1 J0 H1 H0 D3 D2 D1 D0 A0 A1 A2 A3 A4 A5 A6 A7 C7 C6 C5 C4 C3 C2 C1 C0 D7 G2 G1 G0 L7 L6 L5 L4 L3 L2 L1 L0 B3 B2 B1 B0 F0 F1 F2 F3 F4 F5 F6 F7 K0 K1 K2 K3 K4 K5 K6 K7 | E2 E6 E7 xx xx H2 H7 G3 G4 xx xx xx xx xx D4 D5 D6 xx xx J2 J3 J4 J5 J6 J7 xx xx xx xx xx
  *   Logical Pin   : 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | 78 79 80 xx xx 84 85 71 70 xx xx xx xx xx 81 82 83 xx xx 72 73 75 76 77 74 xx xx xx xx xx
+ *   Analog Input  :                                                                                                                                                                    0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
+ *
+ * Arduino Pin Layout video: https://youtu.be/rIqeVCX09FA
+ * AVR alternate pin function overview video: https://youtu.be/1yd8wuI5Plg
  */
 
 #include "../fastio.h"
 
-// change for your board
-#define DEBUG_LED   DIO21
-
 // UART
-#define RXD         DIO0
-#define TXD         DIO1
+#define RXD         0
+#define TXD         1
 
 // SPI
-#define SCK         DIO52
-#define MISO        DIO50
-#define MOSI        DIO51
-#define SS          DIO53
+#define MISO        50
+#define MOSI        51
+#define SCK         52
+#define SS          53
 
 // TWI (I2C)
-#define SCL         DIO21
-#define SDA         DIO20
+#define SCL         21
+#define SDA         20
 
 // Timers and PWM
-#define OC0A        DIO13
-#define OC0B        DIO4
-#define OC1A        DIO11
-#define OC1B        DIO12
-#define OC2A        DIO10
-#define OC2B        DIO9
-#define OC3A        DIO5
-#define OC3B        DIO2
-#define OC3C        DIO3
-#define OC4A        DIO6
-#define OC4B        DIO7
-#define OC4C        DIO8
-#define OC5A        DIO46
-#define OC5B        DIO45
-#define OC5C        DIO44
+#define OC0A        13
+#define OC0B        4
+#define OC1A        11
+#define OC1B        12
+#define OC2A        10
+#define OC2B        9
+#define OC3A        5
+#define OC3B        2
+#define OC3C        3
+#define OC4A        6
+#define OC4B        7
+#define OC4C        8
+#define OC5A        46
+#define OC5B        45
+#define OC5C        44
 
 // Digital I/O
 

Marlin/src/HAL/AVR/fastio/fastio_1281.h

@@ -26,36 +26,36 @@
  *
  *   Logical Pin: 38 39 40 41 42 43 44 45 16 10 11 12 06 07 08 09 30 31 32 33 34 35 36 37 17 18 19 20 21 22 23 24 00 01 13 05 02 03 14 15 46 47 48 49 50 51 52 53 25 26 27 28 29 04
  *   Port:        A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 E0 E1 E2 E3 E4 E5 E6 E7 F0 F1 F2 F3 F4 F5 F6 F7 G0 G1 G2 G3 G4 G5
+ *
+ * Arduino Pin Layout video: https://youtu.be/rIqeVCX09FA
+ * AVR alternate pin function overview video: https://youtu.be/1yd8wuI5Plg
  */
 
 #include "../fastio.h"
 
-// change for your board
-#define DEBUG_LED   DIO46
-
 // UART
-#define RXD         DIO0
-#define TXD         DIO1
+#define RXD         0
+#define TXD         1
 
 // SPI
-#define SCK         DIO10
-#define MISO        DIO12
-#define MOSI        DIO11
-#define SS          DIO16
+#define SCK         10
+#define MISO        12
+#define MOSI        11
+#define SS          16
 
 // TWI (I2C)
-#define SCL         DIO17
-#define SDA         DIO18
+#define SCL         17
+#define SDA         18
 
 // Timers and PWM
-#define OC0A        DIO9
-#define OC0B        DIO4
-#define OC1A        DIO7
-#define OC1B        DIO8
-#define OC2A        DIO6
-#define OC3A        DIO5
-#define OC3B        DIO2
-#define OC3C        DIO3
+#define OC0A        9
+#define OC0B        4
+#define OC1A        7
+#define OC1B        8
+#define OC2A        6
+#define OC3A        5
+#define OC3B        2
+#define OC3C        3
 
 // Digital I/O
 

Marlin/src/HAL/AVR/fastio/fastio_168.h

@@ -26,33 +26,34 @@
  *
  *   Logical Pin: 08 09 10 11 12 13 14 15 16 17 18 19 20 21 00 01 02 03 04 05 06 07
  *   Port:        B0 B1 B2 B3 B4 B5 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7
+ *
+ * Arduino Pin Layout video: https://youtu.be/rIqeVCX09FA
+ * AVR alternate pin function overview video: https://youtu.be/1yd8wuI5Plg
  */
 
 #include "../fastio.h"
 
-#define DEBUG_LED   AIO5
-
 // UART
-#define RXD         DIO0
-#define TXD         DIO1
+#define RXD         0
+#define TXD         1
 
 // SPI
-#define SCK         DIO13
-#define MISO        DIO12
-#define MOSI        DIO11
-#define SS          DIO10
+#define SS          10
+#define MOSI        11
+#define MISO        12
+#define SCK         13
 
 // TWI (I2C)
 #define SCL         AIO5
 #define SDA         AIO4
 
 // Timers and PWM
-#define OC0A        DIO6
-#define OC0B        DIO5
-#define OC1A        DIO9
-#define OC1B        DIO10
-#define OC2A        DIO11
-#define OC2B        DIO3
+#define OC0A        6
+#define OC0B        5
+#define OC1A        9
+#define OC1B        10
+#define OC2A        11
+#define OC2B        3
 
 // Digital I/O
 

Marlin/src/HAL/AVR/fastio/fastio_644.h

@@ -26,6 +26,9 @@
  *
  *   Logical Pin: 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
  *   Port:        B0 B1 B2 B3 B4 B5 B6 B7 D0 D1 D2 D3 D4 D5 D6 D7 C0 C1 C2 C3 C4 C5 C6 C7 A7 A6 A5 A4 A3 A2 A1 A0
+ *
+ * Arduino Pin Layout video: https://youtu.be/rIqeVCX09FA
+ * AVR alternate pin function overview video: https://youtu.be/1yd8wuI5Plg
  */
 
 /**                        ATMega644
@@ -56,34 +59,32 @@
 
 #include "../fastio.h"
 
-#define DEBUG_LED   DIO0
-
 // UART
-#define RXD         DIO8
-#define TXD         DIO9
-#define RXD0        DIO8
-#define TXD0        DIO9
+#define RXD         8
+#define TXD         9
+#define RXD0        8
+#define TXD0        9
 
-#define RXD1        DIO10
-#define TXD1        DIO11
+#define RXD1        10
+#define TXD1        11
 
 // SPI
-#define SCK         DIO7
-#define MISO        DIO6
-#define MOSI        DIO5
-#define SS          DIO4
+#define SS          4
+#define MOSI        5
+#define MISO        6
+#define SCK         7
 
 // TWI (I2C)
-#define SCL         DIO16
-#define SDA         DIO17
+#define SCL         16
+#define SDA         17
 
 // Timers and PWM
-#define OC0A        DIO3
-#define OC0B        DIO4
-#define OC1A        DIO13
-#define OC1B        DIO12
-#define OC2A        DIO15
-#define OC2B        DIO14
+#define OC0A        3
+#define OC0B        4
+#define OC1A        13
+#define OC1B        12
+#define OC2A        15
+#define OC2B        14
 
 // Digital I/O
 

Marlin/src/HAL/AVR/fastio/fastio_AT90USB.h

@@ -27,18 +27,18 @@
  *   Logical Pin: 28 29 30 31 32 33 34 35 20 21 22 23 24 25 26 27 10 11 12 13 14 15 16 17 00 01 02 03 04 05 06 07 08 09(46*47)36 37 18 19 38 39 40 41 42 43 44 45
  *   Port:        A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7 E0 E1 E2 E3 E4 E5 E6 E7 F0 F1 F2 F3 F4 F5 F6 F7
  *            The logical pins 46 and 47 are not supported by Teensyduino, but are supported below as E2 and E3
+ *
+ * Arduino Pin Layout video: https://youtu.be/rIqeVCX09FA
+ * AVR alternate pin function overview video: https://youtu.be/1yd8wuI5Plg
  */
 
 #include "../fastio.h"
 
-// change for your board
-#define DEBUG_LED   DIO31 /* led D5 red */
-
 // SPI
-#define SCK         DIO21  //  9
-#define MISO        DIO23  // 11
-#define MOSI        DIO22  // 10
-#define SS          DIO20  //  8
+#define SS          20  //  8
+#define SCK         21  //  9
+#define MOSI        22  // 10
+#define MISO        23  // 11
 
 // Digital I/O
 
@@ -679,7 +679,6 @@
 #define PF7_PWM     0
 #define PF7_DDR     DDRF
 
-
 /**
  * Some of the pin mapping functions of the Teensduino extension to the Arduino IDE
  * do not function the same as the other Arduino extensions.

Marlin/src/HAL/AVR/inc/Conditionals_LCD.h

@@ -21,6 +21,6 @@
  */
 #pragma once
 
-#if HAS_SPI_TFT || HAS_FSMC_TFT
-  #error "Sorry! TFT displays are not available for HAL/AVR."
+#ifndef SERIAL_PORT
+  #define SERIAL_PORT 0
 #endif

Marlin/src/HAL/AVR/inc/Conditionals_type.h

@@ -0,0 +1,22 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2024 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once

Marlin/src/HAL/AVR/inc/SanityCheck.h

@@ -25,6 +25,44 @@
  * Test AVR-specific configuration values for errors at compile-time.
  */
 
+#if HAS_SPI_TFT || HAS_FSMC_TFT
+  #error "Sorry! TFT displays are not available for HAL/AVR."
+#endif
+
+/**
+ * Check for common serial pin conflicts
+ */
+#define CHECK_SERIAL_PIN(N) ( \
+     X_STOP_PIN == N || Y_STOP_PIN == N || Z_STOP_PIN  == N \
+  || X_MIN_PIN  == N || Y_MIN_PIN  == N || Z_MIN_PIN   == N \
+  || X_MAX_PIN  == N || Y_MAX_PIN  == N || Z_MAX_PIN   == N \
+  || X_STEP_PIN == N || Y_STEP_PIN == N || Z_STEP_PIN  == N \
+  || X_DIR_PIN  == N || Y_DIR_PIN  == N || Z_DIR_PIN   == N \
+  || X_ENA_PIN  == N || Y_ENA_PIN  == N || Z_ENA_PIN   == N \
+  || BTN_EN1    == N || BTN_EN2    == N || LCD_PINS_EN == N \
+)
+#if SERIAL_IN_USE(0)
+  // D0-D1. No known conflicts.
+#endif
+#if SERIAL_IN_USE(1)
+  #if NOT_TARGET(__AVR_ATmega644P__, __AVR_ATmega1284P__)
+    #if CHECK_SERIAL_PIN(18) || CHECK_SERIAL_PIN(19)
+      #error "Serial Port 1 pin D18 and/or D19 conflicts with another pin on the board."
+    #endif
+  #else
+    #if CHECK_SERIAL_PIN(10) || CHECK_SERIAL_PIN(11)
+      #error "Serial Port 1 pin D10 and/or D11 conflicts with another pin on the board."
+    #endif
+  #endif
+#endif
+#if SERIAL_IN_USE(2) && (CHECK_SERIAL_PIN(16) || CHECK_SERIAL_PIN(17))
+  #error "Serial Port 2 pin D16 and/or D17 conflicts with another pin on the board."
+#endif
+#if SERIAL_IN_USE(3) && (CHECK_SERIAL_PIN(14) || CHECK_SERIAL_PIN(15))
+  #error "Serial Port 3 pin D14 and/or D15 conflicts with another pin on the board."
+#endif
+#undef CHECK_SERIAL_PIN
+
 /**
  * Checks for FAST PWM
  */
@@ -35,8 +73,8 @@
 /**
  * Checks for SOFT PWM
  */
-#if HAS_FAN0 && FAN_PIN == 9 && DISABLED(FAN_SOFT_PWM) && ENABLED(SPEAKER)
-  #error "FAN_PIN 9 Hardware PWM uses Timer 2 which conflicts with Arduino AVR Tone Timer (for SPEAKER)."
+#if HAS_FAN0 && FAN0_PIN == 9 && DISABLED(FAN_SOFT_PWM) && ENABLED(SPEAKER)
+  #error "FAN0_PIN 9 Hardware PWM uses Timer 2 which conflicts with Arduino AVR Tone Timer (for SPEAKER)."
   #error "Disable SPEAKER or enable FAN_SOFT_PWM."
 #endif
 
@@ -57,11 +95,11 @@
 /**
  * The Trinamic library includes SoftwareSerial.h, leading to a compile error.
  */
-#if BOTH(HAS_TRINAMIC_CONFIG, ENDSTOP_INTERRUPTS_FEATURE)
+#if ALL(HAS_TRINAMIC_CONFIG, ENDSTOP_INTERRUPTS_FEATURE)
   #error "TMCStepper includes SoftwareSerial.h which is incompatible with ENDSTOP_INTERRUPTS_FEATURE. Disable ENDSTOP_INTERRUPTS_FEATURE to continue."
 #endif
 
-#if BOTH(HAS_TMC_SW_SERIAL, MONITOR_DRIVER_STATUS)
+#if ALL(HAS_TMC_SW_SERIAL, MONITOR_DRIVER_STATUS)
   #error "MONITOR_DRIVER_STATUS causes performance issues when used with SoftwareSerial-connected drivers. Disable MONITOR_DRIVER_STATUS or use hardware serial to continue."
 #endif
 

Marlin/src/HAL/AVR/math.h

@@ -27,13 +27,14 @@
 
 // intRes = longIn1 * longIn2 >> 24
 // uses:
-// A[tmp] to store 0
-// B[tmp] to store bits 16-23 of the 48bit result. The top bit is used to round the two byte result.
-// note that the lower two bytes and the upper byte of the 48bit result are not calculated.
-// this can cause the result to be out by one as the lower bytes may cause carries into the upper ones.
-// B A are bits 24-39 and are the returned value
-// C B A is longIn1
-// D C B A is longIn2
+// r1, r0 for the result of mul.
+// [tmp1] to store 0.
+// [tmp2] to store bits 16-23 of the 56 bit result. The top bit of [tmp2] is used for rounding.
+// Note that the lower two bytes and the upper two bytes of the 56 bit result are not calculated.
+// This can cause the result to be out by one as the lower bytes may cause carries into the upper ones.
+// [intRes] (A B) is bits 24-39 and is the returned value.
+// [longIn1] (C B A) is a 24 bit parameter.
+// [longIn2] (D C B A) is a 32 bit parameter.
 //
 FORCE_INLINE static uint16_t MultiU24X32toH16(uint32_t longIn1, uint32_t longIn2) {
   uint8_t tmp1;
@@ -66,11 +67,9 @@ FORCE_INLINE static uint16_t MultiU24X32toH16(uint32_t longIn1, uint32_t longIn2
     A("add %[tmp2], r1")
     A("adc %A[intRes], %[tmp1]")
     A("adc %B[intRes], %[tmp1]")
-    A("lsr %[tmp2]")
-    A("adc %A[intRes], %[tmp1]")
-    A("adc %B[intRes], %[tmp1]")
     A("mul %D[longIn2], %A[longIn1]")
-    A("add %A[intRes], r0")
+    A("lsl %[tmp2]")
+    A("adc %A[intRes], r0")
     A("adc %B[intRes], r1")
     A("mul %D[longIn2], %B[longIn1]")
     A("add %B[intRes], r0")
@@ -85,29 +84,26 @@ FORCE_INLINE static uint16_t MultiU24X32toH16(uint32_t longIn1, uint32_t longIn2
   return intRes;
 }
 
-// intRes = intIn1 * intIn2 >> 16
+// charRes = charIn1 * charIn2 >> 8
 // uses:
-// r26 to store 0
-// r27 to store the byte 1 of the 24 bit result
-FORCE_INLINE static uint16_t MultiU16X8toH16(uint8_t charIn1, uint16_t intIn2) {
-  uint8_t tmp;
-  uint16_t intRes;
+// r1, r0 for the result of mul. After the mul, r0 holds bits 0-7 of the 16 bit result,
+//        and the top bit of r0 is used for rounding.
+// [charRes] is bits 8-15 and is the returned value.
+// [charIn1] is an 8 bit parameter.
+// [charIn2] is an 8 bit parameter.
+//
+FORCE_INLINE static uint8_t MultiU8X8toH8(uint8_t charIn1, uint8_t charIn2) {
+  uint8_t charRes;
   __asm__ __volatile__ (
-    A("clr %[tmp]")
-    A("mul %[charIn1], %B[intIn2]")
-    A("movw %A[intRes], r0")
-    A("mul %[charIn1], %A[intIn2]")
-    A("add %A[intRes], r1")
-    A("adc %B[intRes], %[tmp]")
-    A("lsr r0")
-    A("adc %A[intRes], %[tmp]")
-    A("adc %B[intRes], %[tmp]")
+    A("mul %[charIn1], %[charIn2]")
+    A("mov %[charRes], r1")
     A("clr r1")
-      : [intRes] "=&r" (intRes),
-        [tmp] "=&r" (tmp)
+    A("lsl r0")
+    A("adc %[charRes], r1")
+      : [charRes] "=&r" (charRes)
       : [charIn1] "d" (charIn1),
-        [intIn2] "d" (intIn2)
+        [charIn2] "d" (charIn2)
       : "cc"
   );
-  return intRes;
+  return charRes;
 }

Marlin/src/HAL/AVR/pinsDebug.h

@@ -64,23 +64,25 @@
 
 #define VALID_PIN(pin) (pin >= 0 && pin < NUM_DIGITAL_PINS ? 1 : 0)
 #if AVR_ATmega1284_FAMILY
-  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int(analogInputToDigitalPin(0) - (P))
-  #define IS_ANALOG(P) ((P) >= analogInputToDigitalPin(7) && (P) <= analogInputToDigitalPin(0))
+  #define IS_ANALOG(P) WITHIN(P, analogInputToDigitalPin(7), analogInputToDigitalPin(0))
+  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int(IS_ANALOG(P) ? (P) - analogInputToDigitalPin(7) : -1)
 #else
-  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int((P) - analogInputToDigitalPin(0))
-  #define IS_ANALOG(P) ((P) >= analogInputToDigitalPin(0) && ((P) <= analogInputToDigitalPin(15) || (P) <= analogInputToDigitalPin(7)))
+  #define _ANALOG1(P) WITHIN(P, analogInputToDigitalPin(0), analogInputToDigitalPin(7))
+  #define _ANALOG2(P) WITHIN(P, analogInputToDigitalPin(8), analogInputToDigitalPin(15))
+  #define IS_ANALOG(P) (_ANALOG1(P) || _ANALOG2(P))
+  #define DIGITAL_PIN_TO_ANALOG_PIN(P) int(_ANALOG1(P) ? (P) - analogInputToDigitalPin(0) : _ANALOG2(P) ? (P) - analogInputToDigitalPin(8) + 8 : -1)
 #endif
 #define GET_ARRAY_PIN(p) pgm_read_byte(&pin_array[p].pin)
 #define MULTI_NAME_PAD 26 // space needed to be pretty if not first name assigned to a pin
 
 void PRINT_ARRAY_NAME(uint8_t x) {
-  char *name_mem_pointer = (char*)pgm_read_ptr(&pin_array[x].name);
-  LOOP_L_N(y, MAX_NAME_LENGTH) {
+  PGM_P const name_mem_pointer = (PGM_P)pgm_read_ptr(&pin_array[x].name);
+  for (uint8_t y = 0; y < MAX_NAME_LENGTH; ++y) {
     char temp_char = pgm_read_byte(name_mem_pointer + y);
     if (temp_char != 0)
       SERIAL_CHAR(temp_char);
     else {
-      LOOP_L_N(i, MAX_NAME_LENGTH - y) SERIAL_CHAR(' ');
+      for (uint8_t i = 0; i < MAX_NAME_LENGTH - y; ++i) SERIAL_CHAR(' ');
       break;
     }
   }
@@ -88,7 +90,6 @@ void PRINT_ARRAY_NAME(uint8_t x) {
 
 #define GET_ARRAY_IS_DIGITAL(x)   pgm_read_byte(&pin_array[x].is_digital)
 
-
 #if defined(__AVR_ATmega1284P__)  // 1284 IDE extensions set this to the number of
   #undef NUM_DIGITAL_PINS         // digital only pins while all other CPUs have it
   #define NUM_DIGITAL_PINS 32     // set to digital only + digital/analog
@@ -108,7 +109,7 @@ void PRINT_ARRAY_NAME(uint8_t x) {
  * Print a pin's PWM status.
  * Return true if it's currently a PWM pin.
  */
-static bool pwm_status(uint8_t pin) {
+bool pwm_status(uint8_t pin) {
   char buffer[20];   // for the sprintf statements
 
   switch (digitalPinToTimer_DEBUG(pin)) {
@@ -162,7 +163,6 @@ static bool pwm_status(uint8_t pin) {
   SERIAL_ECHO_SP(2);
 } // pwm_status
 
-
 const volatile uint8_t* const PWM_other[][3] PROGMEM = {
     { &TCCR0A, &TCCR0B, &TIMSK0 },
     { &TCCR1A, &TCCR1B, &TIMSK1 },
@@ -180,7 +180,6 @@ const volatile uint8_t* const PWM_other[][3] PROGMEM = {
   #endif
 };
 
-
 const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
 
   #ifdef TIMER0A
@@ -216,7 +215,6 @@ const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
   #endif
 };
 
-
 #define TCCR_A(T)   pgm_read_word(&PWM_other[T][0])
 #define TCCR_B(T)   pgm_read_word(&PWM_other[T][1])
 #define TIMSK(T)    pgm_read_word(&PWM_other[T][2])
@@ -231,12 +229,12 @@ const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
 
 #define OCR_VAL(T, L)   pgm_read_word(&PWM_OCR[T][L])
 
-static void err_is_counter()     { SERIAL_ECHOPGM("   non-standard PWM mode"); }
-static void err_is_interrupt()   { SERIAL_ECHOPGM("   compare interrupt enabled"); }
-static void err_prob_interrupt() { SERIAL_ECHOPGM("   overflow interrupt enabled"); }
-static void print_is_also_tied() { SERIAL_ECHOPGM(" is also tied to this pin"); SERIAL_ECHO_SP(14); }
+void err_is_counter()     { SERIAL_ECHOPGM("   non-standard PWM mode"); }
+void err_is_interrupt()   { SERIAL_ECHOPGM("   compare interrupt enabled"); }
+void err_prob_interrupt() { SERIAL_ECHOPGM("   overflow interrupt enabled"); }
+void print_is_also_tied() { SERIAL_ECHOPGM(" is also tied to this pin"); SERIAL_ECHO_SP(14); }
 
-inline void com_print(const uint8_t N, const uint8_t Z) {
+void com_print(const uint8_t N, const uint8_t Z) {
   const uint8_t *TCCRA = (uint8_t*)TCCR_A(N);
   SERIAL_ECHOPGM("    COM", AS_DIGIT(N));
   SERIAL_CHAR(Z);
@@ -278,7 +276,7 @@ void timer_prefix(uint8_t T, char L, uint8_t N) {  // T - timer    L - pwm  N -
   if (TEST(*TMSK, TOIE)) err_prob_interrupt();
 }
 
-static void pwm_details(uint8_t pin) {
+void pwm_details(uint8_t pin) {
   switch (digitalPinToTimer_DEBUG(pin)) {
 
     #if ABTEST(0)
@@ -352,47 +350,41 @@ static void pwm_details(uint8_t pin) {
 } // pwm_details
 
 #ifndef digitalRead_mod                   // Use Teensyduino's version of digitalRead - it doesn't disable the PWMs
-  int digitalRead_mod(const int8_t pin) { // same as digitalRead except the PWM stop section has been removed
+  int digitalRead_mod(const pin_t pin) {  // same as digitalRead except the PWM stop section has been removed
     const uint8_t port = digitalPinToPort_DEBUG(pin);
     return (port != NOT_A_PIN) && (*portInputRegister(port) & digitalPinToBitMask_DEBUG(pin)) ? HIGH : LOW;
   }
 #endif
 
-#ifndef PRINT_PORT
+void print_port(const pin_t pin) {   // print port number
+  #ifdef digitalPinToPort_DEBUG
+    uint8_t x;
+    SERIAL_ECHOPGM("  Port: ");
+    #if AVR_AT90USB1286_FAMILY
+      x = (pin == 46 || pin == 47) ? 'E' : digitalPinToPort_DEBUG(pin) + 64;
+    #else
+      x = digitalPinToPort_DEBUG(pin) + 64;
+    #endif
+    SERIAL_CHAR(x);
 
-  void print_port(int8_t pin) {   // print port number
-    #ifdef digitalPinToPort_DEBUG
-      uint8_t x;
-      SERIAL_ECHOPGM("  Port: ");
-      #if AVR_AT90USB1286_FAMILY
-        x = (pin == 46 || pin == 47) ? 'E' : digitalPinToPort_DEBUG(pin) + 64;
-      #else
-        x = digitalPinToPort_DEBUG(pin) + 64;
-      #endif
-      SERIAL_CHAR(x);
-
-      #if AVR_AT90USB1286_FAMILY
-        if (pin == 46)
-          x = '2';
-        else if (pin == 47)
-          x = '3';
-        else {
-          uint8_t temp = digitalPinToBitMask_DEBUG(pin);
-          for (x = '0'; x < '9' && temp != 1; x++) temp >>= 1;
-        }
-      #else
+    #if AVR_AT90USB1286_FAMILY
+      if (pin == 46)
+        x = '2';
+      else if (pin == 47)
+        x = '3';
+      else {
         uint8_t temp = digitalPinToBitMask_DEBUG(pin);
         for (x = '0'; x < '9' && temp != 1; x++) temp >>= 1;
-      #endif
-      SERIAL_CHAR(x);
+      }
     #else
-      SERIAL_ECHO_SP(10);
+      uint8_t temp = digitalPinToBitMask_DEBUG(pin);
+      for (x = '0'; x < '9' && temp != 1; x++) temp >>= 1;
     #endif
-  }
-
-  #define PRINT_PORT(p) print_port(p)
-
-#endif
+    SERIAL_CHAR(x);
+  #else
+    SERIAL_ECHO_SP(10);
+  #endif
+}
 
 #define PRINT_PIN(p) do{ sprintf_P(buffer, PSTR("%3d "), p); SERIAL_ECHO(buffer); }while(0)
 #define PRINT_PIN_ANALOG(p) do{ sprintf_P(buffer, PSTR(" (A%2d)  "), DIGITAL_PIN_TO_ANALOG_PIN(pin)); SERIAL_ECHO(buffer); }while(0)

Marlin/src/HAL/AVR/pinsDebug_Teensyduino.h

@@ -22,11 +22,10 @@
 #pragma once
 
 //
-//  some of the pin mapping functions of the Teensduino extension to the Arduino IDE
-//  do not function the same as the other Arduino extensions
+// Some of the pin mapping functions of the Arduino IDE Teensduino extension
+// function differently from other Arduino extensions.
 //
 
-
 #define TEENSYDUINO_IDE
 
 //digitalPinToTimer(pin) function works like Arduino but Timers are not defined
@@ -48,8 +47,6 @@
 #define PE 5
 #define PF 6
 
-#undef digitalPinToPort
-
 const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
   PD, // 0  - PD0 - INT0 - PWM
   PD, // 1  - PD1 - INT1 - PWM
@@ -101,7 +98,7 @@ const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
   PE, // 47 - PE3 (not defined in teensyduino)
 };
 
-#define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) )
+#define digitalPinToPort(P) pgm_read_byte(digital_pin_to_port_PGM[P])
 
 // digitalPinToBitMask(pin) is OK
 

Marlin/src/HAL/AVR/pinsDebug_plus_70.h

@@ -231,7 +231,6 @@ const uint8_t PROGMEM digital_pin_to_bit_mask_PGM_plus_70[] = {
 
 #define digitalPinToBitMask_plus_70(P) ( pgm_read_byte( digital_pin_to_bit_mask_PGM_plus_70 + (P) ) )
 
-
 const uint8_t PROGMEM digital_pin_to_timer_PGM_plus_70[] = {
   // TIMERS
   // ------------------------

Marlin/src/HAL/AVR/registers.cpp

@@ -0,0 +1,979 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2023 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef __AVR__
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(HAL_AVR_DIRTY_INIT)
+
+#include "registers.h"
+
+// Since the compiler could be creating multiple copies of function code-graphs for each header inline-inclusion,
+// we want to off-load the function definitions that define static memory into this solitary compilation unit.
+// This way the ROM is NOT bloated (who knows if the compiler is optimizing same-content constant objects into one?)
+
+ATmegaPinFunctions _ATmega_getPinFunctions(int pin) {
+  if (pin < 0) return {};
+
+  ATmegaPinInfo info = _ATmega_getPinInfo((unsigned int)pin);
+
+  #ifdef __AVR_TRM01__
+    if (info.port == eATmegaPort::PORT_A) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_B) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC0A, eATmegaPinFunc::TOC1C, eATmegaPinFunc::PCI7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1B, eATmegaPinFunc::PCI6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1A, eATmegaPinFunc::PCI5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC2A, eATmegaPinFunc::PCI4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_MISO, eATmegaPinFunc::PCI3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_MOSI, eATmegaPinFunc::PCI2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_SCK, eATmegaPinFunc::PCI1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_CS, eATmegaPinFunc::PCI0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_C) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD15 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD14 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD13 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD12 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD11 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD10 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD9 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD8 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_D) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER0_CLKI };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_CLKI };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART1_CLK };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_ICP };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT3, eATmegaPinFunc::USART1_TXD };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT2, eATmegaPinFunc::USART1_RXD };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT1, eATmegaPinFunc::TWI_SDA };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT0, eATmegaPinFunc::TWI_CLK };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_E) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT7, eATmegaPinFunc::TIMER3_ICP, eATmegaPinFunc::CLKO };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT6, eATmegaPinFunc::TIMER3_CLKI };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT5, eATmegaPinFunc::TOC3C };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT4, eATmegaPinFunc::TOC3B };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::AIN1, eATmegaPinFunc::TOC3A };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::AIN0, eATmegaPinFunc::USART0_CLK };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PDO, eATmegaPinFunc::USART0_TXD };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PDI, eATmegaPinFunc::USART0_RXD, eATmegaPinFunc::PCI8 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_F) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_G) {
+      if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC0B };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOSC1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3 ) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOSC2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_ALE };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_RD };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_WR };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_H) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER4_CLKI };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC2B };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC4C };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC4B };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC4A };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART2_CLK };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART2_TXD };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART2_RXD };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_J) {
+      if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI15 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI14 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI13 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI12 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART3_CLK, eATmegaPinFunc::PCI11 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART3_TXD, eATmegaPinFunc::PCI10 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART3_RXD, eATmegaPinFunc::PCI9 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_K) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC15, eATmegaPinFunc::PCI23 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC14, eATmegaPinFunc::PCI22 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC13, eATmegaPinFunc::PCI21 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC12, eATmegaPinFunc::PCI20 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC11, eATmegaPinFunc::PCI19 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC10, eATmegaPinFunc::PCI18 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC9, eATmegaPinFunc::PCI17 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC8, eATmegaPinFunc::PCI16 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_L) {
+      if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC5C };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC5B };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC5A };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER5_CLKI };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER5_ICP };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER4_ICP };
+        return { funcs, countof(funcs) };
+      }
+    }
+  #elif defined(__AVR_TRM02__)
+    if (info.port == eATmegaPort::PORT_A) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI7, eATmegaPinFunc::ADC7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI6, eATmegaPinFunc::ADC6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI5, eATmegaPinFunc::ADC5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI4, eATmegaPinFunc::ADC4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI3, eATmegaPinFunc::ADC3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI2, eATmegaPinFunc::ADC2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI1, eATmegaPinFunc::ADC1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI0, eATmegaPinFunc::ADC0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_B) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_SCK, eATmegaPinFunc::TOC3B, eATmegaPinFunc::PCI15 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_MISO, eATmegaPinFunc::TOC3A, eATmegaPinFunc::PCI14 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_MOSI, eATmegaPinFunc::TIMER3_ICP, eATmegaPinFunc::PCI13 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_CS, eATmegaPinFunc::TOC0B, eATmegaPinFunc::PCI12 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::AIN1, eATmegaPinFunc::TOC0A, eATmegaPinFunc::PCI11 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::AIN0, eATmegaPinFunc::EINT2, eATmegaPinFunc::PCI10 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_ECI, eATmegaPinFunc::CLKO, eATmegaPinFunc::PCI9 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER0_ECI, eATmegaPinFunc::USART0_CLK, eATmegaPinFunc::PCI8 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_C) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOSC2, eATmegaPinFunc::PCI23 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOSC1, eATmegaPinFunc::PCI22 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI21 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI20 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI19 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI18 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI17, eATmegaPinFunc::TWI_SDA };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TWI_CLK, eATmegaPinFunc::PCI16 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_D) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC2A, eATmegaPinFunc::PCI31 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_ICP, eATmegaPinFunc::TOC2B, eATmegaPinFunc::PCI30 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1A, eATmegaPinFunc::PCI29 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1B, eATmegaPinFunc::USART1_CLK, eATmegaPinFunc::PCI28 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT1, eATmegaPinFunc::USART1_TXD, eATmegaPinFunc::PCI27 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT0, eATmegaPinFunc::USART1_RXD, eATmegaPinFunc::PCI26 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART0_TXD, eATmegaPinFunc::PCI25 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART0_TXD, eATmegaPinFunc::PCI24, eATmegaPinFunc::TIMER3_ECI };
+        return { funcs, countof(funcs) };
+      }
+    }
+  #elif defined(__AVR_TRM03__)
+    if (info.port == eATmegaPort::PORT_B) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::XTAL2, eATmegaPinFunc::TOSC2, eATmegaPinFunc::PCI7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::XTAL1, eATmegaPinFunc::TOSC1, eATmegaPinFunc::PCI6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_SCK, eATmegaPinFunc::PCI5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_MISO, eATmegaPinFunc::PCI4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_MOSI, eATmegaPinFunc::TOC2A, eATmegaPinFunc::PCI3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_CS, eATmegaPinFunc::TOC1B, eATmegaPinFunc::PCI2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1A, eATmegaPinFunc::PCI1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_ICP, eATmegaPinFunc::CLKO, eATmegaPinFunc::PCI0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_C) {
+      if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI14 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC5, eATmegaPinFunc::TWI_CLK, eATmegaPinFunc::PCI13 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC4, eATmegaPinFunc::TWI_SDA, eATmegaPinFunc::PCI12 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC3, eATmegaPinFunc::PCI11 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC2, eATmegaPinFunc::PCI10 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC1, eATmegaPinFunc::PCI9 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC0, eATmegaPinFunc::PCI8 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_D) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::AIN1, eATmegaPinFunc::PCI23 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::AIN0, eATmegaPinFunc::TOC0A, eATmegaPinFunc::PCI22 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_ECI, eATmegaPinFunc::TOC0B, eATmegaPinFunc::PCI21 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART_CLK, eATmegaPinFunc::TIMER0_ECI, eATmegaPinFunc::PCI20 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT1, eATmegaPinFunc::TOC2B, eATmegaPinFunc::PCI19 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT0, eATmegaPinFunc::PCI18 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART_TXD, eATmegaPinFunc::PCI17 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART_RXD, eATmegaPinFunc::PCI16 };
+        return { funcs, countof(funcs) };
+      }
+    }
+  #elif defined(__AVR_TRM04__)
+    if (info.port == eATmegaPort::PORT_A) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_B) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC0A, eATmegaPinFunc::TOC1C, eATmegaPinFunc::PCI7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1B, eATmegaPinFunc::PCI6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1A, eATmegaPinFunc::PCI5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC2A, eATmegaPinFunc::PCI4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PDO, eATmegaPinFunc::SPI_MISO, eATmegaPinFunc::PCI3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PDI, eATmegaPinFunc::SPI_MOSI, eATmegaPinFunc::PCI2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_SCK, eATmegaPinFunc::PCI1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_CS, eATmegaPinFunc::PCI0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_C) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD15, eATmegaPinFunc::TIMER3_ICP, eATmegaPinFunc::CLKO };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD14, eATmegaPinFunc::TOC3A };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD13, eATmegaPinFunc::TOC3B };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD12, eATmegaPinFunc::TOC3C };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD11, eATmegaPinFunc::TIMER3_CLKI };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD10 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD9 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_AD8 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_D) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER0_CLKI };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_CLKI };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART1_CLK };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_ICP };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT3, eATmegaPinFunc::USART1_TXD };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT2, eATmegaPinFunc::USART1_RXD };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT1, eATmegaPinFunc::TWI_SDA, eATmegaPinFunc::TOC2B };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT0, eATmegaPinFunc::TWI_CLK, eATmegaPinFunc::TOC0B };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_E) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT7, eATmegaPinFunc::AIN1, eATmegaPinFunc::UVCON };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT6, eATmegaPinFunc::AIN0 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT5, eATmegaPinFunc::TOSC2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT4, eATmegaPinFunc::TOSC2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::UID };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_ALE };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_RD };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EXTMEM_WR };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_F) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+  #elif defined(__AVR_TRM05__)
+    if (info.port == eATmegaPort::PORT_A) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC7, eATmegaPinFunc::PCI7 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC6, eATmegaPinFunc::PCI6 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC5, eATmegaPinFunc::PCI5 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC4, eATmegaPinFunc::PCI4 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC3, eATmegaPinFunc::PCI3 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC2, eATmegaPinFunc::PCI2 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC1, eATmegaPinFunc::PCI1 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::ADC0, eATmegaPinFunc::PCI0 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_B) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_SCK, eATmegaPinFunc::PCI15 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_MISO, eATmegaPinFunc::PCI14 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_MOSI, eATmegaPinFunc::PCI13 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::SPI_CS, eATmegaPinFunc::TOC0B, eATmegaPinFunc::PCI12 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::AIN1, eATmegaPinFunc::TOC0A, eATmegaPinFunc::PCI11 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::AIN0, eATmegaPinFunc::EINT2, eATmegaPinFunc::PCI10 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_ECI, eATmegaPinFunc::CLKO, eATmegaPinFunc::PCI9 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER0_ECI, eATmegaPinFunc::USART0_CLK, eATmegaPinFunc::PCI8 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_C) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOSC2, eATmegaPinFunc::PCI23 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOSC1, eATmegaPinFunc::PCI22 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI21 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI20 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI19 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::PCI18 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TWI_SDA, eATmegaPinFunc::PCI17 };
+        return { funcs, countof(funcs) };
+      }
+      else if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TWI_CLK, eATmegaPinFunc::PCI16 };
+        return { funcs, countof(funcs) };
+      }
+    }
+    else if (info.port == eATmegaPort::PORT_D) {
+      if (info.pinidx == 7) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC2A, eATmegaPinFunc::PCI31 };
+        return { funcs, countof(funcs) };
+      }
+      if (info.pinidx == 6) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TIMER1_ICP, eATmegaPinFunc::TOC2B, eATmegaPinFunc::PCI30 };
+        return { funcs, countof(funcs) };
+      }
+      if (info.pinidx == 5) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1A, eATmegaPinFunc::PCI29 };
+        return { funcs, countof(funcs) };
+      }
+      if (info.pinidx == 4) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::TOC1B, eATmegaPinFunc::USART1_CLK, eATmegaPinFunc::PCI28 };
+        return { funcs, countof(funcs) };
+      }
+      if (info.pinidx == 3) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT1, eATmegaPinFunc::USART1_TXD, eATmegaPinFunc::PCI27 };
+        return { funcs, countof(funcs) };
+      }
+      if (info.pinidx == 2) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::EINT0, eATmegaPinFunc::USART1_RXD, eATmegaPinFunc::PCI26 };
+        return { funcs, countof(funcs) };
+      }
+      if (info.pinidx == 1) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART0_TXD, eATmegaPinFunc::PCI25 };
+        return { funcs, countof(funcs) };
+      }
+      if (info.pinidx == 0) {
+        static const eATmegaPinFunc funcs[] = { eATmegaPinFunc::USART0_RXD, eATmegaPinFunc::PCI24 };
+        return { funcs, countof(funcs) };
+      }
+    }
+  #endif
+
+  return ATmegaPinFunctions();  // default and empty.
+}
+
+#endif // HAL_AVR_DIRTY_INIT
+#endif // __AVR__

Marlin/src/HAL/AVR/timers.h

@@ -1,7 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -44,14 +46,14 @@ typedef uint16_t hal_timer_t;
   #define MF_TIMER_TEMP         0
 #endif
 
-#define TEMP_TIMER_FREQUENCY    ((F_CPU) / 64.0 / 256.0)
+#define TEMP_TIMER_FREQUENCY    (((F_CPU) + 0x2000) / 0x4000)
 
 #define STEPPER_TIMER_RATE      HAL_TIMER_RATE
 #define STEPPER_TIMER_PRESCALE  8
-#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000) // Cannot be of type double
+#define STEPPER_TIMER_TICKS_PER_US ((STEPPER_TIMER_RATE) / 1000000)
 
-#define PULSE_TIMER_RATE       STEPPER_TIMER_RATE   // frequency of pulse timer
-#define PULSE_TIMER_PRESCALE   STEPPER_TIMER_PRESCALE
+#define PULSE_TIMER_RATE         STEPPER_TIMER_RATE
+#define PULSE_TIMER_PRESCALE     STEPPER_TIMER_PRESCALE
 #define PULSE_TIMER_TICKS_PER_US STEPPER_TIMER_TICKS_PER_US
 
 #define ENABLE_STEPPER_DRIVER_INTERRUPT()  SBI(TIMSK1, OCIE1A)

Marlin/src/HAL/AVR/u8g/LCD_defines.h

@@ -0,0 +1,29 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2023 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * AVR LCD-specific defines
+ */
+
+uint8_t u8g_com_HAL_AVR_sw_sp_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
+#define U8G_COM_HAL_SW_SPI_FN u8g_com_HAL_AVR_sw_sp_fn

Marlin/src/HAL/AVR/u8g_com_HAL_AVR_sw_spi.cpp

@@ -88,7 +88,7 @@ void u8g_spiSend_sw_AVR_mode_0(uint8_t val) {
   volatile uint8_t *outData = u8g_outData,
                    *outClock = u8g_outClock;
   U8G_ATOMIC_START();
-  LOOP_L_N(i, 8) {
+  for (uint8_t i = 0; i < 8; ++i) {
     if (val & 0x80)
       *outData |= bitData;
     else
@@ -108,7 +108,7 @@ void u8g_spiSend_sw_AVR_mode_3(uint8_t val) {
   volatile uint8_t *outData = u8g_outData,
                    *outClock = u8g_outClock;
   U8G_ATOMIC_START();
-  LOOP_L_N(i, 8) {
+  for (uint8_t i = 0; i < 8; ++i) {
     *outClock &= bitNotClock;
     if (val & 0x80)
       *outData |= bitData;
@@ -120,7 +120,6 @@ void u8g_spiSend_sw_AVR_mode_3(uint8_t val) {
   U8G_ATOMIC_END();
 }
 
-
 #if ENABLED(FYSETC_MINI_12864)
   #define SPISEND_SW_AVR u8g_spiSend_sw_AVR_mode_3
 #else

Marlin/src/HAL/AVR/watchdog.cpp

@@ -1,70 +0,0 @@
-/**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- *
- */
-#ifdef __AVR__
-
-#include "../../inc/MarlinConfig.h"
-
-#if ENABLED(USE_WATCHDOG)
-
-#include "watchdog.h"
-
-#include "../../MarlinCore.h"
-
-// Initialize watchdog with 8s timeout, if possible. Otherwise, make it 4s.
-void watchdog_init() {
-  #if ENABLED(WATCHDOG_DURATION_8S) && defined(WDTO_8S)
-    #define WDTO_NS WDTO_8S
-  #else
-    #define WDTO_NS WDTO_4S
-  #endif
-  #if ENABLED(WATCHDOG_RESET_MANUAL)
-    // Enable the watchdog timer, but only for the interrupt.
-    // Take care, as this requires the correct order of operation, with interrupts disabled.
-    // See the datasheet of any AVR chip for details.
-    wdt_reset();
-    cli();
-    _WD_CONTROL_REG = _BV(_WD_CHANGE_BIT) | _BV(WDE);
-    _WD_CONTROL_REG = _BV(WDIE) | (WDTO_NS & 0x07) | ((WDTO_NS & 0x08) << 2); // WDTO_NS directly does not work. bit 0-2 are consecutive in the register but the highest value bit is at bit 5
-                                                                              // So worked for up to WDTO_2S
-    sei();
-    wdt_reset();
-  #else
-    wdt_enable(WDTO_NS); // The function handles the upper bit correct.
-  #endif
-  //delay(10000); // test it!
-}
-
-//===========================================================================
-//=================================== ISR ===================================
-//===========================================================================
-
-// Watchdog timer interrupt, called if main program blocks >4sec and manual reset is enabled.
-#if ENABLED(WATCHDOG_RESET_MANUAL)
-  ISR(WDT_vect) {
-    sei();  // With the interrupt driven serial we need to allow interrupts.
-    SERIAL_ERROR_MSG(STR_WATCHDOG_FIRED);
-    minkill();  // interrupt-safe final kill and infinite loop
-  }
-#endif
-
-#endif // USE_WATCHDOG
-#endif // __AVR__

Marlin/src/HAL/DUE/HAL.cpp

@@ -1,7 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -25,7 +27,7 @@
 #ifdef ARDUINO_ARCH_SAM
 
 #include "../../inc/MarlinConfig.h"
-#include "HAL.h"
+#include "../../MarlinCore.h"
 
 #include <Wire.h>
 #include "usb/usb_task.h"
@@ -40,14 +42,15 @@ uint16_t MarlinHAL::adc_result;
 // Public functions
 // ------------------------
 
-TERN_(POSTMORTEM_DEBUGGING, extern void install_min_serial());
+#if ENABLED(POSTMORTEM_DEBUGGING)
+  extern void install_min_serial();
+#endif
 
 void MarlinHAL::init() {
-  // Initialize the USB stack
-  #if ENABLED(SDSUPPORT)
+  #if HAS_MEDIA
     OUT_WRITE(SDSS, HIGH);  // Try to set SDSS inactive before any other SPI users start up
   #endif
-  usb_task_init();
+  usb_task_init();          // Initialize the USB stack
   TERN_(POSTMORTEM_DEBUGGING, install_min_serial()); // Install the min serial handler
 }
 
@@ -72,6 +75,103 @@ uint8_t MarlinHAL::get_reset_source() {
 
 void MarlinHAL::reboot() { rstc_start_software_reset(RSTC); }
 
+// ------------------------
+// Watchdog Timer
+// ------------------------
+
+#if ENABLED(USE_WATCHDOG)
+
+  // Initialize watchdog - On SAM3X, Watchdog was already configured
+  //  and enabled or disabled at startup, so no need to reconfigure it
+  //  here.
+  void MarlinHAL::watchdog_init() { WDT_Restart(WDT); } // Reset watchdog to start clean
+
+  // Reset watchdog. MUST be called at least every 4 seconds after the
+  // first watchdog_init or AVR will go into emergency procedures.
+  void MarlinHAL::watchdog_refresh() { watchdogReset(); }
+
+#endif
+
+// Override Arduino runtime to either config or disable the watchdog
+//
+// We need to configure the watchdog as soon as possible in the boot
+// process, because watchdog initialization at hardware reset on SAM3X8E
+// is unreliable, and there is risk of unintended resets if we delay
+// that initialization to a later time.
+void watchdogSetup() {
+
+  #if ENABLED(USE_WATCHDOG)
+
+    // 4 seconds timeout
+    uint32_t timeout = TERN(WATCHDOG_DURATION_8S, 8000, 4000);
+
+    // Calculate timeout value in WDT counter ticks: This assumes
+    // the slow clock is running at 32.768 kHz watchdog
+    // frequency is therefore 32768 / 128 = 256 Hz
+    timeout = (timeout << 8) / 1000;
+    if (timeout == 0)
+      timeout = 1;
+    else if (timeout > 0xFFF)
+      timeout = 0xFFF;
+
+    // We want to enable the watchdog with the specified timeout
+    uint32_t value =
+      WDT_MR_WDV(timeout) |               // With the specified timeout
+      WDT_MR_WDD(timeout) |               // and no invalid write window
+    #if !(SAMV70 || SAMV71 || SAME70 || SAMS70)
+      WDT_MR_WDRPROC   |                  // WDT fault resets processor only - We want
+                                          // to keep PIO controller state
+    #endif
+      WDT_MR_WDDBGHLT  |                  // WDT stops in debug state.
+      WDT_MR_WDIDLEHLT;                   // WDT stops in idle state.
+
+    #if ENABLED(WATCHDOG_RESET_MANUAL)
+      // We enable the watchdog timer, but only for the interrupt.
+
+      // Configure WDT to only trigger an interrupt
+      value |= WDT_MR_WDFIEN;             // Enable WDT fault interrupt.
+
+      // Disable WDT interrupt (just in case, to avoid triggering it!)
+      NVIC_DisableIRQ(WDT_IRQn);
+
+      // We NEED memory barriers to ensure Interrupts are actually disabled!
+      // ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
+      __DSB();
+      __ISB();
+
+      // Initialize WDT with the given parameters
+      WDT_Enable(WDT, value);
+
+      // Configure and enable WDT interrupt.
+      NVIC_ClearPendingIRQ(WDT_IRQn);
+      NVIC_SetPriority(WDT_IRQn, 0); // Use highest priority, so we detect all kinds of lockups
+      NVIC_EnableIRQ(WDT_IRQn);
+
+    #else
+
+      // a WDT fault triggers a reset
+      value |= WDT_MR_WDRSTEN;
+
+      // Initialize WDT with the given parameters
+      WDT_Enable(WDT, value);
+
+    #endif
+
+    // Reset the watchdog
+    WDT_Restart(WDT);
+
+  #else
+
+    // Make sure to completely disable the Watchdog
+    WDT_Disable(WDT);
+
+  #endif
+}
+
+// ------------------------
+// Free Memory Accessor
+// ------------------------
+
 extern "C" {
   extern unsigned int _ebss; // end of bss section
 }
@@ -82,6 +182,10 @@ int freeMemory() {
   return (int)&free_memory - (heap_end ?: (int)&_ebss);
 }
 
+// ------------------------
+// Serial Ports
+// ------------------------
+
 // Forward the default serial ports
 #if USING_HW_SERIAL0
   DefaultSerial1 MSerial0(false, Serial);

Marlin/src/HAL/DUE/HAL.h

@@ -1,9 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -32,7 +32,6 @@
 #include "../shared/math_32bit.h"
 #include "../shared/HAL_SPI.h"
 #include "fastio.h"
-#include "watchdog.h"
 
 #include <stdint.h>
 
@@ -115,8 +114,8 @@ typedef Servo hal_servo_t;
 //
 // Interrupts
 //
-#define sei() noInterrupts()
-#define cli() interrupts()
+#define sei() interrupts()
+#define cli() noInterrupts()
 
 #define CRITICAL_SECTION_START()  const bool _irqon = hal.isr_state(); hal.isr_off()
 #define CRITICAL_SECTION_END()    if (_irqon) hal.isr_on()
@@ -124,7 +123,7 @@ typedef Servo hal_servo_t;
 //
 // ADC
 //
-#define HAL_ADC_VREF         3.3
+#define HAL_ADC_VREF_MV   3300
 #define HAL_ADC_RESOLUTION  10
 
 #ifndef analogInputToDigitalPin
@@ -176,9 +175,13 @@ public:
   // Earliest possible init, before setup()
   MarlinHAL() {}
 
-  static void init();       // Called early in setup()
-  static void init_board(); // Called less early in setup()
-  static void reboot();     // Software reset
+  // Watchdog
+  static void watchdog_init()    IF_DISABLED(USE_WATCHDOG, {});
+  static void watchdog_refresh() IF_DISABLED(USE_WATCHDOG, {});
+
+  static void init();          // Called early in setup()
+  static void init_board();    // Called less early in setup()
+  static void reboot();        // Restart the firmware
 
   // Interrupts
   static bool isr_state() { return !__get_PRIMASK(); }
@@ -207,9 +210,9 @@ public:
   static void adc_init() {}
 
   // Called by Temperature::init for each sensor at startup
-  static void adc_enable(const uint8_t ch) {}
+  static void adc_enable(const uint8_t /*ch*/) {}
 
-  // Begin ADC sampling on the given channel
+  // Begin ADC sampling on the given channel. Called from Temperature::isr!
   static void adc_start(const uint8_t ch) { adc_result = analogRead(ch); }
 
   // Is the ADC ready for reading?

Marlin/src/HAL/DUE/HAL_SPI.cpp

@@ -31,8 +31,6 @@
 
 /**
  * HAL for Arduino Due and compatible (SAM3X8E)
- *
- * For ARDUINO_ARCH_SAM
  */
 
 #ifdef ARDUINO_ARCH_SAM
@@ -44,7 +42,7 @@
 // Public functions
 // ------------------------
 
-#if EITHER(DUE_SOFTWARE_SPI, FORCE_SOFT_SPI)
+#if ANY(SOFTWARE_SPI, FORCE_SOFT_SPI)
 
   // ------------------------
   // Software SPI
@@ -249,12 +247,12 @@
       b <<= 1; // little setup time
 
       WRITE(SD_SCK_PIN, HIGH);
-      DELAY_NS(spiDelayNS);
+      DELAY_NS_VAR(spiDelayNS);
 
       b |= (READ(SD_MISO_PIN) != 0);
 
       WRITE(SD_SCK_PIN, LOW);
-      DELAY_NS(spiDelayNS);
+      DELAY_NS_VAR(spiDelayNS);
     } while (--bits);
     return b;
   }

Marlin/src/HAL/DUE/InterruptVectors.cpp

@@ -41,7 +41,7 @@
    practice, we need alignment to 256 bytes to make this work in all
    cases */
 __attribute__ ((aligned(256)))
-static DeviceVectors ram_tab = { nullptr };
+static DeviceVectors ram_tab[61] = { nullptr };
 
 /**
  * This function checks if the exception/interrupt table is already in SRAM or not.

Marlin/src/HAL/DUE/MarlinSerial.cpp

@@ -474,7 +474,6 @@ void MarlinSerial<Cfg>::flushTX() {
   }
 }
 
-
 // If not using the USB port as serial port
 #if defined(SERIAL_PORT) && SERIAL_PORT >= 0
   template class MarlinSerial< MarlinSerialCfg<SERIAL_PORT> >;

Marlin/src/HAL/DUE/MarlinSerial.h

@@ -30,6 +30,7 @@
 #include <WString.h>
 
 #include "../../inc/MarlinConfigPre.h"
+#include "../../core/types.h"
 #include "../../core/serial_hook.h"
 
 // Define constants and variables for buffering incoming serial data.  We're
@@ -52,10 +53,6 @@
 //  #error "TX_BUFFER_SIZE must be 0, a power of 2 greater than 1, and no greater than 256."
 //#endif
 
-// Templated type selector
-template<bool b, typename T, typename F> struct TypeSelector { typedef T type;} ;
-template<typename T, typename F> struct TypeSelector<false, T, F> { typedef F type; };
-
 // Templated structure wrapper
 template<typename S, unsigned int addr> struct StructWrapper {
   constexpr StructWrapper(int) {}
@@ -76,7 +73,7 @@ protected:
   static constexpr int HWUART_IRQ_ID = IRQ_IDS[Cfg::PORT];
 
   // Base size of type on buffer size
-  typedef typename TypeSelector<(Cfg::RX_SIZE>256), uint16_t, uint8_t>::type ring_buffer_pos_t;
+  typedef uvalue_t(Cfg::RX_SIZE - 1) ring_buffer_pos_t;
 
   struct ring_buffer_r {
     volatile ring_buffer_pos_t head, tail;

Marlin/src/HAL/DUE/MinSerial.cpp

@@ -25,7 +25,7 @@
 
 #if ENABLED(POSTMORTEM_DEBUGGING)
 
-#include "../shared/HAL_MinSerial.h"
+#include "../shared/MinSerial.h"
 
 #include <stdarg.h>
 
@@ -73,18 +73,18 @@ void install_min_serial() {
 }
 
 #if DISABLED(DYNAMIC_VECTORTABLE)
-extern "C" {
-  __attribute__((naked)) void JumpHandler_ASM() {
-    __asm__ __volatile__ (
-      "b CommonHandler_ASM\n"
-    );
+  extern "C" {
+    __attribute__((naked)) void JumpHandler_ASM() {
+      __asm__ __volatile__ (
+        "b CommonHandler_ASM\n"
+      );
+    }
+    void __attribute__((naked, alias("JumpHandler_ASM"))) HardFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"))) BusFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"))) UsageFault_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"))) MemManage_Handler();
+    void __attribute__((naked, alias("JumpHandler_ASM"))) NMI_Handler();
   }
-  void __attribute__((naked, alias("JumpHandler_ASM"))) HardFault_Handler();
-  void __attribute__((naked, alias("JumpHandler_ASM"))) BusFault_Handler();
-  void __attribute__((naked, alias("JumpHandler_ASM"))) UsageFault_Handler();
-  void __attribute__((naked, alias("JumpHandler_ASM"))) MemManage_Handler();
-  void __attribute__((naked, alias("JumpHandler_ASM"))) NMI_Handler();
-}
 #endif
 
 #endif // POSTMORTEM_DEBUGGING

Marlin/src/HAL/DUE/Servo.cpp

@@ -47,12 +47,12 @@
 #include "../shared/servo.h"
 #include "../shared/servo_private.h"
 
-static volatile int8_t Channel[_Nbr_16timers];              // counter for the servo being pulsed for each timer (or -1 if refresh interval)
+static Flags<_Nbr_16timers> DisablePending; // ISR should disable the timer at the next timer reset
 
 // ------------------------
 /// Interrupt handler for the TC0 channel 1.
 // ------------------------
-void Servo_Handler(timer16_Sequence_t timer, Tc *pTc, uint8_t channel);
+void Servo_Handler(const timer16_Sequence_t, Tc*, const uint8_t);
 
 #ifdef _useTimer1
   void HANDLER_FOR_TIMER1() { Servo_Handler(_timer1, TC_FOR_TIMER1, CHANNEL_FOR_TIMER1); }
@@ -70,88 +70,92 @@ void Servo_Handler(timer16_Sequence_t timer, Tc *pTc, uint8_t channel);
   void HANDLER_FOR_TIMER5() { Servo_Handler(_timer5, TC_FOR_TIMER5, CHANNEL_FOR_TIMER5); }
 #endif
 
-void Servo_Handler(timer16_Sequence_t timer, Tc *tc, uint8_t channel) {
-  // clear interrupt
-  tc->TC_CHANNEL[channel].TC_SR;
-  if (Channel[timer] < 0)
-    tc->TC_CHANNEL[channel].TC_CCR |= TC_CCR_SWTRG; // channel set to -1 indicated that refresh interval completed so reset the timer
-  else if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && SERVO(timer, Channel[timer]).Pin.isActive)
-    extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, LOW); // pulse this channel low if activated
+void Servo_Handler(const timer16_Sequence_t timer, Tc *tc, const uint8_t channel) {
+  static int8_t Channel[_Nbr_16timers];                               // Servo counters to pulse (or -1 for refresh interval)
+  int8_t cho = Channel[timer];                                        // Handle the prior Channel[timer] first
+  if (cho < 0) {                                                      // Channel -1 indicates the refresh interval completed...
+    tc->TC_CHANNEL[channel].TC_CCR |= TC_CCR_SWTRG;                   // ...so reset the timer
+    if (DisablePending[timer]) {
+      // Disabling only after the full servo period expires prevents
+      // pulses being too close together if immediately re-enabled.
+      DisablePending.clear(timer);
+      TC_Stop(tc, channel);
+      tc->TC_CHANNEL[channel].TC_SR;                                  // clear interrupt
+      return;
+    }
+  }
+  else if (SERVO_INDEX(timer, cho) < ServoCount)                      // prior channel handled?
+    extDigitalWrite(SERVO(timer, cho).Pin.nbr, LOW);                  // pulse the prior channel LOW
 
-  Channel[timer]++;    // increment to the next channel
-  if (SERVO_INDEX(timer, Channel[timer]) < ServoCount && Channel[timer] < SERVOS_PER_TIMER) {
-    tc->TC_CHANNEL[channel].TC_RA = tc->TC_CHANNEL[channel].TC_CV + SERVO(timer,Channel[timer]).ticks;
-    if (SERVO(timer,Channel[timer]).Pin.isActive)    // check if activated
-      extDigitalWrite(SERVO(timer, Channel[timer]).Pin.nbr, HIGH); // its an active channel so pulse it high
+  Channel[timer] = ++cho;                                             // go to the next channel (or 0)
+  if (cho < SERVOS_PER_TIMER && SERVO_INDEX(timer, cho) < ServoCount) {
+    tc->TC_CHANNEL[channel].TC_RA = tc->TC_CHANNEL[channel].TC_CV + SERVO(timer, cho).ticks;
+    if (SERVO(timer, cho).Pin.isActive)                               // activated?
+      extDigitalWrite(SERVO(timer, cho).Pin.nbr, HIGH);               // yes: pulse HIGH
   }
   else {
     // finished all channels so wait for the refresh period to expire before starting over
-    tc->TC_CHANNEL[channel].TC_RA =
-      tc->TC_CHANNEL[channel].TC_CV < usToTicks(REFRESH_INTERVAL) - 4
-        ? (unsigned int)usToTicks(REFRESH_INTERVAL) // allow a few ticks to ensure the next OCR1A not missed
-        : tc->TC_CHANNEL[channel].TC_CV + 4;        // at least REFRESH_INTERVAL has elapsed
-    Channel[timer] = -1; // this will get incremented at the end of the refresh period to start again at the first channel
+    const unsigned int cval = tc->TC_CHANNEL[channel].TC_CV + 128 / (SERVO_TIMER_PRESCALER), // allow 128 cycles to ensure the next CV not missed
+                       ival = (unsigned int)usToTicks(REFRESH_INTERVAL); // at least REFRESH_INTERVAL has elapsed
+    tc->TC_CHANNEL[channel].TC_RA = max(cval, ival);
+
+    Channel[timer] = -1;                                              // reset the timer CCR on the next call
   }
+
+  tc->TC_CHANNEL[channel].TC_SR;                                      // clear interrupt
 }
 
 static void _initISR(Tc *tc, uint32_t channel, uint32_t id, IRQn_Type irqn) {
   pmc_enable_periph_clk(id);
   TC_Configure(tc, channel,
-    TC_CMR_TCCLKS_TIMER_CLOCK3 | // MCK/32
-    TC_CMR_WAVE |                // Waveform mode
-    TC_CMR_WAVSEL_UP_RC );       // Counter running up and reset when equals to RC
+      TC_CMR_WAVE                   // Waveform mode
+    | TC_CMR_WAVSEL_UP_RC           // Counter running up and reset when equal to RC
+    | (SERVO_TIMER_PRESCALER ==   2 ? TC_CMR_TCCLKS_TIMER_CLOCK1 : 0) // MCK/2
+    | (SERVO_TIMER_PRESCALER ==   8 ? TC_CMR_TCCLKS_TIMER_CLOCK2 : 0) // MCK/8
+    | (SERVO_TIMER_PRESCALER ==  32 ? TC_CMR_TCCLKS_TIMER_CLOCK3 : 0) // MCK/32
+    | (SERVO_TIMER_PRESCALER == 128 ? TC_CMR_TCCLKS_TIMER_CLOCK4 : 0) // MCK/128
+  );
 
-  /* 84MHz, MCK/32, for 1.5ms: 3937 */
-  TC_SetRA(tc, channel, 2625); // 1ms
+  // Wait 1ms before the first ISR
+  TC_SetRA(tc, channel, (F_CPU) / (SERVO_TIMER_PRESCALER) / 1000UL); // 1ms
 
-  /* Configure and enable interrupt */
+  // Configure and enable interrupt
   NVIC_EnableIRQ(irqn);
-  // TC_IER_CPAS: RA Compare
-  tc->TC_CHANNEL[channel].TC_IER = TC_IER_CPAS;
+  tc->TC_CHANNEL[channel].TC_IER = TC_IER_CPAS; // TC_IER_CPAS: RA Compare
 
   // Enables the timer clock and performs a software reset to start the counting
   TC_Start(tc, channel);
 }
 
-void initISR(timer16_Sequence_t timer) {
-  #ifdef _useTimer1
-    if (timer == _timer1)
-      _initISR(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1, ID_TC_FOR_TIMER1, IRQn_FOR_TIMER1);
-  #endif
-  #ifdef _useTimer2
-    if (timer == _timer2)
-      _initISR(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2, ID_TC_FOR_TIMER2, IRQn_FOR_TIMER2);
-  #endif
-  #ifdef _useTimer3
-    if (timer == _timer3)
-      _initISR(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3, ID_TC_FOR_TIMER3, IRQn_FOR_TIMER3);
-  #endif
-  #ifdef _useTimer4
-    if (timer == _timer4)
-      _initISR(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4, ID_TC_FOR_TIMER4, IRQn_FOR_TIMER4);
-  #endif
-  #ifdef _useTimer5
-    if (timer == _timer5)
-      _initISR(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5, ID_TC_FOR_TIMER5, IRQn_FOR_TIMER5);
-  #endif
+void initISR(const timer16_Sequence_t timer_index) {
+  CRITICAL_SECTION_START();
+  const bool disable_soon = DisablePending[timer_index];
+  DisablePending.clear(timer_index);
+  CRITICAL_SECTION_END();
+
+  if (!disable_soon) switch (timer_index) {
+    default: break;
+    #ifdef _useTimer1
+      case _timer1: return _initISR(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1, ID_TC_FOR_TIMER1, IRQn_FOR_TIMER1);
+    #endif
+    #ifdef _useTimer2
+      case _timer2: return _initISR(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2, ID_TC_FOR_TIMER2, IRQn_FOR_TIMER2);
+    #endif
+    #ifdef _useTimer3
+      case _timer3: return _initISR(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3, ID_TC_FOR_TIMER3, IRQn_FOR_TIMER3);
+    #endif
+    #ifdef _useTimer4
+      case _timer4: return _initISR(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4, ID_TC_FOR_TIMER4, IRQn_FOR_TIMER4);
+    #endif
+    #ifdef _useTimer5
+      case _timer5: return _initISR(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5, ID_TC_FOR_TIMER5, IRQn_FOR_TIMER5);
+    #endif
+  }
 }
 
-void finISR(timer16_Sequence_t) {
-  #ifdef _useTimer1
-    TC_Stop(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1);
-  #endif
-  #ifdef _useTimer2
-    TC_Stop(TC_FOR_TIMER2, CHANNEL_FOR_TIMER2);
-  #endif
-  #ifdef _useTimer3
-    TC_Stop(TC_FOR_TIMER3, CHANNEL_FOR_TIMER3);
-  #endif
-  #ifdef _useTimer4
-    TC_Stop(TC_FOR_TIMER4, CHANNEL_FOR_TIMER4);
-  #endif
-  #ifdef _useTimer5
-    TC_Stop(TC_FOR_TIMER5, CHANNEL_FOR_TIMER5);
-  #endif
+void finISR(const timer16_Sequence_t timer_index) {
+  // Timer is disabled from the ISR, to ensure proper final pulse length.
+  DisablePending.set(timer_index);
 }
 
 #endif // HAS_SERVOS

Marlin/src/HAL/DUE/ServoTimers.h

@@ -37,7 +37,7 @@
 #define _useTimer5
 
 #define TRIM_DURATION             2   // compensation ticks to trim adjust for digitalWrite delays
-#define SERVO_TIMER_PRESCALER     32  // timer prescaler
+#define SERVO_TIMER_PRESCALER     2   // timer prescaler
 
 /*
   TC0, chan 0 => TC0_Handler

Marlin/src/HAL/DUE/eeprom_flash.cpp

@@ -1,10 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
- * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -199,8 +198,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
   for (i = 0; i <PageSize >> 2; i++)
     pageContents[i] = (((uint32_t*)data)[i]) | (~(pageContents[i] ^ ((uint32_t*)data)[i]));
 
-  DEBUG_ECHO_START();
-  DEBUG_ECHOLNPGM("EEPROM PageWrite   ", page);
+  DEBUG_ECHO_MSG("EEPROM PageWrite   ", page);
   DEBUG_ECHOLNPGM(" in FLASH address ", (uint32_t)addrflash);
   DEBUG_ECHOLNPGM(" base address     ", (uint32_t)getFlashStorage(0));
   DEBUG_FLUSH();
@@ -245,8 +243,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
     // Reenable interrupts
     __enable_irq();
 
-    DEBUG_ECHO_START();
-    DEBUG_ECHOLNPGM("EEPROM Unlock failure for page ", page);
+    DEBUG_ECHO_MSG("EEPROM Unlock failure for page ", page);
     return false;
   }
 
@@ -270,8 +267,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
     // Reenable interrupts
     __enable_irq();
 
-    DEBUG_ECHO_START();
-    DEBUG_ECHOLNPGM("EEPROM Write failure for page ", page);
+    DEBUG_ECHO_MSG("EEPROM Write failure for page ", page);
 
     return false;
   }
@@ -286,8 +282,7 @@ static bool ee_PageWrite(uint16_t page, const void *data) {
   if (memcmp(getFlashStorage(page),data,PageSize)) {
 
     #ifdef EE_EMU_DEBUG
-      DEBUG_ECHO_START();
-      DEBUG_ECHOLNPGM("EEPROM Verify Write failure for page ", page);
+      DEBUG_ECHO_MSG("EEPROM Verify Write failure for page ", page);
 
       ee_Dump( page, (uint32_t *)addrflash);
       ee_Dump(-page, data);
@@ -325,8 +320,7 @@ static bool ee_PageErase(uint16_t page) {
   uint16_t i;
   uint32_t addrflash = uint32_t(getFlashStorage(page));
 
-  DEBUG_ECHO_START();
-  DEBUG_ECHOLNPGM("EEPROM PageErase  ", page);
+  DEBUG_ECHO_MSG("EEPROM PageErase  ", page);
   DEBUG_ECHOLNPGM(" in FLASH address ", (uint32_t)addrflash);
   DEBUG_ECHOLNPGM(" base address     ", (uint32_t)getFlashStorage(0));
   DEBUG_FLUSH();
@@ -370,8 +364,7 @@ static bool ee_PageErase(uint16_t page) {
     // Reenable interrupts
     __enable_irq();
 
-    DEBUG_ECHO_START();
-    DEBUG_ECHOLNPGM("EEPROM Unlock failure for page ",page);
+    DEBUG_ECHO_MSG("EEPROM Unlock failure for page ",page);
 
     return false;
   }
@@ -394,8 +387,7 @@ static bool ee_PageErase(uint16_t page) {
     // Reenable interrupts
     __enable_irq();
 
-    DEBUG_ECHO_START();
-    DEBUG_ECHOLNPGM("EEPROM Erase failure for page ",page);
+    DEBUG_ECHO_MSG("EEPROM Erase failure for page ",page);
 
     return false;
   }
@@ -410,8 +402,7 @@ static bool ee_PageErase(uint16_t page) {
   uint32_t * aligned_src = (uint32_t *) addrflash;
   for (i = 0; i < PageSize >> 2; i++) {
     if (*aligned_src++ != 0xFFFFFFFF) {
-      DEBUG_ECHO_START();
-      DEBUG_ECHOLNPGM("EEPROM Verify Erase failure for page ",page);
+      DEBUG_ECHO_MSG("EEPROM Verify Erase failure for page ",page);
       ee_Dump(page, (uint32_t *)addrflash);
       return false;
     }
@@ -921,8 +912,7 @@ static void ee_Init() {
   // If all groups seem to be used, default to first group
   if (curGroup >= GroupCount) curGroup = 0;
 
-  DEBUG_ECHO_START();
-  DEBUG_ECHOLNPGM("EEPROM Current Group: ",curGroup);
+  DEBUG_ECHO_MSG("EEPROM Current Group: ",curGroup);
   DEBUG_FLUSH();
 
   // Now, validate that all the other group pages are empty
@@ -931,8 +921,7 @@ static void ee_Init() {
 
     for (int page = 0; page < PagesPerGroup; page++) {
       if (!ee_IsPageClean(grp * PagesPerGroup + page)) {
-        DEBUG_ECHO_START();
-        DEBUG_ECHOLNPGM("EEPROM Page ", page, " not clean on group ", grp);
+        DEBUG_ECHO_MSG("EEPROM Page ", page, " not clean on group ", grp);
         DEBUG_FLUSH();
         ee_PageErase(grp * PagesPerGroup + page);
       }
@@ -948,15 +937,13 @@ static void ee_Init() {
     }
   }
 
-  DEBUG_ECHO_START();
-  DEBUG_ECHOLNPGM("EEPROM Active page: ", curPage);
+  DEBUG_ECHO_MSG("EEPROM Active page: ", curPage);
   DEBUG_FLUSH();
 
   // Make sure the pages following the first clean one are also clean
   for (int page = curPage + 1; page < PagesPerGroup; page++) {
     if (!ee_IsPageClean(curGroup * PagesPerGroup + page)) {
-      DEBUG_ECHO_START();
-      DEBUG_ECHOLNPGM("EEPROM Page ", page, " not clean on active group ", curGroup);
+      DEBUG_ECHO_MSG("EEPROM Page ", page, " not clean on active group ", curGroup);
       DEBUG_FLUSH();
       ee_Dump(curGroup * PagesPerGroup + page, getFlashStorage(curGroup * PagesPerGroup + page));
       ee_PageErase(curGroup * PagesPerGroup + page);
@@ -971,14 +958,14 @@ static void ee_Init() {
 #ifndef MARLIN_EEPROM_SIZE
   #define MARLIN_EEPROM_SIZE 0x1000 // 4KB
 #endif
-size_t PersistentStore::capacity()    { return MARLIN_EEPROM_SIZE; }
+size_t PersistentStore::capacity()    { return MARLIN_EEPROM_SIZE - eeprom_exclude_size; }
 bool PersistentStore::access_start()  { ee_Init();  return true; }
 bool PersistentStore::access_finish() { ee_Flush(); return true; }
 
 bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
   uint16_t written = 0;
   while (size--) {
-    uint8_t * const p = (uint8_t * const)pos;
+    uint8_t * const p = (uint8_t * const)REAL_EEPROM_ADDR(pos);
     uint8_t v = *value;
     if (v != ee_Read(uint32_t(p))) { // EEPROM has only ~100,000 write cycles, so only write bytes that have changed!
       ee_Write(uint32_t(p), v);
@@ -997,7 +984,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
 
 bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
   do {
-    uint8_t c = ee_Read(uint32_t(pos));
+    uint8_t c = ee_Read(uint32_t(REAL_EEPROM_ADDR(pos)));
     if (writing) *value = c;
     crc16(crc, &c, 1);
     pos++;

Marlin/src/HAL/DUE/eeprom_wired.cpp

@@ -1,10 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
- * Copyright (c) 2016 Victor Perez victor_pv@hotmail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -37,14 +36,14 @@
 #ifndef MARLIN_EEPROM_SIZE
   #error "MARLIN_EEPROM_SIZE is required for I2C / SPI EEPROM."
 #endif
-size_t PersistentStore::capacity()    { return MARLIN_EEPROM_SIZE; }
+size_t PersistentStore::capacity()    { return MARLIN_EEPROM_SIZE - eeprom_exclude_size; }
 bool PersistentStore::access_start()  { eeprom_init(); return true; }
 bool PersistentStore::access_finish() { return true; }
 
 bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, uint16_t *crc) {
   uint16_t written = 0;
   while (size--) {
-    uint8_t * const p = (uint8_t * const)pos;
+    uint8_t * const p = (uint8_t * const)REAL_EEPROM_ADDR(pos);
     uint8_t v = *value;
     if (v != eeprom_read_byte(p)) { // EEPROM has only ~100,000 write cycles, so only write bytes that have changed!
       eeprom_write_byte(p, v);
@@ -63,7 +62,7 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
 
 bool PersistentStore::read_data(int &pos, uint8_t *value, size_t size, uint16_t *crc, const bool writing/*=true*/) {
   do {
-    uint8_t c = eeprom_read_byte((uint8_t*)pos);
+    const uint8_t c = eeprom_read_byte((uint8_t*)REAL_EEPROM_ADDR(pos));
     if (writing) *value = c;
     crc16(crc, &c, 1);
     pos++;

Marlin/src/HAL/DUE/endstop_interrupts.h

@@ -47,33 +47,33 @@ void endstop_ISR() { endstops.update(); }
 
 void setup_endstop_interrupts() {
   #define _ATTACH(P) attachInterrupt(digitalPinToInterrupt(P), endstop_ISR, CHANGE)
-  TERN_(HAS_X_MAX, _ATTACH(X_MAX_PIN));
-  TERN_(HAS_X_MIN, _ATTACH(X_MIN_PIN));
-  TERN_(HAS_Y_MAX, _ATTACH(Y_MAX_PIN));
-  TERN_(HAS_Y_MIN, _ATTACH(Y_MIN_PIN));
-  TERN_(HAS_Z_MAX, _ATTACH(Z_MAX_PIN));
-  TERN_(HAS_Z_MIN, _ATTACH(Z_MIN_PIN));
-  TERN_(HAS_X2_MAX, _ATTACH(X2_MAX_PIN));
-  TERN_(HAS_X2_MIN, _ATTACH(X2_MIN_PIN));
-  TERN_(HAS_Y2_MAX, _ATTACH(Y2_MAX_PIN));
-  TERN_(HAS_Y2_MIN, _ATTACH(Y2_MIN_PIN));
-  TERN_(HAS_Z2_MAX, _ATTACH(Z2_MAX_PIN));
-  TERN_(HAS_Z2_MIN, _ATTACH(Z2_MIN_PIN));
-  TERN_(HAS_Z3_MAX, _ATTACH(Z3_MAX_PIN));
-  TERN_(HAS_Z3_MIN, _ATTACH(Z3_MIN_PIN));
-  TERN_(HAS_Z4_MAX, _ATTACH(Z4_MAX_PIN));
-  TERN_(HAS_Z4_MIN, _ATTACH(Z4_MIN_PIN));
-  TERN_(HAS_Z_MIN_PROBE_PIN, _ATTACH(Z_MIN_PROBE_PIN));
-  TERN_(HAS_I_MAX, _ATTACH(I_MAX_PIN));
-  TERN_(HAS_I_MIN, _ATTACH(I_MIN_PIN));
-  TERN_(HAS_J_MAX, _ATTACH(J_MAX_PIN));
-  TERN_(HAS_J_MIN, _ATTACH(J_MIN_PIN));
-  TERN_(HAS_K_MAX, _ATTACH(K_MAX_PIN));
-  TERN_(HAS_K_MIN, _ATTACH(K_MIN_PIN));
-  TERN_(HAS_U_MAX, _ATTACH(U_MAX_PIN));
-  TERN_(HAS_U_MIN, _ATTACH(U_MIN_PIN));
-  TERN_(HAS_V_MAX, _ATTACH(V_MAX_PIN));
-  TERN_(HAS_V_MIN, _ATTACH(V_MIN_PIN));
-  TERN_(HAS_W_MAX, _ATTACH(W_MAX_PIN));
-  TERN_(HAS_W_MIN, _ATTACH(W_MIN_PIN));
+  TERN_(USE_X_MAX,       _ATTACH(X_MAX_PIN));
+  TERN_(USE_X_MIN,       _ATTACH(X_MIN_PIN));
+  TERN_(USE_Y_MAX,       _ATTACH(Y_MAX_PIN));
+  TERN_(USE_Y_MIN,       _ATTACH(Y_MIN_PIN));
+  TERN_(USE_Z_MAX,       _ATTACH(Z_MAX_PIN));
+  TERN_(USE_Z_MIN,       _ATTACH(Z_MIN_PIN));
+  TERN_(USE_X2_MAX,      _ATTACH(X2_MAX_PIN));
+  TERN_(USE_X2_MIN,      _ATTACH(X2_MIN_PIN));
+  TERN_(USE_Y2_MAX,      _ATTACH(Y2_MAX_PIN));
+  TERN_(USE_Y2_MIN,      _ATTACH(Y2_MIN_PIN));
+  TERN_(USE_Z2_MAX,      _ATTACH(Z2_MAX_PIN));
+  TERN_(USE_Z2_MIN,      _ATTACH(Z2_MIN_PIN));
+  TERN_(USE_Z3_MAX,      _ATTACH(Z3_MAX_PIN));
+  TERN_(USE_Z3_MIN,      _ATTACH(Z3_MIN_PIN));
+  TERN_(USE_Z4_MAX,      _ATTACH(Z4_MAX_PIN));
+  TERN_(USE_Z4_MIN,      _ATTACH(Z4_MIN_PIN));
+  TERN_(USE_Z_MIN_PROBE, _ATTACH(Z_MIN_PROBE_PIN));
+  TERN_(USE_I_MAX,       _ATTACH(I_MAX_PIN));
+  TERN_(USE_I_MIN,       _ATTACH(I_MIN_PIN));
+  TERN_(USE_J_MAX,       _ATTACH(J_MAX_PIN));
+  TERN_(USE_J_MIN,       _ATTACH(J_MIN_PIN));
+  TERN_(USE_K_MAX,       _ATTACH(K_MAX_PIN));
+  TERN_(USE_K_MIN,       _ATTACH(K_MIN_PIN));
+  TERN_(USE_U_MAX,       _ATTACH(U_MAX_PIN));
+  TERN_(USE_U_MIN,       _ATTACH(U_MIN_PIN));
+  TERN_(USE_V_MAX,       _ATTACH(V_MAX_PIN));
+  TERN_(USE_V_MIN,       _ATTACH(V_MIN_PIN));
+  TERN_(USE_W_MAX,       _ATTACH(W_MAX_PIN));
+  TERN_(USE_W_MIN,       _ATTACH(W_MIN_PIN));
 }

Marlin/src/HAL/DUE/fastio.h

@@ -189,12 +189,12 @@
  */
 
 // UART
-#define RXD        DIO0
-#define TXD        DIO1
+#define RXD        0
+#define TXD        1
 
 // TWI (I2C)
-#define SCL        DIO21
-#define SDA        DIO20
+#define SCL        21
+#define SDA        20
 
 /**
  * pins

Marlin/src/HAL/DUE/fastio/G2_PWM.cpp

@@ -61,7 +61,7 @@
 #else
   #define G2_PWM_Z 0
 #endif
-#if PIN_EXISTS(MOTOR_CURRENT_PWM_E)
+#if HAS_MOTOR_CURRENT_PWM_E
   #define G2_PWM_E 1
 #else
   #define G2_PWM_E 0

Marlin/src/HAL/DUE/fastio/G2_PWM.h

@@ -49,7 +49,6 @@ extern volatile uint32_t *SODR_A, *SODR_B, *CODR_A, *CODR_B;
 
 #define PWM_MAP_INIT_ROW(IO,ZZ) { ZZ == 'A' ? SODR_A : SODR_B,  ZZ == 'A' ? CODR_A : CODR_B, 1 << _PIN(IO) }
 
-
 #define PWM_MAP_INIT {  PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_X_PIN, 'B'), \
                         PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_Y_PIN, 'B'), \
                         PWM_MAP_INIT_ROW(MOTOR_CURRENT_PWM_Z_PIN, 'B'), \
@@ -63,7 +62,7 @@ extern PWM_map ISR_table[NUM_PWMS];
 extern uint32_t motor_current_setting[3];
 
 #define IR_BIT(p) (WITHIN(p, 0, 3) ? (p) : (p) + 4)
-#define COPY_ACTIVE_TABLE() do{ LOOP_L_N(i, 6) work_table[i] = active_table[i]; }while(0)
+#define COPY_ACTIVE_TABLE() do{ for (uint8_t i = 0; i < 6; ++i) work_table[i] = active_table[i]; }while(0)
 
 #define PWM_MR0 19999         // base repetition rate minus one count - 20mS
 #define PWM_PR 24             // prescaler value - prescaler divide by 24 + 1  -  1 MHz output

Marlin/src/HAL/DUE/fastio/G2_pins.h

@@ -168,7 +168,6 @@ const G2_PinDescription G2_g_APinDescription[] = {
   { PIOB, PIO_PB21,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NOT_ON_PWM,  NOT_ON_TIMER }, // PIN 52
   { PIOB, PIO_PB14,          ID_PIOB, PIO_OUTPUT_0, PIO_DEFAULT, PIN_ATTR_DIGITAL,                  NO_ADC, NO_ADC, NOT_ON_PWM,  NOT_ON_TIMER }, // PIN 53
 
-
   // 54 .. 65 - Analog pins
   // ----------------------
   { PIOA, PIO_PA16X1_AD7,    ID_PIOA, PIO_INPUT,    PIO_DEFAULT, PIN_ATTR_ANALOG,                   ADC0,   ADC7,   NOT_ON_PWM,  NOT_ON_TIMER }, // AD0

Marlin/src/HAL/DUE/inc/Conditionals_LCD.h

@@ -20,7 +20,3 @@
  *
  */
 #pragma once
-
-#if HAS_SPI_TFT || HAS_FSMC_TFT
-  #error "Sorry! TFT displays are not available for HAL/DUE."
-#endif

Marlin/src/HAL/DUE/inc/Conditionals_post.h

@@ -23,6 +23,6 @@
 
 #if USE_FALLBACK_EEPROM
   #define FLASH_EEPROM_EMULATION
-#elif EITHER(I2C_EEPROM, SPI_EEPROM)
+#elif ANY(I2C_EEPROM, SPI_EEPROM)
   #define USE_SHARED_EEPROM 1
 #endif

Marlin/src/HAL/DUE/inc/Conditionals_type.h

@@ -0,0 +1,22 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2024 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once

Marlin/src/HAL/DUE/inc/SanityCheck.h

@@ -25,6 +25,34 @@
  * Test Arduino Due specific configuration values for errors at compile-time.
  */
 
+#if HAS_SPI_TFT || HAS_FSMC_TFT
+  #error "Sorry! TFT displays are not available for HAL/DUE."
+#endif
+
+/**
+ * Check for common serial pin conflicts
+ */
+#define CHECK_SERIAL_PIN(N) ( \
+     X_STOP_PIN == N || Y_STOP_PIN == N || Z_STOP_PIN == N \
+  || X_MIN_PIN  == N || Y_MIN_PIN  == N || Z_MIN_PIN  == N \
+  || X_MAX_PIN  == N || Y_MAX_PIN  == N || Z_MAX_PIN  == N \
+  || X_STEP_PIN == N || Y_STEP_PIN == N || Z_STEP_PIN == N \
+  || X_DIR_PIN  == N || Y_DIR_PIN  == N || Z_DIR_PIN  == N \
+  || X_ENA_PIN  == N || Y_ENA_PIN  == N || Z_ENA_PIN  == N \
+)
+#if SERIAL_IN_USE(0) // D0-D1. No known conflicts.
+#endif
+#if SERIAL_IN_USE(1) && (CHECK_SERIAL_PIN(18) || CHECK_SERIAL_PIN(19))
+  #error "Serial Port 1 pin D18 and/or D19 conflicts with another pin on the board."
+#endif
+#if SERIAL_IN_USE(2) && (CHECK_SERIAL_PIN(16) || CHECK_SERIAL_PIN(17))
+  #error "Serial Port 2 pin D16 and/or D17 conflicts with another pin on the board."
+#endif
+#if SERIAL_IN_USE(3) && (CHECK_SERIAL_PIN(14) || CHECK_SERIAL_PIN(15))
+  #error "Serial Port 3 pin D14 and/or D15 conflicts with another pin on the board."
+#endif
+#undef CHECK_SERIAL_PIN
+
 /**
  * HARDWARE VS. SOFTWARE SPI COMPATIBILITY
  *
@@ -40,20 +68,20 @@
  * Usually the hardware SPI pins are only available to the LCD. This makes the DUE hard SPI used at the same time
  * as the TMC2130 soft SPI the most common setup.
  */
-#define _IS_HW_SPI(P) (defined(TMC_SW_##P) && (TMC_SW_##P == SD_MOSI_PIN || TMC_SW_##P == SD_MISO_PIN || TMC_SW_##P == SD_SCK_PIN))
+#define _IS_HW_SPI(P) (defined(TMC_SPI_##P) && (TMC_SPI_##P == SD_MOSI_PIN || TMC_SPI_##P == SD_MISO_PIN || TMC_SPI_##P == SD_SCK_PIN))
 
-#if ENABLED(SDSUPPORT) && HAS_DRIVER(TMC2130)
+#if HAS_MEDIA && HAS_DRIVER(TMC2130)
   #if ENABLED(TMC_USE_SW_SPI)
-    #if DISABLED(DUE_SOFTWARE_SPI) && (_IS_HW_SPI(MOSI) || _IS_HW_SPI(MISO) || _IS_HW_SPI(SCK))
+    #if DISABLED(SOFTWARE_SPI) && (_IS_HW_SPI(MOSI) || _IS_HW_SPI(MISO) || _IS_HW_SPI(SCK))
       #error "DUE hardware SPI is required but is incompatible with TMC2130 software SPI. Either disable TMC_USE_SW_SPI or use separate pins for the two SPIs."
     #endif
-  #elif ENABLED(DUE_SOFTWARE_SPI)
+  #elif ENABLED(SOFTWARE_SPI)
     #error "DUE software SPI is required but is incompatible with TMC2130 hardware SPI. Enable TMC_USE_SW_SPI to fix."
   #endif
 #endif
 
 #if ENABLED(FAST_PWM_FAN) || SPINDLE_LASER_FREQUENCY
-  #error "Features requiring Hardware PWM (FAST_PWM_FAN, SPINDLE_LASER_FREQUENCY) are not yet supported on DUE."
+  #error "Features requiring Hardware PWM (FAST_PWM_FAN, SPINDLE_LASER_FREQUENCY) are not yet supported for HAL/DUE."
 #endif
 
 #if HAS_TMC_SW_SERIAL

Marlin/src/HAL/DUE/pinsDebug.h

@@ -64,13 +64,12 @@
 #define NUMBER_PINS_TOTAL PINS_COUNT
 
 #define digitalRead_mod(p) extDigitalRead(p)  // AVR digitalRead disabled PWM before it read the pin
-#define PRINT_PORT(p)
 #define PRINT_ARRAY_NAME(x) do{ sprintf_P(buffer, PSTR("%-" STRINGIFY(MAX_NAME_LENGTH) "s"), pin_array[x].name); SERIAL_ECHO(buffer); }while(0)
 #define PRINT_PIN(p) do{ sprintf_P(buffer, PSTR("%02d"), p); SERIAL_ECHO(buffer); }while(0)
 #define PRINT_PIN_ANALOG(p) do{ sprintf_P(buffer, PSTR(" (A%2d)  "), DIGITAL_PIN_TO_ANALOG_PIN(pin)); SERIAL_ECHO(buffer); }while(0)
 #define GET_ARRAY_PIN(p) pin_array[p].pin
 #define GET_ARRAY_IS_DIGITAL(p) pin_array[p].is_digital
-#define VALID_PIN(pin) (pin >= 0 && pin < (int8_t)NUMBER_PINS_TOTAL ? 1 : 0)
+#define VALID_PIN(pin) (pin >= 0 && pin < int8_t(NUMBER_PINS_TOTAL))
 #define DIGITAL_PIN_TO_ANALOG_PIN(p) int(p - analogInputToDigitalPin(0))
 #define IS_ANALOG(P) WITHIN(P, char(analogInputToDigitalPin(0)), char(analogInputToDigitalPin(NUM_ANALOG_INPUTS - 1)))
 #define pwm_status(pin) (((g_pinStatus[pin] & 0xF) == PIN_STATUS_PWM) && \
@@ -86,7 +85,6 @@ bool GET_PINMODE(int8_t pin) {  // 1: output, 0: input
           || pwm_status(pin));
 }
 
-
 void pwm_details(int32_t pin) {
   if (pwm_status(pin)) {
     uint32_t chan = g_APinDescription[pin].ulPWMChannel;
@@ -94,6 +92,8 @@ void pwm_details(int32_t pin) {
   }
 }
 
+void print_port(const pin_t) {}
+
 /**
  * DUE Board pin   |  PORT  | Label
  * ----------------+--------+-------

Marlin/src/HAL/DUE/spi_pins.h

@@ -48,7 +48,7 @@
   #define SD_MOSI_PIN       75
 #else
   // defaults
-  #define DUE_SOFTWARE_SPI
+  #define SOFTWARE_SPI
   #ifndef SD_SCK_PIN
     #define SD_SCK_PIN      52
   #endif

Marlin/src/HAL/DUE/timers.cpp

@@ -1,9 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
- * Copyright (c) 2015-2016 Nico Tonnhofer wurstnase.reprap@gmail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -89,10 +89,17 @@ void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
   NVIC_SetPriority(irq, timer_config[timer_num].priority);
 
   // wave mode, reset counter on match with RC,
-  TC_Configure(tc, channel, TC_CMR_WAVE | TC_CMR_WAVSEL_UP_RC | TC_CMR_TCCLKS_TIMER_CLOCK1);
+  TC_Configure(tc, channel,
+      TC_CMR_WAVE
+    | TC_CMR_WAVSEL_UP_RC
+    | (HAL_TIMER_PRESCALER ==   2 ? TC_CMR_TCCLKS_TIMER_CLOCK1 : 0)
+    | (HAL_TIMER_PRESCALER ==   8 ? TC_CMR_TCCLKS_TIMER_CLOCK2 : 0)
+    | (HAL_TIMER_PRESCALER ==  32 ? TC_CMR_TCCLKS_TIMER_CLOCK3 : 0)
+    | (HAL_TIMER_PRESCALER == 128 ? TC_CMR_TCCLKS_TIMER_CLOCK4 : 0)
+  );
 
   // Set compare value
-  TC_SetRC(tc, channel, VARIANT_MCK / 2 / frequency);
+  TC_SetRC(tc, channel, VARIANT_MCK / (HAL_TIMER_PRESCALER) / frequency);
 
   // And start timer
   TC_Start(tc, channel);

Marlin/src/HAL/DUE/timers.h

@@ -1,8 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -35,7 +36,8 @@
 typedef uint32_t hal_timer_t;
 #define HAL_TIMER_TYPE_MAX 0xFFFFFFFF
 
-#define HAL_TIMER_RATE         ((F_CPU) / 2)    // frequency of timers peripherals
+#define HAL_TIMER_PRESCALER    2
+#define HAL_TIMER_RATE         ((F_CPU) / (HAL_TIMER_PRESCALER))  // frequency of timers peripherals
 
 #ifndef MF_TIMER_STEP
   #define MF_TIMER_STEP         2  // Timer Index for Stepper

Marlin/src/HAL/DUE/u8g/LCD_defines.h

@@ -0,0 +1,34 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2023 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * DUE (SAM3X8E) LCD-specific defines
+ */
+
+uint8_t u8g_com_HAL_DUE_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
+uint8_t u8g_com_HAL_DUE_shared_hw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
+uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr);
+
+#define U8G_COM_HAL_SW_SPI_FN     u8g_com_HAL_DUE_sw_spi_fn
+#define U8G_COM_HAL_HW_SPI_FN     u8g_com_HAL_DUE_shared_hw_spi_fn
+#define U8G_COM_ST7920_HAL_SW_SPI u8g_com_HAL_DUE_ST7920_sw_spi_fn

Marlin/src/HAL/DUE/u8g/u8g_com_HAL_DUE_sw_spi_shared.cpp

@@ -81,7 +81,7 @@ Pio *SCK_pPio, *MOSI_pPio;
 uint32_t SCK_dwMask, MOSI_dwMask;
 
 void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
-  LOOP_L_N(i, 8) {
+  for (uint8_t i = 0; i < 8; ++i) {
     if (val & 0x80)
       MOSI_pPio->PIO_SODR = MOSI_dwMask;
     else
@@ -95,7 +95,7 @@ void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
 }
 
 void u8g_spiSend_sw_DUE_mode_3(uint8_t val) { // 3.5MHz
-  LOOP_L_N(i, 8) {
+  for (uint8_t i = 0; i < 8; ++i) {
     SCK_pPio->PIO_CODR = SCK_dwMask;
     DELAY_NS(50);
     if (val & 0x80)

Marlin/src/HAL/DUE/upload_extra_script.py

@@ -6,14 +6,14 @@
 #
 import pioutil
 if pioutil.is_pio_build():
-	import platform
-	current_OS = platform.system()
+    import platform
+    current_OS = platform.system()
 
-	if current_OS == 'Windows':
+    if current_OS == 'Windows':
 
-		Import("env")
+        Import("env")
 
-		# Use bossac.exe on Windows
-		env.Replace(
-			UPLOADCMD="bossac --info --unlock --write --verify --reset --erase -U false --boot $SOURCE"
-		)
+        # Use bossac.exe on Windows
+        env.Replace(
+            UPLOADCMD="bossac --info --unlock --write --verify --reset --erase -U false --boot $SOURCE"
+        )

Marlin/src/HAL/DUE/usb/README.md

@@ -0,0 +1,29 @@
+# USB Files Source Documentation
+
+## Source
+
+We sourced the USB files in Marlin from the Atmel ASF (Advanced Software Framework). The framework provides a variety of examples which were utilized in this project.
+
+Atmel doesn't provide these files in a source repository but they can be extracted from ASF, which can be downloaded from Atmel.
+
+[Advanced Software Framework](https://www.microchip.com/en-us/tools-resources/develop/libraries/advanced-software-framework)
+
+## Modifications
+
+The files are mostly unmodified except for minor cosmetic changes but some more significant changes were needed.
+
+The changes that prompted the addition of this README file are listed below. Other changes may have been made prior to this.
+
+1. Modified `uotghs_device_due.c` to resolve race conditions that could leave interrupts asserted when freezing the peripheral clock, resulting in hangs and watchdog resets due to the ensuing interrupt storm.
+
+## Version Information
+
+We don't know the exact version of ASF used as the source. However, the copyright information in the files indicates they are from 2015.
+
+## Upgrade Considerations
+
+We looked at the ASF 3.52.0 files released in 2022 but saw no immediate benefits to justify an upgrade. It's important to note that the files in Marlin don't follow the same folder structure as the files in ASF, which complicates the process of comparing and applying updated files.
+
+When these files are updated it's important to carefully compare them to Marlin's versions so any improvements in the Marlin sources are brought forward.
+
+It would be best to make Marlin's directory structure align with ASF or at least document the source of each file to ease future updates.

Marlin/src/HAL/DUE/usb/compiler.h

@@ -142,7 +142,6 @@
  */
 #define COMPILER_PACK_RESET()          COMPILER_PRAGMA(pack())
 
-
 /**
  * \brief Set aligned boundary.
  */
@@ -283,7 +282,6 @@ typedef double                  F64;  //!< 64-bit floating-point number.
 typedef uint32_t                iram_size_t;
 //! @}
 
-
 /*! \name Status Types
  */
 //! @{
@@ -291,7 +289,6 @@ typedef bool                Status_bool_t;  //!< Boolean status.
 typedef U8                  Status_t;       //!< 8-bit-coded status.
 //! @}
 
-
 /*! \name Aliasing Aggregate Types
  */
 //! @{
@@ -462,7 +459,6 @@ typedef struct
 #endif
 //! @}
 
-
 #ifndef __ASSEMBLY__ // not for assembling.
 
 //! \name Optimization Control
@@ -581,7 +577,6 @@ typedef struct
 
 //! @}
 
-
 /*! \name Zero-Bit Counting
  *
  * Under GCC, __builtin_clz and __builtin_ctz behave like macros when
@@ -692,7 +687,6 @@ typedef struct
 
 //! @}
 
-
 /*! \name Bit Reversing
  */
 //! @{
@@ -732,7 +726,6 @@ typedef struct
 
 //! @}
 
-
 /*! \name Alignment
  */
 //! @{
@@ -798,7 +791,6 @@ typedef struct
  */
 #define Long_call(addr)                   ((*(void (*)(void))(addr))())
 
-
 /*! \name MCU Endianism Handling
  * ARM is MCU little endianism.
  */
@@ -868,7 +860,6 @@ typedef struct
 #define  CPU_TO_BE32(x) swap32(x)
 //! @}
 
-
 /*! \name Endianism Conversion
  *
  * The same considerations as for clz and ctz apply here but GCC's
@@ -955,7 +946,6 @@ typedef struct
 
 //! @}
 
-
 /*! \name Target Abstraction
  */
 //! @{
@@ -997,7 +987,6 @@ typedef U8                  Byte;       //!< 8-bit unsigned integer.
 
 #endif  // #ifndef __ASSEMBLY__
 
-
 #ifdef __ICCARM__
 #define SHORTENUM           __packed
 #elif defined(__GNUC__)
@@ -1059,7 +1048,7 @@ static inline void convert_64_bit_to_byte_array(uint64_t value, uint8_t *data)
     while (val_index < 8)
     {
         data[val_index++] = value & 0xFF;
-        value = value >> 8;
+        value >>= 8;
     }
 }
 

Marlin/src/HAL/DUE/usb/conf_access.h

@@ -81,7 +81,6 @@
 #define LUN_0_NAME                              "\"SD/MMC Card\""
 //! @}
 
-
 /*! \name Actions Associated with Memory Accesses
  *
  * Write here the action to associate with each memory access.
@@ -112,5 +111,4 @@
 #define GLOBAL_WR_PROTECT    false   //!< Management of a global write protection.
 //! @}
 
-
 #endif // _CONF_ACCESS_H_

Marlin/src/HAL/DUE/usb/conf_clock.h

@@ -96,5 +96,4 @@
 // - UPLL frequency: 480MHz
 // - USB clock: 480 / 1 = 480MHz
 
-
 #endif /* CONF_CLOCK_H_INCLUDED */

Marlin/src/HAL/DUE/usb/conf_usb.h

@@ -88,7 +88,6 @@
 #endif
 //@}
 
-
 /**
  * USB Device Callbacks definitions (Optional)
  * @{
@@ -101,7 +100,7 @@
 #define  USB_DEVICE_SPECIFIC_REQUEST()  usb_task_other_requests()
 //@}
 
-#if ENABLED(SDSUPPORT)
+#if HAS_MEDIA
   /**
    * USB Device low level configuration
    * When only one interface is used, these configurations are defined by the class module.
@@ -150,7 +149,6 @@
 
 //@}
 
-
 /**
  * USB Interface Configuration
  * @{
@@ -185,7 +183,7 @@
 //! Enable id string of interface to add an extra USB string
 #define  UDI_CDC_IAD_STRING_ID            4
 
-#if ENABLED(SDSUPPORT)
+#if HAS_MEDIA
   /**
    * USB CDC low level configuration
    * In standalone these configurations are defined by the CDC module.
@@ -210,7 +208,6 @@
   //@}
   //@}
 
-
   /**
    * Configuration of MSC interface
    * @{
@@ -245,7 +242,6 @@
 
   //@}
 
-
   /**
    * Description of Composite Device
    * @{

Marlin/src/HAL/DUE/usb/ctrl_access.c

@@ -68,7 +68,6 @@
 #endif
 #include "ctrl_access.h"
 
-
 //_____ D E F I N I T I O N S ______________________________________________
 
 #ifdef FREERTOS_USED
@@ -112,7 +111,6 @@ static xSemaphoreHandle ctrl_access_semphr = NULL;
 
 #endif  // FREERTOS_USED
 
-
 #if MAX_LUN
 
 /*! \brief Initializes an entry of the LUN descriptor table.
@@ -242,17 +240,14 @@ static const struct
 
 #endif
 
-
 #if GLOBAL_WR_PROTECT == true
 bool g_wr_protect;
 #endif
 
-
 /*! \name Control Interface
  */
 //! @{
 
-
 #ifdef FREERTOS_USED
 
 bool ctrl_access_init(void)
@@ -270,7 +265,6 @@ bool ctrl_access_init(void)
   return true;
 }
 
-
 /*! \brief Locks accesses to LUNs.
  *
  * \return \c true if the access was successfully locked, else \c false.
@@ -288,7 +282,6 @@ static bool ctrl_access_lock(void)
 
 #endif  // FREERTOS_USED
 
-
 U8 get_nb_lun(void)
 {
 #if MEM_USB == ENABLE
@@ -309,13 +302,11 @@ U8 get_nb_lun(void)
 #endif
 }
 
-
 U8 get_cur_lun(void)
 {
   return LUN_ID_0;
 }
 
-
 Ctrl_status mem_test_unit_ready(U8 lun)
 {
   Ctrl_status status;
@@ -337,7 +328,6 @@ Ctrl_status mem_test_unit_ready(U8 lun)
   return status;
 }
 
-
 Ctrl_status mem_read_capacity(U8 lun, U32 *u32_nb_sector)
 {
   Ctrl_status status;
@@ -359,7 +349,6 @@ Ctrl_status mem_read_capacity(U8 lun, U32 *u32_nb_sector)
   return status;
 }
 
-
 U8 mem_sector_size(U8 lun)
 {
   U8 sector_size;
@@ -381,7 +370,6 @@ U8 mem_sector_size(U8 lun)
   return sector_size;
 }
 
-
 bool mem_unload(U8 lun, bool unload)
 {
   bool unloaded;
@@ -433,7 +421,6 @@ bool mem_wr_protect(U8 lun)
   return wr_protect;
 }
 
-
 bool mem_removal(U8 lun)
 {
   bool removal;
@@ -458,7 +445,6 @@ bool mem_removal(U8 lun)
   return removal;
 }
 
-
 const char *mem_name(U8 lun)
 {
 #if MAX_LUN==0
@@ -475,17 +461,14 @@ const char *mem_name(U8 lun)
 #endif
 }
 
-
 //! @}
 
-
 #if ACCESS_USB == true
 
 /*! \name MEM <-> USB Interface
  */
 //! @{
 
-
 Ctrl_status memory_2_usb(U8 lun, U32 addr, U16 nb_sector)
 {
   Ctrl_status status;
@@ -505,7 +488,6 @@ Ctrl_status memory_2_usb(U8 lun, U32 addr, U16 nb_sector)
   return status;
 }
 
-
 Ctrl_status usb_2_memory(U8 lun, U32 addr, U16 nb_sector)
 {
   Ctrl_status status;
@@ -525,19 +507,16 @@ Ctrl_status usb_2_memory(U8 lun, U32 addr, U16 nb_sector)
   return status;
 }
 
-
 //! @}
 
 #endif  // ACCESS_USB == true
 
-
 #if ACCESS_MEM_TO_RAM == true
 
 /*! \name MEM <-> RAM Interface
  */
 //! @{
 
-
 Ctrl_status memory_2_ram(U8 lun, U32 addr, void *ram)
 {
   Ctrl_status status;
@@ -564,7 +543,6 @@ Ctrl_status memory_2_ram(U8 lun, U32 addr, void *ram)
   return status;
 }
 
-
 Ctrl_status ram_2_memory(U8 lun, U32 addr, const void *ram)
 {
   Ctrl_status status;
@@ -591,19 +569,16 @@ Ctrl_status ram_2_memory(U8 lun, U32 addr, const void *ram)
   return status;
 }
 
-
 //! @}
 
 #endif  // ACCESS_MEM_TO_RAM == true
 
-
 #if ACCESS_STREAM == true
 
 /*! \name Streaming MEM <-> MEM Interface
  */
 //! @{
 
-
   #if ACCESS_MEM_TO_MEM == true
 
 #include "fat.h"
@@ -625,21 +600,18 @@ Ctrl_status stream_mem_to_mem(U8 src_lun, U32 src_addr, U8 dest_lun, U32 dest_ad
 
   #endif  // ACCESS_MEM_TO_MEM == true
 
-
 Ctrl_status stream_state(U8 id)
 {
   UNUSED(id);
   return CTRL_GOOD;
 }
 
-
 U16 stream_stop(U8 id)
 {
   UNUSED(id);
   return 0;
 }
 
-
 //! @}
 
 #endif // ACCESS_STREAM

Marlin/src/HAL/DUE/usb/ctrl_access.h

@@ -56,7 +56,6 @@
  * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
-
 #ifndef _CTRL_ACCESS_H_
 #define _CTRL_ACCESS_H_
 
@@ -89,7 +88,6 @@ typedef enum
   CTRL_BUSY       = FAIL + 2  //!< Memory not initialized or changed.
 } Ctrl_status;
 
-
 // FYI: Each Logical Unit Number (LUN) corresponds to a memory.
 
 // Check LUN defines.
@@ -136,7 +134,6 @@ typedef enum
 #define LUN_ID_USB      (MAX_LUN)           //!< First dynamic LUN (USB host mass storage).
 //! @}
 
-
 // Include LUN header files.
 #if LUN_0 == ENABLE
   #include LUN_0_INCLUDE
@@ -166,13 +163,11 @@ typedef enum
   #include LUN_USB_INCLUDE
 #endif
 
-
 // Check the configuration of write protection in conf_access.h.
 #ifndef GLOBAL_WR_PROTECT
   #error GLOBAL_WR_PROTECT must be defined as true or false in conf_access.h
 #endif
 
-
 #if GLOBAL_WR_PROTECT == true
 
 //! Write protect.
@@ -180,7 +175,6 @@ extern bool g_wr_protect;
 
 #endif
 
-
 /*! \name Control Interface
  */
 //! @{
@@ -279,7 +273,6 @@ extern const char *mem_name(U8 lun);
 
 //! @}
 
-
 #if ACCESS_USB == true
 
 /*! \name MEM <-> USB Interface
@@ -310,7 +303,6 @@ extern Ctrl_status usb_2_memory(U8 lun, U32 addr, U16 nb_sector);
 
 #endif  // ACCESS_USB == true
 
-
 #if ACCESS_MEM_TO_RAM == true
 
 /*! \name MEM <-> RAM Interface
@@ -341,7 +333,6 @@ extern Ctrl_status ram_2_memory(U8 lun, U32 addr, const void *ram);
 
 #endif  // ACCESS_MEM_TO_RAM == true
 
-
 #if ACCESS_STREAM == true
 
 /*! \name Streaming MEM <-> MEM Interface

Marlin/src/HAL/DUE/usb/genclk.h

@@ -74,17 +74,17 @@ extern "C" {
 //@{
 
 enum genclk_source {
-	GENCLK_PCK_SRC_SLCK_RC       = 0, //!< Internal 32kHz RC oscillator as PCK source clock
-	GENCLK_PCK_SRC_SLCK_XTAL     = 1, //!< External 32kHz crystal oscillator as PCK source clock
-	GENCLK_PCK_SRC_SLCK_BYPASS   = 2, //!< External 32kHz bypass oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_4M_RC  = 3, //!< Internal 4MHz RC oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_8M_RC  = 4, //!< Internal 8MHz RC oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_12M_RC = 5, //!< Internal 12MHz RC oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_XTAL   = 6, //!< External crystal oscillator as PCK source clock
-	GENCLK_PCK_SRC_MAINCK_BYPASS = 7, //!< External bypass oscillator as PCK source clock
-	GENCLK_PCK_SRC_PLLACK        = 8, //!< Use PLLACK as PCK source clock
-	GENCLK_PCK_SRC_PLLBCK        = 9, //!< Use PLLBCK as PCK source clock
-	GENCLK_PCK_SRC_MCK           = 10, //!< Use Master Clk as PCK source clock
+  GENCLK_PCK_SRC_SLCK_RC       = 0, //!< Internal 32kHz RC oscillator as PCK source clock
+  GENCLK_PCK_SRC_SLCK_XTAL     = 1, //!< External 32kHz crystal oscillator as PCK source clock
+  GENCLK_PCK_SRC_SLCK_BYPASS   = 2, //!< External 32kHz bypass oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_4M_RC  = 3, //!< Internal 4MHz RC oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_8M_RC  = 4, //!< Internal 8MHz RC oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_12M_RC = 5, //!< Internal 12MHz RC oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_XTAL   = 6, //!< External crystal oscillator as PCK source clock
+  GENCLK_PCK_SRC_MAINCK_BYPASS = 7, //!< External bypass oscillator as PCK source clock
+  GENCLK_PCK_SRC_PLLACK        = 8, //!< Use PLLACK as PCK source clock
+  GENCLK_PCK_SRC_PLLBCK        = 9, //!< Use PLLBCK as PCK source clock
+  GENCLK_PCK_SRC_MCK           = 10, //!< Use Master Clk as PCK source clock
 };
 
 //@}
@@ -93,176 +93,162 @@ enum genclk_source {
 //@{
 
 enum genclk_divider {
-	GENCLK_PCK_PRES_1  = PMC_PCK_PRES_CLK_1, //!< Set PCK clock prescaler to 1
-	GENCLK_PCK_PRES_2  = PMC_PCK_PRES_CLK_2, //!< Set PCK clock prescaler to 2
-	GENCLK_PCK_PRES_4  = PMC_PCK_PRES_CLK_4, //!< Set PCK clock prescaler to 4
-	GENCLK_PCK_PRES_8  = PMC_PCK_PRES_CLK_8, //!< Set PCK clock prescaler to 8
-	GENCLK_PCK_PRES_16 = PMC_PCK_PRES_CLK_16, //!< Set PCK clock prescaler to 16
-	GENCLK_PCK_PRES_32 = PMC_PCK_PRES_CLK_32, //!< Set PCK clock prescaler to 32
-	GENCLK_PCK_PRES_64 = PMC_PCK_PRES_CLK_64, //!< Set PCK clock prescaler to 64
+  GENCLK_PCK_PRES_1  = PMC_PCK_PRES_CLK_1, //!< Set PCK clock prescaler to 1
+  GENCLK_PCK_PRES_2  = PMC_PCK_PRES_CLK_2, //!< Set PCK clock prescaler to 2
+  GENCLK_PCK_PRES_4  = PMC_PCK_PRES_CLK_4, //!< Set PCK clock prescaler to 4
+  GENCLK_PCK_PRES_8  = PMC_PCK_PRES_CLK_8, //!< Set PCK clock prescaler to 8
+  GENCLK_PCK_PRES_16 = PMC_PCK_PRES_CLK_16, //!< Set PCK clock prescaler to 16
+  GENCLK_PCK_PRES_32 = PMC_PCK_PRES_CLK_32, //!< Set PCK clock prescaler to 32
+  GENCLK_PCK_PRES_64 = PMC_PCK_PRES_CLK_64, //!< Set PCK clock prescaler to 64
 };
 
 //@}
 
 struct genclk_config {
-	uint32_t ctrl;
+  uint32_t ctrl;
 };
 
-static inline void genclk_config_defaults(struct genclk_config *p_cfg,
-		uint32_t ul_id)
-{
-	ul_id = ul_id;
-	p_cfg->ctrl = 0;
+static inline void genclk_config_defaults(struct genclk_config *p_cfg, uint32_t ul_id) {
+  ul_id = ul_id;
+  p_cfg->ctrl = 0;
 }
 
-static inline void genclk_config_read(struct genclk_config *p_cfg,
-		uint32_t ul_id)
-{
-	p_cfg->ctrl = PMC->PMC_PCK[ul_id];
+static inline void genclk_config_read(struct genclk_config *p_cfg, uint32_t ul_id) {
+  p_cfg->ctrl = PMC->PMC_PCK[ul_id];
 }
 
-static inline void genclk_config_write(const struct genclk_config *p_cfg,
-		uint32_t ul_id)
-{
-	PMC->PMC_PCK[ul_id] = p_cfg->ctrl;
+static inline void genclk_config_write(const struct genclk_config *p_cfg, uint32_t ul_id) {
+  PMC->PMC_PCK[ul_id] = p_cfg->ctrl;
 }
 
 //! \name Programmable Clock Source and Prescaler configuration
 //@{
 
-static inline void genclk_config_set_source(struct genclk_config *p_cfg,
-		enum genclk_source e_src)
-{
-	p_cfg->ctrl &= (~PMC_PCK_CSS_Msk);
+static inline void genclk_config_set_source(struct genclk_config *p_cfg, enum genclk_source e_src) {
+  p_cfg->ctrl &= (~PMC_PCK_CSS_Msk);
 
-	switch (e_src) {
-	case GENCLK_PCK_SRC_SLCK_RC:
-	case GENCLK_PCK_SRC_SLCK_XTAL:
-	case GENCLK_PCK_SRC_SLCK_BYPASS:
-		p_cfg->ctrl |= (PMC_PCK_CSS_SLOW_CLK);
-		break;
+  switch (e_src) {
+  case GENCLK_PCK_SRC_SLCK_RC:
+  case GENCLK_PCK_SRC_SLCK_XTAL:
+  case GENCLK_PCK_SRC_SLCK_BYPASS:
+    p_cfg->ctrl |= (PMC_PCK_CSS_SLOW_CLK);
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_4M_RC:
-	case GENCLK_PCK_SRC_MAINCK_8M_RC:
-	case GENCLK_PCK_SRC_MAINCK_12M_RC:
-	case GENCLK_PCK_SRC_MAINCK_XTAL:
-	case GENCLK_PCK_SRC_MAINCK_BYPASS:
-		p_cfg->ctrl |= (PMC_PCK_CSS_MAIN_CLK);
-		break;
+  case GENCLK_PCK_SRC_MAINCK_4M_RC:
+  case GENCLK_PCK_SRC_MAINCK_8M_RC:
+  case GENCLK_PCK_SRC_MAINCK_12M_RC:
+  case GENCLK_PCK_SRC_MAINCK_XTAL:
+  case GENCLK_PCK_SRC_MAINCK_BYPASS:
+    p_cfg->ctrl |= (PMC_PCK_CSS_MAIN_CLK);
+    break;
 
-	case GENCLK_PCK_SRC_PLLACK:
-		p_cfg->ctrl |= (PMC_PCK_CSS_PLLA_CLK);
-		break;
+  case GENCLK_PCK_SRC_PLLACK:
+    p_cfg->ctrl |= (PMC_PCK_CSS_PLLA_CLK);
+    break;
 
-	case GENCLK_PCK_SRC_PLLBCK:
-		p_cfg->ctrl |= (PMC_PCK_CSS_UPLL_CLK);
-		break;
+  case GENCLK_PCK_SRC_PLLBCK:
+    p_cfg->ctrl |= (PMC_PCK_CSS_UPLL_CLK);
+    break;
 
-	case GENCLK_PCK_SRC_MCK:
-		p_cfg->ctrl |= (PMC_PCK_CSS_MCK);
-		break;
-	}
+  case GENCLK_PCK_SRC_MCK:
+    p_cfg->ctrl |= (PMC_PCK_CSS_MCK);
+    break;
+  }
 }
 
-static inline void genclk_config_set_divider(struct genclk_config *p_cfg,
-		uint32_t e_divider)
-{
-	p_cfg->ctrl &= ~PMC_PCK_PRES_Msk;
-	p_cfg->ctrl |= e_divider;
+static inline void genclk_config_set_divider(struct genclk_config *p_cfg, uint32_t e_divider) {
+  p_cfg->ctrl &= ~PMC_PCK_PRES_Msk;
+  p_cfg->ctrl |= e_divider;
 }
 
 //@}
 
-static inline void genclk_enable(const struct genclk_config *p_cfg,
-		uint32_t ul_id)
-{
-	PMC->PMC_PCK[ul_id] = p_cfg->ctrl;
-	pmc_enable_pck(ul_id);
+static inline void genclk_enable(const struct genclk_config *p_cfg, uint32_t ul_id) {
+  PMC->PMC_PCK[ul_id] = p_cfg->ctrl;
+  pmc_enable_pck(ul_id);
 }
 
-static inline void genclk_disable(uint32_t ul_id)
-{
-	pmc_disable_pck(ul_id);
+static inline void genclk_disable(uint32_t ul_id) {
+  pmc_disable_pck(ul_id);
 }
 
-static inline void genclk_enable_source(enum genclk_source e_src)
-{
-	switch (e_src) {
-	case GENCLK_PCK_SRC_SLCK_RC:
-		if (!osc_is_ready(OSC_SLCK_32K_RC)) {
-			osc_enable(OSC_SLCK_32K_RC);
-			osc_wait_ready(OSC_SLCK_32K_RC);
-		}
-		break;
+static inline void genclk_enable_source(enum genclk_source e_src) {
+  switch (e_src) {
+  case GENCLK_PCK_SRC_SLCK_RC:
+    if (!osc_is_ready(OSC_SLCK_32K_RC)) {
+      osc_enable(OSC_SLCK_32K_RC);
+      osc_wait_ready(OSC_SLCK_32K_RC);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_SLCK_XTAL:
-		if (!osc_is_ready(OSC_SLCK_32K_XTAL)) {
-			osc_enable(OSC_SLCK_32K_XTAL);
-			osc_wait_ready(OSC_SLCK_32K_XTAL);
-		}
-		break;
+  case GENCLK_PCK_SRC_SLCK_XTAL:
+    if (!osc_is_ready(OSC_SLCK_32K_XTAL)) {
+      osc_enable(OSC_SLCK_32K_XTAL);
+      osc_wait_ready(OSC_SLCK_32K_XTAL);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_SLCK_BYPASS:
-		if (!osc_is_ready(OSC_SLCK_32K_BYPASS)) {
-			osc_enable(OSC_SLCK_32K_BYPASS);
-			osc_wait_ready(OSC_SLCK_32K_BYPASS);
-		}
-		break;
+  case GENCLK_PCK_SRC_SLCK_BYPASS:
+    if (!osc_is_ready(OSC_SLCK_32K_BYPASS)) {
+      osc_enable(OSC_SLCK_32K_BYPASS);
+      osc_wait_ready(OSC_SLCK_32K_BYPASS);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_4M_RC:
-		if (!osc_is_ready(OSC_MAINCK_4M_RC)) {
-			osc_enable(OSC_MAINCK_4M_RC);
-			osc_wait_ready(OSC_MAINCK_4M_RC);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_4M_RC:
+    if (!osc_is_ready(OSC_MAINCK_4M_RC)) {
+      osc_enable(OSC_MAINCK_4M_RC);
+      osc_wait_ready(OSC_MAINCK_4M_RC);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_8M_RC:
-		if (!osc_is_ready(OSC_MAINCK_8M_RC)) {
-			osc_enable(OSC_MAINCK_8M_RC);
-			osc_wait_ready(OSC_MAINCK_8M_RC);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_8M_RC:
+    if (!osc_is_ready(OSC_MAINCK_8M_RC)) {
+      osc_enable(OSC_MAINCK_8M_RC);
+      osc_wait_ready(OSC_MAINCK_8M_RC);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_12M_RC:
-		if (!osc_is_ready(OSC_MAINCK_12M_RC)) {
-			osc_enable(OSC_MAINCK_12M_RC);
-			osc_wait_ready(OSC_MAINCK_12M_RC);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_12M_RC:
+    if (!osc_is_ready(OSC_MAINCK_12M_RC)) {
+      osc_enable(OSC_MAINCK_12M_RC);
+      osc_wait_ready(OSC_MAINCK_12M_RC);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_XTAL:
-		if (!osc_is_ready(OSC_MAINCK_XTAL)) {
-			osc_enable(OSC_MAINCK_XTAL);
-			osc_wait_ready(OSC_MAINCK_XTAL);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_XTAL:
+    if (!osc_is_ready(OSC_MAINCK_XTAL)) {
+      osc_enable(OSC_MAINCK_XTAL);
+      osc_wait_ready(OSC_MAINCK_XTAL);
+    }
+    break;
 
-	case GENCLK_PCK_SRC_MAINCK_BYPASS:
-		if (!osc_is_ready(OSC_MAINCK_BYPASS)) {
-			osc_enable(OSC_MAINCK_BYPASS);
-			osc_wait_ready(OSC_MAINCK_BYPASS);
-		}
-		break;
+  case GENCLK_PCK_SRC_MAINCK_BYPASS:
+    if (!osc_is_ready(OSC_MAINCK_BYPASS)) {
+      osc_enable(OSC_MAINCK_BYPASS);
+      osc_wait_ready(OSC_MAINCK_BYPASS);
+    }
+    break;
 
-#ifdef CONFIG_PLL0_SOURCE
-	case GENCLK_PCK_SRC_PLLACK:
-		pll_enable_config_defaults(0);
-		break;
-#endif
+  #ifdef CONFIG_PLL0_SOURCE
+    case GENCLK_PCK_SRC_PLLACK:
+      pll_enable_config_defaults(0);
+      break;
+  #endif
 
-#ifdef CONFIG_PLL1_SOURCE
-	case GENCLK_PCK_SRC_PLLBCK:
-		pll_enable_config_defaults(1);
-		break;
-#endif
+  #ifdef CONFIG_PLL1_SOURCE
+    case GENCLK_PCK_SRC_PLLBCK:
+      pll_enable_config_defaults(1);
+      break;
+  #endif
 
-	case GENCLK_PCK_SRC_MCK:
-		break;
+  case GENCLK_PCK_SRC_MCK:
+    break;
 
-	default:
-		Assert(false);
-		break;
-	}
+  default:
+    Assert(false);
+    break;
+  }
 }
 
 //! @}

Marlin/src/HAL/DUE/usb/mrepeat.h

@@ -57,7 +57,6 @@
 
 #include "preprocessor.h"
 
-
 //! Maximal number of repetitions supported by MREPEAT.
 #define MREPEAT_LIMIT   256
 

Marlin/src/HAL/DUE/usb/osc.h

@@ -62,28 +62,28 @@ extern "C" {
  * should be defined by the board code, otherwise default value are used.
  */
 #ifndef BOARD_FREQ_SLCK_XTAL
-#  warning The board slow clock xtal frequency has not been defined.
-#  define BOARD_FREQ_SLCK_XTAL      (32768UL)
+  #warning The board slow clock xtal frequency has not been defined.
+  #define BOARD_FREQ_SLCK_XTAL      (32768UL)
 #endif
 
 #ifndef BOARD_FREQ_SLCK_BYPASS
-#  warning The board slow clock bypass frequency has not been defined.
-#  define BOARD_FREQ_SLCK_BYPASS    (32768UL)
+  #warning The board slow clock bypass frequency has not been defined.
+  #define BOARD_FREQ_SLCK_BYPASS    (32768UL)
 #endif
 
 #ifndef BOARD_FREQ_MAINCK_XTAL
-#  warning The board main clock xtal frequency has not been defined.
-#  define BOARD_FREQ_MAINCK_XTAL    (12000000UL)
+  #warning The board main clock xtal frequency has not been defined.
+  #define BOARD_FREQ_MAINCK_XTAL    (12000000UL)
 #endif
 
 #ifndef BOARD_FREQ_MAINCK_BYPASS
-#  warning The board main clock bypass frequency has not been defined.
-#  define BOARD_FREQ_MAINCK_BYPASS  (12000000UL)
+  #warning The board main clock bypass frequency has not been defined.
+  #define BOARD_FREQ_MAINCK_BYPASS  (12000000UL)
 #endif
 
 #ifndef BOARD_OSC_STARTUP_US
-#  warning The board main clock xtal startup time has not been defined.
-#  define BOARD_OSC_STARTUP_US      (15625UL)
+  #warning The board main clock xtal startup time has not been defined.
+  #define BOARD_OSC_STARTUP_US      (15625UL)
 #endif
 
 /**
@@ -115,122 +115,116 @@ extern "C" {
 #define OSC_MAINCK_BYPASS_HZ        BOARD_FREQ_MAINCK_BYPASS        //!< External bypass oscillator.
 //@}
 
-static inline void osc_enable(uint32_t ul_id)
-{
-	switch (ul_id) {
-	case OSC_SLCK_32K_RC:
-		break;
+static inline void osc_enable(uint32_t ul_id) {
+  switch (ul_id) {
+  case OSC_SLCK_32K_RC:
+    break;
 
-	case OSC_SLCK_32K_XTAL:
-		pmc_switch_sclk_to_32kxtal(PMC_OSC_XTAL);
-		break;
+  case OSC_SLCK_32K_XTAL:
+    pmc_switch_sclk_to_32kxtal(PMC_OSC_XTAL);
+    break;
 
-	case OSC_SLCK_32K_BYPASS:
-		pmc_switch_sclk_to_32kxtal(PMC_OSC_BYPASS);
-		break;
+  case OSC_SLCK_32K_BYPASS:
+    pmc_switch_sclk_to_32kxtal(PMC_OSC_BYPASS);
+    break;
 
+  case OSC_MAINCK_4M_RC:
+    pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_4_MHz);
+    break;
 
-	case OSC_MAINCK_4M_RC:
-		pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_4_MHz);
-		break;
+  case OSC_MAINCK_8M_RC:
+    pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_8_MHz);
+    break;
 
-	case OSC_MAINCK_8M_RC:
-		pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_8_MHz);
-		break;
+  case OSC_MAINCK_12M_RC:
+    pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_12_MHz);
+    break;
 
-	case OSC_MAINCK_12M_RC:
-		pmc_switch_mainck_to_fastrc(CKGR_MOR_MOSCRCF_12_MHz);
-		break;
+  case OSC_MAINCK_XTAL:
+    pmc_switch_mainck_to_xtal(PMC_OSC_XTAL/*,
+      pmc_us_to_moscxtst(BOARD_OSC_STARTUP_US,
+        OSC_SLCK_32K_RC_HZ)*/);
+    break;
 
-
-	case OSC_MAINCK_XTAL:
-		pmc_switch_mainck_to_xtal(PMC_OSC_XTAL/*,
-			pmc_us_to_moscxtst(BOARD_OSC_STARTUP_US,
-				OSC_SLCK_32K_RC_HZ)*/);
-		break;
-
-	case OSC_MAINCK_BYPASS:
-		pmc_switch_mainck_to_xtal(PMC_OSC_BYPASS/*,
-			pmc_us_to_moscxtst(BOARD_OSC_STARTUP_US,
-				OSC_SLCK_32K_RC_HZ)*/);
-		break;
-	}
+  case OSC_MAINCK_BYPASS:
+    pmc_switch_mainck_to_xtal(PMC_OSC_BYPASS/*,
+      pmc_us_to_moscxtst(BOARD_OSC_STARTUP_US,
+        OSC_SLCK_32K_RC_HZ)*/);
+    break;
+  }
 }
 
-static inline void osc_disable(uint32_t ul_id)
-{
-	switch (ul_id) {
-	case OSC_SLCK_32K_RC:
-	case OSC_SLCK_32K_XTAL:
-	case OSC_SLCK_32K_BYPASS:
-		break;
+static inline void osc_disable(uint32_t ul_id) {
+  switch (ul_id) {
+  case OSC_SLCK_32K_RC:
+  case OSC_SLCK_32K_XTAL:
+  case OSC_SLCK_32K_BYPASS:
+    break;
 
-	case OSC_MAINCK_4M_RC:
-	case OSC_MAINCK_8M_RC:
-	case OSC_MAINCK_12M_RC:
-		pmc_osc_disable_fastrc();
-		break;
+  case OSC_MAINCK_4M_RC:
+  case OSC_MAINCK_8M_RC:
+  case OSC_MAINCK_12M_RC:
+    pmc_osc_disable_fastrc();
+    break;
 
-	case OSC_MAINCK_XTAL:
-		pmc_osc_disable_xtal(PMC_OSC_XTAL);
-		break;
+  case OSC_MAINCK_XTAL:
+    pmc_osc_disable_xtal(PMC_OSC_XTAL);
+    break;
 
-	case OSC_MAINCK_BYPASS:
-		pmc_osc_disable_xtal(PMC_OSC_BYPASS);
-		break;
-	}
+  case OSC_MAINCK_BYPASS:
+    pmc_osc_disable_xtal(PMC_OSC_BYPASS);
+    break;
+  }
 }
 
-static inline bool osc_is_ready(uint32_t ul_id)
-{
-	switch (ul_id) {
-	case OSC_SLCK_32K_RC:
-		return 1;
+static inline bool osc_is_ready(uint32_t ul_id) {
+  switch (ul_id) {
+  case OSC_SLCK_32K_RC:
+    return 1;
 
-	case OSC_SLCK_32K_XTAL:
-	case OSC_SLCK_32K_BYPASS:
-		return pmc_osc_is_ready_32kxtal();
+  case OSC_SLCK_32K_XTAL:
+  case OSC_SLCK_32K_BYPASS:
+    return pmc_osc_is_ready_32kxtal();
 
-	case OSC_MAINCK_4M_RC:
-	case OSC_MAINCK_8M_RC:
-	case OSC_MAINCK_12M_RC:
-	case OSC_MAINCK_XTAL:
-	case OSC_MAINCK_BYPASS:
-		return pmc_osc_is_ready_mainck();
-	}
+  case OSC_MAINCK_4M_RC:
+  case OSC_MAINCK_8M_RC:
+  case OSC_MAINCK_12M_RC:
+  case OSC_MAINCK_XTAL:
+  case OSC_MAINCK_BYPASS:
+    return pmc_osc_is_ready_mainck();
+  }
 
-	return 0;
+  return 0;
 }
 
-static inline uint32_t osc_get_rate(uint32_t ul_id)
-{
-	switch (ul_id) {
-	case OSC_SLCK_32K_RC:
-		return OSC_SLCK_32K_RC_HZ;
+static inline uint32_t osc_get_rate(uint32_t ul_id) {
+  switch (ul_id) {
+  case OSC_SLCK_32K_RC:
+    return OSC_SLCK_32K_RC_HZ;
 
-	case OSC_SLCK_32K_XTAL:
-		return BOARD_FREQ_SLCK_XTAL;
+  case OSC_SLCK_32K_XTAL:
+    return BOARD_FREQ_SLCK_XTAL;
 
-	case OSC_SLCK_32K_BYPASS:
-		return BOARD_FREQ_SLCK_BYPASS;
+  case OSC_SLCK_32K_BYPASS:
+    return BOARD_FREQ_SLCK_BYPASS;
 
-	case OSC_MAINCK_4M_RC:
-		return OSC_MAINCK_4M_RC_HZ;
+  case OSC_MAINCK_4M_RC:
+    return OSC_MAINCK_4M_RC_HZ;
 
-	case OSC_MAINCK_8M_RC:
-		return OSC_MAINCK_8M_RC_HZ;
+  case OSC_MAINCK_8M_RC:
+    return OSC_MAINCK_8M_RC_HZ;
 
-	case OSC_MAINCK_12M_RC:
-		return OSC_MAINCK_12M_RC_HZ;
+  case OSC_MAINCK_12M_RC:
+    return OSC_MAINCK_12M_RC_HZ;
 
-	case OSC_MAINCK_XTAL:
-		return BOARD_FREQ_MAINCK_XTAL;
+  case OSC_MAINCK_XTAL:
+    return BOARD_FREQ_MAINCK_XTAL;
 
-	case OSC_MAINCK_BYPASS:
-		return BOARD_FREQ_MAINCK_BYPASS;
-	}
+  case OSC_MAINCK_BYPASS:
+    return BOARD_FREQ_MAINCK_BYPASS;
+  }
 
-	return 0;
+  return 0;
 }
 
 /**
@@ -241,11 +235,10 @@ static inline uint32_t osc_get_rate(uint32_t ul_id)
  *
  * \param id A number identifying the oscillator to wait for.
  */
-static inline void osc_wait_ready(uint8_t id)
-{
-	while (!osc_is_ready(id)) {
-		/* Do nothing */
-	}
+static inline void osc_wait_ready(uint8_t id) {
+  while (!osc_is_ready(id)) {
+    /* Do nothing */
+  }
 }
 
 //! @}

Marlin/src/HAL/DUE/usb/pll.h

@@ -77,22 +77,22 @@ extern "C" {
 #define PLL_COUNT           0x3FU
 
 enum pll_source {
-	PLL_SRC_MAINCK_4M_RC        = OSC_MAINCK_4M_RC,     //!< Internal 4MHz RC oscillator.
-	PLL_SRC_MAINCK_8M_RC        = OSC_MAINCK_8M_RC,     //!< Internal 8MHz RC oscillator.
-	PLL_SRC_MAINCK_12M_RC       = OSC_MAINCK_12M_RC,    //!< Internal 12MHz RC oscillator.
-	PLL_SRC_MAINCK_XTAL         = OSC_MAINCK_XTAL,      //!< External crystal oscillator.
-	PLL_SRC_MAINCK_BYPASS       = OSC_MAINCK_BYPASS,    //!< External bypass oscillator.
-	PLL_NR_SOURCES,                                     //!< Number of PLL sources.
+  PLL_SRC_MAINCK_4M_RC        = OSC_MAINCK_4M_RC,     //!< Internal 4MHz RC oscillator.
+  PLL_SRC_MAINCK_8M_RC        = OSC_MAINCK_8M_RC,     //!< Internal 8MHz RC oscillator.
+  PLL_SRC_MAINCK_12M_RC       = OSC_MAINCK_12M_RC,    //!< Internal 12MHz RC oscillator.
+  PLL_SRC_MAINCK_XTAL         = OSC_MAINCK_XTAL,      //!< External crystal oscillator.
+  PLL_SRC_MAINCK_BYPASS       = OSC_MAINCK_BYPASS,    //!< External bypass oscillator.
+  PLL_NR_SOURCES,                                     //!< Number of PLL sources.
 };
 
 struct pll_config {
-	uint32_t ctrl;
+  uint32_t ctrl;
 };
 
 #define pll_get_default_rate(pll_id)                                       \
-	((osc_get_rate(CONFIG_PLL##pll_id##_SOURCE)                            \
-			* CONFIG_PLL##pll_id##_MUL)                                    \
-			/ CONFIG_PLL##pll_id##_DIV)
+  ((osc_get_rate(CONFIG_PLL##pll_id##_SOURCE)                            \
+      * CONFIG_PLL##pll_id##_MUL)                                    \
+      / CONFIG_PLL##pll_id##_DIV)
 
 /* Force UTMI PLL parameters (Hardware defined) */
 #ifdef CONFIG_PLL1_SOURCE
@@ -113,145 +113,130 @@ struct pll_config {
  * is hidden in this implementation. Use mul as mul effective value.
  */
 static inline void pll_config_init(struct pll_config *p_cfg,
-		enum pll_source e_src, uint32_t ul_div, uint32_t ul_mul)
-{
-	uint32_t vco_hz;
+    enum pll_source e_src, uint32_t ul_div, uint32_t ul_mul) {
+  uint32_t vco_hz;
 
-	Assert(e_src < PLL_NR_SOURCES);
+  Assert(e_src < PLL_NR_SOURCES);
 
-	if (ul_div == 0 && ul_mul == 0) { /* Must only be true for UTMI PLL */
-		p_cfg->ctrl = CKGR_UCKR_UPLLCOUNT(PLL_COUNT);
-	} else { /* PLLA */
-		/* Calculate internal VCO frequency */
-		vco_hz = osc_get_rate(e_src) / ul_div;
-		Assert(vco_hz >= PLL_INPUT_MIN_HZ);
-		Assert(vco_hz <= PLL_INPUT_MAX_HZ);
+  if (ul_div == 0 && ul_mul == 0) { /* Must only be true for UTMI PLL */
+    p_cfg->ctrl = CKGR_UCKR_UPLLCOUNT(PLL_COUNT);
+  }
+  else { /* PLLA */
+    /* Calculate internal VCO frequency */
+    vco_hz = osc_get_rate(e_src) / ul_div;
+    Assert(vco_hz >= PLL_INPUT_MIN_HZ);
+    Assert(vco_hz <= PLL_INPUT_MAX_HZ);
 
-		vco_hz *= ul_mul;
-		Assert(vco_hz >= PLL_OUTPUT_MIN_HZ);
-		Assert(vco_hz <= PLL_OUTPUT_MAX_HZ);
+    vco_hz *= ul_mul;
+    Assert(vco_hz >= PLL_OUTPUT_MIN_HZ);
+    Assert(vco_hz <= PLL_OUTPUT_MAX_HZ);
 
-		/* PMC hardware will automatically make it mul+1 */
-		p_cfg->ctrl = CKGR_PLLAR_MULA(ul_mul - 1) | CKGR_PLLAR_DIVA(ul_div) | CKGR_PLLAR_PLLACOUNT(PLL_COUNT);
-	}
+    /* PMC hardware will automatically make it mul+1 */
+    p_cfg->ctrl = CKGR_PLLAR_MULA(ul_mul - 1) | CKGR_PLLAR_DIVA(ul_div) | CKGR_PLLAR_PLLACOUNT(PLL_COUNT);
+  }
 }
 
-#define pll_config_defaults(cfg, pll_id)                                   \
-	pll_config_init(cfg,                                                   \
-			CONFIG_PLL##pll_id##_SOURCE,                                   \
-			CONFIG_PLL##pll_id##_DIV,                                      \
-			CONFIG_PLL##pll_id##_MUL)
+#define pll_config_defaults(cfg, pll_id)  \
+  pll_config_init(cfg,                    \
+      CONFIG_PLL##pll_id##_SOURCE,        \
+      CONFIG_PLL##pll_id##_DIV,           \
+      CONFIG_PLL##pll_id##_MUL)
 
-static inline void pll_config_read(struct pll_config *p_cfg, uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
-
-	if (ul_pll_id == PLLA_ID) {
-		p_cfg->ctrl = PMC->CKGR_PLLAR;
-	} else {
-		p_cfg->ctrl = PMC->CKGR_UCKR;
-	}
+static inline void pll_config_read(struct pll_config *p_cfg, uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
+  p_cfg->ctrl = ul_pll_id == PLLA_ID ? PMC->CKGR_PLLAR : PMC->CKGR_UCKR;
 }
 
-static inline void pll_config_write(const struct pll_config *p_cfg, uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
+static inline void pll_config_write(const struct pll_config *p_cfg, uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
 
-	if (ul_pll_id == PLLA_ID) {
-		pmc_disable_pllack(); // Always stop PLL first!
-		PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | p_cfg->ctrl;
-	} else {
-		PMC->CKGR_UCKR = p_cfg->ctrl;
-	}
+  if (ul_pll_id == PLLA_ID) {
+    pmc_disable_pllack(); // Always stop PLL first!
+    PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | p_cfg->ctrl;
+  }
+  else
+    PMC->CKGR_UCKR = p_cfg->ctrl;
 }
 
-static inline void pll_enable(const struct pll_config *p_cfg, uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
+static inline void pll_enable(const struct pll_config *p_cfg, uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
 
-	if (ul_pll_id == PLLA_ID) {
-		pmc_disable_pllack(); // Always stop PLL first!
-		PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | p_cfg->ctrl;
-	} else {
-		PMC->CKGR_UCKR = p_cfg->ctrl | CKGR_UCKR_UPLLEN;
-	}
+  if (ul_pll_id == PLLA_ID) {
+    pmc_disable_pllack(); // Always stop PLL first!
+    PMC->CKGR_PLLAR = CKGR_PLLAR_ONE | p_cfg->ctrl;
+  }
+  else
+    PMC->CKGR_UCKR = p_cfg->ctrl | CKGR_UCKR_UPLLEN;
 }
 
 /**
  * \note This will only disable the selected PLL, not the underlying oscillator (mainck).
  */
-static inline void pll_disable(uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
+static inline void pll_disable(uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
 
-	if (ul_pll_id == PLLA_ID) {
-		pmc_disable_pllack();
-	} else {
-		PMC->CKGR_UCKR &= ~CKGR_UCKR_UPLLEN;
-	}
+  if (ul_pll_id == PLLA_ID)
+    pmc_disable_pllack();
+  else
+    PMC->CKGR_UCKR &= ~CKGR_UCKR_UPLLEN;
 }
 
-static inline uint32_t pll_is_locked(uint32_t ul_pll_id)
-{
-	Assert(ul_pll_id < NR_PLLS);
+static inline uint32_t pll_is_locked(uint32_t ul_pll_id) {
+  Assert(ul_pll_id < NR_PLLS);
 
-	if (ul_pll_id == PLLA_ID) {
-		return pmc_is_locked_pllack();
-	} else {
-		return pmc_is_locked_upll();
-	}
+  if (ul_pll_id == PLLA_ID)
+    return pmc_is_locked_pllack();
+  else
+    return pmc_is_locked_upll();
 }
 
-static inline void pll_enable_source(enum pll_source e_src)
-{
-	switch (e_src) {
-	case PLL_SRC_MAINCK_4M_RC:
-	case PLL_SRC_MAINCK_8M_RC:
-	case PLL_SRC_MAINCK_12M_RC:
-	case PLL_SRC_MAINCK_XTAL:
-	case PLL_SRC_MAINCK_BYPASS:
-		osc_enable(e_src);
-		osc_wait_ready(e_src);
-		break;
+static inline void pll_enable_source(enum pll_source e_src) {
+  switch (e_src) {
+  case PLL_SRC_MAINCK_4M_RC:
+  case PLL_SRC_MAINCK_8M_RC:
+  case PLL_SRC_MAINCK_12M_RC:
+  case PLL_SRC_MAINCK_XTAL:
+  case PLL_SRC_MAINCK_BYPASS:
+    osc_enable(e_src);
+    osc_wait_ready(e_src);
+    break;
 
-	default:
-		Assert(false);
-		break;
-	}
+  default:
+    Assert(false);
+    break;
+  }
 }
 
-static inline void pll_enable_config_defaults(unsigned int ul_pll_id)
-{
-	struct pll_config pllcfg;
+static inline void pll_enable_config_defaults(unsigned int ul_pll_id) {
+  struct pll_config pllcfg;
 
-	if (pll_is_locked(ul_pll_id)) {
-		return; // Pll already running
-	}
-	switch (ul_pll_id) {
-#ifdef CONFIG_PLL0_SOURCE
-	case 0:
-		pll_enable_source(CONFIG_PLL0_SOURCE);
-		pll_config_init(&pllcfg,
-				CONFIG_PLL0_SOURCE,
-				CONFIG_PLL0_DIV,
-				CONFIG_PLL0_MUL);
-		break;
-#endif
-#ifdef CONFIG_PLL1_SOURCE
-	case 1:
-		pll_enable_source(CONFIG_PLL1_SOURCE);
-		pll_config_init(&pllcfg,
-				CONFIG_PLL1_SOURCE,
-				CONFIG_PLL1_DIV,
-				CONFIG_PLL1_MUL);
-		break;
-#endif
-	default:
-		Assert(false);
-		break;
-	}
-	pll_enable(&pllcfg, ul_pll_id);
-	while (!pll_is_locked(ul_pll_id));
+  if (pll_is_locked(ul_pll_id)) return; // Pll already running
+
+  switch (ul_pll_id) {
+    #ifdef CONFIG_PLL0_SOURCE
+      case 0:
+        pll_enable_source(CONFIG_PLL0_SOURCE);
+        pll_config_init(&pllcfg,
+            CONFIG_PLL0_SOURCE,
+            CONFIG_PLL0_DIV,
+            CONFIG_PLL0_MUL);
+        break;
+    #endif
+    #ifdef CONFIG_PLL1_SOURCE
+      case 1:
+        pll_enable_source(CONFIG_PLL1_SOURCE);
+        pll_config_init(&pllcfg,
+            CONFIG_PLL1_SOURCE,
+            CONFIG_PLL1_DIV,
+            CONFIG_PLL1_MUL);
+        break;
+    #endif
+    default:
+      Assert(false);
+      break;
+  }
+  pll_enable(&pllcfg, ul_pll_id);
+  while (!pll_is_locked(ul_pll_id));
 }
 
 /**
@@ -264,15 +249,12 @@ static inline void pll_enable_config_defaults(unsigned int ul_pll_id)
  * \retval STATUS_OK The PLL is now locked.
  * \retval ERR_TIMEOUT Timed out waiting for PLL to become locked.
  */
-static inline int pll_wait_for_lock(unsigned int pll_id)
-{
-	Assert(pll_id < NR_PLLS);
+static inline int pll_wait_for_lock(unsigned int pll_id) {
+  Assert(pll_id < NR_PLLS);
 
-	while (!pll_is_locked(pll_id)) {
-		/* Do nothing */
-	}
+  while (!pll_is_locked(pll_id)) { /* Do nothing */ }
 
-	return 0;
+  return 0;
 }
 
 //! @}

Marlin/src/HAL/DUE/usb/preprocessor.h

@@ -51,5 +51,4 @@
 #include "stringz.h"
 #include "mrepeat.h"
 
-
 #endif  // _PREPROCESSOR_H_