Merge branch 'LulzbotTestBase' into LulzbotUniversalTools

TODO : Sanity checks, Finish DAC mode, Test on Rambo

.circleci/config.yml

@@ -1,274 +0,0 @@
-# Python CircleCI 2.0 configuration file
-#
-# Check https://circleci.com/docs/2.0/language-python/ for more details
-#
-version: 2
-jobs:
-  build:
-    docker:
-      # specify the version you desire here
-      # use `-browsers` prefix for selenium tests, e.g. `3.6.1-browsers`
-      - image: circleci/python:2.7.13
-
-      # Specify service dependencies here if necessary
-      # CircleCI maintains a library of pre-built images
-      # documented at https://circleci.com/docs/2.0/circleci-images/
-      # - image: circleci/postgres:9.4
-    environment:
-      TEST_PLATFORM: "-e megaatmega2560"
-
-    working_directory: ~/Marlin
-
-    steps:
-      - checkout
-
-      - restore_cache:
-          paths:
-          - ~/.platformio
-          - ~/Marlin/.piolibdeps
-          keys:
-          - v1-dependencies-{{ checksum "~/Marlin/platformio.ini" }}
-          # fallback to using the latest cache if no exact match is found
-          - v1-dependencies-
-
-      - run:
-          name: install dependencies
-          command: |
-            sudo pip install -U platformio
-
-      # run tests!
-      - run:
-          name: run tests
-          command: |
-            #
-            #
-            # Fetch the tag information for the current branch
-            ls -la
-            git fetch origin --tags
-            #
-            # Publish the buildroot script folder
-            chmod +x buildroot/bin/*
-            export PATH=`pwd`/buildroot/bin/:${PATH}
-
-            # Generate custom version include
-            generate_version ./Marlin/src/inc
-            cat ./Marlin/src/inc/_Version.h
-            #
-            # Back up pins_RAMPS.h
-            #
-            backup_ramps
-
-            env_backup
-
-            #################################
-            # Build all sample configurations
-            #################################
-
-            echo testing megaatmega2560 targets...
-            export TEST_PLATFORM="-e megaatmega2560"
-            echo use_example_configs adafruit/ST7565
-            use_example_configs adafruit/ST7565
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs BQ/Hephestos
-            use_example_configs BQ/Hephestos
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs BQ/Hephestos_2
-            use_example_configs BQ/Hephestos_2
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs BQ/WITBOX
-            use_example_configs BQ/WITBOX
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs AliExpress/CL-260
-            use_example_configs AliExpress/CL-260
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            #echo use_example_configs Cartesio
-            #use_example_configs Cartesio
-            #build_marlin_pio ./ ${TEST_PLATFORM}
-            #restore_configs
-            echo use_example_configs delta/FLSUN/auto_calibrate
-            use_example_configs delta/FLSUN/auto_calibrate
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs delta/FLSUN/kossel_mini
-            use_example_configs delta/FLSUN/kossel_mini
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs delta/generic
-            use_example_configs delta/generic
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs delta/kossel_mini
-            use_example_configs delta/kossel_mini
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs delta/kossel_xl
-            use_example_configs delta/kossel_xl
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Felix
-            use_example_configs Felix
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Felix/DUAL
-            use_example_configs Felix/DUAL
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs FolgerTech/i3-2020
-            use_example_configs FolgerTech/i3-2020
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs gCreate/gMax1.5+
-            use_example_configs gCreate/gMax1.5+
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Geeetech/GT2560
-            use_example_configs Geeetech/GT2560
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            #echo use_example_configs Geeetech/I3_Pro_X-GT2560
-            #use_example_configs Geeetech/I3_Pro_X-GT2560
-            #build_marlin_pio ./ ${TEST_PLATFORM}
-            #restore_configs
-            echo use_example_configs Infitary/i3-M508
-            use_example_configs Infitary/i3-M508
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            use_example_configs Malyan/M200
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Micromake/C1/basic
-            use_example_configs Micromake/C1/basic
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Micromake/C1/enhanced
-            use_example_configs Micromake/C1/enhanced
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs RepRapWorld/Megatronics
-            use_example_configs RepRapWorld/Megatronics
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs RigidBot
-            use_example_configs RigidBot
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs SCARA
-            use_example_configs SCARA
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Velleman/K8200
-            use_example_configs Velleman/K8200
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Velleman/K8400/Dual-head
-            use_example_configs Velleman/K8400/Dual-head
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Velleman/K8400
-            use_example_configs Velleman/K8400
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Wanhao/Duplicator6
-            use_example_configs Wanhao/Duplicator6
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            # Requires manual load of https://github.com/stawel/SlowSoftI2CMaster
-            #use_example_configs wt150
-            #build_marlin_pio ./ ${TEST_PLATFORM}
-            #restore_configs
-            echo testing melzi targets...
-            export TEST_PLATFORM="-e melzi"
-            echo use_example_configs Anet/A6
-            use_example_configs Anet/A6
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Anet/A8
-            use_example_configs Anet/A8
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Creality/CR-10
-            use_example_configs Creality/CR-10
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Malyan/M150
-            use_example_configs Malyan/M150
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs Sanguinololu
-            use_example_configs Sanguinololu
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs TinyBoy2
-            use_example_configs TinyBoy2
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-
-            echo testing rambo targets...
-            export TEST_PLATFORM="-e rambo"
-            echo use_example_configs AlephObjects/TAZ4
-            use_example_configs AlephObjects/TAZ4
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-
-            echo testing at90usb1286_* targets...
-            export TEST_PLATFORM="-e at90usb1286_dfu"
-            #echo se_example_configs delta/kossel_pro
-            #use_example_configs delta/kossel_pro
-            #build_marlin_pio ./ ${TEST_PLATFORM}
-            #restore_configs
-            echo use_example_configs makibox
-            use_example_configs makibox
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-
-            echo testing sanguino_atmega644p targets...
-            export TEST_PLATFORM="-e sanguino_atmega644p"
-            echo use_example_configs tvrrug/Round2
-            use_example_configs tvrrug/Round2
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-
-            echo testing LPC1768 targets...
-            export TEST_PLATFORM="-e LPC1768"
-            echo use_example_configs Mks/Sbase
-            use_example_configs Mks/Sbase
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo testing STM32F1 targets...
-            export TEST_PLATFORM="-e STM32F1"
-            restore_configs
-            echo use_example_configs STM32F10
-            use_example_configs STM32F10
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-            echo use_example_configs stm32f103ret6
-            use_example_configs stm32f103ret6
-            build_marlin_pio ./ ${TEST_PLATFORM}
-            restore_configs
-
-            echo testing DUE targets...
-            export TEST_PLATFORM="-e DUE"
-            #echo use_example_configs UltiMachine/Archim2
-            #use_example_configs UltiMachine/Archim2
-            #build_marlin_pio ./ ${TEST_PLATFORM}
-            #restore_configs
-
-            #
-            # Remove temp files from dependencies tree prior to caching
-            rm -rf ~/Marlin/.piolibdeps/_tmp_*
-
-            #
-            # Restore the environment
-            #
-            env_restore
-
-      - save_cache:
-          paths:
-          - ~/.platformio
-          - ~/Marlin/.piolibdeps
-          key: v1-dependencies-{{ checksum "~/Marlin/platformio.ini" }}

.editorconfig

@@ -0,0 +1,19 @@
+# editorconfig.org
+root = true
+
+[{*.patch,syntax_test_*}]
+trim_trailing_whitespace = false
+
+[{*.c,*.cpp,*.h}]
+charset = utf-8
+
+[{*.c,*.cpp,*.h,Makefile}]
+trim_trailing_whitespace = true
+insert_final_newline = true
+end_of_line = lf
+indent_style = space
+indent_size = 2
+
+[{*.py,*.conf,*.sublime-project}]
+indent_style = tab
+indent_size = 4

.github/FUNDING.yml

@@ -0,0 +1,3 @@
+github: [thinkyhead]
+patreon: thinkyhead
+custom: ["https://www.thinkyhead.com/donate-to-marlin"]

.github/contributing.md

@@ -34,16 +34,15 @@ This project and everyone participating in it is governed by the [Marlin Code of
 
 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](http://forums.reprap.org/list.php?415)
+* [Marlin RepRap forum](https://reprap.org/forum/list.php?415)
 * [MarlinFirmware on Facebook](https://www.facebook.com/groups/1049718498464482/)
 
-If chat is more your speed, you can join the MarlinFirmware Slack team:
+If chat is more your speed, you can join the MarlinFirmware Discord server:
 
-* Join the Marlin Slack Team
-  * To obtain group access, please [send a request](http://www.thinkyhead.com/contact/9) to @thinkyhead.
-  * Even though Slack is a chat service, sometimes it takes several hours for community members to respond — please be patient!
-  * Use the `#general` channel for general questions or discussion about Marlin.
-  * Other channels exist for certain topics. Check the channel list.
+* Use the link https://discord.gg/n5NJ59y to join up as a General User.
+* Even though our Discord is pretty active, it may take a while for community members to respond — please be patient!
+* Use the `#general` channel for general questions or discussion about Marlin.
+* Other channels exist for certain topics or are limited to Patrons. Check the channel list.
 
 ## How Can I Contribute?
 
@@ -93,7 +92,7 @@ Before creating a suggestion, please check [this list](#before-submitting-a-sugg
 
 #### Before Submitting a Feature Request
 
-* **Check the [Marlin website](http://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](http://marlinfw.org/docs/configuration/configuration.html).
+* **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.
 
 #### How Do I Submit A (Good) Feature Request?
@@ -117,12 +116,12 @@ 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](http://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-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.
 
 * Fill in [the required template](pull_request_template.md).
 * Don't include issue numbers in the PR title.
 * Include pictures, diagrams, and links to videos in your Pull Request to demonstrate your changes, if needed.
-* Follow the [Coding Standards](http://marlinfw.org/docs/development/coding_standards.html) posted on our website.
+* Follow the [Coding Standards](https://marlinfw.org/docs/development/coding_standards.html) posted on our website.
 * Document new code with clear and concise comments.
 * End all files with a newline.
 
@@ -137,7 +136,7 @@ Pull Requests should always be targeted to working branches (e.g., `bugfix-1.1.x
 
 ### C++ Coding Standards
 
-* Please read and follow the [Coding Standards](http://marlinfw.org/docs/development/coding_standards.html) posted on our website. Failure to follow these guidelines will delay evaluation and acceptance of Pull Requests.
+* Please read and follow the [Coding Standards](https://marlinfw.org/docs/development/coding_standards.html) posted on our website. Failure to follow these guidelines will delay evaluation and acceptance of Pull Requests.
 
 ### Documentation
 

.github/issue_template.md

@@ -2,9 +2,13 @@
 
 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 please use the Marlin Firmware forum at http://forums.reprap.org/list.php?415 or the Marlin Facebook Group https://www.facebook.com/groups/1049718498464482/.
+Do you want to ask a question? Are you looking for support? Please don't post here. Instead use one of the following options:
 
-Before filing an issue be sure to test the 1.1 and/or 2.0 "bugfix" branches to see whether the issue is already addressed.
+- 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.
 
 -->
 

.github/lock.yml

@@ -0,0 +1,40 @@
+#
+# 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

@@ -14,6 +14,10 @@ We must be able to understand your proposed change from this description. If we
 
 <!-- What does this fix or improve? -->
 
+### Configurations
+
+<!-- Attach any Configuration.h, Configuration_adv.h, or platformio.ini files needed to compile/test your Pull Request. -->
+
 ### Related Issues
 
 <!-- Whether this fixes a bug or fulfills a feature request, please list any related Issues here. -->

.github/workflows/test-builds.yml

@@ -0,0 +1,121 @@
+#
+# test-builds.yml
+# Do test builds to catch compile errors
+#
+
+name: CI
+
+on:
+  pull_request:
+    branches:
+    - bugfix-2.0.x
+    paths-ignore:
+    - config/**
+    - data/**
+    - docs/**
+    - '**/*.md'
+  push:
+    branches:
+    - bugfix-2.0.x
+    paths-ignore:
+    - config/**
+    - data/**
+    - docs/**
+    - '**/*.md'
+
+jobs:
+  test_builds:
+    name: Run All Tests
+    if: github.repository == 'MarlinFirmware/Marlin'
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        test-platform:
+        # Base Environments
+
+        - DUE
+        - esp32
+        - linux_native
+        - mega2560
+        - teensy31
+        - teensy35
+        - SAMD51_grandcentral_m4
+
+        # Extended AVR Environments
+
+        - FYSETC_F6_13
+        - mega1280
+        - rambo
+        - sanguino1284p
+        - sanguino644p
+
+        # Extended STM32 Environments
+
+        - STM32F103RC_btt
+        - STM32F103RC_btt_USB
+        - STM32F103RE_btt
+        - STM32F103RE_btt_USB
+        - STM32F103RC_fysetc
+        - STM32F103RC_meeb
+        - jgaurora_a5s_a1
+        - STM32F103VE_longer
+        - STM32F407VE_black
+        - STM32F401VE_STEVAL
+        - BIGTREE_BTT002
+        - BIGTREE_SKR_PRO
+        - BIGTREE_GTR_V1_0
+        - mks_robin
+        - mks_robin_stm32
+        - ARMED
+        - FYSETC_S6
+        - STM32F070RB_malyan
+        - malyan_M300
+        - mks_robin_lite
+        - FLYF407ZG
+        - rumba32
+        - mks_robin_pro
+        - STM32F103RET6_creality
+        - LERDGEX
+        - mks_robin_nano35
+
+        # Put lengthy tests last
+
+        - LPC1768
+        - LPC1769
+
+        # STM32 with non-STM framework. both broken for now. they should use HAL_STM32 which is working.
+
+        #- STM32F4
+        #- STM32F7
+
+        # Non-working environment tests
+        #- at90usb1286_cdc
+        #- at90usb1286_dfu
+        #- STM32F103CB_malyan
+        #- mks_robin_mini
+
+    steps:
+
+    - name: Select Python 3.7
+      uses: actions/setup-python@v1
+      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
+
+    - name: Install PlatformIO
+      run: |
+        pip install -U https://github.com/platformio/platformio-core/archive/develop.zip
+        platformio update
+
+    - name: Check out the PR
+      uses: actions/checkout@v2
+
+    - name: Run ${{ matrix.test-platform }} Tests
+      run: |
+        # Inline tests script
+        chmod +x buildroot/bin/*
+        chmod +x buildroot/tests/*
+        export PATH=./buildroot/bin/:./buildroot/tests/:${PATH}
+        run_tests . ${{ matrix.test-platform }}

.gitignore

@@ -1,6 +1,6 @@
 #
 # Marlin 3D Printer Firmware
-# Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+# Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
 #
 # Based on Sprinter and grbl.
 # Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
 # 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 <http://www.gnu.org/licenses/>.
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #
 
 # Our automatic versioning scheme generates the following file
@@ -146,6 +146,9 @@ Marlin/*/*/readme.txt
 Marlin/*/*/*/readme.txt
 Marlin/*/*/*/*/readme.txt
 
+# Secure Credentials
+Configuration_Secure.h
+
 #Visual Studio
 *.sln
 *.vcxproj

.travis.yml

@@ -1,49 +0,0 @@
-dist: bionic
-sudo: false
-
-language: python
-python:
-  - "3.7"
-
-notifications:
-  email: false
-
-env:
-  - TEST_PLATFORM="megaatmega2560"
-  - TEST_PLATFORM="DUE"
-  - TEST_PLATFORM="LPC1768"
-  - TEST_PLATFORM="LPC1769"
-  - TEST_PLATFORM="STM32F1"
-  - TEST_PLATFORM="teensy35"
-  - TEST_PLATFORM="linux_native"
-  - TEST_PLATFORM="esp32"
-  - TEST_PLATFORM="alfawise_U20"
-  - TEST_PLATFORM="black_stm32f407ve"
-
-before_install:
-  #
-  # Fetch the tag information for the current branch
-  - git fetch origin --tags
-  #
-  # Publish the buildroot script folder
-  - chmod +x ${TRAVIS_BUILD_DIR}/buildroot/bin/*
-  - chmod +x ${TRAVIS_BUILD_DIR}/buildroot/share/tests/*
-  - export PATH=${TRAVIS_BUILD_DIR}/buildroot/bin/:${TRAVIS_BUILD_DIR}/buildroot/share/tests/:${PATH}
-
-install:
-  #- pip install -U platformio
-  - pip install -U https://github.com/platformio/platformio-core/archive/master.zip
-
-before_script:
-  # Update PlatformIO packages
-  - platformio update
-  #
-  # Change current working directory to the build dir
-  - cd ${TRAVIS_BUILD_DIR}
-  #
-  # Generate custom version include
-  - generate_version ${TRAVIS_BUILD_DIR}/Marlin/src/inc
-  - cat ${TRAVIS_BUILD_DIR}/Marlin/src/inc/_Version.h
-  #
-script:
-  - run_tests ${TRAVIS_BUILD_DIR} ${TEST_PLATFORM}

LICENSE

@@ -3,7 +3,7 @@
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
- Copyright (c) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (c) 2007 Free Software Foundation, Inc. <https://www.fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -647,7 +647,7 @@ the "copyright" line and a pointer to where the full notice is found.
     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 <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
@@ -666,12 +666,11 @@ might be different; for a GUI interface, you would use an "about box".
   You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
-<http://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.
 
   The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
-<http://www.gnu.org/philosophy/why-not-lgpl.html>.
-
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

Marlin/Makefile

@@ -14,7 +14,7 @@
 # Detailed instructions for using the makefile:
 #
 #  1. Modify the line containing "ARDUINO_INSTALL_DIR" to point to the directory that
-#     contains the Arduino installation (for example, under Mac OS X, this
+#     contains the Arduino installation (for example, under macOS, this
 #     might be /Applications/Arduino.app/Contents/Resources/Java).
 #
 #  2. Modify the line containing "UPLOAD_PORT" to refer to the filename
@@ -92,10 +92,13 @@ U8GLIB             ?= 1
 # this defines whether to include the Trinamic TMCStepper library
 TMC                ?= 1
 
+# this defines whether to include the AdaFruit NeoPixel library
+NEOPIXEL           ?= 0
+
 ############
 # Try to automatically determine whether RELOC_WORKAROUND is needed based
 # on GCC versions:
-#   http://www.avrfreaks.net/comment/1789106#comment-1789106
+#   https://www.avrfreaks.net/comment/1789106#comment-1789106
 
 CC_MAJ:=$(shell $(CC) -dM -E - < /dev/null | grep __GNUC__ | cut -f3 -d\ )
 CC_MIN:=$(shell $(CC) -dM -E - < /dev/null | grep __GNUC_MINOR__ | cut -f3 -d\ )
@@ -167,86 +170,110 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1100)
 else ifeq ($(HARDWARE_MOTHERBOARD),1101)
 # Velleman K8400 Controller (derived from 3Drag Controller)
 else ifeq ($(HARDWARE_MOTHERBOARD),1102)
-# 2PrintBeta BAM&DICE with STK drivers
+# Velleman K8600 Controller (derived from 3Drag Controller)
 else ifeq ($(HARDWARE_MOTHERBOARD),1103)
-# 2PrintBeta BAM&DICE Due with STK drivers
+# 2PrintBeta BAM&DICE with STK drivers
 else ifeq ($(HARDWARE_MOTHERBOARD),1104)
-# MKS BASE v1.0
+# 2PrintBeta BAM&DICE Due with STK drivers
 else ifeq ($(HARDWARE_MOTHERBOARD),1105)
-# MKS v1.4 with A4982 stepper drivers
+# MKS BASE v1.0
 else ifeq ($(HARDWARE_MOTHERBOARD),1106)
-# MKS v1.5 with Allegro A4982 stepper drivers
+# MKS v1.4 with A4982 stepper drivers
 else ifeq ($(HARDWARE_MOTHERBOARD),1107)
-# MKS BASE 1.0 with Heroic HR4982 stepper drivers
+# MKS v1.5 with Allegro A4982 stepper drivers
 else ifeq ($(HARDWARE_MOTHERBOARD),1108)
-# MKS GEN v1.3 or 1.4
+# MKS v1.6 with Allegro A4982 stepper drivers
 else ifeq ($(HARDWARE_MOTHERBOARD),1109)
-# MKS GEN L
+# MKS BASE 1.0 with Heroic HR4982 stepper drivers
 else ifeq ($(HARDWARE_MOTHERBOARD),1110)
-# zrib V2.0 control board (Chinese knock off RAMPS replica)
+# MKS GEN v1.3 or 1.4
 else ifeq ($(HARDWARE_MOTHERBOARD),1111)
-# Bigtreetech or BIQU KFB2.0
+# MKS GEN L
 else ifeq ($(HARDWARE_MOTHERBOARD),1112)
-# Felix 2.0+ Electronics Board (RAMPS like)
+# zrib V2.0 control board (Chinese knock off RAMPS replica)
 else ifeq ($(HARDWARE_MOTHERBOARD),1113)
-# Invent-A-Part RigidBoard
+# BigTreeTech or BIQU KFB2.0
 else ifeq ($(HARDWARE_MOTHERBOARD),1114)
-# Invent-A-Part RigidBoard V2
+# Felix 2.0+ Electronics Board (RAMPS like)
 else ifeq ($(HARDWARE_MOTHERBOARD),1115)
-# Sainsmart 2-in-1 board
+# Invent-A-Part RigidBoard
 else ifeq ($(HARDWARE_MOTHERBOARD),1116)
-# Ultimaker
+# Invent-A-Part RigidBoard V2
 else ifeq ($(HARDWARE_MOTHERBOARD),1117)
-# Ultimaker (Older electronics. Pre 1.5.4. This is rare)
+# Sainsmart 2-in-1 board
 else ifeq ($(HARDWARE_MOTHERBOARD),1118)
+# Ultimaker
+else ifeq ($(HARDWARE_MOTHERBOARD),1119)
+# Ultimaker (Older electronics. Pre 1.5.4. This is rare)
+else ifeq ($(HARDWARE_MOTHERBOARD),1120)
   MCU ?= atmega1280
 
 # Azteeg X3
-else ifeq ($(HARDWARE_MOTHERBOARD),1119)
-# Azteeg X3 Pro
-else ifeq ($(HARDWARE_MOTHERBOARD),1120)
-# Ultimainboard 2.x (Uses TEMP_SENSOR 20)
 else ifeq ($(HARDWARE_MOTHERBOARD),1121)
-# Rumba
+# Azteeg X3 Pro
 else ifeq ($(HARDWARE_MOTHERBOARD),1122)
-# Raise3D Rumba
+# Ultimainboard 2.x (Uses TEMP_SENSOR 20)
 else ifeq ($(HARDWARE_MOTHERBOARD),1123)
-# Rapide Lite RL200 Rumba
+# Rumba
 else ifeq ($(HARDWARE_MOTHERBOARD),1124)
-# Formbot T-Rex 2 Plus
+# Raise3D Rumba
 else ifeq ($(HARDWARE_MOTHERBOARD),1125)
-# Formbot T-Rex 3
+# Rapide Lite RL200 Rumba
 else ifeq ($(HARDWARE_MOTHERBOARD),1126)
-# Formbot Raptor
+# Formbot T-Rex 2 Plus
 else ifeq ($(HARDWARE_MOTHERBOARD),1127)
-# Formbot Raptor 2
+# Formbot T-Rex 3
 else ifeq ($(HARDWARE_MOTHERBOARD),1128)
-# bq ZUM Mega 3D
+# Formbot Raptor
 else ifeq ($(HARDWARE_MOTHERBOARD),1129)
-# MakeBoard Mini v2.1.2 is a control board sold by MicroMake
+# Formbot Raptor 2
 else ifeq ($(HARDWARE_MOTHERBOARD),1130)
-# TriGorilla Anycubic version 1.3 based on RAMPS EFB
+# bq ZUM Mega 3D
 else ifeq ($(HARDWARE_MOTHERBOARD),1131)
-# TriGorilla Anycubic version 1.4 based on RAMPS EFB
+# MakeBoard Mini v2.1.2 is a control board sold by MicroMake
 else ifeq ($(HARDWARE_MOTHERBOARD),1132)
-# TriGorilla Anycubic version 1.4 Rev 1.1
+# TriGorilla Anycubic version 1.3 based on RAMPS EFB
 else ifeq ($(HARDWARE_MOTHERBOARD),1133)
-# Creality: Ender-4, CR-8
+# TriGorilla Anycubic version 1.4 based on RAMPS EFB
 else ifeq ($(HARDWARE_MOTHERBOARD),1134)
-# Creality: CR10S, CR20, CR-X
+# TriGorilla Anycubic version 1.4 Rev 1.1
 else ifeq ($(HARDWARE_MOTHERBOARD),1135)
-# Dagoma F5
+# Creality: Ender-4, CR-8
 else ifeq ($(HARDWARE_MOTHERBOARD),1136)
-# FYSETC F6
+# Creality: CR10S, CR20, CR-X
 else ifeq ($(HARDWARE_MOTHERBOARD),1137)
-# Duplicator i3 Plus
+# Dagoma F5
 else ifeq ($(HARDWARE_MOTHERBOARD),1138)
-# VORON
+# FYSETC F6 1.3
 else ifeq ($(HARDWARE_MOTHERBOARD),1139)
-# TRONXY V3 1.0
+# FYSETC F6 1.5
 else ifeq ($(HARDWARE_MOTHERBOARD),1140)
-# Z-Bolt X Series
+# Duplicator i3 Plus
 else ifeq ($(HARDWARE_MOTHERBOARD),1141)
+# VORON
+else ifeq ($(HARDWARE_MOTHERBOARD),1142)
+# TRONXY V3 1.0
+else ifeq ($(HARDWARE_MOTHERBOARD),1143)
+# Z-Bolt X Series
+else ifeq ($(HARDWARE_MOTHERBOARD),1144)
+# TT OSCAR
+else ifeq ($(HARDWARE_MOTHERBOARD),1145)
+# Overlord/Overlord Pro
+else ifeq ($(HARDWARE_MOTHERBOARD),1146)
+# ADIMLab Gantry v1
+else ifeq ($(HARDWARE_MOTHERBOARD),1147)
+# ADIMLab Gantry v2
+else ifeq ($(HARDWARE_MOTHERBOARD),1148)
+# BIQU Tango V1
+else ifeq ($(HARDWARE_MOTHERBOARD),1149)
+# MKS GEN L V2
+else ifeq ($(HARDWARE_MOTHERBOARD),1150)
+# Copymaster 3D
+else ifeq ($(HARDWARE_MOTHERBOARD),1151)
+# Ortur 4
+else ifeq ($(HARDWARE_MOTHERBOARD),1152)
+# Tenlog D3 Hero
+else ifeq ($(HARDWARE_MOTHERBOARD),1153)
 
 #
 # RAMBo and derivatives
@@ -273,50 +300,54 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1205)
 else ifeq ($(HARDWARE_MOTHERBOARD),1300)
 # Cartesio CN Controls V12
 else ifeq ($(HARDWARE_MOTHERBOARD),1301)
-# Cheaptronic v1.0
+# Cartesio CN Controls V15
 else ifeq ($(HARDWARE_MOTHERBOARD),1302)
-# Cheaptronic v2.0
+# Cheaptronic v1.0
 else ifeq ($(HARDWARE_MOTHERBOARD),1303)
-# Makerbot Mightyboard Revision E
+# Cheaptronic v2.0
 else ifeq ($(HARDWARE_MOTHERBOARD),1304)
-# Megatronics
+# Makerbot Mightyboard Revision E
 else ifeq ($(HARDWARE_MOTHERBOARD),1305)
-# Megatronics v2.0
+# Megatronics
 else ifeq ($(HARDWARE_MOTHERBOARD),1306)
-# Megatronics v3.0
+# Megatronics v2.0
 else ifeq ($(HARDWARE_MOTHERBOARD),1307)
-# Megatronics v3.1
+# Megatronics v3.0
 else ifeq ($(HARDWARE_MOTHERBOARD),1308)
-# Megatronics v3.2
+# Megatronics v3.1
 else ifeq ($(HARDWARE_MOTHERBOARD),1309)
-# Elefu Ra Board (v3)
+# Megatronics v3.2
 else ifeq ($(HARDWARE_MOTHERBOARD),1310)
-# Leapfrog
+# Elefu Ra Board (v3)
 else ifeq ($(HARDWARE_MOTHERBOARD),1311)
-# Mega controller
+# Leapfrog
 else ifeq ($(HARDWARE_MOTHERBOARD),1312)
-# Geeetech GT2560 Rev B for Mecreator2
+# Mega controller
 else ifeq ($(HARDWARE_MOTHERBOARD),1313)
-# Geeetech GT2560 Rev. A
+# Geeetech GT2560 Rev B for Mecreator2
 else ifeq ($(HARDWARE_MOTHERBOARD),1314)
-# Geeetech GT2560 Rev. A+ (with auto level probe)
+# Geeetech GT2560 Rev. A
 else ifeq ($(HARDWARE_MOTHERBOARD),1315)
-# Geeetech GT2560 Rev B for A10(M/D)
+# Geeetech GT2560 Rev. A+ (with auto level probe)
 else ifeq ($(HARDWARE_MOTHERBOARD),1316)
-# Geeetech GT2560 Rev B for A20(M/D)
+# Geeetech GT2560 Rev B for A10(M/D)
 else ifeq ($(HARDWARE_MOTHERBOARD),1317)
-# Einstart retrofit
+# Geeetech GT2560 Rev B for A20(M/D)
 else ifeq ($(HARDWARE_MOTHERBOARD),1318)
-# Wanhao 0ne+ i3 Mini
+# Einstart retrofit
 else ifeq ($(HARDWARE_MOTHERBOARD),1319)
+# Wanhao 0ne+ i3 Mini
+else ifeq ($(HARDWARE_MOTHERBOARD),1320)
 
 #
 # ATmega1281, ATmega2561
 #
 
+# Minitronics v1.0/1.1
 else ifeq ($(HARDWARE_MOTHERBOARD),1400)
   MCU              ?= atmega1281
-else ifeq ($(HARDWARE_MOTHERBOARD),1410)
+# Silvergate v1.0
+else ifeq ($(HARDWARE_MOTHERBOARD),1401)
   MCU              ?= atmega1281
 
 #
@@ -335,34 +366,38 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1501)
 else ifeq ($(HARDWARE_MOTHERBOARD),1502)
   HARDWARE_VARIANT ?= Sanguino
   MCU              ?= atmega644p
-# Melzi with ATmega1284 (MaKr3d version)
+# Melzi V2.0
 else ifeq ($(HARDWARE_MOTHERBOARD),1503)
   HARDWARE_VARIANT ?= Sanguino
   MCU              ?= atmega1284p
-# Melzi Creality3D board (for CR-10 etc)
+# Melzi with ATmega1284 (MaKr3d version)
 else ifeq ($(HARDWARE_MOTHERBOARD),1504)
   HARDWARE_VARIANT ?= Sanguino
   MCU              ?= atmega1284p
-# Melzi Malyan M150 board
+# Melzi Creality3D board (for CR-10 etc)
 else ifeq ($(HARDWARE_MOTHERBOARD),1505)
   HARDWARE_VARIANT ?= Sanguino
   MCU              ?= atmega1284p
-# Tronxy X5S
+# Melzi Malyan M150 board
 else ifeq ($(HARDWARE_MOTHERBOARD),1506)
   HARDWARE_VARIANT ?= Sanguino
   MCU              ?= atmega1284p
-# STB V1.1
+# Tronxy X5S
 else ifeq ($(HARDWARE_MOTHERBOARD),1507)
   HARDWARE_VARIANT ?= Sanguino
   MCU              ?= atmega1284p
-# Azteeg X1
+# STB V1.1
 else ifeq ($(HARDWARE_MOTHERBOARD),1508)
   HARDWARE_VARIANT ?= Sanguino
   MCU              ?= atmega1284p
-# Anet 1.0 (Melzi clone)
+# Azteeg X1
 else ifeq ($(HARDWARE_MOTHERBOARD),1509)
   HARDWARE_VARIANT ?= Sanguino
   MCU              ?= atmega1284p
+# Anet 1.0 (Melzi clone)
+else ifeq ($(HARDWARE_MOTHERBOARD),1510)
+  HARDWARE_VARIANT ?= Sanguino
+  MCU              ?= atmega1284p
 
 #
 # Other ATmega644P, ATmega644, ATmega1284P
@@ -660,7 +695,7 @@ ifeq ($(HARDWARE_VARIANT), Teensy)
 
 else ifeq ($(HARDWARE_VARIANT), archim)
   CDEFS      += -DARDUINO_SAM_ARCHIM -DARDUINO_ARCH_SAM -D__SAM3X8E__ -DUSB_VID=0x27b1 -DUSB_PID=0x0001 -DUSBCON '-DUSB_MANUFACTURER="UltiMachine"' '-DUSB_PRODUCT="Archim"'
-  LIB_CXXSRC += variant.cpp IPAddress.cpp Reset.cpp RingBuffer.cpp Stream.cpp UARTClass.cpp  USARTClass.cpp abi.cpp new.cpp watchdog.cpp CDC.cpp PluggableUSB.cpp  USBCore.cpp
+  LIB_CXXSRC += variant.cpp IPAddress.cpp Reset.cpp RingBuffer.cpp Stream.cpp UARTClass.cpp  USARTClass.cpp abi.cpp new.cpp watchdog.cpp CDC.cpp PluggableUSB.cpp USBCore.cpp
   LIB_SRC    += cortex_handlers.c iar_calls_sam3.c syscalls_sam3.c dtostrf.c itoa.c
 
   ifeq ($(U8GLIB), 1)
@@ -681,7 +716,7 @@ CXXSTANDARD = -std=gnu++11
 CDEBUG = -g$(DEBUG)
 CWARN   = -Wall -Wstrict-prototypes -Wno-packed-bitfield-compat -Wno-pragmas -Wunused-parameter
 CXXWARN = -Wall                     -Wno-packed-bitfield-compat -Wno-pragmas -Wunused-parameter
-CTUNING = -fsigned-char -funsigned-bitfields -fpack-struct -fno-exceptions \
+CTUNING = -fsigned-char -funsigned-bitfields -fno-exceptions \
           -fshort-enums -ffunction-sections -fdata-sections
 ifneq ($(HARDWARE_MOTHERBOARD),)
   CTUNING += -DMOTHERBOARD=${HARDWARE_MOTHERBOARD}

Marlin/Marlin.ino

@@ -1,9 +1,8 @@
-/*
-================================================================================
+/*==============================================================================
 
   Marlin Firmware
 
-  (c) 2011-2018 MarlinFirmware
+  (c) 2011-2020 MarlinFirmware
   Portions of Marlin are (c) by their respective authors.
   All code complies with GPLv2 and/or GPLv3
 
@@ -12,30 +11,33 @@
 Greetings! Thank you for choosing Marlin 2 as your 3D printer firmware.
 
 To configure Marlin you must edit Configuration.h and Configuration_adv.h
-located in the root 'Marlin' folder. Check the config/examples folder to see if
-there's a more suitable starting-point for your specific hardware.
+located in the root 'Marlin' folder. Check our Configurations repository to
+see if there's a more suitable starting-point for your specific hardware.
 
 Before diving in, we recommend the following essential links:
 
 Marlin Firmware Official Website
 
-  - http://marlinfw.org/
+  - https://marlinfw.org/
     The official Marlin Firmware website contains the most up-to-date
     documentation. Contributions are always welcome!
 
 Configuration
 
+  - https://github.com/MarlinFirmware/Configurations
+    Example configurations for several printer models.
+
   - https://www.youtube.com/watch?v=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
 
-  - http://marlinfw.org/docs/configuration/configuration.html
+  - https://marlinfw.org/docs/configuration/configuration.html
     Marlin's configuration options are explained in more detail here.
 
 Getting Help
 
-  - http://forums.reprap.org/list.php?415
+  - https://reprap.org/forum/list.php?415
     The Marlin Discussion Forum is a great place to get help from other Marlin
     users who may have experienced similar issues to your own.
 
@@ -45,9 +47,11 @@ Getting Help
 
 Contributing
 
-  - http://marlinfw.org/docs/development/contributing.html
+  - https://marlinfw.org/docs/development/contributing.html
     If you'd like to contribute to Marlin, read this first!
 
-  - http://marlinfw.org/docs/development/coding_standards.html
+  - https://marlinfw.org/docs/development/coding_standards.html
     Before submitting code get to know the Coding Standards.
-*/
+
+
+------------------------------------------------------------------------------*/

Marlin/Version.h

@@ -0,0 +1,78 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once
+
+////////////////////////////
+// VENDOR VERSION EXAMPLE //
+////////////////////////////
+
+/**
+ * Marlin release version identifier
+ */
+#define SHORT_BUILD_VERSION "LulzbotUnified - 2.0.6"
+
+/**
+ * Verbose version identifier which should contain a reference to the location
+ * from where the binary was downloaded or the source code was compiled.
+ */
+#define DETAILED_BUILD_VERSION SHORT_BUILD_VERSION " Rev2"
+
+/**
+ * The STRING_DISTRIBUTION_DATE represents when the binary file was built,
+ * here we define this default string as the date where the latest release
+ * version was tagged.
+ */
+#define STRING_DISTRIBUTION_DATE "2020-08-09"
+
+/**
+ * Defines a generic printer name to be output to the LCD after booting Marlin.
+ */
+//#define MACHINE_NAME "3D Printer"
+
+/**
+ * The SOURCE_CODE_URL is the location where users will find the Marlin Source
+ * Code which is installed on the device. In most cases —unless the manufacturer
+ * has a distinct Github fork— the Source Code URL should just be the main
+ * Marlin repository.
+ */
+//#define SOURCE_CODE_URL "https://github.com/MarlinFirmware/Marlin"
+
+/**
+ * Default generic printer UUID.
+ */
+//#define DEFAULT_MACHINE_UUID "cede2a2f-41a2-4748-9b12-c55c62f367ff"
+
+/**
+ * The WEBSITE_URL is the location where users can get more information such as
+ * documentation about a specific Marlin release.
+ */
+//#define WEBSITE_URL "https://marlinfw.org"
+
+/**
+ * Set the vendor info the serial USB interface, if changable
+ * Currently only supported by DUE platform
+ */
+#if ENABLED(TazPro)
+  #define USB_DEVICE_VENDOR_ID 0x27b1 // <-- changed
+  #define USB_DEVICE_PRODUCT_ID 0x0001 // <-- changed
+#endif
+//#define  USB_DEVICE_MANUFACTURE_NAME    WEBSITE_URL

Marlin/_Bootscreen.h

@@ -0,0 +1,103 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * Custom Bitmap for splashscreen
+ *
+ * You may use one of the following tools to generate the C++ bitmap array from
+ * a black and white image:
+ *
+ *  - http://www.marlinfw.org/tools/u8glib/converter.html
+ *  - http://www.digole.com/tools/PicturetoC_Hex_converter.php
+ */
+#include <avr/pgmspace.h>
+
+#define CUSTOM_BOOTSCREEN_TIMEOUT   2500
+#define CUSTOM_BOOTSCREEN_BMPWIDTH  60
+#define CUSTOM_BOOTSCREEN_BMPHEIGHT 64
+
+const unsigned char custom_start_bmp[574] PROGMEM = {
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0xc, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x12, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x23, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x21, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x4c, 0x80, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x5e, 0x80, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x92, 0x40, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0xa1, 0x40, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x1, 0x21, 0x20, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x2, 0x7f, 0x90, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x2, 0x0, 0x10, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x7, 0xff, 0xf8, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x4, 0x0, 0x8, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x8, 0x0, 0x4, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x8, 0x0, 0x6, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x10, 0x0, 0x2, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x30, 0x1e, 0x1, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x20, 0x7f, 0x81, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x41, 0xff, 0xe0, 0x80, 0x0, 0x0,
+0x0, 0x0, 0x43, 0xfc, 0xf0, 0x80, 0x0, 0x0,
+0x0, 0x0, 0x87, 0x3b, 0x78, 0x40, 0x0, 0x0,
+0x0, 0x1, 0x8e, 0xdb, 0xfc, 0x60, 0x0, 0x0,
+0x0, 0x1, 0xf, 0xeb, 0xcc, 0x20, 0x0, 0x0,
+0x0, 0x2, 0x1f, 0xed, 0xb6, 0x10, 0x0, 0x0,
+0x0, 0x2, 0x1f, 0xde, 0xb6, 0x10, 0x0, 0x0,
+0x0, 0x4, 0x39, 0xcd, 0x7f, 0x8, 0x0, 0x0,
+0x0, 0x4, 0x36, 0xe0, 0xff, 0x8, 0x0, 0x0,
+0x0, 0x8, 0x7e, 0xc0, 0xbb, 0x84, 0x0, 0x0,
+0x0, 0x18, 0x7f, 0x0, 0x5d, 0x86, 0x0, 0x0,
+0x0, 0x10, 0x7f, 0xc0, 0xed, 0x82, 0x0, 0x0,
+0x0, 0x20, 0x3c, 0xc0, 0x73, 0x1, 0x0, 0x0,
+0x0, 0x20, 0x3b, 0x33, 0x7f, 0x1, 0x0, 0x0,
+0x0, 0x70, 0x1b, 0xe7, 0x7e, 0x3, 0x80, 0x0,
+0x0, 0xc8, 0x1d, 0xee, 0xde, 0x4, 0xc0, 0x0,
+0x0, 0x88, 0xf, 0xde, 0xdc, 0x4, 0x40, 0x0,
+0x1, 0x24, 0xf, 0xdf, 0x3c, 0x9, 0x20, 0x0,
+0x1, 0x26, 0x7, 0xdb, 0xf8, 0x19, 0x20, 0x0,
+0x2, 0x72, 0x3, 0xe7, 0xf0, 0x13, 0x90, 0x0,
+0x2, 0x51, 0x1, 0xff, 0xe0, 0x22, 0x90, 0x0,
+0x4, 0x89, 0x0, 0x7f, 0x80, 0x24, 0x48, 0x0,
+0x9, 0x4, 0x80, 0x1e, 0x0, 0x48, 0x24, 0x0,
+0xb, 0xfe, 0x40, 0x0, 0x0, 0xdf, 0xf4, 0x0,
+0x10, 0x0, 0x40, 0x0, 0x0, 0x80, 0x2, 0x0,
+0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x10, 0x22, 0x10, 0x3c, 0x3c, 0xe, 0x1f, 0x0,
+0x10, 0x22, 0x10, 0x4, 0x22, 0x11, 0x4, 0x0,
+0x10, 0x22, 0x10, 0x8, 0x22, 0x11, 0x4, 0x0,
+0x10, 0x22, 0x10, 0x8, 0x3c, 0x11, 0x4, 0x0,
+0x10, 0x22, 0x10, 0x10, 0x22, 0x11, 0x4, 0x0,
+0x10, 0x22, 0x10, 0x20, 0x22, 0x11, 0x4, 0x0,
+0x1e, 0x1c, 0x1e, 0x3c, 0x3c, 0xe, 0x4, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0
+};

Marlin/lib/readme.txt

@@ -33,4 +33,4 @@ PlatformIO will find your libraries automatically, configure preprocessor's
 include paths and build them.
 
 More information about PlatformIO Library Dependency Finder
-- http://docs.platformio.org/page/librarymanager/ldf.html
+- https://docs.platformio.org/page/librarymanager/ldf.html

Marlin/src/HAL/AVR/HAL.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,10 +16,9 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
-
 #ifdef __AVR__
 
 #include "../../inc/MarlinConfig.h"
@@ -35,7 +34,7 @@
 // Public functions
 // ------------------------
 
-void HAL_init(void) {
+void HAL_init() {
   // Init Servo Pins
   #define INIT_SERVO(N) OUT_WRITE(SERVO##N##_PIN, LOW)
   #if HAS_SERVO_0

Marlin/src/HAL/AVR/HAL.h

@@ -0,0 +1,213 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
+ *
+ * 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
+
+#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"
+#endif
+
+#include <stdint.h>
+#include <util/delay.h>
+#include <avr/eeprom.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <avr/io.h>
+
+#ifndef pgm_read_ptr
+  // Compatibility for avr-libc 1.8.0-4.1 included with Ubuntu for
+  // Windows Subsystem for Linux on Windows 10 as of 10/18/2019
+  #define pgm_read_ptr_far(address_long) (void*)__ELPM_word((uint32_t)(address_long))
+  #define pgm_read_ptr_near(address_short) (void*)__LPM_word((uint16_t)(address_short))
+  #define pgm_read_ptr(address_short) pgm_read_ptr_near(address_short)
+#endif
+
+// ------------------------
+// Defines
+// ------------------------
+
+// AVR PROGMEM extension for sprintf_P
+#define S_FMT "%S"
+
+// AVR PROGMEM extension for string define
+#define PGMSTR(NAM,STR) const char NAM[] PROGMEM = STR
+
+#ifndef CRITICAL_SECTION_START
+  #define CRITICAL_SECTION_START()  unsigned char _sreg = SREG; cli()
+  #define CRITICAL_SECTION_END()    SREG = _sreg
+#endif
+#define ISRS_ENABLED() TEST(SREG, SREG_I)
+#define ENABLE_ISRS()  sei()
+#define DISABLE_ISRS() cli()
+
+// ------------------------
+// Types
+// ------------------------
+
+typedef int8_t pin_t;
+
+#define SHARED_SERVOS HAS_SERVOS
+#define HAL_SERVO_LIB Servo
+
+// ------------------------
+// Public Variables
+// ------------------------
+
+//extern uint8_t MCUSR;
+
+// Serial ports
+#ifdef USBCON
+  #if ENABLED(BLUETOOTH)
+    #define MYSERIAL0 bluetoothSerial
+  #else
+    #define MYSERIAL0 Serial
+  #endif
+  #define NUM_SERIAL 1
+#else
+  #if !WITHIN(SERIAL_PORT, -1, 3)
+    #error "SERIAL_PORT must be from -1 to 3. Please update your configuration."
+  #endif
+
+  #define MYSERIAL0 customizedSerial1
+
+  #ifdef SERIAL_PORT_2
+    #if !WITHIN(SERIAL_PORT_2, -1, 3)
+      #error "SERIAL_PORT_2 must be from -1 to 3. Please update your configuration."
+    #elif SERIAL_PORT_2 == SERIAL_PORT
+      #error "SERIAL_PORT_2 must be different than SERIAL_PORT. Please update your configuration."
+    #endif
+    #define MYSERIAL1 customizedSerial2
+    #define NUM_SERIAL 2
+  #else
+    #define NUM_SERIAL 1
+  #endif
+#endif
+
+#ifdef DGUS_SERIAL_PORT
+  #if !WITHIN(DGUS_SERIAL_PORT, -1, 3)
+    #error "DGUS_SERIAL_PORT must be from -1 to 3. Please update your configuration."
+  #elif DGUS_SERIAL_PORT == SERIAL_PORT
+    #error "DGUS_SERIAL_PORT must be different than SERIAL_PORT. Please update your configuration."
+  #elif defined(SERIAL_PORT_2) && DGUS_SERIAL_PORT == SERIAL_PORT_2
+    #error "DGUS_SERIAL_PORT must be different than SERIAL_PORT_2. Please update your configuration."
+  #endif
+  #define DGUS_SERIAL internalDgusSerial
+
+  #define DGUS_SERIAL_GET_TX_BUFFER_FREE DGUS_SERIAL.get_tx_buffer_free
+#endif
+
+#ifdef ANYCUBIC_LCD_SERIAL_PORT
+  #if !WITHIN(ANYCUBIC_LCD_SERIAL_PORT, -1, 3)
+    #error "ANYCUBIC_LCD_SERIAL_PORT must be from -1 to 3. Please update your configuration."
+  #elif ANYCUBIC_LCD_SERIAL_PORT == SERIAL_PORT
+    #error "ANYCUBIC_LCD_SERIAL_PORT must be different than SERIAL_PORT. Please update your configuration."
+  #elif defined(SERIAL_PORT_2) && ANYCUBIC_LCD_SERIAL_PORT == SERIAL_PORT_2
+    #error "ANYCUBIC_LCD_SERIAL_PORT must be different than SERIAL_PORT_2. Please update your configuration."
+  #endif
+  #define ANYCUBIC_LCD_SERIAL anycubicLcdSerial
+#endif
+
+// ------------------------
+// Public functions
+// ------------------------
+
+void HAL_init();
+
+//void cli();
+
+//void _delay_ms(const int delay);
+
+inline void HAL_clear_reset_source() { MCUSR = 0; }
+inline uint8_t HAL_get_reset_source() { return MCUSR; }
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-function"
+extern "C" {
+  int freeMemory();
+}
+#pragma GCC diagnostic pop
+
+// ADC
+#ifdef DIDR2
+  #define HAL_ANALOG_SELECT(ind) do{ if (ind < 8) SBI(DIDR0, ind); else SBI(DIDR2, ind & 0x07); }while(0)
+#else
+  #define HAL_ANALOG_SELECT(ind) SBI(DIDR0, ind);
+#endif
+
+inline void HAL_adc_init() {
+  ADCSRA = _BV(ADEN) | _BV(ADSC) | _BV(ADIF) | 0x07;
+  DIDR0 = 0;
+  #ifdef DIDR2
+    DIDR2 = 0;
+  #endif
+}
+
+#define SET_ADMUX_ADCSRA(ch) ADMUX = _BV(REFS0) | (ch & 0x07); SBI(ADCSRA, ADSC)
+#ifdef MUX5
+  #define HAL_START_ADC(ch) if (ch > 7) ADCSRB = _BV(MUX5); else ADCSRB = 0; SET_ADMUX_ADCSRA(ch)
+#else
+  #define HAL_START_ADC(ch) ADCSRB = 0; SET_ADMUX_ADCSRA(ch)
+#endif
+
+#define HAL_ADC_VREF        5.0
+#define HAL_ADC_RESOLUTION 10
+#define HAL_READ_ADC()  ADC
+#define HAL_ADC_READY() !TEST(ADCSRA, ADSC)
+
+#define GET_PIN_MAP_PIN(index) index
+#define GET_PIN_MAP_INDEX(pin) pin
+#define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
+
+#define HAL_SENSITIVE_PINS 0, 1
+
+#ifdef __AVR_AT90USB1286__
+  #define JTAG_DISABLE() do{ MCUCR = 0x80; MCUCR = 0x80; }while(0)
+#endif
+
+// AVR compatibility
+#define strtof strtod
+
+#define HAL_CAN_SET_PWM_FREQ   // This HAL supports PWM Frequency adjustment
+
+/**
+ *  set_pwm_frequency
+ *  Sets the frequency of the timer corresponding to the provided pin
+ *  as close as possible to the provided desired frequency. Internally
+ *  calculates the required waveform generation mode, prescaler and
+ *  resolution values required and sets the timer registers accordingly.
+ *  NOTE that the frequency is applied to all pins on the timer (Ex OC3A, OC3B and OC3B)
+ *  NOTE that there are limitations, particularly if using TIMER2. (see Configuration_adv.h -> FAST FAN PWM Settings)
+ */
+void set_pwm_frequency(const pin_t pin, int f_desired);
+
+/**
+ * set_pwm_duty
+ *  Sets the PWM duty cycle of the provided pin to the provided value
+ *  Optionally allows inverting the duty cycle [default = false]
+ *  Optionally allows changing the maximum size of the provided value to enable finer PWM duty control [default = 255]
+ */
+void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);

Marlin/src/HAL/AVR/HAL_SPI.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -33,7 +33,7 @@
 
 #include "../../inc/MarlinConfig.h"
 
-void spiBegin(void) {
+void spiBegin() {
   OUT_WRITE(SS_PIN, HIGH);
   SET_OUTPUT(SCK_PIN);
   SET_INPUT(MISO_PIN);
@@ -53,9 +53,9 @@ void spiBegin(void) {
 
 #if NONE(SOFTWARE_SPI, FORCE_SOFT_SPI)
 
-  //------------------------------------------------------------------------------
+  // ------------------------
   // Hardware SPI
-  //------------------------------------------------------------------------------
+  // ------------------------
 
   // make sure SPCR rate is in expected bits
   #if (SPR0 != 0 || SPR1 != 1)
@@ -81,7 +81,7 @@ void spiBegin(void) {
   }
 
   /** SPI receive a byte */
-  uint8_t spiRec(void) {
+  uint8_t spiRec() {
     SPDR = 0xFF;
     while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
     return SPDR;
@@ -177,22 +177,17 @@ void spiBegin(void) {
 
 #else // SOFTWARE_SPI || FORCE_SOFT_SPI
 
-  //------------------------------------------------------------------------------
+  // ------------------------
   // Software SPI
-  //------------------------------------------------------------------------------
+  // ------------------------
 
   // nop to tune soft SPI timing
   #define nop asm volatile ("\tnop\n")
 
-  // Set SPI rate
-  void spiInit(uint8_t spiRate) {
-    UNUSED(spiRate);  // nothing to do
-  }
+  void spiInit(uint8_t) { /* do nothing */ }
 
   // Begin SPI transaction, set clock, bit order, data mode
-  void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
-    UNUSED(spiBeginTransaction);  // nothing to do
-  }
+  void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) { /* do nothing */ }
 
   // Soft SPI receive byte
   uint8_t spiRec() {
@@ -202,7 +197,7 @@ void spiBegin(void) {
     // output pin high - like sending 0xFF
     WRITE(MOSI_PIN, HIGH);
 
-    for (uint8_t i = 0; i < 8; i++) {
+    LOOP_L_N(i, 8) {
       WRITE(SCK_PIN, HIGH);
 
       nop; // adjust so SCK is nice
@@ -229,7 +224,7 @@ void spiBegin(void) {
   void spiSend(uint8_t data) {
     // no interrupts during byte send - about 8µs
     cli();
-    for (uint8_t i = 0; i < 8; i++) {
+    LOOP_L_N(i, 8) {
       WRITE(SCK_PIN, LOW);
       WRITE(MOSI_PIN, data & 0x80);
       data <<= 1;

Marlin/src/HAL/AVR/MarlinSerial.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -41,7 +41,11 @@
 #if !defined(USBCON) && (defined(UBRRH) || defined(UBRR0H) || defined(UBRR1H) || defined(UBRR2H) || defined(UBRR3H))
 
   #include "MarlinSerial.h"
-  #include "../../Marlin.h"
+  #include "../../MarlinCore.h"
+
+  #if ENABLED(DIRECT_STEPPING)
+    #include "../../feature/direct_stepping.h"
+  #endif
 
   template<typename Cfg> typename MarlinSerial<Cfg>::ring_buffer_r MarlinSerial<Cfg>::rx_buffer = { 0, 0, { 0 } };
   template<typename Cfg> typename MarlinSerial<Cfg>::ring_buffer_t MarlinSerial<Cfg>::tx_buffer = { 0 };
@@ -55,7 +59,7 @@
   // A SW memory barrier, to ensure GCC does not overoptimize loops
   #define sw_barrier() asm volatile("": : :"memory");
 
-  #include "../../feature/emergency_parser.h"
+  #include "../../feature/e_parser.h"
 
   // "Atomically" read the RX head index value without disabling interrupts:
   // This MUST be called with RX interrupts enabled, and CAN'T be called
@@ -131,6 +135,18 @@
 
     static EmergencyParser::State emergency_state; // = EP_RESET
 
+    // This must read the R_UCSRA register before reading the received byte to detect error causes
+    if (Cfg::DROPPED_RX && B_DOR && !++rx_dropped_bytes) --rx_dropped_bytes;
+    if (Cfg::RX_OVERRUNS && B_DOR && !++rx_buffer_overruns) --rx_buffer_overruns;
+    if (Cfg::RX_FRAMING_ERRORS && B_FE && !++rx_framing_errors) --rx_framing_errors;
+
+    // Read the character from the USART
+    uint8_t c = R_UDR;
+
+    #if ENABLED(DIRECT_STEPPING)
+      if (page_manager.maybe_store_rxd_char(c)) return;
+    #endif
+
     // Get the tail - Nothing can alter its value while this ISR is executing, but there's
     // a chance that this ISR interrupted the main process while it was updating the index.
     // The backup mechanism ensures the correct value is always returned.
@@ -142,14 +158,6 @@
     // Get the next element
     ring_buffer_pos_t i = (ring_buffer_pos_t)(h + 1) & (ring_buffer_pos_t)(Cfg::RX_SIZE - 1);
 
-    // This must read the R_UCSRA register before reading the received byte to detect error causes
-    if (Cfg::DROPPED_RX && B_DOR && !++rx_dropped_bytes) --rx_dropped_bytes;
-    if (Cfg::RX_OVERRUNS && B_DOR && !++rx_buffer_overruns) --rx_buffer_overruns;
-    if (Cfg::RX_FRAMING_ERRORS && B_FE && !++rx_framing_errors) --rx_framing_errors;
-
-    // Read the character from the USART
-    uint8_t c = R_UDR;
-
     if (Cfg::EMERGENCYPARSER) emergency_parser.update(emergency_state, c);
 
     // If the character is to be stored at the index just before the tail
@@ -271,7 +279,7 @@
 
   // (called with TX irqs disabled)
   template<typename Cfg>
-  FORCE_INLINE void MarlinSerial<Cfg>::_tx_udr_empty_irq(void) {
+  FORCE_INLINE void MarlinSerial<Cfg>::_tx_udr_empty_irq() {
     if (Cfg::TX_SIZE > 0) {
       // Read positions
       uint8_t t = tx_buffer.tail;
@@ -363,13 +371,13 @@
   }
 
   template<typename Cfg>
-  int MarlinSerial<Cfg>::peek(void) {
+  int MarlinSerial<Cfg>::peek() {
     const ring_buffer_pos_t h = atomic_read_rx_head(), t = rx_buffer.tail;
     return h == t ? -1 : rx_buffer.buffer[t];
   }
 
   template<typename Cfg>
-  int MarlinSerial<Cfg>::read(void) {
+  int MarlinSerial<Cfg>::read() {
     const ring_buffer_pos_t h = atomic_read_rx_head();
 
     // Read the tail. Main thread owns it, so it is safe to directly read it
@@ -412,13 +420,13 @@
   }
 
   template<typename Cfg>
-  typename MarlinSerial<Cfg>::ring_buffer_pos_t MarlinSerial<Cfg>::available(void) {
+  typename MarlinSerial<Cfg>::ring_buffer_pos_t MarlinSerial<Cfg>::available() {
     const ring_buffer_pos_t h = atomic_read_rx_head(), t = rx_buffer.tail;
     return (ring_buffer_pos_t)(Cfg::RX_SIZE + h - t) & (Cfg::RX_SIZE - 1);
   }
 
   template<typename Cfg>
-  void MarlinSerial<Cfg>::flush(void) {
+  void MarlinSerial<Cfg>::flush() {
 
     // Set the tail to the head:
     //  - Read the RX head index in a safe way. (See atomic_read_rx_head.)
@@ -505,7 +513,7 @@
   }
 
   template<typename Cfg>
-  void MarlinSerial<Cfg>::flushTX(void) {
+  void MarlinSerial<Cfg>::flushTX() {
 
     if (Cfg::TX_SIZE == 0) {
       // No bytes written, no need to flush. This special case is needed since there's
@@ -595,7 +603,7 @@
   }
 
   template<typename Cfg>
-  void MarlinSerial<Cfg>::println(void) {
+  void MarlinSerial<Cfg>::println() {
     print('\r');
     print('\n');
   }
@@ -682,7 +690,7 @@
 
     // Round correctly so that print(1.999, 2) prints as "2.00"
     double rounding = 0.5;
-    for (uint8_t i = 0; i < digits; ++i) rounding *= 0.1;
+    LOOP_L_N(i, digits) rounding *= 0.1;
     number += rounding;
 
     // Extract the integer part of the number and print it
@@ -757,6 +765,51 @@
 
 #endif
 
+#ifdef DGUS_SERIAL_PORT
+
+  template<typename Cfg>
+  typename MarlinSerial<Cfg>::ring_buffer_pos_t MarlinSerial<Cfg>::get_tx_buffer_free() {
+    const ring_buffer_pos_t t = tx_buffer.tail,  // next byte to send.
+                            h = tx_buffer.head;  // next pos for queue.
+    int ret = t - h - 1;
+    if (ret < 0) ret += Cfg::TX_SIZE + 1;
+    return ret;
+  }
+
+  ISR(SERIAL_REGNAME(USART,DGUS_SERIAL_PORT,_RX_vect)) {
+    MarlinSerial<MarlinInternalSerialCfg<DGUS_SERIAL_PORT>>::store_rxd_char();
+  }
+
+  ISR(SERIAL_REGNAME(USART,DGUS_SERIAL_PORT,_UDRE_vect)) {
+    MarlinSerial<MarlinInternalSerialCfg<DGUS_SERIAL_PORT>>::_tx_udr_empty_irq();
+  }
+
+  // Preinstantiate
+  template class MarlinSerial<MarlinInternalSerialCfg<DGUS_SERIAL_PORT>>;
+
+  // Instantiate
+  MarlinSerial<MarlinInternalSerialCfg<DGUS_SERIAL_PORT>> internalDgusSerial;
+
+#endif
+
+#ifdef ANYCUBIC_LCD_SERIAL_PORT
+
+  ISR(SERIAL_REGNAME(USART,ANYCUBIC_LCD_SERIAL_PORT,_RX_vect)) {
+    MarlinSerial<AnycubicLcdSerialCfg<ANYCUBIC_LCD_SERIAL_PORT>>::store_rxd_char();
+  }
+
+  ISR(SERIAL_REGNAME(USART,ANYCUBIC_LCD_SERIAL_PORT,_UDRE_vect)) {
+    MarlinSerial<AnycubicLcdSerialCfg<ANYCUBIC_LCD_SERIAL_PORT>>::_tx_udr_empty_irq();
+  }
+
+  // Preinstantiate
+  template class MarlinSerial<AnycubicLcdSerialCfg<ANYCUBIC_LCD_SERIAL_PORT>>;
+
+  // Instantiate
+  MarlinSerial<AnycubicLcdSerialCfg<ANYCUBIC_LCD_SERIAL_PORT>> anycubicLcdSerial;
+
+#endif
+
 // For AT90USB targets use the UART for BT interfacing
 #if defined(USBCON) && ENABLED(BLUETOOTH)
   HardwareSerial bluetoothSerial;

Marlin/src/HAL/AVR/MarlinSerial.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -31,10 +31,10 @@
  * Templatized 01 October 2018 by Eduardo José Tagle to allow multiple instances
  */
 
-#include "../shared/MarlinSerial.h"
-
 #include <WString.h>
 
+#include "../../inc/MarlinConfigPre.h"
+
 #ifndef SERIAL_PORT
   #define SERIAL_PORT 0
 #endif
@@ -205,18 +205,21 @@
     public:
 
     FORCE_INLINE static void store_rxd_char();
-    FORCE_INLINE static void _tx_udr_empty_irq(void);
+    FORCE_INLINE static void _tx_udr_empty_irq();
 
     public:
       MarlinSerial() {};
       static void begin(const long);
       static void end();
-      static int peek(void);
-      static int read(void);
-      static void flush(void);
-      static ring_buffer_pos_t available(void);
+      static int peek();
+      static int read();
+      static void flush();
+      static ring_buffer_pos_t available();
       static void write(const uint8_t c);
-      static void flushTX(void);
+      static void flushTX();
+      #ifdef DGUS_SERIAL_PORT
+        static ring_buffer_pos_t get_tx_buffer_free();
+      #endif
 
       FORCE_INLINE static uint8_t dropped() { return Cfg::DROPPED_RX ? rx_dropped_bytes : 0; }
       FORCE_INLINE static uint8_t buffer_overruns() { return Cfg::RX_OVERRUNS ? rx_buffer_overruns : 0; }
@@ -245,7 +248,7 @@
       static void println(long, int = DEC);
       static void println(unsigned long, int = DEC);
       static void println(double, int = 2);
-      static void println(void);
+      static void println();
       operator bool() { return true; }
 
     private:
@@ -258,12 +261,12 @@
     static constexpr int PORT               = serial;
     static constexpr unsigned int RX_SIZE   = RX_BUFFER_SIZE;
     static constexpr unsigned int TX_SIZE   = TX_BUFFER_SIZE;
-    static constexpr bool XONOFF            = bSERIAL_XON_XOFF;
-    static constexpr bool EMERGENCYPARSER   = bEMERGENCY_PARSER;
-    static constexpr bool DROPPED_RX        = bSERIAL_STATS_DROPPED_RX;
-    static constexpr bool RX_OVERRUNS       = bSERIAL_STATS_RX_BUFFER_OVERRUNS;
-    static constexpr bool RX_FRAMING_ERRORS = bSERIAL_STATS_RX_FRAMING_ERRORS;
-    static constexpr bool MAX_RX_QUEUED     = bSERIAL_STATS_MAX_RX_QUEUED;
+    static constexpr bool XONOFF            = ENABLED(SERIAL_XON_XOFF);
+    static constexpr bool EMERGENCYPARSER   = ENABLED(EMERGENCY_PARSER);
+    static constexpr bool DROPPED_RX        = ENABLED(SERIAL_STATS_DROPPED_RX);
+    static constexpr bool RX_OVERRUNS       = ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS);
+    static constexpr bool RX_FRAMING_ERRORS = ENABLED(SERIAL_STATS_RX_FRAMING_ERRORS);
+    static constexpr bool MAX_RX_QUEUED     = ENABLED(SERIAL_STATS_MAX_RX_QUEUED);
   };
   extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
 
@@ -292,6 +295,40 @@
   extern MarlinSerial<MarlinInternalSerialCfg<INTERNAL_SERIAL_PORT>> internalSerial;
 #endif
 
+#ifdef DGUS_SERIAL_PORT
+  template <uint8_t serial>
+  struct MarlinInternalSerialCfg {
+    static constexpr int PORT               = serial;
+    static constexpr unsigned int RX_SIZE   = DGUS_RX_BUFFER_SIZE;
+    static constexpr unsigned int TX_SIZE   = DGUS_TX_BUFFER_SIZE;
+    static constexpr bool XONOFF            = false;
+    static constexpr bool EMERGENCYPARSER   = false;
+    static constexpr bool DROPPED_RX        = false;
+    static constexpr bool RX_OVERRUNS       = BOTH(HAS_DGUS_LCD, DGUS_SERIAL_STATS_RX_BUFFER_OVERRUNS);
+    static constexpr bool RX_FRAMING_ERRORS = false;
+    static constexpr bool MAX_RX_QUEUED     = false;
+  };
+
+  extern MarlinSerial<MarlinInternalSerialCfg<DGUS_SERIAL_PORT>> internalDgusSerial;
+#endif
+
+#ifdef ANYCUBIC_LCD_SERIAL_PORT
+  template <uint8_t serial>
+  struct AnycubicLcdSerialCfg {
+    static constexpr int PORT               = serial;
+    static constexpr unsigned int RX_SIZE   = 64;
+    static constexpr unsigned int TX_SIZE   = 128;
+    static constexpr bool XONOFF            = false;
+    static constexpr bool EMERGENCYPARSER   = false;
+    static constexpr bool DROPPED_RX        = false;
+    static constexpr bool RX_OVERRUNS       = false;
+    static constexpr bool RX_FRAMING_ERRORS = false;
+    static constexpr bool MAX_RX_QUEUED     = false;
+  };
+
+  extern MarlinSerial<AnycubicLcdSerialCfg<ANYCUBIC_LCD_SERIAL_PORT>> anycubicLcdSerial;
+#endif
+
 // Use the UART for Bluetooth in AT90USB configurations
 #if defined(USBCON) && ENABLED(BLUETOOTH)
   extern HardwareSerial bluetoothSerial;

Marlin/src/HAL/AVR/Servo.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -59,7 +59,6 @@
 
 #include <avr/interrupt.h>
 
-#include "../shared/Marduino.h"
 #include "../shared/servo.h"
 #include "../shared/servo_private.h"
 
@@ -131,7 +130,7 @@ void initISR(timer16_Sequence_t timer) {
       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__)
+      #if defined(__AVR_ATmega8__) || defined(__AVR_ATmega128__)
         SBI(TIFR, OCF1A);      // clear any pending interrupts;
         SBI(TIMSK, OCIE1A);    // enable the output compare interrupt
       #else

Marlin/src/HAL/AVR/ServoTimers.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -53,8 +53,8 @@
  * --------------------
  */
 
-#define TRIM_DURATION       2   // compensation ticks to trim adjust for digitalWrite delays
-#define PRESCALER           8   // timer prescaler
+#define TRIM_DURATION           2   // compensation ticks to trim adjust for digitalWrite delays
+#define SERVO_TIMER_PRESCALER   8   // timer prescaler
 
 // Say which 16 bit timers can be used and in what order
 #if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)

Marlin/src/HAL/AVR/eeprom.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #ifdef __AVR__
@@ -25,9 +25,18 @@
 
 #if EITHER(EEPROM_SETTINGS, SD_FIRMWARE_UPDATE)
 
-#include "../shared/persistent_store_api.h"
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with implementations supplied by the framework.
+ */
 
-bool PersistentStore::access_start() { return true; }
+#include "../shared/eeprom_api.h"
+
+#ifndef MARLIN_EEPROM_SIZE
+  #define MARLIN_EEPROM_SIZE size_t(E2END + 1)
+#endif
+size_t PersistentStore::capacity()    { return MARLIN_EEPROM_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) {
@@ -39,14 +48,14 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
     if (v != eeprom_read_byte(p)) {
       eeprom_write_byte(p, v);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }
     crc16(crc, &v, 1);
     pos++;
     value++;
-  };
+  }
   return false;
 }
 
@@ -61,7 +70,5 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;  // always assume success for AVR's
 }
 
-size_t PersistentStore::capacity() { return E2END + 1; }
-
 #endif // EEPROM_SETTINGS || SD_FIRMWARE_UPDATE
 #endif // __AVR__

Marlin/src/HAL/AVR/endstop_interrupts.h

@@ -0,0 +1,261 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once
+
+/**
+ * Endstop Interrupts
+ *
+ * Without endstop interrupts the endstop pins must be polled continually in
+ * the temperature-ISR via endstops.update(), most of the time finding no change.
+ * With this feature endstops.update() is called only when we know that at
+ * least one endstop has changed state, saving valuable CPU cycles.
+ *
+ * This feature only works when all used endstop pins can generate either an
+ * 'external interrupt' or a 'pin change interrupt'.
+ *
+ * Test whether pins issue interrupts on your board by flashing 'pin_interrupt_test.ino'.
+ * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
+ */
+
+#include "../../module/endstops.h"
+
+#include <stdint.h>
+
+// One ISR for all EXT-Interrupts
+void endstop_ISR() { endstops.update(); }
+
+/**
+ * Patch for pins_arduino.h (...\Arduino\hardware\arduino\avr\variants\mega\pins_arduino.h)
+ *
+ * These macros for the Arduino MEGA do not include the two connected pins on Port J (D14, D15).
+ * So we extend them here because these are the normal pins for Y_MIN and Y_MAX on RAMPS.
+ * There are more PCI-enabled processor pins on Port J, but they are not connected to Arduino MEGA.
+ */
+#if defined(ARDUINO_AVR_MEGA2560) || defined(ARDUINO_AVR_MEGA)
+
+  #define digitalPinHasPCICR(p)   (WITHIN(p, 10, 15) || WITHIN(p, 50, 53) || WITHIN(p, 62, 69))
+
+  #undef  digitalPinToPCICR
+  #define digitalPinToPCICR(p)    (digitalPinHasPCICR(p) ? (&PCICR) : nullptr)
+
+  #undef  digitalPinToPCICRbit
+  #define digitalPinToPCICRbit(p) (WITHIN(p, 10, 13) || WITHIN(p, 50, 53) ? 0 : \
+                                   WITHIN(p, 14, 15) ? 1 : \
+                                   WITHIN(p, 62, 69) ? 2 : \
+                                   0)
+
+  #undef  digitalPinToPCMSK
+  #define digitalPinToPCMSK(p)    (WITHIN(p, 10, 13) || WITHIN(p, 50, 53) ? (&PCMSK0) : \
+                                   WITHIN(p, 14, 15) ? (&PCMSK1) : \
+                                   WITHIN(p, 62, 69) ? (&PCMSK2) : \
+                                   nullptr)
+
+  #undef  digitalPinToPCMSKbit
+  #define digitalPinToPCMSKbit(p) (WITHIN(p, 10, 13) ? ((p) - 6) : \
+                                   (p) == 14 || (p) == 51 ? 2 : \
+                                   (p) == 15 || (p) == 52 ? 1 : \
+                                   (p) == 50 ? 3 : \
+                                   (p) == 53 ? 0 : \
+                                   WITHIN(p, 62, 69) ? ((p) - 62) : \
+                                   0)
+
+#elif defined(__AVR_ATmega164A__) || defined(__AVR_ATmega164P__) || defined(__AVR_ATmega324A__) || \
+      defined(__AVR_ATmega324P__) || defined(__AVR_ATmega324PA__) || defined(__AVR_ATmega324PB__) || \
+      defined(__AVR_ATmega644A__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega1284__) || \
+      defined(__AVR_ATmega1284P__)
+
+  #define digitalPinHasPCICR(p)   WITHIN(p, 0, NUM_DIGITAL_PINS)
+
+#else
+
+  #error "Unsupported AVR variant!"
+
+#endif
+
+
+// Install Pin change interrupt for a pin. Can be called multiple times.
+void pciSetup(const int8_t pin) {
+  if (digitalPinHasPCICR(pin)) {
+    SBI(*digitalPinToPCMSK(pin), digitalPinToPCMSKbit(pin));  // enable pin
+    SBI(PCIFR, digitalPinToPCICRbit(pin)); // clear any outstanding interrupt
+    SBI(PCICR, digitalPinToPCICRbit(pin)); // enable interrupt for the group
+  }
+}
+
+// Handlers for pin change interrupts
+#ifdef PCINT0_vect
+  ISR(PCINT0_vect) { endstop_ISR(); }
+#endif
+
+#ifdef PCINT1_vect
+  ISR(PCINT1_vect, ISR_ALIASOF(PCINT0_vect));
+#endif
+
+#ifdef PCINT2_vect
+  ISR(PCINT2_vect, ISR_ALIASOF(PCINT0_vect));
+#endif
+
+#ifdef PCINT3_vect
+  ISR(PCINT3_vect, ISR_ALIASOF(PCINT0_vect));
+#endif
+
+void setup_endstop_interrupts() {
+  #define _ATTACH(P) attachInterrupt(digitalPinToInterrupt(P), endstop_ISR, CHANGE)
+  #if HAS_X_MAX
+    #if (digitalPinToInterrupt(X_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(X_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(X_MAX_PIN), "X_MAX_PIN is not interrupt-capable");
+      pciSetup(X_MAX_PIN);
+    #endif
+  #endif
+  #if HAS_X_MIN
+    #if (digitalPinToInterrupt(X_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(X_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(X_MIN_PIN), "X_MIN_PIN is not interrupt-capable");
+      pciSetup(X_MIN_PIN);
+    #endif
+  #endif
+  #if HAS_Y_MAX
+    #if (digitalPinToInterrupt(Y_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Y_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Y_MAX_PIN), "Y_MAX_PIN is not interrupt-capable");
+      pciSetup(Y_MAX_PIN);
+    #endif
+  #endif
+  #if HAS_Y_MIN
+    #if (digitalPinToInterrupt(Y_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Y_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Y_MIN_PIN), "Y_MIN_PIN is not interrupt-capable");
+      pciSetup(Y_MIN_PIN);
+    #endif
+  #endif
+  #if HAS_Z_MAX
+    #if (digitalPinToInterrupt(Z_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z_MAX_PIN), "Z_MAX_PIN is not interrupt-capable");
+      pciSetup(Z_MAX_PIN);
+    #endif
+  #endif
+  #if HAS_Z_MIN
+    #if (digitalPinToInterrupt(Z_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z_MIN_PIN), "Z_MIN_PIN is not interrupt-capable");
+      pciSetup(Z_MIN_PIN);
+    #endif
+  #endif
+  #if HAS_X2_MAX
+    #if (digitalPinToInterrupt(X2_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(X2_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(X2_MAX_PIN), "X2_MAX_PIN is not interrupt-capable");
+      pciSetup(X2_MAX_PIN);
+    #endif
+  #endif
+  #if HAS_X2_MIN
+    #if (digitalPinToInterrupt(X2_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(X2_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(X2_MIN_PIN), "X2_MIN_PIN is not interrupt-capable");
+      pciSetup(X2_MIN_PIN);
+    #endif
+  #endif
+  #if HAS_Y2_MAX
+    #if (digitalPinToInterrupt(Y2_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Y2_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Y2_MAX_PIN), "Y2_MAX_PIN is not interrupt-capable");
+      pciSetup(Y2_MAX_PIN);
+    #endif
+  #endif
+  #if HAS_Y2_MIN
+    #if (digitalPinToInterrupt(Y2_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Y2_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Y2_MIN_PIN), "Y2_MIN_PIN is not interrupt-capable");
+      pciSetup(Y2_MIN_PIN);
+    #endif
+  #endif
+  #if HAS_Z2_MAX
+    #if (digitalPinToInterrupt(Z2_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z2_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z2_MAX_PIN), "Z2_MAX_PIN is not interrupt-capable");
+      pciSetup(Z2_MAX_PIN);
+    #endif
+  #endif
+  #if HAS_Z2_MIN
+    #if (digitalPinToInterrupt(Z2_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z2_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z2_MIN_PIN), "Z2_MIN_PIN is not interrupt-capable");
+      pciSetup(Z2_MIN_PIN);
+    #endif
+  #endif
+  #if HAS_Z3_MAX
+    #if (digitalPinToInterrupt(Z3_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z3_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z3_MAX_PIN), "Z3_MAX_PIN is not interrupt-capable");
+      pciSetup(Z3_MAX_PIN);
+    #endif
+  #endif
+  #if HAS_Z3_MIN
+    #if (digitalPinToInterrupt(Z3_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z3_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z3_MIN_PIN), "Z3_MIN_PIN is not interrupt-capable");
+      pciSetup(Z3_MIN_PIN);
+    #endif
+  #endif
+  #if HAS_Z4_MAX
+    #if (digitalPinToInterrupt(Z4_MAX_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z4_MAX_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z4_MAX_PIN), "Z4_MAX_PIN is not interrupt-capable");
+      pciSetup(Z4_MAX_PIN);
+    #endif
+  #endif
+  #if HAS_Z4_MIN
+    #if (digitalPinToInterrupt(Z4_MIN_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z4_MIN_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z4_MIN_PIN), "Z4_MIN_PIN is not interrupt-capable");
+      pciSetup(Z4_MIN_PIN);
+    #endif
+  #endif
+  #if HAS_Z_MIN_PROBE_PIN
+    #if (digitalPinToInterrupt(Z_MIN_PROBE_PIN) != NOT_AN_INTERRUPT)
+      _ATTACH(Z_MIN_PROBE_PIN);
+    #else
+      static_assert(digitalPinHasPCICR(Z_MIN_PROBE_PIN), "Z_MIN_PROBE_PIN is not interrupt-capable");
+      pciSetup(Z_MIN_PROBE_PIN);
+    #endif
+  #endif
+
+  // If we arrive here without raising an assertion, each pin has either an EXT-interrupt or a PCI.
+}

Marlin/src/HAL/AVR/fast_pwm.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,14 +16,14 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #ifdef __AVR__
 
 #include "../../inc/MarlinConfigPre.h"
 
-#if ENABLED(FAST_PWM_FAN)
+#if NEEDS_HARDWARE_PWM // Specific meta-flag for features that mandate PWM
 
 #include "HAL.h"
 
@@ -59,19 +59,19 @@ Timer get_pwm_timer(const pin_t pin) {
       #ifdef TCCR2
         case TIMER2: {
           Timer timer = {
-            /*TCCRnQ*/  { &TCCR2, nullptr, nullptr},
-            /*OCRnQ*/   { (uint16_t*)&OCR2, nullptr, nullptr},
+            /*TCCRnQ*/  { &TCCR2, nullptr, nullptr },
+            /*OCRnQ*/   { (uint16_t*)&OCR2, nullptr, nullptr },
             /*ICRn*/      nullptr,
             /*n, q*/      2, 0
           };
         }
-      #elif defined TCCR2A
+      #elif defined(TCCR2A)
         #if ENABLED(USE_OCR2A_AS_TOP)
           case TIMER2A:   break; // protect TIMER2A
           case TIMER2B: {
             Timer timer = {
-              /*TCCRnQ*/  { &TCCR2A,  &TCCR2B,  nullptr},
-              /*OCRnQ*/   { (uint16_t*)&OCR2A, (uint16_t*)&OCR2B, nullptr},
+              /*TCCRnQ*/  { &TCCR2A,  &TCCR2B,  nullptr },
+              /*OCRnQ*/   { (uint16_t*)&OCR2A, (uint16_t*)&OCR2B, nullptr },
               /*ICRn*/      nullptr,
               /*n, q*/      2, 1
             };
@@ -81,8 +81,8 @@ Timer get_pwm_timer(const pin_t pin) {
           case TIMER2B:   ++q;
           case TIMER2A: {
             Timer timer = {
-              /*TCCRnQ*/  { &TCCR2A,  &TCCR2B,  nullptr},
-              /*OCRnQ*/   { (uint16_t*)&OCR2A, (uint16_t*)&OCR2B, nullptr},
+              /*TCCRnQ*/  { &TCCR2A,  &TCCR2B,  nullptr },
+              /*OCRnQ*/   { (uint16_t*)&OCR2A, (uint16_t*)&OCR2B, nullptr },
               /*ICRn*/      nullptr,
                             2, q
             };
@@ -91,13 +91,24 @@ Timer get_pwm_timer(const pin_t pin) {
         #endif
       #endif
     #endif
-    #ifdef TCCR3A
+    #ifdef OCR3C
       case TIMER3C:   ++q;
       case TIMER3B:   ++q;
       case TIMER3A: {
         Timer timer = {
-          /*TCCRnQ*/  { &TCCR3A,  &TCCR3B,  &TCCR3C},
-          /*OCRnQ*/   { &OCR3A,   &OCR3B,   &OCR3C},
+          /*TCCRnQ*/  { &TCCR3A,  &TCCR3B,  &TCCR3C },
+          /*OCRnQ*/   { &OCR3A,   &OCR3B,   &OCR3C },
+          /*ICRn*/      &ICR3,
+          /*n, q*/      3, q
+        };
+        return timer;
+      }
+    #elif defined(OCR3B)
+      case TIMER3B:   ++q;
+      case TIMER3A: {
+        Timer timer = {
+          /*TCCRnQ*/  { &TCCR3A,  &TCCR3B,  nullptr },
+          /*OCRnQ*/   { &OCR3A,   &OCR3B,  nullptr },
           /*ICRn*/      &ICR3,
           /*n, q*/      3, q
         };
@@ -109,8 +120,8 @@ Timer get_pwm_timer(const pin_t pin) {
       case TIMER4B:   ++q;
       case TIMER4A: {
         Timer timer = {
-          /*TCCRnQ*/  { &TCCR4A,  &TCCR4B,  &TCCR4C},
-          /*OCRnQ*/   { &OCR4A,   &OCR4B,   &OCR4C},
+          /*TCCRnQ*/  { &TCCR4A,  &TCCR4B,  &TCCR4C },
+          /*OCRnQ*/   { &OCR4A,   &OCR4B,   &OCR4C },
           /*ICRn*/      &ICR4,
           /*n, q*/      4, q
         };
@@ -122,7 +133,7 @@ Timer get_pwm_timer(const pin_t pin) {
       case TIMER5B:   ++q;
       case TIMER5A: {
         Timer timer = {
-          /*TCCRnQ*/  { &TCCR5A,  &TCCR5B,  &TCCR5C},
+          /*TCCRnQ*/  { &TCCR5A,  &TCCR5B,  &TCCR5C },
           /*OCRnQ*/   { &OCR5A,   &OCR5B,   &OCR5C },
           /*ICRn*/      &ICR5,
           /*n, q*/      5, q
@@ -132,8 +143,8 @@ Timer get_pwm_timer(const pin_t pin) {
     #endif
   }
   Timer timer = {
-      /*TCCRnQ*/  { nullptr, nullptr, nullptr},
-      /*OCRnQ*/   { nullptr, nullptr, nullptr},
+      /*TCCRnQ*/  { nullptr, nullptr, nullptr },
+      /*OCRnQ*/   { nullptr, nullptr, nullptr },
       /*ICRn*/      nullptr,
                     0, 0
   };
@@ -156,7 +167,7 @@ void set_pwm_frequency(const pin_t pin, int f_desired) {
     uint16_t prescaler[] = { 0, 1, 8, /*TIMER2 ONLY*/32, 64, /*TIMER2 ONLY*/128, 256, 1024 };
 
     // loop over prescaler values
-    for (uint8_t i = 1; i < 8; i++) {
+    LOOP_S_L_N(i, 1, 8) {
       uint16_t res_temp_fast = 255, res_temp_phase_correct = 255;
       if (timer.n == 2) {
         // No resolution calculation for TIMER2 unless enabled USE_OCR2A_AS_TOP
@@ -263,9 +274,9 @@ void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size/*=255
     else
       top = *timer.ICRn; // top = ICRn
 
-    _SET_OCRnQ(timer.OCRnQ, timer.q, v * float(top / v_size)); // Scale 8/16-bit v to top value
+    _SET_OCRnQ(timer.OCRnQ, timer.q, v * float(top) / float(v_size)); // Scale 8/16-bit v to top value
   }
 }
 
-#endif // FAST_PWM_FAN
+#endif // NEEDS_HARDWARE_PWM
 #endif // __AVR__

Marlin/src/HAL/AVR/fastio.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -26,7 +26,7 @@
 
 #ifdef __AVR__
 
-#include "fastio_AVR.h"
+#include "fastio.h"
 
 #ifdef FASTIO_EXT_START
 
@@ -234,5 +234,55 @@ uint8_t extDigitalRead(const int8_t pin) {
   }
 }
 
+#if 0
+/**
+ * Set Timer 5 PWM frequency in Hz, from 3.8Hz up to ~16MHz
+ * with a minimum resolution of 100 steps.
+ *
+ * DC values -1.0 to 1.0. Negative duty cycle inverts the pulse.
+ */
+uint16_t set_pwm_frequency_hz(const float &hz, const float dca, const float dcb, const float dcc) {
+  float count = 0;
+  if (hz > 0 && (dca || dcb || dcc)) {
+    count = float(F_CPU) / hz;            // 1x prescaler, TOP for 16MHz base freq.
+    uint16_t prescaler;                   // Range of 30.5Hz (65535) 64.5KHz (>31)
+
+         if (count >= 255. * 256.) { prescaler = 1024; SET_CS(5, PRESCALER_1024); }
+    else if (count >= 255. * 64.)  { prescaler = 256;  SET_CS(5,  PRESCALER_256); }
+    else if (count >= 255. * 8.)   { prescaler = 64;   SET_CS(5,   PRESCALER_64); }
+    else if (count >= 255.)        { prescaler = 8;    SET_CS(5,    PRESCALER_8); }
+    else                           { prescaler = 1;    SET_CS(5,    PRESCALER_1); }
+
+    count /= float(prescaler);
+    const float pwm_top = round(count);   // Get the rounded count
+
+    ICR5 = (uint16_t)pwm_top - 1;         // Subtract 1 for TOP
+    OCR5A = pwm_top * ABS(dca);          // Update and scale DCs
+    OCR5B = pwm_top * ABS(dcb);
+    OCR5C = pwm_top * ABS(dcc);
+    _SET_COM(5, A, dca ? (dca < 0 ? COM_SET_CLEAR : COM_CLEAR_SET) : COM_NORMAL); // Set compare modes
+    _SET_COM(5, B, dcb ? (dcb < 0 ? COM_SET_CLEAR : COM_CLEAR_SET) : COM_NORMAL);
+    _SET_COM(5, C, dcc ? (dcc < 0 ? COM_SET_CLEAR : COM_CLEAR_SET) : COM_NORMAL);
+
+    SET_WGM(5, FAST_PWM_ICRn);            // Fast PWM with ICR5 as TOP
+
+    //SERIAL_ECHOLNPGM("Timer 5 Settings:");
+    //SERIAL_ECHOLNPAIR("  Prescaler=", prescaler);
+    //SERIAL_ECHOLNPAIR("        TOP=", ICR5);
+    //SERIAL_ECHOLNPAIR("      OCR5A=", OCR5A);
+    //SERIAL_ECHOLNPAIR("      OCR5B=", OCR5B);
+    //SERIAL_ECHOLNPAIR("      OCR5C=", OCR5C);
+  }
+  else {
+    // Restore the default for Timer 5
+    SET_WGM(5, PWM_PC_8);                 // PWM 8-bit (Phase Correct)
+    SET_COMS(5, NORMAL, NORMAL, NORMAL);  // Do nothing
+    SET_CS(5, PRESCALER_64);              // 16MHz / 64 = 250KHz
+    OCR5A = OCR5B = OCR5C = 0;
+  }
+  return round(count);
+}
+#endif
+
 #endif // FASTIO_EXT_START
 #endif // __AVR__

Marlin/src/HAL/AVR/fastio.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -27,8 +27,6 @@
  * Contributed by Triffid_Hunter and modified by Kliment, thinkyhead, Bob-the-Kuhn, et.al.
  */
 
-#include "../../core/macros.h"
-
 #include <avr/io.h>
 
 #define AVR_AT90USB1286_FAMILY (defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1286P__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB646P__) || defined(__AVR_AT90USB647__))
@@ -41,15 +39,15 @@
  * Include Ports and Functions
  */
 #if AVR_ATmega328_FAMILY
-  #include "fastio_168.h"
+  #include "fastio/fastio_168.h"
 #elif AVR_ATmega1284_FAMILY
-  #include "fastio_644.h"
+  #include "fastio/fastio_644.h"
 #elif AVR_ATmega2560_FAMILY
-  #include "fastio_1280.h"
+  #include "fastio/fastio_1280.h"
 #elif AVR_AT90USB1286_FAMILY
-  #include "fastio_AT90USB.h"
+  #include "fastio/fastio_AT90USB.h"
 #elif AVR_ATmega2561_FAMILY
-  #include "fastio_1281.h"
+  #include "fastio/fastio_1281.h"
 #else
   #error "No FastIO definition for the selected AVR Board."
 #endif
@@ -59,7 +57,7 @@
  *
  * Now you can simply SET_OUTPUT(PIN); WRITE(PIN, HIGH); WRITE(PIN, LOW);
  *
- * Why double up on these macros? see http://gcc.gnu.org/onlinedocs/cpp/Stringification.html
+ * Why double up on these macros? see https://gcc.gnu.org/onlinedocs/cpp/Stringification.html
  */
 
 #define _READ(IO)             TEST(DIO ## IO ## _RPORT, DIO ## IO ## _PIN)
@@ -100,9 +98,9 @@
 
 #define SET_INPUT(IO)         _SET_INPUT(IO)
 #define SET_INPUT_PULLUP(IO)  do{ _SET_INPUT(IO); _WRITE(IO, HIGH); }while(0)
+#define SET_INPUT_PULLDOWN    SET_INPUT
 #define SET_OUTPUT(IO)        _SET_OUTPUT(IO)
-
-#define SET_PWM(IO)           SET_OUTPUT(IO)
+#define SET_PWM               SET_OUTPUT
 
 #define IS_INPUT(IO)          _IS_INPUT(IO)
 #define IS_OUTPUT(IO)         _IS_OUTPUT(IO)
@@ -274,19 +272,32 @@ enum ClockSource2 : char {
 #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 harware 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)
 #if PIN_EXISTS(CONTROLLER_FAN)
-  #define PWM_CHK_FAN_B(P) (P == CONTROLLER_FAN_PIN || 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 == CHAMBER_AUTO_FAN_PIN)
+  #define PWM_CHK_FAN_B(P) (_PWM_CHK_FAN_B(P) || P == CONTROLLER_FAN_PIN)
 #else
-  #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 == CHAMBER_AUTO_FAN_PIN)
+  #define PWM_CHK_FAN_B(P) _PWM_CHK_FAN_B(P)
 #endif
 
-#if ANY_PIN(FAN, FAN1, FAN2)
-  #if PIN_EXISTS(FAN2)
+#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)
@@ -337,6 +348,8 @@ enum ClockSource2 : char {
 
 #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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -26,10 +26,10 @@
  *
  *   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 72 75 76 77 74 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
  */
 
-#include "fastio_AVR.h"
+#include "../fastio.h"
 
 // change for your board
 #define DEBUG_LED   DIO21

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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -28,7 +28,7 @@
  *   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
  */
 
-#include "fastio_AVR.h"
+#include "../fastio.h"
 
 // change for your board
 #define DEBUG_LED   DIO46

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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -28,7 +28,7 @@
  *   Port:        B0 B1 B2 B3 B4 B5 C0 C1 C2 C3 C4 C5 C6 C7 D0 D1 D2 D3 D4 D5 D6 D7
  */
 
-#include "fastio_AVR.h"
+#include "../fastio.h"
 
 #define DEBUG_LED   AIO5
 

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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -54,7 +54,7 @@
  *                        +--------+
  */
 
-#include "fastio_AVR.h"
+#include "../fastio.h"
 
 #define DEBUG_LED   DIO0
 

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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -29,7 +29,7 @@
  *            The logical pins 46 and 47 are not supported by Teensyduino, but are supported below as E2 and E3
  */
 
-#include "fastio_AVR.h"
+#include "../fastio.h"
 
 // change for your board
 #define DEBUG_LED   DIO31 /* led D5 red */

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

@@ -0,0 +1,26 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once
+
+#if HAS_SPI_TFT || HAS_FSMC_TFT
+  #error "Sorry! TFT displays are not available for HAL/AVR."
+#endif

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

@@ -0,0 +1,22 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once

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

@@ -0,0 +1,22 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once

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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -25,21 +25,11 @@
  * Test AVR-specific configuration values for errors at compile-time.
  */
 
-/**
- * Digipot requirement
- */
- #if ENABLED(DIGIPOT_MCP4018)
-  #if !defined(DIGIPOTS_I2C_SDA_X) || !defined(DIGIPOTS_I2C_SDA_Y) || !defined(DIGIPOTS_I2C_SDA_Z) \
-    || !defined(DIGIPOTS_I2C_SDA_E0) || !defined(DIGIPOTS_I2C_SDA_E1)
-      #error "DIGIPOT_MCP4018 requires DIGIPOTS_I2C_SDA_* pins to be defined."
-  #endif
-#endif
-
 /**
  * Checks for FAST PWM
  */
 #if ENABLED(FAST_PWM_FAN) && (ENABLED(USE_OCR2A_AS_TOP) && defined(TCCR2))
-    #error "USE_OCR2A_AS_TOP does not apply to devices with a single output TIMER2"
+  #error "USE_OCR2A_AS_TOP does not apply to devices with a single output TIMER2"
 #endif
 
 /**
@@ -51,11 +41,17 @@
   #elif NUM_SERVOS > 0 && (WITHIN(SPINDLE_LASER_PWM_PIN, 2, 3) || SPINDLE_LASER_PWM_PIN == 5)
     #error "Counter/Timer for SPINDLE_LASER_PWM_PIN is used by the servo system."
   #endif
+#elif defined(SPINDLE_LASER_FREQUENCY)
+  #error "SPINDLE_LASER_FREQUENCY requires SPINDLE_LASER_PWM."
 #endif
 
 /**
  * The Trinamic library includes SoftwareSerial.h, leading to a compile error.
  */
-#if HAS_TRINAMIC && ENABLED(ENDSTOP_INTERRUPTS_FEATURE)
+#if BOTH(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)
+  #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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once

Marlin/src/HAL/AVR/pinsDebug.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * 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
@@ -13,7 +13,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -26,7 +26,10 @@
 
 #define NUMBER_PINS_TOTAL NUM_DIGITAL_PINS
 
+#define AVR_ATmega2560_FAMILY_PLUS_70 MB(BQ_ZUM_MEGA_3D, MIGHTYBOARD_REVE, MINIRAMBO, SCOOVO_X9H)
+
 #if AVR_AT90USB1286_FAMILY
+
   // Working with Teensyduino extension so need to re-define some things
   #include "pinsDebug_Teensyduino.h"
   // Can't use the "digitalPinToPort" function from the Teensyduino type IDEs
@@ -35,7 +38,9 @@
   #define digitalPinToBitMask_DEBUG(p) digitalPinToBitMask(p)
   #define digitalPinToPort_DEBUG(p) digitalPinToPort_Teensy(p)
   #define GET_PINMODE(pin) (*portModeRegister(pin) & digitalPinToBitMask_DEBUG(pin))
+
 #elif AVR_ATmega2560_FAMILY_PLUS_70   // So we can access/display all the pins on boards using more than 70
+
   #include "pinsDebug_plus_70.h"
   #define digitalPinToTimer_DEBUG(p) digitalPinToTimer_plus_70(p)
   #define digitalPinToBitMask_DEBUG(p) digitalPinToBitMask_plus_70(p)
@@ -43,11 +48,13 @@
   bool GET_PINMODE(int8_t pin) {return *portModeRegister(digitalPinToPort_DEBUG(pin)) & digitalPinToBitMask_DEBUG(pin); }
 
 #else
+
   #define digitalPinToTimer_DEBUG(p) digitalPinToTimer(p)
   #define digitalPinToBitMask_DEBUG(p) digitalPinToBitMask(p)
   #define digitalPinToPort_DEBUG(p) digitalPinToPort(p)
   bool GET_PINMODE(int8_t pin) {return *portModeRegister(digitalPinToPort_DEBUG(pin)) & digitalPinToBitMask_DEBUG(pin); }
   #define GET_ARRAY_PIN(p) pgm_read_byte(&pin_array[p].pin)
+
 #endif
 
 #define VALID_PIN(pin) (pin >= 0 && pin < NUM_DIGITAL_PINS ? 1 : 0)
@@ -63,12 +70,12 @@
 
 void PRINT_ARRAY_NAME(uint8_t x) {
   char *name_mem_pointer = (char*)pgm_read_ptr(&pin_array[x].name);
-  for (uint8_t y = 0; y < MAX_NAME_LENGTH; y++) {
+  LOOP_L_N(y, MAX_NAME_LENGTH) {
     char temp_char = pgm_read_byte(name_mem_pointer + y);
     if (temp_char != 0)
       SERIAL_CHAR(temp_char);
     else {
-      for (uint8_t i = 0; i < MAX_NAME_LENGTH - y; i++) SERIAL_CHAR(' ');
+      LOOP_L_N(i, MAX_NAME_LENGTH - y) SERIAL_CHAR(' ');
       break;
     }
   }
@@ -224,21 +231,11 @@ 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 com_print(uint8_t N, uint8_t Z) {
+inline void com_print(const uint8_t N, const uint8_t Z) {
   const uint8_t *TCCRA = (uint8_t*)TCCR_A(N);
   SERIAL_ECHOPGM("    COM");
-  SERIAL_CHAR(N + '0');
-  switch (Z) {
-    case 'A':
-      SERIAL_ECHOPAIR("A: ", ((*TCCRA & (_BV(7) | _BV(6))) >> 6));
-      break;
-    case 'B':
-      SERIAL_ECHOPAIR("B: ", ((*TCCRA & (_BV(5) | _BV(4))) >> 4));
-      break;
-    case 'C':
-      SERIAL_ECHOPAIR("C: ", ((*TCCRA & (_BV(3) | _BV(2))) >> 2));
-      break;
-  }
+  SERIAL_CHAR('0' + N, Z);
+  SERIAL_ECHOPAIR(": ", int((*TCCRA >> (6 - Z * 2)) & 0x03));
 }
 
 void timer_prefix(uint8_t T, char L, uint8_t N) {  // T - timer    L - pwm  N - WGM bit layout
@@ -249,8 +246,7 @@ void timer_prefix(uint8_t T, char L, uint8_t N) {  // T - timer    L - pwm  N -
   if (N == 4) WGM |= ((*TCCRB & _BV(WGM_3)) >> 1);
 
   SERIAL_ECHOPGM("    TIMER");
-  SERIAL_CHAR(T + '0');
-  SERIAL_CHAR(L);
+  SERIAL_CHAR(T + '0', L);
   SERIAL_ECHO_SP(3);
 
   if (N == 3) {

Marlin/src/HAL/AVR/pinsDebug_Teensyduino.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * 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
@@ -13,7 +13,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once

Marlin/src/HAL/AVR/pinsDebug_plus_70.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * 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
@@ -13,7 +13,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once

Marlin/src/HAL/AVR/spi_pins.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once

Marlin/src/HAL/AVR/timers.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
  *
  * This program is free software: you can redistribute it and/or modify
@@ -14,46 +14,11 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 #pragma once
 
-#include "../shared/Marduino.h"
-#include "../shared/HAL_SPI.h"
-#include "fastio_AVR.h"
-#include "watchdog_AVR.h"
-#include "math_AVR.h"
-
-#ifdef USBCON
-  #include "HardwareSerial.h"
-#else
-  #define HardwareSerial_h // Hack to prevent HardwareSerial.h header inclusion
-  #include "MarlinSerial.h"
-#endif
-
 #include <stdint.h>
-#include <util/delay.h>
-#include <avr/eeprom.h>
-#include <avr/pgmspace.h>
-#include <avr/interrupt.h>
-#include <avr/io.h>
-
-// ------------------------
-// Defines
-// ------------------------
-
-//#define analogInputToDigitalPin(IO) IO
-
-#ifndef CRITICAL_SECTION_START
-  #define CRITICAL_SECTION_START  unsigned char _sreg = SREG; cli()
-  #define CRITICAL_SECTION_END    SREG = _sreg
-#endif
-#define ISRS_ENABLED() TEST(SREG, SREG_I)
-#define ENABLE_ISRS()  sei()
-#define DISABLE_ISRS() cli()
-
-// On AVR this is in math.h?
-//#define square(x) ((x)*(x))
 
 // ------------------------
 // Types
@@ -62,68 +27,21 @@
 typedef uint16_t hal_timer_t;
 #define HAL_TIMER_TYPE_MAX 0xFFFF
 
-typedef int8_t pin_t;
-
-#define SHARED_SERVOS HAS_SERVOS
-#define HAL_SERVO_LIB Servo
-
 // ------------------------
-// Public Variables
+// Defines
 // ------------------------
 
-//extern uint8_t MCUSR;
-
-// Serial ports
-#ifdef USBCON
-  #if ENABLED(BLUETOOTH)
-    #define MYSERIAL0 bluetoothSerial
-  #else
-    #define MYSERIAL0 Serial
-  #endif
-  #define NUM_SERIAL 1
-#else
-  #if !WITHIN(SERIAL_PORT, -1, 3)
-    #error "SERIAL_PORT must be from -1 to 3"
-  #endif
-
-  #define MYSERIAL0 customizedSerial1
-
-  #ifdef SERIAL_PORT_2
-    #if !WITHIN(SERIAL_PORT_2, -1, 3)
-      #error "SERIAL_PORT_2 must be from -1 to 3"
-    #elif SERIAL_PORT_2 == SERIAL_PORT
-      #error "SERIAL_PORT_2 must be different than SERIAL_PORT"
-    #endif
-    #define NUM_SERIAL 2
-    #define MYSERIAL1 customizedSerial2
-  #else
-    #define NUM_SERIAL 1
-  #endif
-#endif
-
-// ------------------------
-// Public functions
-// ------------------------
-
-void HAL_init(void);
-
-//void cli(void);
-
-//void _delay_ms(const int delay);
-
-inline void HAL_clear_reset_source(void) { MCUSR = 0; }
-inline uint8_t HAL_get_reset_source(void) { return MCUSR; }
-
-extern "C" {
-  int freeMemory(void);
-}
-
-// timers
 #define HAL_TIMER_RATE          ((F_CPU) / 8)    // i.e., 2MHz or 2.5MHz
 
-#define STEP_TIMER_NUM          1
-#define TEMP_TIMER_NUM          0
-#define PULSE_TIMER_NUM         STEP_TIMER_NUM
+#ifndef STEP_TIMER_NUM
+  #define STEP_TIMER_NUM        1
+#endif
+#ifndef PULSE_TIMER_NUM
+  #define PULSE_TIMER_NUM       STEP_TIMER_NUM
+#endif
+#ifndef TEMP_TIMER_NUM
+  #define TEMP_TIMER_NUM        0
+#endif
 
 #define TEMP_TIMER_FREQUENCY    ((F_CPU) / 64.0 / 256.0)
 
@@ -143,8 +61,7 @@ extern "C" {
 #define DISABLE_TEMPERATURE_INTERRUPT()    CBI(TIMSK0, OCIE0B)
 #define TEMPERATURE_ISR_ENABLED()         TEST(TIMSK0, OCIE0B)
 
-FORCE_INLINE void HAL_timer_start(const uint8_t timer_num, const uint32_t frequency) {
-  UNUSED(frequency);
+FORCE_INLINE void HAL_timer_start(const uint8_t timer_num, const uint32_t) {
   switch (timer_num) {
     case STEP_TIMER_NUM:
       // waveform generation = 0100 = CTC
@@ -195,10 +112,12 @@ FORCE_INLINE void HAL_timer_start(const uint8_t timer_num, const uint32_t freque
 #define HAL_timer_isr_epilogue(TIMER_NUM)
 
 /* 18 cycles maximum latency */
+#ifndef HAL_STEP_TIMER_ISR
+
 #define HAL_STEP_TIMER_ISR() \
-extern "C" void TIMER1_COMPA_vect (void) __attribute__ ((signal, naked, used, externally_visible)); \
-extern "C" void TIMER1_COMPA_vect_bottom (void) asm ("TIMER1_COMPA_vect_bottom") __attribute__ ((used, externally_visible, noinline)); \
-void TIMER1_COMPA_vect (void) { \
+extern "C" void TIMER1_COMPA_vect() __attribute__ ((signal, naked, used, externally_visible)); \
+extern "C" void TIMER1_COMPA_vect_bottom() asm ("TIMER1_COMPA_vect_bottom") __attribute__ ((used, externally_visible, noinline)); \
+void TIMER1_COMPA_vect() { \
   __asm__ __volatile__ ( \
     A("push r16")                      /* 2 Save R16 */ \
     A("in r16, __SREG__")              /* 1 Get SREG */ \
@@ -265,13 +184,17 @@ void TIMER1_COMPA_vect (void) { \
     : \
   ); \
 } \
-void TIMER1_COMPA_vect_bottom(void)
+void TIMER1_COMPA_vect_bottom()
+
+#endif // HAL_STEP_TIMER_ISR
+
+#ifndef HAL_TEMP_TIMER_ISR
 
 /* 14 cycles maximum latency */
 #define HAL_TEMP_TIMER_ISR() \
-extern "C" void TIMER0_COMPB_vect (void) __attribute__ ((signal, naked, used, externally_visible)); \
-extern "C" void TIMER0_COMPB_vect_bottom(void)  asm ("TIMER0_COMPB_vect_bottom") __attribute__ ((used, externally_visible, noinline)); \
-void TIMER0_COMPB_vect (void) { \
+extern "C" void TIMER0_COMPB_vect() __attribute__ ((signal, naked, used, externally_visible)); \
+extern "C" void TIMER0_COMPB_vect_bottom()  asm ("TIMER0_COMPB_vect_bottom") __attribute__ ((used, externally_visible, noinline)); \
+void TIMER0_COMPB_vect() { \
   __asm__ __volatile__ ( \
     A("push r16")                       /* 2 Save R16 */ \
     A("in r16, __SREG__")               /* 1 Get SREG */ \
@@ -331,61 +254,6 @@ void TIMER0_COMPB_vect (void) { \
     : \
   ); \
 } \
-void TIMER0_COMPB_vect_bottom(void)
+void TIMER0_COMPB_vect_bottom()
 
-// ADC
-#ifdef DIDR2
-  #define HAL_ANALOG_SELECT(pin) do{ if (pin < 8) SBI(DIDR0, pin); else SBI(DIDR2, pin & 0x07); }while(0)
-#else
-  #define HAL_ANALOG_SELECT(pin) do{ SBI(DIDR0, pin); }while(0)
-#endif
-
-inline void HAL_adc_init(void) {
-  ADCSRA = _BV(ADEN) | _BV(ADSC) | _BV(ADIF) | 0x07;
-  DIDR0 = 0;
-  #ifdef DIDR2
-    DIDR2 = 0;
-  #endif
-}
-
-#define SET_ADMUX_ADCSRA(pin) ADMUX = _BV(REFS0) | (pin & 0x07); SBI(ADCSRA, ADSC)
-#ifdef MUX5
-  #define HAL_START_ADC(pin) if (pin > 7) ADCSRB = _BV(MUX5); else ADCSRB = 0; SET_ADMUX_ADCSRA(pin)
-#else
-  #define HAL_START_ADC(pin) ADCSRB = 0; SET_ADMUX_ADCSRA(pin)
-#endif
-
-#define HAL_READ_ADC()  ADC
-#define HAL_ADC_READY() !TEST(ADCSRA, ADSC)
-
-#define GET_PIN_MAP_PIN(index) index
-#define GET_PIN_MAP_INDEX(pin) pin
-#define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
-
-#define HAL_SENSITIVE_PINS 0, 1
-
-#ifdef __AVR_AT90USB1286__
-  #define JTAG_DISABLE() do{ MCUCR = 0x80; MCUCR = 0x80; }while(0)
-#endif
-
-// AVR compatibility
-#define strtof strtod
-
-/**
- *  set_pwm_frequency
- *  Sets the frequency of the timer corresponding to the provided pin
- *  as close as possible to the provided desired frequency. Internally
- *  calculates the required waveform generation mode, prescaler and
- *  resolution values required and sets the timer registers accordingly.
- *  NOTE that the frequency is applied to all pins on the timer (Ex OC3A, OC3B and OC3B)
- *  NOTE that there are limitations, particularly if using TIMER2. (see Configuration_adv.h -> FAST FAN PWM Settings)
- */
-void set_pwm_frequency(const pin_t pin, int f_desired);
-
-/**
- * set_pwm_duty
- *  Sets the PWM duty cycle of the provided pin to the provided value
- *  Optionally allows inverting the duty cycle [default = false]
- *  Optionally allows changing the maximum size of the provided value to enable finer PWM duty control [default = 255]
- */
-void set_pwm_duty(const pin_t pin, const uint16_t v, const uint16_t v_size=255, const bool invert=false);
+#endif // HAL_TEMP_TIMER_ISR

Marlin/src/HAL/AVR/u8g_com_HAL_AVR_sw_spi.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -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();
-  for (uint8_t i = 0; i < 8; i++) {
+  LOOP_L_N(i, 8) {
     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();
-  for (uint8_t i = 0; i < 8; i++) {
+  LOOP_L_N(i, 8) {
     *outClock &= bitNotClock;
     if (val & 0x80)
       *outData |= bitData;

Marlin/src/HAL/AVR/watchdog.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,19 +16,18 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
-
 #ifdef __AVR__
 
 #include "../../inc/MarlinConfig.h"
 
 #if ENABLED(USE_WATCHDOG)
 
-#include "watchdog_AVR.h"
+#include "watchdog.h"
 
-#include "../../Marlin.h"
+#include "../../MarlinCore.h"
 
 // Initialize watchdog with 8s timeout, if possible. Otherwise, make it 4s.
 void watchdog_init() {
@@ -62,7 +61,7 @@ void watchdog_init() {
 #if ENABLED(WATCHDOG_RESET_MANUAL)
   ISR(WDT_vect) {
     sei();  // With the interrupt driven serial we need to allow interrupts.
-    SERIAL_ERROR_MSG(MSG_WATCHDOG_FIRED);
+    SERIAL_ERROR_MSG(STR_WATCHDOG_FIRED);
     minkill();  // interrupt-safe final kill and infinite loop
   }
 #endif

Marlin/src/HAL/AVR/watchdog.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -28,4 +28,4 @@ void watchdog_init();
 
 // Reset watchdog. MUST be called at least every 4 seconds after the
 // first watchdog_init or AVR will go into emergency procedures.
-inline void watchdog_reset() { wdt_reset(); }
+inline void HAL_watchdog_refresh() { wdt_reset(); }

Marlin/src/HAL/DUE/DebugMonitor.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,10 +16,9 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
-
 #ifdef ARDUINO_ARCH_SAM
 
 #include "../../core/macros.h"
@@ -42,7 +41,7 @@
 #define sw_barrier() __asm__ volatile("": : :"memory");
 
 // (re)initialize UART0 as a monitor output to 250000,n,8,1
-static void TXBegin(void) {
+static void TXBegin() {
 
   // Disable UART interrupt in NVIC
   NVIC_DisableIRQ( UART_IRQn );
@@ -235,7 +234,7 @@ void HardFault_HandlerC(unsigned long *sp, unsigned long lr, unsigned long cause
   for (;;) WDT_Restart(WDT);
 }
 
-__attribute__((naked)) void NMI_Handler(void) {
+__attribute__((naked)) void NMI_Handler() {
   __asm__ __volatile__ (
     ".syntax unified" "\n\t"
     A("tst lr, #4")
@@ -248,7 +247,7 @@ __attribute__((naked)) void NMI_Handler(void) {
   );
 }
 
-__attribute__((naked)) void HardFault_Handler(void) {
+__attribute__((naked)) void HardFault_Handler() {
   __asm__ __volatile__ (
     ".syntax unified" "\n\t"
     A("tst lr, #4")
@@ -261,7 +260,7 @@ __attribute__((naked)) void HardFault_Handler(void) {
   );
 }
 
-__attribute__((naked)) void MemManage_Handler(void) {
+__attribute__((naked)) void MemManage_Handler() {
   __asm__ __volatile__ (
     ".syntax unified" "\n\t"
     A("tst lr, #4")
@@ -274,7 +273,7 @@ __attribute__((naked)) void MemManage_Handler(void) {
   );
 }
 
-__attribute__((naked)) void BusFault_Handler(void) {
+__attribute__((naked)) void BusFault_Handler() {
   __asm__ __volatile__ (
     ".syntax unified" "\n\t"
     A("tst lr, #4")
@@ -287,7 +286,7 @@ __attribute__((naked)) void BusFault_Handler(void) {
   );
 }
 
-__attribute__((naked)) void UsageFault_Handler(void) {
+__attribute__((naked)) void UsageFault_Handler() {
   __asm__ __volatile__ (
     ".syntax unified" "\n\t"
     A("tst lr, #4")
@@ -300,7 +299,7 @@ __attribute__((naked)) void UsageFault_Handler(void) {
   );
 }
 
-__attribute__((naked)) void DebugMon_Handler(void) {
+__attribute__((naked)) void DebugMon_Handler() {
   __asm__ __volatile__ (
     ".syntax unified" "\n\t"
     A("tst lr, #4")
@@ -314,7 +313,7 @@ __attribute__((naked)) void DebugMon_Handler(void) {
 }
 
 /* This is NOT an exception, it is an interrupt handler - Nevertheless, the framing is the same */
-__attribute__((naked)) void WDT_Handler(void) {
+__attribute__((naked)) void WDT_Handler() {
   __asm__ __volatile__ (
     ".syntax unified" "\n\t"
     A("tst lr, #4")
@@ -327,7 +326,7 @@ __attribute__((naked)) void WDT_Handler(void) {
   );
 }
 
-__attribute__((naked)) void RSTC_Handler(void) {
+__attribute__((naked)) void RSTC_Handler() {
   __asm__ __volatile__ (
     ".syntax unified" "\n\t"
     A("tst lr, #4")

Marlin/src/HAL/DUE/HAL.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
  *
  * This program is free software: you can redistribute it and/or modify
@@ -14,7 +14,8 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
  */
 
 /**
@@ -42,7 +43,7 @@ uint16_t HAL_adc_result;
 // ------------------------
 
 // HAL initialization task
-void HAL_init(void) {
+void HAL_init() {
   // Initialize the USB stack
   #if ENABLED(SDSUPPORT)
     OUT_WRITE(SDSS, HIGH);  // Try to set SDSS inactive before any other SPI users start up
@@ -51,20 +52,20 @@ void HAL_init(void) {
 }
 
 // HAL idle task
-void HAL_idletask(void) {
+void HAL_idletask() {
   // Perform USB stack housekeeping
   usb_task_idle();
 }
 
 // Disable interrupts
-void cli(void) { noInterrupts(); }
+void cli() { noInterrupts(); }
 
 // Enable interrupts
-void sei(void) { interrupts(); }
+void sei() { interrupts(); }
 
-void HAL_clear_reset_source(void) { }
+void HAL_clear_reset_source() { }
 
-uint8_t HAL_get_reset_source(void) {
+uint8_t HAL_get_reset_source() {
   switch ((RSTC->RSTC_SR >> 8) & 0x07) {
     case 0: return RST_POWER_ON;
     case 1: return RST_BACKUP;
@@ -87,18 +88,18 @@ extern "C" {
 // Return free memory between end of heap (or end bss) and whatever is current
 int freeMemory() {
   int free_memory, heap_end = (int)_sbrk(0);
-  return (int)&free_memory - (heap_end ? heap_end : (int)&_ebss);
+  return (int)&free_memory - (heap_end ?: (int)&_ebss);
 }
 
 // ------------------------
 // ADC
 // ------------------------
 
-void HAL_adc_start_conversion(const uint8_t adc_pin) {
-  HAL_adc_result = analogRead(adc_pin);
+void HAL_adc_start_conversion(const uint8_t ch) {
+  HAL_adc_result = analogRead(ch);
 }
 
-uint16_t HAL_adc_get_result(void) {
+uint16_t HAL_adc_get_result() {
   // nop
   return HAL_adc_result;
 }

Marlin/src/HAL/DUE/HAL.h

@@ -0,0 +1,190 @@
+/**
+ * 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
+ *
+ * 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
+
+/**
+ * Description: HAL for Arduino Due and compatible (SAM3X8E)
+ *
+ * For ARDUINO_ARCH_SAM
+ */
+
+#define CPU_32_BIT
+
+#include "../shared/Marduino.h"
+#include "../shared/eeprom_if.h"
+#include "../shared/math_32bit.h"
+#include "../shared/HAL_SPI.h"
+#include "fastio.h"
+#include "watchdog.h"
+
+#include <stdint.h>
+
+// Define MYSERIAL0/1 before MarlinSerial includes!
+#if SERIAL_PORT == -1 || ENABLED(EMERGENCY_PARSER)
+  #define MYSERIAL0 customizedSerial1
+#elif SERIAL_PORT == 0
+  #define MYSERIAL0 Serial
+#elif SERIAL_PORT == 1
+  #define MYSERIAL0 Serial1
+#elif SERIAL_PORT == 2
+  #define MYSERIAL0 Serial2
+#elif SERIAL_PORT == 3
+  #define MYSERIAL0 Serial3
+#else
+  #error "The required SERIAL_PORT must be from -1 to 3. Please update your configuration."
+#endif
+
+#ifdef SERIAL_PORT_2
+  #if SERIAL_PORT_2 == SERIAL_PORT
+    #error "SERIAL_PORT_2 must be different from SERIAL_PORT. Please update your configuration."
+  #elif SERIAL_PORT_2 == -1 || ENABLED(EMERGENCY_PARSER)
+    #define MYSERIAL1 customizedSerial2
+  #elif SERIAL_PORT_2 == 0
+    #define MYSERIAL1 Serial
+  #elif SERIAL_PORT_2 == 1
+    #define MYSERIAL1 Serial1
+  #elif SERIAL_PORT_2 == 2
+    #define MYSERIAL1 Serial2
+  #elif SERIAL_PORT_2 == 3
+    #define MYSERIAL1 Serial3
+  #else
+    #error "SERIAL_PORT_2 must be from -1 to 3. Please update your configuration."
+  #endif
+  #define NUM_SERIAL 2
+#else
+  #define NUM_SERIAL 1
+#endif
+
+#ifdef DGUS_SERIAL_PORT
+  #if DGUS_SERIAL_PORT == SERIAL_PORT
+    #error "DGUS_SERIAL_PORT must be different from SERIAL_PORT. Please update your configuration."
+  #elif defined(SERIAL_PORT_2) && DGUS_SERIAL_PORT == SERIAL_PORT_2
+    #error "DGUS_SERIAL_PORT must be different than SERIAL_PORT_2. Please update your configuration."
+  #elif DGUS_SERIAL_PORT == -1
+    #define DGUS_SERIAL internalDgusSerial
+  #elif DGUS_SERIAL_PORT == 0
+    #define DGUS_SERIAL Serial
+  #elif DGUS_SERIAL_PORT == 1
+    #define DGUS_SERIAL Serial1
+  #elif DGUS_SERIAL_PORT == 2
+    #define DGUS_SERIAL Serial2
+  #elif DGUS_SERIAL_PORT == 3
+    #define DGUS_SERIAL Serial3
+  #else
+    #error "DGUS_SERIAL_PORT must be from -1 to 3. Please update your configuration."
+  #endif
+#endif
+
+#include "MarlinSerial.h"
+#include "MarlinSerialUSB.h"
+
+// On AVR this is in math.h?
+#define square(x) ((x)*(x))
+
+#ifndef strncpy_P
+  #define strncpy_P(dest, src, num) strncpy((dest), (src), (num))
+#endif
+
+// Fix bug in pgm_read_ptr
+#undef pgm_read_ptr
+#define pgm_read_ptr(addr) (*((void**)(addr)))
+#undef pgm_read_word
+#define pgm_read_word(addr) (*((uint16_t*)(addr)))
+
+typedef int8_t pin_t;
+
+#define SHARED_SERVOS HAS_SERVOS
+#define HAL_SERVO_LIB Servo
+
+//
+// Interrupts
+//
+#define CRITICAL_SECTION_START()  uint32_t primask = __get_PRIMASK(); __disable_irq()
+#define CRITICAL_SECTION_END()    if (!primask) __enable_irq()
+#define ISRS_ENABLED() (!__get_PRIMASK())
+#define ENABLE_ISRS()  __enable_irq()
+#define DISABLE_ISRS() __disable_irq()
+
+void cli();                     // Disable interrupts
+void sei();                     // Enable interrupts
+
+void HAL_clear_reset_source();  // clear reset reason
+uint8_t HAL_get_reset_source(); // get reset reason
+
+//
+// ADC
+//
+extern uint16_t HAL_adc_result;     // result of last ADC conversion
+
+#ifndef analogInputToDigitalPin
+  #define analogInputToDigitalPin(p) ((p < 12u) ? (p) + 54u : -1)
+#endif
+
+#define HAL_ANALOG_SELECT(ch)
+
+inline void HAL_adc_init() {}//todo
+
+#define HAL_ADC_VREF         3.3
+#define HAL_ADC_RESOLUTION  10
+#define HAL_START_ADC(ch)   HAL_adc_start_conversion(ch)
+#define HAL_READ_ADC()      HAL_adc_result
+#define HAL_ADC_READY()     true
+
+void HAL_adc_start_conversion(const uint8_t ch);
+uint16_t HAL_adc_get_result();
+
+//
+// Pin Map
+//
+#define GET_PIN_MAP_PIN(index) index
+#define GET_PIN_MAP_INDEX(pin) pin
+#define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)
+
+//
+// Tone
+//
+void toneInit();
+void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration=0);
+void noTone(const pin_t _pin);
+
+// Enable hooks into idle and setup for HAL
+#define HAL_IDLETASK 1
+void HAL_idletask();
+void HAL_init();
+
+//
+// Utility functions
+//
+void _delay_ms(const int delay);
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-function"
+int freeMemory();
+#pragma GCC diagnostic pop
+
+#ifdef __cplusplus
+  extern "C" {
+#endif
+char *dtostrf(double __val, signed char __width, unsigned char __prec, char *__s);
+#ifdef __cplusplus
+  }
+#endif

Marlin/src/HAL/DUE/HAL_SPI.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -151,13 +151,12 @@
     (((uint32_t)(addr) & 0xF0000000) + 0x02000000 + ((uint32_t)(addr)&0xFFFFF)*32 + (bit)*4)
 
   // run at ~8 .. ~10Mhz - Rx version (Tx line not altered)
-  static uint8_t spiTransferRx0(uint8_t bout) { // using Mode 0
+  static uint8_t spiTransferRx0(uint8_t) { // using Mode 0
     uint32_t bin = 0;
     uint32_t work = 0;
     uint32_t BITBAND_MISO_PORT = BITBAND_ADDRESS( ((uint32_t)PORT(MISO_PIN))+0x3C, PIN_SHIFT(MISO_PIN));  /* PDSR of port in bitband area */
     uint32_t SCK_PORT_PLUS30 = ((uint32_t) PORT(SCK_PIN)) + 0x30;    /* SODR of port */
     uint32_t SCK_MASK = PIN_MASK(SCK_PIN);
-    UNUSED(bout);
 
     /* The software SPI routine */
     __asm__ __volatile__(
@@ -241,7 +240,7 @@
   }
 
   // all the others
-  static uint32_t spiDelayCyclesX4 = (F_CPU) / 1000000; // 4uS => 125khz
+  static uint32_t spiDelayCyclesX4 = (F_CPU) / 1000000; // 4µs => 125khz
 
   static uint8_t spiTransferX(uint8_t b) { // using Mode 0
     int bits = 8;
@@ -428,7 +427,7 @@
 
   static void spiTxBlockX(const uint8_t* buf, uint32_t todo) {
     do {
-      (void) spiTransferTx(*buf++);
+      (void)spiTransferTx(*buf++);
     } while (--todo);
   }
 

Marlin/src/HAL/DUE/InterruptVectors.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -34,7 +34,7 @@
 
 #include "../../inc/MarlinConfig.h"
 #include "HAL.h"
-#include "InterruptVectors_Due.h"
+#include "InterruptVectors.h"
 
 /* The relocated Exception/Interrupt Table - According to the ARM
    reference manual, alignment to 128 bytes should suffice, but in
@@ -48,7 +48,7 @@ static DeviceVectors ram_tab = { nullptr };
  * If it is not, then it copies the ROM table to the SRAM and relocates the table
  * by reprogramming the NVIC registers
  */
-static pfnISR_Handler* get_relocated_table_addr(void) {
+static pfnISR_Handler* get_relocated_table_addr() {
   // Get the address of the interrupt/exception table
   uint32_t isrtab = SCB->VTOR;
 
@@ -63,13 +63,13 @@ static pfnISR_Handler* get_relocated_table_addr(void) {
   memcpy(&ram_tab, romtab, sizeof(ram_tab));
 
   // Disable global interrupts
-  CRITICAL_SECTION_START;
+  CRITICAL_SECTION_START();
 
   // Set the vector table base address to the SRAM copy
   SCB->VTOR = (uint32_t)(&ram_tab);
 
   // Reenable interrupts
-  CRITICAL_SECTION_END;
+  CRITICAL_SECTION_END();
 
   // Return the address of the table
   return (pfnISR_Handler*)(&ram_tab);
@@ -80,7 +80,7 @@ pfnISR_Handler install_isr(IRQn_Type irq, pfnISR_Handler newHandler) {
   pfnISR_Handler *isrtab = get_relocated_table_addr();
 
   // Disable global interrupts
-  CRITICAL_SECTION_START;
+  CRITICAL_SECTION_START();
 
   // Get the original handler
   pfnISR_Handler oldHandler = isrtab[irq + 16];
@@ -89,7 +89,7 @@ pfnISR_Handler install_isr(IRQn_Type irq, pfnISR_Handler newHandler) {
   isrtab[irq + 16] = newHandler;
 
   // Reenable interrupts
-  CRITICAL_SECTION_END;
+  CRITICAL_SECTION_END();
 
   // Return the original one
   return oldHandler;

Marlin/src/HAL/DUE/InterruptVectors.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -37,7 +37,7 @@
 #ifdef ARDUINO_ARCH_SAM
 
 // ISR handler type
-typedef void (*pfnISR_Handler)(void);
+typedef void (*pfnISR_Handler)();
 
 // Install a new interrupt vector handler for the given irq, returning the old one
 pfnISR_Handler install_isr(IRQn_Type irq, pfnISR_Handler newHandler);

Marlin/src/HAL/DUE/MarlinSerial.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -29,9 +29,9 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#include "MarlinSerial_Due.h"
-#include "InterruptVectors_Due.h"
-#include "../../Marlin.h"
+#include "MarlinSerial.h"
+#include "InterruptVectors.h"
+#include "../../MarlinCore.h"
 
 template<typename Cfg> typename MarlinSerial<Cfg>::ring_buffer_r MarlinSerial<Cfg>::rx_buffer = { 0, 0, { 0 } };
 template<typename Cfg> typename MarlinSerial<Cfg>::ring_buffer_t MarlinSerial<Cfg>::tx_buffer = { 0 };
@@ -45,7 +45,7 @@ template<typename Cfg> typename MarlinSerial<Cfg>::ring_buffer_pos_t MarlinSeria
 // A SW memory barrier, to ensure GCC does not overoptimize loops
 #define sw_barrier() asm volatile("": : :"memory");
 
-#include "../../feature/emergency_parser.h"
+#include "../../feature/e_parser.h"
 
 // (called with RX interrupts disabled)
 template<typename Cfg>
@@ -178,7 +178,7 @@ FORCE_INLINE void MarlinSerial<Cfg>::store_rxd_char() {
 }
 
 template<typename Cfg>
-FORCE_INLINE void MarlinSerial<Cfg>::_tx_thr_empty_irq(void) {
+FORCE_INLINE void MarlinSerial<Cfg>::_tx_thr_empty_irq() {
   if (Cfg::TX_SIZE > 0) {
     // Read positions
     uint8_t t = tx_buffer.tail;
@@ -221,7 +221,7 @@ FORCE_INLINE void MarlinSerial<Cfg>::_tx_thr_empty_irq(void) {
 }
 
 template<typename Cfg>
-void MarlinSerial<Cfg>::UART_ISR(void) {
+void MarlinSerial<Cfg>::UART_ISR() {
   const uint32_t status = HWUART->UART_SR;
 
   // Data received?
@@ -308,13 +308,13 @@ void MarlinSerial<Cfg>::end() {
 }
 
 template<typename Cfg>
-int MarlinSerial<Cfg>::peek(void) {
+int MarlinSerial<Cfg>::peek() {
   const int v = rx_buffer.head == rx_buffer.tail ? -1 : rx_buffer.buffer[rx_buffer.tail];
   return v;
 }
 
 template<typename Cfg>
-int MarlinSerial<Cfg>::read(void) {
+int MarlinSerial<Cfg>::read() {
 
   const ring_buffer_pos_t h = rx_buffer.head;
   ring_buffer_pos_t t = rx_buffer.tail;
@@ -354,13 +354,13 @@ int MarlinSerial<Cfg>::read(void) {
 }
 
 template<typename Cfg>
-typename MarlinSerial<Cfg>::ring_buffer_pos_t MarlinSerial<Cfg>::available(void) {
+typename MarlinSerial<Cfg>::ring_buffer_pos_t MarlinSerial<Cfg>::available() {
   const ring_buffer_pos_t h = rx_buffer.head, t = rx_buffer.tail;
   return (ring_buffer_pos_t)(Cfg::RX_SIZE + h - t) & (Cfg::RX_SIZE - 1);
 }
 
 template<typename Cfg>
-void MarlinSerial<Cfg>::flush(void) {
+void MarlinSerial<Cfg>::flush() {
   rx_buffer.tail = rx_buffer.head;
 
   if (Cfg::XONOFF) {
@@ -431,7 +431,7 @@ void MarlinSerial<Cfg>::write(const uint8_t c) {
 }
 
 template<typename Cfg>
-void MarlinSerial<Cfg>::flushTX(void) {
+void MarlinSerial<Cfg>::flushTX() {
   // TX
 
   if (Cfg::TX_SIZE == 0) {
@@ -520,7 +520,7 @@ void MarlinSerial<Cfg>::print(double n, int digits) {
 }
 
 template<typename Cfg>
-void MarlinSerial<Cfg>::println(void) {
+void MarlinSerial<Cfg>::println() {
   print('\r');
   print('\n');
 }
@@ -606,7 +606,7 @@ void MarlinSerial<Cfg>::printFloat(double number, uint8_t digits) {
 
   // Round correctly so that print(1.999, 2) prints as "2.00"
   double rounding = 0.5;
-  for (uint8_t i = 0; i < digits; ++i) rounding *= 0.1;
+  LOOP_L_N(i, digits) rounding *= 0.1;
   number += rounding;
 
   // Extract the integer part of the number and print it
@@ -629,23 +629,13 @@ void MarlinSerial<Cfg>::printFloat(double number, uint8_t digits) {
 
 // If not using the USB port as serial port
 #if SERIAL_PORT >= 0
-
-  // Preinstantiate
-  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT>>;
-
-  // Instantiate
-  MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
-
+  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT>>;      // Define
+  MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;   // Instantiate
 #endif
 
-#ifdef SERIAL_PORT_2
-
-  // Preinstantiate
-  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>>;
-
-  // Instantiate
-  MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
-
+#if defined(SERIAL_PORT_2) && SERIAL_PORT_2 >= 0
+  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>>;    // Define
+  MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2; // Instantiate
 #endif
 
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/MarlinSerial.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -27,10 +27,10 @@
  * Based on MarlinSerial for AVR, copyright (c) 2006 Nicholas Zambetti.  All right reserved.
  */
 
-#include "../shared/MarlinSerial.h"
-
 #include <WString.h>
 
+#include "../../inc/MarlinConfigPre.h"
+
 #define DEC 10
 #define HEX 16
 #define OCT 8
@@ -108,19 +108,19 @@ protected:
   static ring_buffer_pos_t rx_max_enqueued;
 
   FORCE_INLINE static void store_rxd_char();
-  FORCE_INLINE static void _tx_thr_empty_irq(void);
-  static void UART_ISR(void);
+  FORCE_INLINE static void _tx_thr_empty_irq();
+  static void UART_ISR();
 
 public:
   MarlinSerial() {};
   static void begin(const long);
   static void end();
-  static int peek(void);
-  static int read(void);
-  static void flush(void);
-  static ring_buffer_pos_t available(void);
+  static int peek();
+  static int read();
+  static void flush();
+  static ring_buffer_pos_t available();
   static void write(const uint8_t c);
-  static void flushTX(void);
+  static void flushTX();
 
   FORCE_INLINE static uint8_t dropped() { return Cfg::DROPPED_RX ? rx_dropped_bytes : 0; }
   FORCE_INLINE static uint8_t buffer_overruns() { return Cfg::RX_OVERRUNS ? rx_buffer_overruns : 0; }
@@ -149,7 +149,7 @@ public:
   static void println(long, int = DEC);
   static void println(unsigned long, int = DEC);
   static void println(double, int = 2);
-  static void println(void);
+  static void println();
   operator bool() { return true; }
 
 private:
@@ -163,22 +163,18 @@ struct MarlinSerialCfg {
   static constexpr int PORT               = serial;
   static constexpr unsigned int RX_SIZE   = RX_BUFFER_SIZE;
   static constexpr unsigned int TX_SIZE   = TX_BUFFER_SIZE;
-  static constexpr bool XONOFF            = bSERIAL_XON_XOFF;
-  static constexpr bool EMERGENCYPARSER   = bEMERGENCY_PARSER;
-  static constexpr bool DROPPED_RX        = bSERIAL_STATS_DROPPED_RX;
-  static constexpr bool RX_OVERRUNS       = bSERIAL_STATS_RX_BUFFER_OVERRUNS;
-  static constexpr bool RX_FRAMING_ERRORS = bSERIAL_STATS_RX_FRAMING_ERRORS;
-  static constexpr bool MAX_RX_QUEUED     = bSERIAL_STATS_MAX_RX_QUEUED;
+  static constexpr bool XONOFF            = ENABLED(SERIAL_XON_XOFF);
+  static constexpr bool EMERGENCYPARSER   = ENABLED(EMERGENCY_PARSER);
+  static constexpr bool DROPPED_RX        = ENABLED(SERIAL_STATS_DROPPED_RX);
+  static constexpr bool RX_OVERRUNS       = ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS);
+  static constexpr bool RX_FRAMING_ERRORS = ENABLED(SERIAL_STATS_RX_FRAMING_ERRORS);
+  static constexpr bool MAX_RX_QUEUED     = ENABLED(SERIAL_STATS_MAX_RX_QUEUED);
 };
 
 #if SERIAL_PORT >= 0
-
   extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
-
-#endif // SERIAL_PORT >= 0
-
-#ifdef SERIAL_PORT_2
-
-  extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
-
+#endif
+
+#if defined(SERIAL_PORT_2) && SERIAL_PORT_2 >= 0
+  extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
 #endif

Marlin/src/HAL/DUE/MarlinSerialUSB.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -29,21 +29,21 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if SERIAL_PORT == -1
+#if HAS_USB_SERIAL
 
-#include "MarlinSerialUSB_Due.h"
+#include "MarlinSerialUSB.h"
 
 #if ENABLED(EMERGENCY_PARSER)
-  #include "../../feature/emergency_parser.h"
+  #include "../../feature/e_parser.h"
 #endif
 
 // Imports from Atmel USB Stack/CDC implementation
 extern "C" {
-  bool usb_task_cdc_isenabled(void);
-  bool usb_task_cdc_dtr_active(void);
-  bool udi_cdc_is_rx_ready(void);
-  int udi_cdc_getc(void);
-  bool udi_cdc_is_tx_ready(void);
+  bool usb_task_cdc_isenabled();
+  bool usb_task_cdc_dtr_active();
+  bool udi_cdc_is_rx_ready();
+  int udi_cdc_getc();
+  bool udi_cdc_is_tx_ready();
   int udi_cdc_putc(int value);
 };
 
@@ -55,14 +55,11 @@ static int pending_char = -1;
 #endif
 
 // Public Methods
-void MarlinSerialUSB::begin(const long baud_setting) {
-  UNUSED(baud_setting);
-}
+void MarlinSerialUSB::begin(const long) {}
 
-void MarlinSerialUSB::end() {
-}
+void MarlinSerialUSB::end() {}
 
-int MarlinSerialUSB::peek(void) {
+int MarlinSerialUSB::peek() {
   if (pending_char >= 0)
     return pending_char;
 
@@ -76,14 +73,12 @@ int MarlinSerialUSB::peek(void) {
 
   pending_char = udi_cdc_getc();
 
-  #if ENABLED(EMERGENCY_PARSER)
-    emergency_parser.update(emergency_state, (char)pending_char);
-  #endif
+  TERN_(EMERGENCY_PARSER, emergency_parser.update(emergency_state, (char)pending_char));
 
   return pending_char;
 }
 
-int MarlinSerialUSB::read(void) {
+int MarlinSerialUSB::read() {
   if (pending_char >= 0) {
     int ret = pending_char;
     pending_char = -1;
@@ -100,14 +95,12 @@ int MarlinSerialUSB::read(void) {
 
   int c = udi_cdc_getc();
 
-  #if ENABLED(EMERGENCY_PARSER)
-    emergency_parser.update(emergency_state, (char)c);
-  #endif
+  TERN_(EMERGENCY_PARSER, emergency_parser.update(emergency_state, (char)c));
 
   return c;
 }
 
-bool MarlinSerialUSB::available(void) {
+bool MarlinSerialUSB::available() {
     /* If Pending chars */
   return pending_char >= 0 ||
     /* or USB CDC enumerated and configured on the PC side and some
@@ -115,8 +108,8 @@ bool MarlinSerialUSB::available(void) {
       (usb_task_cdc_isenabled() && udi_cdc_is_rx_ready());
 }
 
-void MarlinSerialUSB::flush(void) { }
-void MarlinSerialUSB::flushTX(void) { }
+void MarlinSerialUSB::flush() { }
+void MarlinSerialUSB::flushTX() { }
 
 void MarlinSerialUSB::write(const uint8_t c) {
 
@@ -186,7 +179,7 @@ void MarlinSerialUSB::print(double n, int digits) {
   printFloat(n, digits);
 }
 
-void MarlinSerialUSB::println(void) {
+void MarlinSerialUSB::println() {
   print('\r');
   print('\n');
 }
@@ -262,7 +255,7 @@ void MarlinSerialUSB::printFloat(double number, uint8_t digits) {
 
   // Round correctly so that print(1.999, 2) prints as "2.00"
   double rounding = 0.5;
-  for (uint8_t i = 0; i < digits; ++i)
+  LOOP_L_N(i, digits)
     rounding *= 0.1;
 
   number += rounding;
@@ -286,8 +279,12 @@ void MarlinSerialUSB::printFloat(double number, uint8_t digits) {
 }
 
 // Preinstantiate
-MarlinSerialUSB customizedSerial1;
-
-#endif // SERIAL_PORT == -1
+#if SERIAL_PORT == -1
+  MarlinSerialUSB customizedSerial1;
+#endif
+#if SERIAL_PORT_2 == -1
+  MarlinSerialUSB customizedSerial2;
+#endif
 
+#endif // HAS_USB_SERIAL
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/MarlinSerialUSB.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -28,7 +28,7 @@
 
 #include "../../inc/MarlinConfig.h"
 
-#if SERIAL_PORT == -1
+#if HAS_USB_SERIAL
 
 #include <WString.h>
 
@@ -43,11 +43,11 @@ public:
   MarlinSerialUSB() {};
   static void begin(const long);
   static void end();
-  static int peek(void);
-  static int read(void);
-  static void flush(void);
-  static void flushTX(void);
-  static bool available(void);
+  static int peek();
+  static int read();
+  static void flush();
+  static void flushTX();
+  static bool available();
   static void write(const uint8_t c);
 
   #if ENABLED(SERIAL_STATS_DROPPED_RX)
@@ -80,7 +80,7 @@ public:
   static void println(long, int = DEC);
   static void println(unsigned long, int = DEC);
   static void println(double, int = 2);
-  static void println(void);
+  static void println();
   operator bool() { return true; }
 
 private:
@@ -88,6 +88,12 @@ private:
   static void printFloat(double, uint8_t);
 };
 
-extern MarlinSerialUSB customizedSerial1;
+#if SERIAL_PORT == -1
+  extern MarlinSerialUSB customizedSerial1;
+#endif
 
-#endif // SERIAL_PORT == -1
+#if SERIAL_PORT_2 == -1
+  extern MarlinSerialUSB customizedSerial2;
+#endif
+
+#endif // HAS_USB_SERIAL

Marlin/src/HAL/DUE/Servo.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -44,31 +44,30 @@
 
 #if HAS_SERVOS
 
-#include "../shared/Marduino.h"
 #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)
 
-//------------------------------------------------------------------------------
+// ------------------------
 /// Interrupt handler for the TC0 channel 1.
-//------------------------------------------------------------------------------
+// ------------------------
 void Servo_Handler(timer16_Sequence_t timer, Tc *pTc, uint8_t channel);
 
 #ifdef _useTimer1
-  void HANDLER_FOR_TIMER1(void) { Servo_Handler(_timer1, TC_FOR_TIMER1, CHANNEL_FOR_TIMER1); }
+  void HANDLER_FOR_TIMER1() { Servo_Handler(_timer1, TC_FOR_TIMER1, CHANNEL_FOR_TIMER1); }
 #endif
 #ifdef _useTimer2
-  void HANDLER_FOR_TIMER2(void) { Servo_Handler(_timer2, TC_FOR_TIMER2, CHANNEL_FOR_TIMER2); }
+  void HANDLER_FOR_TIMER2() { Servo_Handler(_timer2, TC_FOR_TIMER2, CHANNEL_FOR_TIMER2); }
 #endif
 #ifdef _useTimer3
-  void HANDLER_FOR_TIMER3(void) { Servo_Handler(_timer3, TC_FOR_TIMER3, CHANNEL_FOR_TIMER3); }
+  void HANDLER_FOR_TIMER3() { Servo_Handler(_timer3, TC_FOR_TIMER3, CHANNEL_FOR_TIMER3); }
 #endif
 #ifdef _useTimer4
-  void HANDLER_FOR_TIMER4(void) { Servo_Handler(_timer4, TC_FOR_TIMER4, CHANNEL_FOR_TIMER4); }
+  void HANDLER_FOR_TIMER4() { Servo_Handler(_timer4, TC_FOR_TIMER4, CHANNEL_FOR_TIMER4); }
 #endif
 #ifdef _useTimer5
-  void HANDLER_FOR_TIMER5(void) { Servo_Handler(_timer5, TC_FOR_TIMER5, CHANNEL_FOR_TIMER5); }
+  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) {
@@ -137,7 +136,7 @@ void initISR(timer16_Sequence_t timer) {
   #endif
 }
 
-void finISR(timer16_Sequence_t timer) {
+void finISR(timer16_Sequence_t) {
   #ifdef _useTimer1
     TC_Stop(TC_FOR_TIMER1, CHANNEL_FOR_TIMER1);
   #endif

Marlin/src/HAL/DUE/ServoTimers.h

@@ -36,8 +36,8 @@
 //!#define _useTimer4
 #define _useTimer5
 
-#define TRIM_DURATION       2    // compensation ticks to trim adjust for digitalWrite delays
-#define PRESCALER           32   // timer prescaler
+#define TRIM_DURATION             2   // compensation ticks to trim adjust for digitalWrite delays
+#define SERVO_TIMER_PRESCALER     32  // timer prescaler
 
 /*
   TC0, chan 0 => TC0_Handler

Marlin/src/HAL/DUE/Tone.cpp

@@ -1,10 +1,12 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
+ * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
+ *
  * 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
@@ -16,20 +18,19 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
 /**
  * Description: Tone function for Arduino Due and compatible (SAM3X8E)
- * Derived from http://forum.arduino.cc/index.php?topic=136500.msg2903012#msg2903012
+ * Derived from https://forum.arduino.cc/index.php?topic=136500.msg2903012#msg2903012
  */
 
 #ifdef ARDUINO_ARCH_SAM
 
 #include "../../inc/MarlinConfig.h"
 #include "HAL.h"
-#include "HAL_timers_Due.h"
 
 static pin_t tone_pin;
 volatile static int32_t toggles;

Marlin/src/HAL/DUE/dogm/u8g_com_HAL_DUE_shared_hw_spi.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,63 +16,62 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
 
-/*
-
-  based on u8g_com_msp430_hw_spi.c
-
-  Universal 8bit Graphics Library
-
-  Copyright (c) 2012, olikraus@gmail.com
-  All rights reserved.
-
-  Redistribution and use in source and binary forms, with or without modification,
-  are permitted provided that the following conditions are met:
-
-  * Redistributions of source code must retain the above copyright notice, this list
-  of conditions and the following disclaimer.
-
-  * Redistributions in binary form must reproduce the above copyright notice, this
-  list of conditions and the following disclaimer in the documentation and/or other
-  materials provided with the distribution.
-
-  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
-  CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
-  INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
-  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
-  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
-  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-*/
+/**
+ * Based on u8g_com_msp430_hw_spi.c
+ *
+ * Universal 8bit Graphics Library
+ *
+ * Copyright (c) 2012, olikraus@gmail.com
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this list
+ * of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright notice, this
+ * list of conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
 
 #ifdef __SAM3X8E__
 
-#include "../../inc/MarlinConfigPre.h"
+#include "../../../inc/MarlinConfigPre.h"
 
 #if HAS_GRAPHICAL_LCD
 
 #include <U8glib.h>
 
-#include "../../Marlin.h"
+#include "../../../MarlinCore.h"
 
 void spiBegin();
 void spiInit(uint8_t spiRate);
 void spiSend(uint8_t b);
 void spiSend(const uint8_t* buf, size_t n);
 
-#include "../shared/Marduino.h"
-#include "fastio_Due.h"
+#include "../../shared/Marduino.h"
+#include "../fastio.h"
 
 void u8g_SetPIOutput_DUE_hw_spi(u8g_t *u8g, uint8_t pin_index) {
    PIO_Configure(g_APinDescription[u8g->pin_list[pin_index]].pPort, PIO_OUTPUT_1,

Marlin/src/HAL/DUE/dogm/u8g_com_HAL_DUE_st7920_sw_spi.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -55,11 +55,11 @@
 
 #ifdef ARDUINO_ARCH_SAM
 
-#include "../../inc/MarlinConfigPre.h"
+#include "../../../inc/MarlinConfigPre.h"
 
 #if ENABLED(U8GLIB_ST7920)
 
-#include "../shared/Delay.h"
+#include "../../shared/Delay.h"
 
 #include <U8glib.h>
 
@@ -145,8 +145,8 @@ uint8_t u8g_com_HAL_DUE_ST7920_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_va
 }
 
 #if ENABLED(LIGHTWEIGHT_UI)
-  #include "../../lcd/ultralcd.h"
-  #include "../shared/HAL_ST7920.h"
+  #include "../../../lcd/ultralcd.h"
+  #include "../../shared/HAL_ST7920.h"
 
   #define ST7920_CS_PIN LCD_PINS_RS
 

Marlin/src/HAL/DUE/dogm/u8g_com_HAL_DUE_sw_spi.cpp

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -55,7 +55,7 @@
 
 #ifdef ARDUINO_ARCH_SAM
 
-#include "../../inc/MarlinConfigPre.h"
+#include "../../../inc/MarlinConfigPre.h"
 
 #if HAS_GRAPHICAL_LCD && DISABLED(U8GLIB_ST7920)
 
@@ -64,8 +64,8 @@
 
 #include "u8g_com_HAL_DUE_sw_spi_shared.h"
 
-#include "../shared/Marduino.h"
-#include "../shared/Delay.h"
+#include "../../shared/Marduino.h"
+#include "../../shared/Delay.h"
 
 #include <U8glib.h>
 

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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -55,11 +55,11 @@
 
 #ifdef ARDUINO_ARCH_SAM
 
-#include "../../inc/MarlinConfigPre.h"
+#include "../../../inc/MarlinConfigPre.h"
 
 #if HAS_GRAPHICAL_LCD
 
-#include "../shared/Delay.h"
+#include "../../shared/Delay.h"
 
 #include <U8glib.h>
 
@@ -80,7 +80,7 @@ Pio *SCK_pPio, *MOSI_pPio;
 uint32_t SCK_dwMask, MOSI_dwMask;
 
 void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
-  for (uint8_t i = 0; i < 8; i++) {
+  LOOP_L_N(i, 8) {
     if (val & 0x80)
       MOSI_pPio->PIO_SODR = MOSI_dwMask;
     else
@@ -94,7 +94,7 @@ void u8g_spiSend_sw_DUE_mode_0(uint8_t val) { // 3MHz
 }
 
 void u8g_spiSend_sw_DUE_mode_3(uint8_t val) { // 3.5MHz
-  for (uint8_t i = 0; i < 8; i++) {
+  LOOP_L_N(i, 8) {
     SCK_pPio->PIO_CODR = SCK_dwMask;
     DELAY_NS(50);
     if (val & 0x80)

Marlin/src/HAL/DUE/dogm/u8g_com_HAL_DUE_sw_spi_shared.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,13 +16,14 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
 
-#include "../../inc/MarlinConfigPre.h"
-#include "../shared/Marduino.h"
+#include "../../../inc/MarlinConfigPre.h"
+#include "../../shared/Marduino.h"
+#include <U8glib.h>
 
 void u8g_SetPIOutput_DUE(u8g_t *u8g, uint8_t pin_index);
 void u8g_SetPILevel_DUE(u8g_t *u8g, uint8_t pin_index, uint8_t level);

Marlin/src/HAL/DUE/eeprom_flash.cpp

@@ -1,3 +1,30 @@
+/**
+ * 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
+ *
+ * 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 ARDUINO_ARCH_SAM
+
+#include "../../inc/MarlinConfig.h"
+
+#if ENABLED(FLASH_EEPROM_EMULATION)
 
 /* EEPROM emulation over flash with reduced wear
  *
@@ -29,14 +56,7 @@
  *
  */
 
-#ifdef ARDUINO_ARCH_SAM
-
-#include "../shared/persistent_store_api.h"
-#include "../../inc/MarlinConfig.h"
-
-#if ENABLED(EEPROM_SETTINGS) && NONE(I2C_EEPROM, SPI_EEPROM)
-
-#include "../shared/Marduino.h"
+//#define EE_EMU_DEBUG
 
 #define EEPROMSize     4096
 #define PagesPerGroup   128
@@ -113,15 +133,18 @@ static uint8_t buffer[256] = {0},   // The RAM buffer to accumulate writes
                curPage = 0,         // Current FLASH page inside the group
                curGroup = 0xFF;     // Current FLASH group
 
-//#define EE_EMU_DEBUG
-#ifdef EE_EMU_DEBUG
-  static void ee_Dump(int page,const void* data) {
+#define DEBUG_OUT ENABLED(EE_EMU_DEBUG)
+#include "../../core/debug_out.h"
+
+static void ee_Dump(const int page, const void* data) {
+
+  #ifdef EE_EMU_DEBUG
 
     const uint8_t* c = (const uint8_t*) data;
     char buffer[80];
 
     sprintf_P(buffer, PSTR("Page: %d (0x%04x)\n"), page, page);
-    SERIAL_ECHO(buffer);
+    DEBUG_ECHO(buffer);
 
     char* p = &buffer[0];
     for (int i = 0; i< PageSize; ++i) {
@@ -131,12 +154,16 @@ static uint8_t buffer[256] = {0},   // The RAM buffer to accumulate writes
       if ((i & 0xF) == 0xF) {
         *p++ = '\n';
         *p = 0;
-        SERIAL_ECHO(buffer);
+        DEBUG_ECHO(buffer);
         p = &buffer[0];
       }
     }
-  }
-#endif
+
+  #else
+    UNUSED(page);
+    UNUSED(data);
+  #endif
+}
 
 /* Flash Writing Protection Key */
 #define FWP_KEY    0x5Au
@@ -149,17 +176,16 @@ static uint8_t buffer[256] = {0},   // The RAM buffer to accumulate writes
   #define EEFC_ERROR_FLAGS  (EEFC_FSR_FLOCKE | EEFC_FSR_FCMDE)
 #endif
 
-
 /**
  * Writes the contents of the specified page (no previous erase)
  * @param page    (page #)
  * @param data    (pointer to the data buffer)
  */
 __attribute__ ((long_call, section (".ramfunc")))
-static bool ee_PageWrite(uint16_t page,const void* data) {
+static bool ee_PageWrite(uint16_t page, const void* data) {
 
   uint16_t i;
-  uint32_t addrflash = ((uint32_t)getFlashStorage(page));
+  uint32_t addrflash = uint32_t(getFlashStorage(page));
 
   // Read the flash contents
   uint32_t pageContents[PageSize>>2];
@@ -174,13 +200,11 @@ 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]));
 
-  #ifdef EE_EMU_DEBUG
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("EEPROM PageWrite   ", page);
-    SERIAL_ECHOLNPAIR(" in FLASH address ", (uint32_t)addrflash);
-    SERIAL_ECHOLNPAIR(" base address     ", (uint32_t)getFlashStorage(0));
-    SERIAL_FLUSH();
-  #endif
+  DEBUG_ECHO_START();
+  DEBUG_ECHOLNPAIR("EEPROM PageWrite   ", page);
+  DEBUG_ECHOLNPAIR(" in FLASH address ", (uint32_t)addrflash);
+  DEBUG_ECHOLNPAIR(" base address     ", (uint32_t)getFlashStorage(0));
+  DEBUG_FLUSH();
 
   // Get the page relative to the start of the EFC controller, and the EFC controller to use
   Efc *efc;
@@ -222,10 +246,8 @@ static bool ee_PageWrite(uint16_t page,const void* data) {
     // Reenable interrupts
     __enable_irq();
 
-    #ifdef EE_EMU_DEBUG
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR("EEPROM Unlock failure for page ", page);
-    #endif
+    DEBUG_ECHO_START();
+    DEBUG_ECHOLNPAIR("EEPROM Unlock failure for page ", page);
     return false;
   }
 
@@ -249,10 +271,9 @@ static bool ee_PageWrite(uint16_t page,const void* data) {
     // Reenable interrupts
     __enable_irq();
 
-    #ifdef EE_EMU_DEBUG
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR("EEPROM Write failure for page ", page);
-    #endif
+    DEBUG_ECHO_START();
+    DEBUG_ECHOLNPAIR("EEPROM Write failure for page ", page);
+
     return false;
   }
 
@@ -266,11 +287,11 @@ static bool ee_PageWrite(uint16_t page,const void* data) {
   if (memcmp(getFlashStorage(page),data,PageSize)) {
 
     #ifdef EE_EMU_DEBUG
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR("EEPROM Verify Write failure for page ", page);
+      DEBUG_ECHO_START();
+      DEBUG_ECHOLNPAIR("EEPROM Verify Write failure for page ", page);
 
-      ee_Dump( page,(uint32_t *) addrflash);
-      ee_Dump(-page,data);
+      ee_Dump( page, (uint32_t *)addrflash);
+      ee_Dump(-page, data);
 
       // Calculate count of changed bits
       uint32_t* p1 = (uint32_t*)addrflash;
@@ -286,7 +307,7 @@ static bool ee_PageWrite(uint16_t page,const void* data) {
           }
         }
       }
-      SERIAL_ECHOLNPAIR("--> Differing bits: ", count);
+      DEBUG_ECHOLNPAIR("--> Differing bits: ", count);
     #endif
 
     return false;
@@ -303,15 +324,13 @@ __attribute__ ((long_call, section (".ramfunc")))
 static bool ee_PageErase(uint16_t page) {
 
   uint16_t i;
-  uint32_t addrflash = ((uint32_t)getFlashStorage(page));
+  uint32_t addrflash = uint32_t(getFlashStorage(page));
 
-  #ifdef EE_EMU_DEBUG
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("EEPROM PageErase  ", page);
-    SERIAL_ECHOLNPAIR(" in FLASH address ", (uint32_t)addrflash);
-    SERIAL_ECHOLNPAIR(" base address     ", (uint32_t)getFlashStorage(0));
-    SERIAL_FLUSH();
-  #endif
+  DEBUG_ECHO_START();
+  DEBUG_ECHOLNPAIR("EEPROM PageErase  ", page);
+  DEBUG_ECHOLNPAIR(" in FLASH address ", (uint32_t)addrflash);
+  DEBUG_ECHOLNPAIR(" base address     ", (uint32_t)getFlashStorage(0));
+  DEBUG_FLUSH();
 
   // Get the page relative to the start of the EFC controller, and the EFC controller to use
   Efc *efc;
@@ -352,10 +371,9 @@ static bool ee_PageErase(uint16_t page) {
     // Reenable interrupts
     __enable_irq();
 
-    #ifdef EE_EMU_DEBUG
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR("EEPROM Unlock failure for page ",page);
-    #endif
+    DEBUG_ECHO_START();
+    DEBUG_ECHOLNPAIR("EEPROM Unlock failure for page ",page);
+
     return false;
   }
 
@@ -377,10 +395,9 @@ static bool ee_PageErase(uint16_t page) {
     // Reenable interrupts
     __enable_irq();
 
-    #ifdef EE_EMU_DEBUG
-      SERIAL_ECHO_START();
-      SERIAL_ECHOLNPAIR("EEPROM Erase failure for page ",page);
-    #endif
+    DEBUG_ECHO_START();
+    DEBUG_ECHOLNPAIR("EEPROM Erase failure for page ",page);
+
     return false;
   }
 
@@ -394,20 +411,17 @@ 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) {
-
-      #ifdef EE_EMU_DEBUG
-        SERIAL_ECHO_START();
-        SERIAL_ECHOLNPAIR("EEPROM Verify Erase failure for page ",page);
-
-        ee_Dump( page,(uint32_t *) addrflash);
-      #endif
+      DEBUG_ECHO_START();
+      DEBUG_ECHOLNPAIR("EEPROM Verify Erase failure for page ",page);
+      ee_Dump(page, (uint32_t *)addrflash);
       return false;
     }
   }
 
   return true;
 }
-static uint8_t ee_Read(uint32_t address, bool excludeRAMBuffer = false) {
+
+static uint8_t ee_Read(uint32_t address, bool excludeRAMBuffer=false) {
 
   uint32_t baddr;
   uint32_t blen;
@@ -490,7 +504,7 @@ static uint8_t ee_Read(uint32_t address, bool excludeRAMBuffer = false) {
   return 0xFF;
 }
 
-static uint32_t ee_GetAddrRange(uint32_t address, bool excludeRAMBuffer = false) {
+static uint32_t ee_GetAddrRange(uint32_t address, bool excludeRAMBuffer=false) {
   uint32_t baddr,
            blen,
            nextAddr = 0xFFFF,
@@ -582,7 +596,7 @@ static bool ee_IsPageClean(int page) {
   return true;
 }
 
-static bool ee_Flush(uint32_t overrideAddress = 0xFFFFFFFF, uint8_t overrideData = 0xFF) {
+static bool ee_Flush(uint32_t overrideAddress = 0xFFFFFFFF, uint8_t overrideData=0xFF) {
 
   // Check if RAM buffer has something to be written
   bool isEmpty = true;
@@ -908,11 +922,9 @@ static void ee_Init() {
   // If all groups seem to be used, default to first group
   if (curGroup >= GroupCount) curGroup = 0;
 
-  #ifdef EE_EMU_DEBUG
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("EEPROM Current Group: ",curGroup);
-    SERIAL_FLUSH();
-  #endif
+  DEBUG_ECHO_START();
+  DEBUG_ECHOLNPAIR("EEPROM Current Group: ",curGroup);
+  DEBUG_FLUSH();
 
   // Now, validate that all the other group pages are empty
   for (int grp = 0; grp < GroupCount; grp++) {
@@ -920,12 +932,9 @@ static void ee_Init() {
 
     for (int page = 0; page < PagesPerGroup; page++) {
       if (!ee_IsPageClean(grp * PagesPerGroup + page)) {
-        #ifdef EE_EMU_DEBUG
-          SERIAL_ECHO_START();
-          SERIAL_ECHOPAIR("EEPROM Page ",page);
-          SERIAL_ECHOLNPAIR(" not clean on group ",grp);
-          SERIAL_FLUSH();
-        #endif
+        DEBUG_ECHO_START();
+        DEBUG_ECHOLNPAIR("EEPROM Page ", page, " not clean on group ", grp);
+        DEBUG_FLUSH();
         ee_PageErase(grp * PagesPerGroup + page);
       }
     }
@@ -935,67 +944,69 @@ static void ee_Init() {
   // and also validate that all the other ones are clean
   for (curPage = 0; curPage < PagesPerGroup; curPage++) {
     if (ee_IsPageClean(curGroup * PagesPerGroup + curPage)) {
-      #ifdef EE_EMU_DEBUG
-        ee_Dump(curGroup * PagesPerGroup + curPage, getFlashStorage(curGroup * PagesPerGroup + curPage));
-      #endif
+      ee_Dump(curGroup * PagesPerGroup + curPage, getFlashStorage(curGroup * PagesPerGroup + curPage));
       break;
     }
   }
 
-  #ifdef EE_EMU_DEBUG
-    SERIAL_ECHO_START();
-    SERIAL_ECHOLNPAIR("EEPROM Active page: ",curPage);
-    SERIAL_FLUSH();
-  #endif
+  DEBUG_ECHO_START();
+  DEBUG_ECHOLNPAIR("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)) {
-      #ifdef EE_EMU_DEBUG
-        SERIAL_ECHO_START();
-        SERIAL_ECHOPAIR("EEPROM Page ",page);
-        SERIAL_ECHOLNPAIR(" not clean on active group ",curGroup);
-        SERIAL_FLUSH();
-        ee_Dump(curGroup * PagesPerGroup + page, getFlashStorage(curGroup * PagesPerGroup + page));
-      #endif
+      DEBUG_ECHO_START();
+      DEBUG_ECHOLNPAIR("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);
     }
   }
 }
 
-uint8_t eeprom_read_byte(uint8_t* addr) {
-  ee_Init();
-  return ee_Read((uint32_t)addr);
-}
+/* PersistentStore -----------------------------------------------------------*/
 
-void eeprom_write_byte(uint8_t* addr, uint8_t value) {
-  ee_Init();
-  ee_Write((uint32_t)addr, value);
-}
+#include "../shared/eeprom_api.h"
 
-void eeprom_update_block(const void* __src, void* __dst, size_t __n) {
-  uint8_t* dst = (uint8_t*)__dst;
-  const uint8_t* src = (const uint8_t*)__src;
-  while (__n--) {
-    eeprom_write_byte(dst, *src);
-    ++dst;
-    ++src;
+#ifndef MARLIN_EEPROM_SIZE
+  #define MARLIN_EEPROM_SIZE 0x1000 // 4KB
+#endif
+size_t PersistentStore::capacity()    { return MARLIN_EEPROM_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) {
+  while (size--) {
+    uint8_t * const p = (uint8_t * const)pos;
+    uint8_t v = *value;
+    // EEPROM has only ~100,000 write cycles,
+    // so only write bytes that have changed!
+    if (v != ee_Read(uint32_t(p))) {
+      ee_Write(uint32_t(p), v);
+      delay(2);
+      if (ee_Read(uint32_t(p)) != v) {
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
+        return true;
+      }
+    }
+    crc16(crc, &v, 1);
+    pos++;
+    value++;
   }
+  return false;
 }
 
-void eeprom_read_block(void* __dst, const void* __src, size_t __n) {
-  uint8_t* dst = (uint8_t*)__dst;
-  uint8_t* src = (uint8_t*)__src;
-  while (__n--) {
-    *dst = eeprom_read_byte(src);
-    ++dst;
-    ++src;
-  }
+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));
+    if (writing) *value = c;
+    crc16(crc, &c, 1);
+    pos++;
+    value++;
+  } while (--size);
+  return false;
 }
 
-void eeprom_flush(void) {
-  ee_Flush();
-}
-
-#endif // EEPROM_SETTINGS && (!I2C_EEPROM && !SPI_EEPROM)
-#endif // ARDUINO_ARCH_AVR
+#endif // FLASH_EEPROM_EMULATION
+#endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/eeprom_wired.cpp

@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * 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
@@ -17,32 +17,29 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #ifdef ARDUINO_ARCH_SAM
 
-#include "../../inc/MarlinConfigPre.h"
-
-#if ENABLED(EEPROM_SETTINGS)
-
 #include "../../inc/MarlinConfig.h"
-#include "../shared/persistent_store_api.h"
 
-#if !defined(E2END) && NONE(I2C_EEPROM, SPI_EEPROM)
-  #define E2END 0xFFF // Default to Flash emulated EEPROM size (EepromEmulation_Due.cpp)
+#if USE_WIRED_EEPROM
+
+/**
+ * PersistentStore for Arduino-style EEPROM interface
+ * with simple implementations supplied by Marlin.
+ */
+
+#include "../shared/eeprom_if.h"
+#include "../shared/eeprom_api.h"
+
+#ifndef MARLIN_EEPROM_SIZE
+  #error "MARLIN_EEPROM_SIZE is required for I2C / SPI EEPROM."
 #endif
-
-extern void eeprom_flush(void);
-
-bool PersistentStore::access_start() { return true; }
-
-bool PersistentStore::access_finish() {
-  #if NONE(I2C_EEPROM, SPI_EEPROM)
-    eeprom_flush();
-  #endif
-  return true;
-}
+size_t PersistentStore::capacity()    { return MARLIN_EEPROM_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) {
   while (size--) {
@@ -54,14 +51,14 @@ bool PersistentStore::write_data(int &pos, const uint8_t *value, size_t size, ui
       eeprom_write_byte(p, v);
       delay(2);
       if (eeprom_read_byte(p) != v) {
-        SERIAL_ECHO_MSG(MSG_ERR_EEPROM_WRITE);
+        SERIAL_ECHO_MSG(STR_ERR_EEPROM_WRITE);
         return true;
       }
     }
     crc16(crc, &v, 1);
     pos++;
     value++;
-  };
+  }
   return false;
 }
 
@@ -76,7 +73,5 @@ bool PersistentStore::read_data(int &pos, uint8_t* value, size_t size, uint16_t
   return false;
 }
 
-size_t PersistentStore::capacity() { return E2END + 1; }
-
-#endif // EEPROM_SETTINGS
+#endif // USE_WIRED_EEPROM
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/endstop_interrupts.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -35,53 +35,33 @@
  * (Located in Marlin/buildroot/share/pin_interrupt_test/pin_interrupt_test.ino)
  */
 
-#pragma once
-
 #include "../../module/endstops.h"
 
 // One ISR for all EXT-Interrupts
-void endstop_ISR(void) { endstops.update(); }
+void endstop_ISR() { endstops.update(); }
 
 /**
  *  Endstop interrupts for Due based targets.
  *  On Due, all pins support external interrupt capability.
  */
 
-void setup_endstop_interrupts( void ) {
-
-  #if HAS_X_MAX
-    attachInterrupt(digitalPinToInterrupt(X_MAX_PIN), endstop_ISR, CHANGE); // assign it
-  #endif
-
-  #if HAS_X_MIN
-    attachInterrupt(digitalPinToInterrupt(X_MIN_PIN), endstop_ISR, CHANGE);
-  #endif
-
-  #if HAS_Y_MAX
-    attachInterrupt(digitalPinToInterrupt(Y_MAX_PIN), endstop_ISR, CHANGE);
-  #endif
-
-  #if HAS_Y_MIN
-    attachInterrupt(digitalPinToInterrupt(Y_MIN_PIN), endstop_ISR, CHANGE);
-  #endif
-
-  #if HAS_Z_MAX
-    attachInterrupt(digitalPinToInterrupt(Z_MAX_PIN), endstop_ISR, CHANGE);
-  #endif
-
-  #if HAS_Z_MIN
-     attachInterrupt(digitalPinToInterrupt(Z_MIN_PIN), endstop_ISR, CHANGE);
-  #endif
-
-  #if HAS_Z2_MAX
-    attachInterrupt(digitalPinToInterrupt(Z2_MAX_PIN), endstop_ISR, CHANGE);
-  #endif
-
-  #if HAS_Z2_MIN
-    attachInterrupt(digitalPinToInterrupt(Z2_MIN_PIN), endstop_ISR, CHANGE);
-  #endif
-
-  #if HAS_Z_MIN_PROBE_PIN
-    attachInterrupt(digitalPinToInterrupt(Z_MIN_PROBE_PIN), endstop_ISR, CHANGE);
-  #endif
+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));
 }

Marlin/src/HAL/DUE/fastio.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -58,7 +58,7 @@
  *
  * Now you can simply SET_OUTPUT(STEP); WRITE(STEP, HIGH); WRITE(STEP, LOW);
  *
- * Why double up on these macros? see http://gcc.gnu.org/onlinedocs/cpp/Stringification.html
+ * Why double up on these macros? see https://gcc.gnu.org/onlinedocs/cpp/Stringification.html
  */
 
 // Read a pin
@@ -70,14 +70,14 @@
   const uint32_t mask = MASK(DIO ## IO ## _PIN); \
   if (V) port->PIO_SODR = mask; \
   else port->PIO_CODR = mask; \
-} while(0)
+}while(0)
 
 // Toggle a pin
 #define _TOGGLE(IO) _WRITE(IO, !READ(IO))
 
 #if MB(PRINTRBOARD_G2)
 
-  #include "G2_pins.h"
+  #include "fastio/G2_pins.h"
 
   // Set pin as input
   #define _SET_INPUT(IO) do{ \
@@ -166,7 +166,7 @@
 // Set pin as output (wrapper) -  reads the pin and sets the output to that value
 #define SET_OUTPUT(IO)       _SET_OUTPUT(IO)
 // Set pin as PWM
-#define SET_PWM(IO)           SET_OUTPUT(IO)
+#define SET_PWM               SET_OUTPUT
 
 // Check if pin is an input
 #define IS_INPUT(IO)         ((digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO)) == 0)
@@ -174,7 +174,7 @@
 #define IS_OUTPUT(IO)        ((digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO)) != 0)
 
 // Shorthand
-#define OUT_WRITE(IO,V)       { SET_OUTPUT(IO); WRITE(IO,V); }
+#define OUT_WRITE(IO,V)      do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)

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

@@ -0,0 +1,206 @@
+/**
+ * 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/>.
+ *
+ */
+
+/**
+ * The PWM module is only used to generate interrupts at specified times. It
+ * is NOT used to directly toggle pins. The ISR writes to the pin assigned to
+ * that interrupt.
+ *
+ * All PWMs use the same repetition rate.  The G2 needs about 10KHz min in order to
+ * not have obvious ripple on the Vref signals.
+ *
+ * The data structures are setup to minimize the computation done by the ISR which
+ * minimizes ISR execution time.  Execution times are 0.8 to 1.1 microseconds.
+ *
+ * FIve PWM interrupt sources are used.  Channel 0 sets the base period.  All Vref
+ * signals are set active when this counter overflows and resets to zero.  The compare
+ * values in channels 1-4 are set to give the desired duty cycle for that Vref pin.
+ * When counter 0 matches the compare value then that channel generates an interrupt.
+ * The ISR checks the source of the interrupt and sets the corresponding pin inactive.
+ *
+ * Some jitter in the Vref signal is OK so the interrupt priority is left at its default value.
+ */
+
+#include "../../../inc/MarlinConfig.h"
+
+#if MB(PRINTRBOARD_G2)
+
+#include "G2_PWM.h"
+
+#if PIN_EXISTS(MOTOR_CURRENT_PWM_X)
+  #define G2_PWM_X 1
+#else
+  #define G2_PWM_X 0
+#endif
+#if PIN_EXISTS(MOTOR_CURRENT_PWM_Y)
+  #define G2_PWM_Y 1
+#else
+  #define G2_PWM_Y 0
+#endif
+#if PIN_EXISTS(MOTOR_CURRENT_PWM_Z)
+  #define G2_PWM_Z 1
+#else
+  #define G2_PWM_Z 0
+#endif
+#if PIN_EXISTS(MOTOR_CURRENT_PWM_E)
+  #define G2_PWM_E 1
+#else
+  #define G2_PWM_E 0
+#endif
+#define G2_MASK_X(V) (G2_PWM_X * (V))
+#define G2_MASK_Y(V) (G2_PWM_Y * (V))
+#define G2_MASK_Z(V) (G2_PWM_Z * (V))
+#define G2_MASK_E(V) (G2_PWM_E * (V))
+
+volatile uint32_t *SODR_A = &PIOA->PIO_SODR,
+                  *SODR_B = &PIOB->PIO_SODR,
+                  *CODR_A = &PIOA->PIO_CODR,
+                  *CODR_B = &PIOB->PIO_CODR;
+
+PWM_map ISR_table[NUM_PWMS] = PWM_MAP_INIT;
+
+void Stepper::digipot_init() {
+
+  #if PIN_EXISTS(MOTOR_CURRENT_PWM_X)
+    OUT_WRITE(MOTOR_CURRENT_PWM_X_PIN, 0);  // init pins
+  #endif
+  #if PIN_EXISTS(MOTOR_CURRENT_PWM_Y)
+    OUT_WRITE(MOTOR_CURRENT_PWM_Y_PIN, 0);
+  #endif
+  #if G2_PWM_Z
+    OUT_WRITE(MOTOR_CURRENT_PWM_Z_PIN, 0);
+  #endif
+  #if G2_PWM_E
+    OUT_WRITE(MOTOR_CURRENT_PWM_E_PIN, 0);
+  #endif
+
+  #define WPKEY          (0x50574D << 8) // “PWM” in ASCII
+  #define WPCMD_DIS_SW   0  // command to disable Write Protect SW
+  #define WPRG_ALL       (PWM_WPCR_WPRG0 | PWM_WPCR_WPRG1 | PWM_WPCR_WPRG2 | PWM_WPCR_WPRG3 | PWM_WPCR_WPRG4 | PWM_WPCR_WPRG5)  // all Write Protect Groups
+
+  #define PWM_CLOCK_F    F_CPU / 1000000UL   // set clock to 1MHz
+
+  PMC->PMC_PCER1 = PMC_PCER1_PID36;                       // enable PWM controller clock (disabled on power up)
+
+  PWM->PWM_WPCR = WPKEY | WPRG_ALL | WPCMD_DIS_SW;        // enable setting of all PWM registers
+  PWM->PWM_CLK = PWM_CLOCK_F;                             // enable CLK_A and set it to 1MHz, leave CLK_B disabled
+  PWM->PWM_CH_NUM[0].PWM_CMR = 0b1011;                    // set channel 0 to Clock A input & to left aligned
+  if (G2_PWM_X) PWM->PWM_CH_NUM[1].PWM_CMR = 0b1011;      // set channel 1 to Clock A input & to left aligned
+  if (G2_PWM_Y) PWM->PWM_CH_NUM[2].PWM_CMR = 0b1011;      // set channel 2 to Clock A input & to left aligned
+  if (G2_PWM_Z) PWM->PWM_CH_NUM[3].PWM_CMR = 0b1011;      // set channel 3 to Clock A input & to left aligned
+  if (G2_PWM_E) PWM->PWM_CH_NUM[4].PWM_CMR = 0b1011;      // set channel 4 to Clock A input & to left aligned
+
+  PWM->PWM_CH_NUM[0].PWM_CPRD = PWM_PERIOD_US;            // set channel 0 Period
+
+  PWM->PWM_IER2 = PWM_IER1_CHID0;                         // generate interrupt when counter0 overflows
+  PWM->PWM_IER2 = PWM_IER2_CMPM0
+    | G2_MASK_X(PWM_IER2_CMPM1)
+    | G2_MASK_Y(PWM_IER2_CMPM2)
+    | G2_MASK_Z(PWM_IER2_CMPM3)
+    | G2_MASK_E(PWM_IER2_CMPM4)
+  ; // generate interrupt on compare event
+
+  if (G2_PWM_X) PWM->PWM_CMP[1].PWM_CMPV = 0x010000000LL | G2_VREF_COUNT(G2_VREF(motor_current_setting[0])); // interrupt when counter0 == CMPV - used to set Motor 1 PWM inactive
+  if (G2_PWM_Y) PWM->PWM_CMP[2].PWM_CMPV = 0x010000000LL | G2_VREF_COUNT(G2_VREF(motor_current_setting[0])); // interrupt when counter0 == CMPV - used to set Motor 2 PWM inactive
+  if (G2_PWM_Z) PWM->PWM_CMP[3].PWM_CMPV = 0x010000000LL | G2_VREF_COUNT(G2_VREF(motor_current_setting[1])); // interrupt when counter0 == CMPV - used to set Motor 3 PWM inactive
+  if (G2_PWM_E) PWM->PWM_CMP[4].PWM_CMPV = 0x010000000LL | G2_VREF_COUNT(G2_VREF(motor_current_setting[2])); // interrupt when counter0 == CMPV - used to set Motor 4 PWM inactive
+
+  if (G2_PWM_X) PWM->PWM_CMP[1].PWM_CMPM = 0x0001;  // enable compare event
+  if (G2_PWM_Y) PWM->PWM_CMP[2].PWM_CMPM = 0x0001;  // enable compare event
+  if (G2_PWM_Z) PWM->PWM_CMP[3].PWM_CMPM = 0x0001;  // enable compare event
+  if (G2_PWM_E) PWM->PWM_CMP[4].PWM_CMPM = 0x0001;  // enable compare event
+
+  PWM->PWM_SCM = PWM_SCM_UPDM_MODE0 | PWM_SCM_SYNC0
+    | G2_MASK_X(PWM_SCM_SYNC1)
+    | G2_MASK_Y(PWM_SCM_SYNC2)
+    | G2_MASK_Z(PWM_SCM_SYNC3)
+    | G2_MASK_E(PWM_SCM_SYNC4)
+  ; // sync 1-4 with 0, use mode 0 for updates
+
+  PWM->PWM_ENA = PWM_ENA_CHID0
+    | G2_MASK_X(PWM_ENA_CHID1)
+    | G2_MASK_Y(PWM_ENA_CHID2)
+    | G2_MASK_Z(PWM_ENA_CHID3)
+    | G2_MASK_E(PWM_ENA_CHID4)
+  ; // enable channels used by G2
+
+  PWM->PWM_IER1 = PWM_IER1_CHID0
+    | G2_MASK_X(PWM_IER1_CHID1)
+    | G2_MASK_Y(PWM_IER1_CHID2)
+    | G2_MASK_Z(PWM_IER1_CHID3)
+    | G2_MASK_E(PWM_IER1_CHID4)
+  ; // enable interrupts for channels used by G2
+
+  NVIC_EnableIRQ(PWM_IRQn);     // Enable interrupt handler
+  NVIC_SetPriority(PWM_IRQn, NVIC_EncodePriority(0, 10, 0));  // normal priority for PWM module (can stand some jitter on the Vref signals)
+}
+
+void Stepper::digipot_current(const uint8_t driver, const int16_t current) {
+
+  if (!(PWM->PWM_CH_NUM[0].PWM_CPRD == PWM_PERIOD_US)) digipot_init();  // Init PWM system if needed
+
+  switch (driver) {
+    case 0:
+      if (G2_PWM_X) PWM->PWM_CMP[1].PWM_CMPVUPD = 0x010000000LL | G2_VREF_COUNT(G2_VREF(current));    // update X & Y
+      if (G2_PWM_Y) PWM->PWM_CMP[2].PWM_CMPVUPD = 0x010000000LL | G2_VREF_COUNT(G2_VREF(current));
+      if (G2_PWM_X) PWM->PWM_CMP[1].PWM_CMPMUPD = 0x0001;  // enable compare event
+      if (G2_PWM_Y) PWM->PWM_CMP[2].PWM_CMPMUPD = 0x0001;  // enable compare event
+      if (G2_PWM_X || G2_PWM_Y) PWM->PWM_SCUC = PWM_SCUC_UPDULOCK; // tell the PWM controller to update the values on the next cycle
+      break;
+    case 1:
+      if (G2_PWM_Z) {
+        PWM->PWM_CMP[3].PWM_CMPVUPD = 0x010000000LL | G2_VREF_COUNT(G2_VREF(current));    // update Z
+        PWM->PWM_CMP[3].PWM_CMPMUPD = 0x0001;  // enable compare event
+        PWM->PWM_SCUC = PWM_SCUC_UPDULOCK; // tell the PWM controller to update the values on the next cycle
+      }
+      break;
+    default:
+      if (G2_PWM_E) {
+        PWM->PWM_CMP[4].PWM_CMPVUPD = 0x010000000LL | G2_VREF_COUNT(G2_VREF(current));    // update E
+        PWM->PWM_CMP[4].PWM_CMPMUPD = 0x0001;  // enable compare event
+        PWM->PWM_SCUC = PWM_SCUC_UPDULOCK; // tell the PWM controller to update the values on the next cycle
+      }
+      break;
+  }
+}
+
+volatile uint32_t PWM_ISR1_STATUS, PWM_ISR2_STATUS;
+
+void PWM_Handler() {
+  PWM_ISR1_STATUS = PWM->PWM_ISR1;
+  PWM_ISR2_STATUS = PWM->PWM_ISR2;
+  if (PWM_ISR1_STATUS & PWM_IER1_CHID0) {                                                         // CHAN_0 interrupt
+    if (G2_PWM_X) *ISR_table[0].set_register = ISR_table[0].write_mask;                           // set X to active
+    if (G2_PWM_Y) *ISR_table[1].set_register = ISR_table[1].write_mask;                           // set Y to active
+    if (G2_PWM_Z) *ISR_table[2].set_register = ISR_table[2].write_mask;                           // set Z to active
+    if (G2_PWM_E) *ISR_table[3].set_register = ISR_table[3].write_mask;                           // set E to active
+  }
+  else {
+    if (G2_PWM_X && (PWM_ISR2_STATUS & PWM_IER2_CMPM1)) *ISR_table[0].clr_register = ISR_table[0].write_mask; // set X to inactive
+    if (G2_PWM_Y && (PWM_ISR2_STATUS & PWM_IER2_CMPM2)) *ISR_table[1].clr_register = ISR_table[1].write_mask; // set Y to inactive
+    if (G2_PWM_Z && (PWM_ISR2_STATUS & PWM_IER2_CMPM3)) *ISR_table[2].clr_register = ISR_table[2].write_mask; // set Z to inactive
+    if (G2_PWM_E && (PWM_ISR2_STATUS & PWM_IER2_CMPM4)) *ISR_table[3].clr_register = ISR_table[3].write_mask; // set E to inactive
+  }
+  return;
+}
+
+#endif // PRINTRBOARD_G2

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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -26,8 +26,8 @@
  * PR #7500. It is hardwired for the PRINTRBOARD_G2 Motor Current needs.
  */
 
-#include "../../inc/MarlinConfigPre.h"
-#include "../../module/stepper.h"
+#include "../../../inc/MarlinConfigPre.h"
+#include "../../../module/stepper.h"
 //C:\Users\bobku\Documents\GitHub\Marlin-Bob-2\Marlin\src\module\stepper.h
 //C:\Users\bobku\Documents\GitHub\Marlin-Bob-2\Marlin\src\HAL\HAL_DUE\G2_PWM.h
 
@@ -63,7 +63,7 @@ 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{ for (uint8_t i = 0; i < 6 ; i++) work_table[i] = active_table[i]; }while(0)
+#define COPY_ACTIVE_TABLE() do{ LOOP_L_N(i, 6) 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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once

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

@@ -0,0 +1,26 @@
+/**
+ * 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/>.
+ *
+ */
+#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_adv.h

@@ -0,0 +1,22 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once

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

@@ -0,0 +1,28 @@
+/**
+ * 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/>.
+ *
+ */
+#pragma once
+
+#if USE_FALLBACK_EEPROM
+  #define FLASH_EEPROM_EMULATION
+#elif EITHER(I2C_EEPROM, SPI_EEPROM)
+  #define USE_SHARED_EEPROM 1
+#endif

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

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -52,6 +52,10 @@
   #endif
 #endif
 
-#if ENABLED(FAST_PWM_FAN)
-  #error "FAST_PWM_FAN is not yet implemented for this platform."
+#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."
+#endif
+
+#if HAS_TMC_SW_SERIAL
+  #error "TMC220x Software Serial is not supported on this platform."
 #endif

Marlin/src/HAL/DUE/pinsDebug.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * 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
@@ -13,7 +13,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -62,7 +62,6 @@
 
 #define digitalRead_mod(p) extDigitalRead(p)  // AVR digitalRead disabled PWM before it read the pin
 #define PRINT_PORT(p)
-#define NAME_FORMAT(p) PSTR("%-##p##s")
 #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 GET_ARRAY_PIN(p) pin_array[p].pin

Marlin/src/HAL/DUE/spi_pins.h

@@ -1,6 +1,6 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once

Marlin/src/HAL/DUE/timers.cpp

@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * 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
  *
@@ -16,7 +16,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 
@@ -34,8 +34,6 @@
 #include "../../inc/MarlinConfig.h"
 #include "HAL.h"
 
-#include "HAL_timers_Due.h"
-
 // ------------------------
 // Local defines
 // ------------------------
@@ -50,7 +48,7 @@ const tTimerConfig TimerConfig [NUM_HARDWARE_TIMERS] = {
   { TC0, 0, TC0_IRQn,  3}, // 0 - [servo timer5]
   { TC0, 1, TC1_IRQn,  0}, // 1
   { TC0, 2, TC2_IRQn,  2}, // 2 - stepper
-  { TC1, 0, TC3_IRQn,  0}, // 3
+  { TC1, 0, TC3_IRQn,  0}, // 3 - stepper for BOARD_ARCHIM1
   { TC1, 1, TC4_IRQn, 15}, // 4 - temperature
   { TC1, 2, TC5_IRQn,  3}, // 5 - [servo timer3]
   { TC2, 0, TC6_IRQn, 14}, // 6 - tone

Marlin/src/HAL/DUE/timers.h

@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * Copyright (c) 2016 Bob Cousins bobcousins42@googlemail.com
  *
  * This program is free software: you can redistribute it and/or modify
@@ -15,7 +15,7 @@
  * 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 <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  */
 #pragma once
@@ -39,10 +39,18 @@ typedef uint32_t hal_timer_t;
 
 #define HAL_TIMER_RATE         ((F_CPU) / 2)    // frequency of timers peripherals
 
-#define STEP_TIMER_NUM 2  // index of timer to use for stepper
-#define TEMP_TIMER_NUM 4  // index of timer to use for temperature
-#define PULSE_TIMER_NUM STEP_TIMER_NUM
-#define TONE_TIMER_NUM 6  // index of timer to use for beeper tones
+#ifndef STEP_TIMER_NUM
+  #define STEP_TIMER_NUM        2  // Timer Index for Stepper
+#endif
+#ifndef PULSE_TIMER_NUM
+  #define PULSE_TIMER_NUM       STEP_TIMER_NUM
+#endif
+#ifndef TEMP_TIMER_NUM
+  #define TEMP_TIMER_NUM        4  // Timer Index for Temperature
+#endif
+#ifndef TONE_TIMER_NUM
+  #define TONE_TIMER_NUM        6  // index of timer to use for beeper tones
+#endif
 
 #define TEMP_TIMER_FREQUENCY   1000 // temperature interrupt frequency
 
@@ -61,9 +69,15 @@ typedef uint32_t hal_timer_t;
 #define ENABLE_TEMPERATURE_INTERRUPT()  HAL_timer_enable_interrupt(TEMP_TIMER_NUM)
 #define DISABLE_TEMPERATURE_INTERRUPT() HAL_timer_disable_interrupt(TEMP_TIMER_NUM)
 
-#define HAL_STEP_TIMER_ISR()  void TC2_Handler()
-#define HAL_TEMP_TIMER_ISR()  void TC4_Handler()
-#define HAL_TONE_TIMER_ISR()  void TC6_Handler()
+#ifndef HAL_STEP_TIMER_ISR
+  #define HAL_STEP_TIMER_ISR() void TC2_Handler()
+#endif
+#ifndef HAL_TEMP_TIMER_ISR
+  #define HAL_TEMP_TIMER_ISR() void TC4_Handler()
+#endif
+#ifndef HAL_TONE_TIMER_ISR
+  #define HAL_TONE_TIMER_ISR() void TC6_Handler()
+#endif
 
 // ------------------------
 // Types

Marlin/src/HAL/DUE/upload_extra_script.py

@@ -0,0 +1,18 @@
+#
+# Set upload_command
+#
+#  Windows: bossac.exe
+#  Other: leave unchanged
+#
+
+import platform
+current_OS = platform.system()
+
+if current_OS == 'Windows':
+
+	Import("env")
+
+	# Use bossac.exe on Windows
+	env.Replace(
+	    UPLOADCMD="bossac --info --unlock --write --verify --reset --erase -U false --boot"
+	)

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

@@ -43,7 +43,7 @@
 #pragma once
 
 /**
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 /**

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef UTILS_COMPILER_H
@@ -112,7 +112,7 @@
  * \def unused
  * \brief Marking \a v as a unused parameter or value.
  */
-#define unused(v)          do { (void)(v); } while(0)
+#define unused(v)          do { (void)(v); }while(0)
 
 /**
  * \def barrier
@@ -169,7 +169,7 @@
  * heuristics and inline the function no matter how big it thinks it
  * becomes.
  */
-#if defined(__CC_ARM)
+#ifdef __CC_ARM
 #   define __always_inline   __forceinline
 #elif (defined __GNUC__)
 #ifdef __always_inline
@@ -187,7 +187,7 @@
  * This annotation instructs the compiler to ignore its inlining
  * heuristics and not inline the function.
  */
-#if defined(__CC_ARM)
+#ifdef __CC_ARM
 #   define __no_inline   __attribute__((noinline))
 #elif (defined __GNUC__)
 #	define __no_inline   __attribute__((__noinline__))
@@ -204,7 +204,7 @@
  *
  * \param expr  Expression to evaluate and supposed to be nonzero.
  */
-#if defined(_ASSERT_ENABLE_)
+#ifdef _ASSERT_ENABLE_
 #  if defined(TEST_SUITE_DEFINE_ASSERT_MACRO)
      // Assert() is defined in unit_test/suite.h
 #    include "unit_test/suite.h"
@@ -230,7 +230,7 @@
 
 /* Define NO_INIT attribute */
 #if 0 //ndef NO_INIT
-#if defined   ( __CC_ARM   )
+#ifdef __CC_ARM
 #   define NO_INIT __attribute__((zero_init))
 #elif defined ( __ICCARM__ )
 #   define NO_INIT __no_init
@@ -262,7 +262,7 @@
 //! @{
 typedef unsigned char           Bool; //!< Boolean.
 #ifndef __cplusplus
-#if !defined(__bool_true_false_are_defined)
+#ifndef __bool_true_false_are_defined
 typedef unsigned char           bool; //!< Boolean.
 #endif
 #endif
@@ -443,9 +443,9 @@ typedef struct
 #define DISABLE   0
 #define ENABLE    1
 #ifndef __cplusplus
-#if !defined(__bool_true_false_are_defined)
-#define false 0
-#define true 1
+#ifndef __bool_true_false_are_defined
+#define false (1==0)
+#define true (1==1)
 #endif
 #endif
 #ifndef PASS
@@ -998,14 +998,14 @@ typedef U8                  Byte;       //!< 8-bit unsigned integer.
 #endif  // #ifndef __ASSEMBLY__
 
 
-#if defined(__ICCARM__)
+#ifdef __ICCARM__
 #define SHORTENUM           __packed
 #elif defined(__GNUC__)
 #define SHORTENUM           __attribute__((packed))
 #endif
 
 /* No operation */
-#if defined(__ICCARM__)
+#ifdef __ICCARM__
 #define nop()               __no_operation()
 #elif defined(__GNUC__)
 #define nop()               (__NOP())

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef _CONF_ACCESS_H_

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef CONF_CLOCK_H_INCLUDED

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

@@ -41,16 +41,14 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef _CONF_USB_H_
 #define _CONF_USB_H_
 
 #undef UNUSED                           /* To avoid a macro clash as macros.h already defines it */
-#include "../../../core/macros.h"       /* For ENABLED()/DISABLED() */
-#include "../../../core/boards.h"       /* For MB() */
-#include "../../../../Configuration.h"  /* For CUSTOM_MACHINE_NAME definition - We just need the name, no C++ allowed! */
+#include "../../../inc/MarlinConfigPre.h"
 #include "compiler.h"
 
 /**
@@ -59,8 +57,6 @@
  */
 
 //! Device definition (mandatory)
-#define  USB_DEVICE_VENDOR_ID             0x03EB /* ATMEL VID */
-#define  USB_DEVICE_PRODUCT_ID            0x2424 /* MSC / CDC */
 #define  USB_DEVICE_MAJOR_VERSION         1
 #define  USB_DEVICE_MINOR_VERSION         0
 #define  USB_DEVICE_POWER                 100 // Consumption on Vbus line (mA)
@@ -70,15 +66,6 @@
 //  (USB_CONFIG_ATTR_REMOTE_WAKEUP|USB_CONFIG_ATTR_SELF_POWERED)
 //  (USB_CONFIG_ATTR_REMOTE_WAKEUP|USB_CONFIG_ATTR_BUS_POWERED)
 
-//! USB Device string definitions (Optional)
-#define  USB_DEVICE_MANUFACTURE_NAME      "marlinfw.org"
-#ifdef CUSTOM_MACHINE_NAME
-  #define  USB_DEVICE_PRODUCT_NAME        CUSTOM_MACHINE_NAME
-#else
-  #define  USB_DEVICE_PRODUCT_NAME        "3D Printer"
-#endif
-#define  USB_DEVICE_SERIAL_NAME           "123985739853"
-
 /**
  * Device speeds support
  * Low speed not supported by CDC and MSC
@@ -91,10 +78,6 @@
 //! To define a Full speed device
 //#define USB_DEVICE_FULL_SPEED
 
-#if MB(ARCHIM1)
-  #define USB_DEVICE_FULL_SPEED
-#endif
-
 //! To authorize the High speed
 #ifndef USB_DEVICE_FULL_SPEED
   #if (UC3A3||UC3A4)

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

@@ -53,7 +53,7 @@
  *
  ******************************************************************************/
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifdef ARDUINO_ARCH_SAM

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

@@ -53,7 +53,7 @@
  *
  ******************************************************************************/
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef CHIP_GENCLK_H_INCLUDED

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef _MREPEAT_H_

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef CHIP_OSC_H_INCLUDED
@@ -61,27 +61,27 @@ extern "C" {
  * Below BOARD_XXX macros are related to the specific board, and
  * should be defined by the board code, otherwise default value are used.
  */
-#if !defined(BOARD_FREQ_SLCK_XTAL)
+#ifndef BOARD_FREQ_SLCK_XTAL
 #  warning The board slow clock xtal frequency has not been defined.
 #  define BOARD_FREQ_SLCK_XTAL      (32768UL)
 #endif
 
-#if !defined(BOARD_FREQ_SLCK_BYPASS)
+#ifndef BOARD_FREQ_SLCK_BYPASS
 #  warning The board slow clock bypass frequency has not been defined.
 #  define BOARD_FREQ_SLCK_BYPASS    (32768UL)
 #endif
 
-#if !defined(BOARD_FREQ_MAINCK_XTAL)
+#ifndef BOARD_FREQ_MAINCK_XTAL
 #  warning The board main clock xtal frequency has not been defined.
 #  define BOARD_FREQ_MAINCK_XTAL    (12000000UL)
 #endif
 
-#if !defined(BOARD_FREQ_MAINCK_BYPASS)
+#ifndef BOARD_FREQ_MAINCK_BYPASS
 #  warning The board main clock bypass frequency has not been defined.
 #  define BOARD_FREQ_MAINCK_BYPASS  (12000000UL)
 #endif
 
-#if !defined(BOARD_OSC_STARTUP_US)
+#ifndef BOARD_OSC_STARTUP_US
 #  warning The board main clock xtal startup time has not been defined.
 #  define BOARD_OSC_STARTUP_US      (15625UL)
 #endif

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef CHIP_PLL_H_INCLUDED

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef _PREPROCESSOR_H_

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

@@ -52,7 +52,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 #ifndef _SBC_PROTOCOL_H_
 #define _SBC_PROTOCOL_H_

Marlin/src/HAL/DUE/usb/sd_mmc_spi_mem.cpp

@@ -15,11 +15,14 @@ extern "C" {
 
 #define SD_MMC_BLOCK_SIZE 512
 
-void sd_mmc_spi_mem_init(void) {
+void sd_mmc_spi_mem_init() {
 }
 
-Ctrl_status sd_mmc_spi_test_unit_ready(void) {
-  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isDetected())
+Ctrl_status sd_mmc_spi_test_unit_ready() {
+  #ifdef DISABLE_DUE_SD_MMC
+    return CTRL_NO_PRESENT;
+  #endif
+  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isMounted())
     return CTRL_NO_PRESENT;
   return CTRL_GOOD;
 }
@@ -27,25 +30,18 @@ Ctrl_status sd_mmc_spi_test_unit_ready(void) {
 // NOTE: This function is defined as returning the address of the last block
 // in the card, which is cardSize() - 1
 Ctrl_status sd_mmc_spi_read_capacity(uint32_t *nb_sector) {
-  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isDetected())
+  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isMounted())
     return CTRL_NO_PRESENT;
   *nb_sector = card.getSd2Card().cardSize() - 1;
   return CTRL_GOOD;
 }
 
-bool sd_mmc_spi_unload(bool unload) {
-  UNUSED(unload);
-  return true;
-}
+bool sd_mmc_spi_unload(bool) { return true; }
 
-bool sd_mmc_spi_wr_protect(void) {
-  return false;
-}
+bool sd_mmc_spi_wr_protect() { return false; }
 
-bool sd_mmc_spi_removal(void) {
-  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isDetected())
-    return true;
-  return false;
+bool sd_mmc_spi_removal() {
+  return (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isMounted());
 }
 
 #if ACCESS_USB == true
@@ -62,7 +58,10 @@ uint8_t sector_buf[SD_MMC_BLOCK_SIZE];
 // #define DEBUG_MMC
 
 Ctrl_status sd_mmc_spi_usb_read_10(uint32_t addr, uint16_t nb_sector) {
-  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isDetected())
+  #ifdef DISABLE_DUE_SD_MMC
+    return CTRL_NO_PRESENT;
+  #endif
+  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isMounted())
     return CTRL_NO_PRESENT;
 
   #ifdef DEBUG_MMC
@@ -99,7 +98,10 @@ Ctrl_status sd_mmc_spi_usb_read_10(uint32_t addr, uint16_t nb_sector) {
 }
 
 Ctrl_status sd_mmc_spi_usb_write_10(uint32_t addr, uint16_t nb_sector) {
-  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isDetected())
+  #ifdef DISABLE_DUE_SD_MMC
+    return CTRL_NO_PRESENT;
+  #endif
+  if (!IS_SD_INSERTED() || IS_SD_PRINTING() || IS_SD_FILE_OPEN() || !card.isMounted())
     return CTRL_NO_PRESENT;
 
   #ifdef DEBUG_MMC

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

@@ -42,7 +42,7 @@
  *
  ******************************************************************************/
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 

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

@@ -43,12 +43,12 @@
  * \asf_license_stop
  *
  */
-/*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
- */
-#ifndef  _SPC_PROTOCOL_H_
-#define  _SPC_PROTOCOL_H_
 
+/*
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
+ */
+#ifndef _SPC_PROTOCOL_H_
+#define _SPC_PROTOCOL_H_
 
 /**
  * \ingroup usb_msc_protocol

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifndef _STRINGZ_H_

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

@@ -41,7 +41,7 @@
  *
  */
 /*
- * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
+ * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a>
  */
 
 #ifdef ARDUINO_ARCH_SAM