Update Configuration_adv.h

Co-authored-by: Scott Lahteine <github@thinkyhead.com>

.gitignore

@@ -19,9 +19,9 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #
 
-# Our automatic versioning scheme generates the following file
+# Generated files
-# NEVER put it in the repository
 _Version.h
+bdf2u8g
 
 #
 # OS

Marlin/Makefile

@@ -323,6 +323,8 @@ else ifeq ($(HARDWARE_MOTHERBOARD),1203)
 else ifeq ($(HARDWARE_MOTHERBOARD),1204)
 # abee Scoovo X9H
 else ifeq ($(HARDWARE_MOTHERBOARD),1205)
+# Rambo ThinkerV2
+else ifeq ($(HARDWARE_MOTHERBOARD),1206)
 
 #
 # Other ATmega1280, ATmega2560

Marlin/Version.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
@@ -28,25 +28,25 @@
 /**
  * Marlin release version identifier
  */
-#define SHORT_BUILD_VERSION "2.0.7_SX1"
+//#define SHORT_BUILD_VERSION "bugfix-2.0.x"
 
 /**
  * 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 " TM3D"
+//#define DETAILED_BUILD_VERSION SHORT_BUILD_VERSION
 
 /**
  * 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 "2021-01-03"
+//#define STRING_DISTRIBUTION_DATE "2019-07-10"
 
 /**
  * Defines a generic printer name to be output to the LCD after booting Marlin.
  */
-#define MACHINE_NAME "TM3D SX4"
+//#define MACHINE_NAME "3D Printer"
 
 /**
  * The SOURCE_CODE_URL is the location where users will find the Marlin Source
@@ -54,7 +54,7 @@
  * has a distinct Github fork— the Source Code URL should just be the main
  * Marlin repository.
  */
-#define SOURCE_CODE_URL "https://github.com/InsanityAutomation/Marlin/tree/TM_SX4_2.0"
+//#define SOURCE_CODE_URL "github.com/MarlinFirmware/Marlin"
 
 /**
  * Default generic printer UUID.
@@ -65,7 +65,7 @@
  * The WEBSITE_URL is the location where users can get more information such as
  * documentation about a specific Marlin release.
  */
-#define WEBSITE_URL "tinymachines3d.com"
+//#define WEBSITE_URL "marlinfw.org"
 
 /**
  * Set the vendor info the serial USB interface, if changable

Marlin/_Bootscreen.h

@@ -29,65 +29,75 @@
  *  - 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  128
+#define CUSTOM_BOOTSCREEN_BMPWIDTH  125
-#define CUSTOM_BOOTSCREEN_INVERTED
+//#define CUSTOM_BOOTSCREEN_INVERTED
 
 const unsigned char custom_start_bmp[] PROGMEM = {
-  B11111101,B01010101,B01010101,B01010101,B01010101,B01010101,B01011111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // ..............................................................##................................................................
-  B11111110,B00000000,B00000000,B00000000,B00000000,B00000000,B00111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // ..............................................................##.##.............................................................
-  B11111101,B00000000,B00000000,B00000111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x88,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // ................................................................#...#...........................................................
-  B11111110,B00000111,B11000000,B00000101,B01010101,B01010101,B01010101,B01010101,B01010101,B01011111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE7,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // ................................................................###..###........................................................
-  B11111100,B00001010,B00100000,B00000110,B00000000,B00000000,B00000000,B00000000,B00000000,B00111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x71,0x80,0x00,0x00,0x00,0x00,0x00,0x00, // .................................................................###...##.......................................................
-  B11111110,B00010100,B00010000,B00000101,B00000000,B00000000,B00000111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x30,0x40,0x00,0x00,0x00,0x00,0x00,0x00, // ..................................................................##.....#......................................................
-  B11111100,B00101000,B00001000,B00000110,B00000111,B11000000,B00000101,B01010101,B01010101,B01010101,B01010101,B01010101,B01011111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,0x20,0x00,0x00,0x00,0x00,0x00,0x00, // ..................................................................####....#.....................................................
-  B11111110,B01010100,B00000100,B00000100,B00001010,B00100000,B00000110,B00000000,B00000000,B00000000,B00000000,B00000000,B00111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x20,0x00,0x00,0x00,0x00,0x00,0x00, // ................................................................########..#.....................................................
-  B11111100,B01100000,B00000100,B00000110,B00010100,B00010000,B00000101,B00000000,B00000000,B00000111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x01,0xF8,0x00,0x87,0xF8,0x00,0x00,0x00,0x00,0x00,0x00, // ...............................................######...........#....########...................................................
-  B11111110,B01010000,B00000100,B00000100,B00101000,B00001000,B00000110,B00000111,B11000000,B00000101,B01010101,B01010101,B01010101,B01010101,B01010101,B01011111,
+  0x00,0x00,0x00,0x00,0x00,0x03,0x0C,0x00,0x83,0xE0,0x00,0x00,0x00,0x00,0x00,0x00, // ..............................................##....##..........#.....#####.....................................................
-  B11111100,B01100000,B00000100,B00000110,B01010100,B00000100,B00000100,B00001010,B00100000,B00000110,B00000000,B00000000,B00000000,B00000000,B00000000,B00111111,
+  0x00,0x00,0x00,0x00,0x00,0x06,0x0C,0x00,0x81,0xC0,0x00,0x00,0x00,0x00,0x00,0x00, // .............................................##.....##..........#......###......................................................
-  B11111110,B01010100,B00000100,B00011100,B01100000,B00000100,B00000110,B00010100,B00010000,B00000101,B00000000,B00000000,B00000000,B00000000,B00000000,B00011111,
+  0x00,0x00,0x00,0x00,0x00,0x0C,0x06,0x00,0x80,0xE3,0x00,0x00,0x00,0x00,0x00,0x00, // ............................................##.......##.........#.......###...##................................................
-  B11111100,B00101000,B00001000,B00101110,B01010000,B00000100,B00000100,B00101000,B00001000,B00000110,B00000111,B11000000,B00000000,B00000001,B11110000,B00111111,
+  0x00,0x00,0x00,0x00,0x00,0x18,0x06,0x00,0x80,0x6F,0x80,0x00,0x00,0x00,0x00,0x00, // ...........................................##........##.........#........##.#####...............................................
-  B11111110,B00010100,B00010000,B01010100,B01100000,B00000100,B00000110,B01010100,B00000100,B00000100,B00001010,B00100000,B00000000,B00000010,B00001000,B00011111,
+  0x00,0x00,0x00,0x00,0x1C,0x38,0x02,0x00,0x80,0x3C,0xC0,0x00,0x00,0x00,0x00,0x00, // ...................................###....###.........#.........#.........####..##..............................................
-  B11111100,B00001010,B00100000,B01100110,B01010100,B00000100,B00011100,B01100000,B00000100,B00000110,B00010100,B00010000,B00000000,B00000101,B00000100,B00111111,
+  0x00,0x00,0x00,0x00,0x1F,0x30,0x03,0x00,0xC0,0x3C,0x60,0x00,0x00,0x00,0x00,0x00, // ...................................#####..##..........##........##........####...##.............................................
-  B11111110,B00000111,B11000000,B01010100,B00101000,B00001000,B00101110,B01010000,B00000100,B00000100,B00101000,B00001000,B00000000,B00001010,B00000010,B00011111,
+  0x00,0x00,0x00,0x00,0x77,0xB0,0x02,0xFF,0x60,0x3C,0x30,0x00,0x00,0x00,0x00,0x00, // .................................###.####.##..........#.########.##.......####....##............................................
-  B11111100,B00000000,B00000000,B00101110,B00010100,B00010000,B01010100,B01100000,B00000100,B00000110,B01010100,B00000100,B00000000,B00010101,B00000001,B00111111,
+  0x00,0x00,0x00,0x00,0xE0,0xF8,0x06,0xFF,0xB0,0x3C,0x18,0x00,0x00,0x00,0x00,0x00, // ................................###.....#####........##.#########.##......####.....##...........................................
-  B11111110,B00000000,B00000000,B00011100,B00001010,B00100000,B01100110,B01010100,B00000100,B00011100,B01100000,B00000100,B00000000,B00011000,B00000001,B00011111,
+  0x00,0x00,0x00,0x00,0xC0,0xD8,0x0D,0x81,0x98,0x1C,0x08,0x00,0x00,0x00,0x00,0x00, // ................................##......##.##.......##.##......##..##......###......#...........................................
-  B11111100,B00000000,B00000000,B00000110,B00000111,B11000000,B01010100,B00101000,B00001000,B00101110,B01010000,B00000100,B00000000,B00010100,B00000001,B00111111,
+  0x00,0x00,0x00,0x03,0x80,0xD8,0x09,0x80,0xDC,0xFC,0x08,0x00,0x00,0x00,0x00,0x00, // ..............................###.......##.##.......#..##.......##.###..######......#...........................................
-  B11111110,B00000000,B00000000,B00000100,B00000000,B00000000,B00101110,B00010100,B00010000,B01010100,B01100000,B00000100,B00000000,B00011000,B00000001,B00011111,
+  0x00,0x00,0x00,0x02,0x00,0xD8,0x1B,0x00,0x6F,0xE4,0x0C,0x00,0x00,0x00,0x00,0x00, // ..............................#.........##.##......##.##.........##.#######..#......##..........................................
-  B11111100,B11111111,B11111111,B11111110,B00000000,B00000000,B00011100,B00001010,B00100000,B01100110,B01010100,B00000100,B00011100,B00010101,B00000001,B00111111,
+  0x00,0x00,0x00,0x02,0x00,0xDF,0xFB,0x00,0x37,0x06,0x0C,0x00,0x00,0x00,0x00,0x00, // ..............................#.........##.##########.##..........##.###.....##.....##..........................................
-  B11111110,B11010101,B01010101,B01010100,B00000000,B00000000,B00000110,B00000111,B11000000,B01010100,B00101000,B00001000,B00101010,B00001010,B00000010,B00011111,
+  0x00,0x00,0x00,0x06,0x00,0xE7,0xF6,0x00,0x18,0x03,0x04,0x00,0x00,0x00,0x00,0x00, // .............................##.........###..#######.##............##.........##.....#..........................................
-  B11111100,B10000100,B00010000,B01000110,B00000000,B00000000,B00000100,B00000000,B00000000,B00101110,B00010100,B00010000,B01010001,B00000101,B00000100,B00111111,
+  0x00,0x00,0x00,0x06,0x00,0xE0,0x0E,0x00,0x18,0x0F,0x04,0x00,0x00,0x00,0x00,0x00, // .............................##.........###.........###............##.......####.....#..........................................
-  B11111110,B11000100,B00010000,B01000100,B11111111,B11111111,B11111110,B00000000,B00000000,B00011100,B00001010,B00100000,B01100001,B00000010,B10001000,B00011111,
+  0x00,0x00,0x00,0x06,0x00,0xC0,0x2E,0x00,0x1B,0xFF,0xC6,0x00,0x00,0x00,0x00,0x00, // .............................##.........##........#.###............##.############...##.........................................
-  B11111100,B10000100,B00010000,B01000110,B11010101,B01010101,B01010100,B00000000,B00000000,B00000110,B00000111,B11000000,B01010001,B00000001,B11110000,B00111111,
+  0x3F,0xFC,0x1F,0xF6,0x7D,0x81,0xE6,0x00,0x1B,0xC7,0xC6,0x00,0x00,0x00,0x00,0x00, // ..############.....#########.##..#####.##......####..##............##.####...#####...##.........................................
-  B11111110,B10000100,B00010000,B01000100,B10000100,B00010000,B01000110,B00000000,B00000000,B00000100,B00000000,B00000000,B00101010,B00000000,B00000000,B00011111,
+  0x7F,0xFE,0x3F,0xFF,0x1F,0x8F,0xC3,0xFF,0xFF,0xFF,0xFC,0x1F,0xFF,0x38,0x03,0xC0, // .##############...##############...######...######....################################.....#############..###.........####......
-  B11111100,B11000100,B00010000,B01000110,B11000100,B00010000,B01000100,B11111111,B11111111,B11111110,B00000000,B00000000,B00011100,B00000000,B00000000,B00111111,
+  0xFF,0xFF,0xFF,0xFF,0x8F,0x1F,0xC7,0xFF,0xFF,0xFF,0xF8,0xFF,0xFF,0x3C,0x03,0xE0, // #################################...####...#######...################################...################..####........#####.....
-  B11111110,B10000100,B00010000,B01000100,B10000100,B00010000,B01000110,B11010101,B01010101,B01010100,B00000000,B00000000,B00000000,B00000000,B00000000,B00011111,
+  0x10,0x0F,0xF0,0x0F,0x8F,0xFF,0x83,0xFF,0xF7,0xFF,0xF8,0xFF,0xFC,0x3C,0x03,0xE0, // ...#........########........#####...#############.....##############.################...##############....####........#####.....
-  B11111100,B11010101,B01010101,B01010110,B10000100,B00010000,B01000100,B10000100,B00010000,B01000110,B00000000,B00000000,B00000000,B00000000,B00000000,B00111111,
+  0x00,0x0F,0xF0,0x07,0xFF,0xFF,0x01,0x9E,0x27,0xFC,0xC2,0xF8,0x00,0x3E,0x03,0xE0, // ............########.........###################.......##..####...#..#########..##....#.#####.............#####.......#####.....
-  B11111100,B11111111,B11111111,B11111100,B11000100,B00010000,B01000110,B11000100,B00010000,B01000100,B11111111,B11111111,B11111111,B11111111,B11111111,B10011111,
+  0x0F,0xFF,0xF0,0x03,0xDF,0xFE,0x01,0xCE,0x6C,0xFC,0x47,0xF8,0x00,0x3F,0xFF,0xE0, // ....################..........####.############........###..###..##.##..######...#...########.............#################.....
-  B11111110,B00000000,B00000000,B00000110,B10000100,B00010000,B01000100,B10000100,B00010000,B01000110,B11010101,B01010101,B01010101,B01010101,B01010101,B10111111,
+  0x1F,0xFF,0xF0,0x03,0xC3,0xFC,0x00,0xFF,0xCC,0xFF,0xFF,0xF0,0x00,0x3F,0xFF,0xE0, // ...#################..........####....########..........##########..##..####################..............#################.....
-  B11111101,B01010101,B01010101,B01010100,B11010101,B01010101,B01010110,B10000100,B00010000,B01000100,B10000100,B00010000,B01000001,B00000100,B00010000,B10011111,
+  0x1F,0xFF,0xF0,0x03,0xC3,0xFC,0x00,0x0E,0x1C,0xFF,0xF9,0xE0,0x00,0x3F,0xFF,0xE0, // ...#################..........####....########..............###....###..#############..####...............#################.....
-  B11111111,B11111111,B11111111,B11111100,B11111111,B11111111,B11111100,B11000100,B00010000,B01000110,B11000100,B00010000,B01000001,B00000100,B00010001,B10111111,
+  0x00,0x0F,0xF0,0x0F,0xC7,0xFC,0x00,0x0E,0x1C,0xFF,0xF1,0xE0,0x00,0x3F,0xFF,0xE0, // ............########........######...#########..............###....###..############...####...............#################.....
-  B11111111,B11111111,B11111111,B11111110,B00000000,B00000000,B00000110,B10000100,B00010000,B01000100,B10000100,B00010000,B01000001,B00000100,B00010000,B10011111,
+  0x00,0x0F,0xF8,0x0F,0x87,0xFE,0x00,0x0E,0x0C,0xF8,0xF0,0xF0,0x00,0x3C,0x03,0xE0, // ............#########.......#####....##########.............###.....##..#####...####....####..............####........#####.....
-  B11111111,B11111111,B11111111,B11111101,B01010101,B01010101,B01010100,B11010101,B01010101,B01010110,B10000100,B00010000,B01000001,B00000100,B00010000,B10011111,
+  0x7F,0xFF,0xFF,0xFF,0xBF,0x8F,0x00,0x3F,0xE6,0xF8,0xE0,0xFC,0x00,0x3C,0x03,0xE0, // .################################.#######...####..........#########..##.#####...###.....######............####........#####.....
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111100,B11111111,B11111111,B11111100,B11000100,B00010000,B01000001,B00000100,B00010001,B10111111,
+  0x7F,0xFF,0xFF,0xFF,0xFF,0x07,0xC0,0xFF,0xE7,0xFF,0xFC,0xFF,0xFF,0x3C,0x03,0xE0, // .#######################################.....#####......###########..#################..################..####........#####.....
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111110,B00000000,B00000000,B00000110,B10000100,B00010000,B01000001,B00000100,B00010000,B10011111,
+  0xFF,0xFF,0xFF,0xFF,0xFE,0x03,0xE0,0x8E,0x33,0xFF,0xFC,0x1F,0xFF,0x3C,0x03,0xE0, // #######################################.......#####.....#...###...##..################.....#############..####........#####.....
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111101,B01010101,B01010101,B01010100,B11010101,B01010101,B01010101,B01010101,B01010101,B10111111,
+  0x7F,0xFC,0x3F,0xF0,0x3C,0x01,0xF1,0x9E,0x31,0xFF,0xF9,0x0F,0xFE,0x3C,0x03,0xC0, // .#############....##########......####.........#####...##..####...##...##############..#....###########...####........####......
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111100,B11111111,B11111111,B11111111,B11111111,B11111111,B10011111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x19,0xFF,0xC1,0x00,0x00,0x00,0x00,0x00, // ......................................................##...........##..###########.....#........................................
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111110,B00000000,B00000000,B00000000,B00000000,B00000000,B00111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x0C,0xE0,0xC1,0x00,0x00,0x00,0x00,0x00, // ......................................................##............##..###.....##.....#........................................
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111101,B01010101,B01010101,B01010101,B01010101,B01010101,B01011111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x00,0x0C,0x00,0x42,0x00,0x00,0x00,0x00,0x00, // .....................................................##.............##...........#....#.........................................
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x06,0x00,0x06,0x01,0x62,0x00,0x00,0x00,0x00,0x00, // .....................................................##..............##........#.##...#.........................................
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x00,0x0C,0x00,0x06,0x3F,0x62,0x00,0x00,0x00,0x00,0x00, // ....................................................##...............##...######.##...#.........................................
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x38,0x0E,0x00,0x0D,0xFD,0xEE,0x00,0x00,0x00,0x00,0x00, // ..........................................###.......###.............##.#######.####.###.........................................
-  B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00,0x00,0x7F,0xE6,0x00,0x19,0x81,0xFC,0x00,0x00,0x00,0x00,0x00, // .........................................##########..##............##..##......#######..........................................
-  B11100000,B00101110,B11111011,B01111101,B11111011,B11111011,B11001111,B11000001,B11011111,B10111011,B00111110,B11000000,B11100001,B11111110,B00111100,B00011111,
+  0x00,0x00,0x00,0x00,0x00,0xEF,0xF7,0x00,0x1B,0x01,0xF0,0x00,0x00,0x00,0x00,0x00, // ........................................###.########.###...........##.##.......#####............................................
-  B11111101,B11101110,B01111011,B00111001,B11111001,B11110011,B11001111,B10011110,B11011111,B10111011,B00111110,B11011111,B11011110,B11111100,B11011101,B11100111,
+  0x00,0x00,0x00,0x00,0x00,0xC0,0x33,0x00,0x33,0x01,0xC8,0x00,0x00,0x00,0x00,0x00, // ........................................##........##..##..........##..##.......###..#...........................................
-  B11111101,B11101110,B00111011,B10111011,B11111001,B11101011,B11010111,B10111111,B01011111,B10111011,B01011110,B11011111,B11011110,B11111101,B11101101,B11110111,
+  0x00,0x00,0x00,0x00,0x00,0x80,0x1B,0x00,0x36,0x01,0x98,0x00,0x00,0x00,0x00,0x00, // ........................................#..........##.##..........##.##........##..##...........................................
-  B11111101,B11101110,B10111011,B11010011,B11111010,B11101011,B10110111,B00111111,B11011111,B10111011,B01001110,B11011111,B11011111,B11111111,B11001101,B11110011,
+  0x00,0x00,0x00,0x00,0x01,0x80,0x0D,0xFF,0xEC,0x01,0xF0,0x00,0x00,0x00,0x00,0x00, // .......................................##...........##.############.##.........#####............................................
-  B11111101,B11101110,B11011011,B11000111,B11111010,B11101011,B10111011,B01111111,B11000000,B00111011,B01101110,B11000000,B11100011,B11111111,B00011101,B11110011,
+  0x00,0x00,0x00,0x00,0x01,0x00,0x0E,0xFF,0xD8,0x01,0xE0,0x00,0x00,0x00,0x00,0x00, // .......................................#............###.##########.##..........####.............................................
-  B11111101,B11101110,B11001011,B11101111,B11111010,B11011011,B10111011,B01111111,B11011111,B10111011,B01100110,B11011111,B11111000,B11111111,B11001101,B11110011,
+  0x00,0x00,0x00,0x01,0xF1,0x80,0x06,0x60,0x38,0x07,0xA0,0x00,0x00,0x00,0x00,0x00, // ...............................#####...##............##..##.......###........####.#.............................................
-  B11111101,B11101110,B11101011,B11101111,B11111011,B01011011,B00000011,B00111111,B01011111,B10111011,B01110110,B11011111,B11111110,B01111111,B11101101,B11110011,
+  0x00,0x00,0x00,0x01,0xFD,0x80,0x03,0x00,0x18,0x05,0x40,0x00,0x00,0x00,0x00,0x00, // ...............................#######.##.............##...........##........#.#.#..............................................
-  B11111101,B11101110,B11110011,B11101111,B11111011,B01011011,B01111001,B10111110,B11011111,B10111011,B01111010,B11011111,B11011110,B01111101,B11101101,B11110111,
+  0x00,0x00,0x00,0x01,0x8F,0xC0,0x06,0xFF,0xDC,0x0A,0x80,0x00,0x00,0x00,0x00,0x00, // ...............................##...######...........##.##########.###......#.#.#...............................................
-  B11111101,B11101110,B11110011,B11101111,B11111011,B10111010,B11111101,B10011110,B11011111,B10111011,B01111100,B11011111,B11011110,B11111101,B11001101,B11100111,
+  0x00,0x00,0x00,0x00,0x81,0xE0,0x0C,0xFF,0xCC,0x1F,0x00,0x00,0x00,0x00,0x00,0x00, // ................................#......####.........##..##########..##.....#####................................................
-  B11111101,B11101110,B11111011,B11101111,B11111011,B10111010,B11111101,B11000001,B11011111,B10111011,B01111110,B11000000,B11100000,B11111110,B00011100,B00011111
+  0x00,0x00,0x00,0x00,0x81,0xF0,0x0D,0x80,0x6C,0xFE,0x00,0x00,0x00,0x00,0x00,0x00, // ................................#......#####........##.##........##.##..#######.................................................
+  0x00,0x00,0x00,0x00,0x40,0xFE,0x1B,0x00,0x67,0x8C,0x00,0x00,0x00,0x00,0x00,0x00, // .................................#......#######....##.##.........##..####...##..................................................
+  0x00,0x00,0x00,0x00,0x20,0x7F,0xF6,0x00,0x20,0x18,0x00,0x00,0x00,0x00,0x00,0x00, // ..................................#......###########.##...........#........##...................................................
+  0x00,0x00,0x00,0x00,0x10,0x30,0x6E,0x00,0x3F,0xF0,0x00,0x00,0x00,0x00,0x00,0x00, // ...................................#......##.....##.###...........##########....................................................
+  0x00,0x00,0x00,0x00,0x04,0x30,0x0E,0x00,0xFF,0xA0,0x00,0x00,0x00,0x00,0x00,0x00, // .....................................#....##........###.........#########.#.....................................................
+  0x00,0x00,0x00,0x00,0x03,0x30,0x06,0x00,0xE1,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // ......................................##..##.........##.........###....#........................................................
+  0x00,0x00,0x00,0x00,0x01,0xF0,0x03,0x03,0xE2,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // .......................................#####..........##......#####...#.........................................................
+  0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFF,0x88,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // .......................................................##########...#...........................................................
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00, // ..............................................................#...##............................................................
+  0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00  // .............................................................###................................................................
 };

Marlin/_Statusscreen.h

@@ -33,42 +33,40 @@
 //
 // Status Screen Logo bitmap
 //
-#define STATUS_LOGO_Y            3
+#define STATUS_LOGO_Y            1
-#define STATUS_LOGO_WIDTH       24
+#define STATUS_LOGO_WIDTH       32
 
 const unsigned char status_logo_bmp[] PROGMEM = {
-  B11111111,B11111111,B11111111,
+  0x00,0x00,0x00,0x00, // ................................
-  B10000000,B00000000,B00000001,
+  0x00,0x00,0x00,0x00, // ................................
-  B10001110,B00000000,B11100001,
+  0x00,0x00,0x00,0x00, // ................................
-  B10011111,B00000001,B11110001,
+  0x00,0x00,0x10,0x00, // ...................#............
-  B10010011,B10000001,B00111001,
+  0x00,0x00,0x06,0x00, // .....................##.........
-  B10011111,B10000001,B11111001,
+  0x00,0x00,0x00,0x00, // ................................
-  B10011111,B10000001,B11111001,
+  0x01,0x00,0x00,0x00, // .......#........................
-  B10011111,B10111001,B11111001,
+  0x08,0x00,0x01,0x00, // ....#..................#........
-  B10001111,B00101000,B11110001,
+  0x01,0x00,0x41,0x00, // .......#.........#.....#........
-  B10000000,B00111000,B00000001,
+  0x01,0x00,0x02,0x00, // .......#..............#.........
-  B10000000,B00000000,B00000001,
+  0x00,0xE0,0x00,0x00, // ........###.....................
-  B10011111,B11111111,B11111001,
+  0x80,0x08,0x10,0x80, // #...........#......#....#.......
-  B10010001,B01110100,B10011001,
+  0x04,0x00,0x00,0x40, // .....#...................#......
-  B10011011,B00000110,B10101001,
+  0x08,0x00,0x08,0x00, // ....#...............#...........
-  B10011011,B01010100,B10101001,
+  0x10,0x04,0x00,0x00, // ...#.........#..................
-  B10011011,B01010110,B10101001,
+  0x00,0x00,0x00,0x30, // ..........................##....
-  B10011011,B01010100,B10011001,
+  0x00,0x00,0x00,0x20, // ..........................#.....
-  B10011111,B11111111,B11111001,
+  0x00,0x01,0xE8,0x20, // ...............####.#.....#.....
-  B11111111,B11111111,B11111111
+  0x00,0x00,0x00,0x60, // .........................##.....
+  0x00,0x00,0x02,0x00, // ......................#.........
+  0x00,0x08,0x00,0x00, // ............#...................
+  0x00,0x00,0x01,0x20, // .......................#..#.....
+  0x02,0xE8,0x10,0x60, // ......#.###.#......#.....##.....
+  0x00,0x00,0x00,0x40, // .........................#......
+  0x00,0x03,0xC0,0x60, // ..............####.......##.....
+  0x64,0x00,0x10,0x00, // .##..#.............#............
+  0x04,0x03,0xC0,0x00, // .....#........####..............
+  0x02,0x00,0x20,0x00, // ......#...........#.............
+  0x00,0x28,0x00,0x00, // ..........#.#...................
+  0x00,0x08,0x20,0x00, // ............#.....#.............
+  0x00,0x00,0x40,0x00, // .................#..............
+  0x00,0x00,0x00,0x00  // ................................
 };
-
-//
-// Use default bitmaps
-//
-#define STATUS_HOTEND_ANIM
-#define STATUS_BED_ANIM
-#if HOTENDS < 2
-  #define STATUS_LOGO_X          8
-  #define STATUS_HEATERS_X      40
-  #define STATUS_BED_X          72
-#else
-  #define STATUS_LOGO_X          0
-  #define STATUS_HEATERS_X      32
-  #define STATUS_BED_X          80
-#endif

Marlin/src/HAL/AVR/HAL.cpp

@@ -24,6 +24,13 @@
 #include "../../inc/MarlinConfig.h"
 #include "HAL.h"
 
+#ifdef USBCON
+  DefaultSerial1 MSerial0(false, Serial);
+  #ifdef BLUETOOTH
+    BTSerial btSerial(false, bluetoothSerial);
+  #endif
+#endif
+
 // ------------------------
 // Public Variables
 // ------------------------

Marlin/src/HAL/AVR/HAL.h

@@ -82,21 +82,36 @@ typedef int8_t pin_t;
 
 // Serial ports
 #ifdef USBCON
-  #define MYSERIAL0 TERN(BLUETOOTH, bluetoothSerial, Serial)
+  #include "../../core/serial_hook.h"
+  typedef ForwardSerial1Class< decltype(Serial) > DefaultSerial1;
+  extern DefaultSerial1 MSerial0;
+  #ifdef BLUETOOTH
+    typedef ForwardSerial1Class< decltype(bluetoothSerial) > BTSerial;
+    extern BTSerial btSerial;
+  #endif
+
+  #define MYSERIAL1 TERN(BLUETOOTH, btSerial, MSerial0)
 #else
   #if !WITHIN(SERIAL_PORT, -1, 3)
     #error "SERIAL_PORT must be from -1 to 3. Please update your configuration."
   #endif
-  #define MYSERIAL0 customizedSerial1
+  #define MYSERIAL1 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."
     #endif
-    #define MYSERIAL1 customizedSerial2
+    #define MYSERIAL2 customizedSerial2
   #endif
 #endif
 
+#ifdef MMU2_SERIAL_PORT
+  #if !WITHIN(MMU2_SERIAL_PORT, -1, 3)
+    #error "MMU2_SERIAL_PORT must be from -1 to 3. Please update your configuration."
+  #endif
+  #define MMU2_SERIAL mmuSerial
+#endif
+
 #ifdef LCD_SERIAL_PORT
   #if !WITHIN(LCD_SERIAL_PORT, -1, 3)
     #error "LCD_SERIAL_PORT must be from -1 to 3. Please update your configuration."

Marlin/src/HAL/AVR/MarlinSerial.cpp

@@ -454,7 +454,7 @@ void MarlinSerial<Cfg>::flush() {
 }
 
 template<typename Cfg>
-void MarlinSerial<Cfg>::write(const uint8_t c) {
+size_t MarlinSerial<Cfg>::write(const uint8_t c) {
   if (Cfg::TX_SIZE == 0) {
 
     _written = true;
@@ -480,7 +480,7 @@ void MarlinSerial<Cfg>::write(const uint8_t c) {
       // location". This makes sure flush() won't return until the bytes
       // actually got written
       B_TXC = 1;
-      return;
+      return 1;
     }
 
     const uint8_t i = (tx_buffer.head + 1) & (Cfg::TX_SIZE - 1);
@@ -510,6 +510,7 @@ void MarlinSerial<Cfg>::write(const uint8_t c) {
     // Enable TX ISR - Non atomic, but it will eventually enable TX ISR
     B_UDRIE = 1;
   }
+  return 1;
 }
 
 template<typename Cfg>
@@ -556,161 +557,6 @@ void MarlinSerial<Cfg>::flushTX() {
   }
 }
 
-/**
- * Imports from print.h
- */
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(char c, int base) {
-  print((long)c, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(unsigned char b, int base) {
-  print((unsigned long)b, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(int n, int base) {
-  print((long)n, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(unsigned int n, int base) {
-  print((unsigned long)n, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(long n, int base) {
-  if (base == 0) write(n);
-  else if (base == 10) {
-    if (n < 0) { print('-'); n = -n; }
-    printNumber(n, 10);
-  }
-  else
-    printNumber(n, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(unsigned long n, int base) {
-  if (base == 0) write(n);
-  else printNumber(n, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(double n, int digits) {
-  printFloat(n, digits);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println() {
-  print('\r');
-  print('\n');
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(const String& s) {
-  print(s);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(const char c[]) {
-  print(c);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(char c, int base) {
-  print(c, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(unsigned char b, int base) {
-  print(b, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(int n, int base) {
-  print(n, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(unsigned int n, int base) {
-  print(n, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(long n, int base) {
-  print(n, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(unsigned long n, int base) {
-  print(n, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(double n, int digits) {
-  print(n, digits);
-  println();
-}
-
-// Private Methods
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::printNumber(unsigned long n, uint8_t base) {
-  if (n) {
-    unsigned char buf[8 * sizeof(long)]; // Enough space for base 2
-    int8_t i = 0;
-    while (n) {
-      buf[i++] = n % base;
-      n /= base;
-    }
-    while (i--)
-      print((char)(buf[i] + (buf[i] < 10 ? '0' : 'A' - 10)));
-  }
-  else
-    print('0');
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::printFloat(double number, uint8_t digits) {
-  // Handle negative numbers
-  if (number < 0.0) {
-    print('-');
-    number = -number;
-  }
-
-  // Round correctly so that print(1.999, 2) prints as "2.00"
-  double rounding = 0.5;
-  LOOP_L_N(i, digits) rounding *= 0.1;
-  number += rounding;
-
-  // Extract the integer part of the number and print it
-  unsigned long int_part = (unsigned long)number;
-  double remainder = number - (double)int_part;
-  print(int_part);
-
-  // Print the decimal point, but only if there are digits beyond
-  if (digits) {
-    print('.');
-    // Extract digits from the remainder one at a time
-    while (digits--) {
-      remainder *= 10.0;
-      int toPrint = int(remainder);
-      print(toPrint);
-      remainder -= toPrint;
-    }
-  }
-}
-
 // Hookup ISR handlers
 ISR(SERIAL_REGNAME(USART, SERIAL_PORT, _RX_vect)) {
   MarlinSerial<MarlinSerialCfg<SERIAL_PORT>>::store_rxd_char();
@@ -720,11 +566,9 @@ ISR(SERIAL_REGNAME(USART, SERIAL_PORT, _UDRE_vect)) {
   MarlinSerial<MarlinSerialCfg<SERIAL_PORT>>::_tx_udr_empty_irq();
 }
 
-// Preinstantiate
+// Because of the template definition above, it's required to instantiate the template to have all methods generated
-template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT>>;
+template class MarlinSerial< MarlinSerialCfg<SERIAL_PORT> >;
-
+MSerialT customizedSerial1(MSerialT::HasEmergencyParser);
-// Instantiate
-MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
 
 #ifdef SERIAL_PORT_2
 
@@ -737,12 +581,8 @@ MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
     MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>>::_tx_udr_empty_irq();
   }
 
-  // Preinstantiate
+  template class MarlinSerial< MarlinSerialCfg<SERIAL_PORT_2> >;
-  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>>;
+  MSerialT2 customizedSerial2(MSerialT2::HasEmergencyParser);
-
-  // Instantiate
-  MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
-
 #endif
 
 #ifdef MMU2_SERIAL_PORT
@@ -755,12 +595,8 @@ MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
     MarlinSerial<MMU2SerialCfg<MMU2_SERIAL_PORT>>::_tx_udr_empty_irq();
   }
 
-  // Preinstantiate
+  template class MarlinSerial< MMU2SerialCfg<MMU2_SERIAL_PORT> >;
-  template class MarlinSerial<MMU2SerialCfg<MMU2_SERIAL_PORT>>;
+  MSerialT3 mmuSerial(MSerialT3::HasEmergencyParser);
-
-  // Instantiate
-  MarlinSerial<MMU2SerialCfg<MMU2_SERIAL_PORT>> mmuSerial;
-
 #endif
 
 #ifdef LCD_SERIAL_PORT
@@ -773,11 +609,8 @@ MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
     MarlinSerial<LCDSerialCfg<LCD_SERIAL_PORT>>::_tx_udr_empty_irq();
   }
 
-  // Preinstantiate
+  template class MarlinSerial< LCDSerialCfg<LCD_SERIAL_PORT> >;
-  template class MarlinSerial<LCDSerialCfg<LCD_SERIAL_PORT>>;
+  MSerialT4 lcdSerial(MSerialT4::HasEmergencyParser);
-
-  // Instantiate
-  MarlinSerial<LCDSerialCfg<LCD_SERIAL_PORT>> lcdSerial;
 
   #if HAS_DGUS_LCD
     template<typename Cfg>
@@ -796,7 +629,7 @@ MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
 
 // For AT90USB targets use the UART for BT interfacing
 #if defined(USBCON) && ENABLED(BLUETOOTH)
-  HardwareSerial bluetoothSerial;
+  MSerialT5 bluetoothSerial(false);
 #endif
 
 #endif // __AVR__

Marlin/src/HAL/AVR/MarlinSerial.h

@@ -34,6 +34,7 @@
 #include <WString.h>
 
 #include "../../inc/MarlinConfigPre.h"
+#include "../../core/serial_hook.h"
 
 #ifndef SERIAL_PORT
   #define SERIAL_PORT 0
@@ -135,10 +136,6 @@
     UART_DECL(3);
   #endif
 
-  #define DEC 10
-  #define HEX 16
-  #define OCT 8
-  #define BIN 2
   #define BYTE 0
 
   // Templated type selector
@@ -202,60 +199,30 @@
     static FORCE_INLINE void atomic_set_rx_tail(ring_buffer_pos_t value);
     static FORCE_INLINE ring_buffer_pos_t atomic_read_rx_tail();
 
-    public:
+  public:
-
     FORCE_INLINE static void store_rxd_char();
     FORCE_INLINE static void _tx_udr_empty_irq();
 
-    public:
+  public:
-      MarlinSerial() {};
+    static void begin(const long);
-      static void begin(const long);
+    static void end();
-      static void end();
+    static int peek();
-      static int peek();
+    static int read();
-      static int read();
+    static void flush();
-      static void flush();
+    static ring_buffer_pos_t available();
-      static ring_buffer_pos_t available();
+    static size_t write(const uint8_t c);
-      static void write(const uint8_t c);
+    static void flushTX();
-      static void flushTX();
+    #if HAS_DGUS_LCD
-      #if HAS_DGUS_LCD
+      static ring_buffer_pos_t get_tx_buffer_free();
-        static ring_buffer_pos_t get_tx_buffer_free();
+    #endif
-      #endif
 
-      static inline bool emergency_parser_enabled() { return Cfg::EMERGENCYPARSER; }
+    enum { HasEmergencyParser = Cfg::EMERGENCYPARSER };
+    static inline bool emergency_parser_enabled() { return Cfg::EMERGENCYPARSER; }
 
-      FORCE_INLINE static uint8_t dropped() { return Cfg::DROPPED_RX ? rx_dropped_bytes : 0; }
+    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; }
+    FORCE_INLINE static uint8_t buffer_overruns() { return Cfg::RX_OVERRUNS ? rx_buffer_overruns : 0; }
-      FORCE_INLINE static uint8_t framing_errors() { return Cfg::RX_FRAMING_ERRORS ? rx_framing_errors : 0; }
+    FORCE_INLINE static uint8_t framing_errors() { return Cfg::RX_FRAMING_ERRORS ? rx_framing_errors : 0; }
-      FORCE_INLINE static ring_buffer_pos_t rxMaxEnqueued() { return Cfg::MAX_RX_QUEUED ? rx_max_enqueued : 0; }
+    FORCE_INLINE static ring_buffer_pos_t rxMaxEnqueued() { return Cfg::MAX_RX_QUEUED ? rx_max_enqueued : 0; }
-
-      FORCE_INLINE static void write(const char* str) { while (*str) write(*str++); }
-      FORCE_INLINE static void write(const uint8_t* buffer, size_t size) { while (size--) write(*buffer++); }
-      FORCE_INLINE static void print(const String& s) { for (int i = 0; i < (int)s.length(); i++) write(s[i]); }
-      FORCE_INLINE static void print(const char* str) { write(str); }
-
-      static void print(char, int = BYTE);
-      static void print(unsigned char, int = BYTE);
-      static void print(int, int = DEC);
-      static void print(unsigned int, int = DEC);
-      static void print(long, int = DEC);
-      static void print(unsigned long, int = DEC);
-      static void print(double, int = 2);
-
-      static void println(const String& s);
-      static void println(const char[]);
-      static void println(char, int = BYTE);
-      static void println(unsigned char, int = BYTE);
-      static void println(int, int = DEC);
-      static void println(unsigned int, int = DEC);
-      static void println(long, int = DEC);
-      static void println(unsigned long, int = DEC);
-      static void println(double, int = 2);
-      static void println();
-      operator bool() { return true; }
-
-    private:
-      static void printNumber(unsigned long, const uint8_t);
-      static void printFloat(double, uint8_t);
   };
 
   template <uint8_t serial>
@@ -270,12 +237,13 @@
     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;
+
+  typedef Serial1Class< MarlinSerial< MarlinSerialCfg<SERIAL_PORT> > > MSerialT;
+  extern MSerialT customizedSerial1;
 
   #ifdef SERIAL_PORT_2
-
+    typedef Serial1Class< MarlinSerial< MarlinSerialCfg<SERIAL_PORT_2> > > MSerialT2;
-    extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
+    extern MSerialT2 customizedSerial2;
-
   #endif
 
 #endif // !USBCON
@@ -284,49 +252,41 @@
   template <uint8_t serial>
   struct MMU2SerialCfg {
     static constexpr int PORT               = serial;
+    static constexpr unsigned int RX_SIZE   = 32;
+    static constexpr unsigned int TX_SIZE   = 32;
     static constexpr bool XONOFF            = false;
     static constexpr bool EMERGENCYPARSER   = false;
     static constexpr bool DROPPED_RX        = false;
     static constexpr bool RX_FRAMING_ERRORS = false;
     static constexpr bool MAX_RX_QUEUED     = false;
-    static constexpr unsigned int RX_SIZE   = 32;
-    static constexpr unsigned int TX_SIZE   = 32;
     static constexpr bool RX_OVERRUNS       = false;
   };
 
-  extern MarlinSerial<MMU2SerialCfg<MMU2_SERIAL_PORT>> mmuSerial;
+  typedef Serial1Class< MarlinSerial< MMU2SerialCfg<MMU2_SERIAL_PORT> > > MSerialT3;
+  extern MSerialT3 mmuSerial;
 #endif
 
 #ifdef LCD_SERIAL_PORT
 
   template <uint8_t serial>
   struct LCDSerialCfg {
-    static constexpr int PORT                 = serial;
+    static constexpr int PORT               = serial;
-    static constexpr bool XONOFF              = false;
+    static constexpr unsigned int RX_SIZE   = TERN(HAS_DGUS_LCD, DGUS_RX_BUFFER_SIZE,  64);
-    static constexpr bool EMERGENCYPARSER     = ENABLED(EMERGENCY_PARSER);
+    static constexpr unsigned int TX_SIZE   = TERN(HAS_DGUS_LCD, DGUS_TX_BUFFER_SIZE, 128);
-    static constexpr bool DROPPED_RX          = false;
+    static constexpr bool XONOFF            = false;
-    static constexpr bool RX_FRAMING_ERRORS   = false;
+    static constexpr bool EMERGENCYPARSER   = ENABLED(EMERGENCY_PARSER);
-    static constexpr bool MAX_RX_QUEUED       = false;
+    static constexpr bool DROPPED_RX        = false;
-    #if HAS_DGUS_LCD
+    static constexpr bool RX_FRAMING_ERRORS = false;
-      static constexpr unsigned int RX_SIZE   = DGUS_RX_BUFFER_SIZE;
+    static constexpr bool MAX_RX_QUEUED     = false;
-      static constexpr unsigned int TX_SIZE   = DGUS_TX_BUFFER_SIZE;
+    static constexpr bool RX_OVERRUNS       = BOTH(HAS_DGUS_LCD, SERIAL_STATS_RX_BUFFER_OVERRUNS);
-      static constexpr bool RX_OVERRUNS       = ENABLED(SERIAL_STATS_RX_BUFFER_OVERRUNS);
-    #elif EITHER(ANYCUBIC_LCD_I3MEGA, ANYCUBIC_LCD_CHIRON)
-      static constexpr unsigned int RX_SIZE   = 64;
-      static constexpr unsigned int TX_SIZE   = 128;
-      static constexpr bool RX_OVERRUNS       = false;
-    #else
-      static constexpr unsigned int RX_SIZE   = 64;
-      static constexpr unsigned int TX_SIZE   = 128;
-      static constexpr bool RX_OVERRUNS       = false
-    #endif
   };
 
-  extern MarlinSerial<LCDSerialCfg<LCD_SERIAL_PORT>> lcdSerial;
+  typedef Serial1Class< MarlinSerial< LCDSerialCfg<LCD_SERIAL_PORT> > > MSerialT4;
-
+  extern MSerialT4 lcdSerial;
 #endif
 
 // Use the UART for Bluetooth in AT90USB configurations
 #if defined(USBCON) && ENABLED(BLUETOOTH)
-  extern HardwareSerial bluetoothSerial;
+  typedef Serial1Class<HardwareSerial> MSerialT5;
+  extern MSerialT5 bluetoothSerial;
 #endif

Marlin/src/HAL/AVR/fastio.h

@@ -285,7 +285,7 @@ enum ClockSource2 : char {
  */
 
 // 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)
+#define _PWM_CHK_FAN_B(P) (P == E0_AUTO_FAN_PIN || P == E1_AUTO_FAN_PIN || P == E2_AUTO_FAN_PIN || P == E3_AUTO_FAN_PIN || P == E4_AUTO_FAN_PIN || P == E5_AUTO_FAN_PIN || P == E6_AUTO_FAN_PIN || P == E7_AUTO_FAN_PIN || P == CHAMBER_AUTO_FAN_PIN || P == COOLER_AUTO_FAN_PIN)
 #if PIN_EXISTS(CONTROLLER_FAN)
   #define PWM_CHK_FAN_B(P) (_PWM_CHK_FAN_B(P) || P == CONTROLLER_FAN_PIN)
 #else

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

@@ -56,3 +56,10 @@
 #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
+
+/**
+ * Postmortem debugging
+ */
+#if ENABLED(POSTMORTEM_DEBUGGING)
+  #error "POSTMORTEM_DEBUGGING is not supported on AVR boards."
+#endif

Marlin/src/HAL/AVR/pinsDebug.h

@@ -235,8 +235,8 @@ static void print_is_also_tied() { SERIAL_ECHOPGM(" is also tied to this pin");
 
 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_ECHOPAIR("    COM", AS_CHAR('0' + N));
-  SERIAL_CHAR('0' + N, Z);
+  SERIAL_CHAR(Z);
   SERIAL_ECHOPAIR(": ", int((*TCCRA >> (6 - Z * 2)) & 0x03));
 }
 
@@ -247,8 +247,8 @@ void timer_prefix(uint8_t T, char L, uint8_t N) {  // T - timer    L - pwm  N -
   uint8_t WGM = (((*TCCRB & _BV(WGM_2)) >> 1) | (*TCCRA & (_BV(WGM_0) | _BV(WGM_1))));
   if (N == 4) WGM |= ((*TCCRB & _BV(WGM_3)) >> 1);
 
-  SERIAL_ECHOPGM("    TIMER");
+  SERIAL_ECHOPAIR("    TIMER", AS_CHAR(T + '0'));
-  SERIAL_CHAR(T + '0', L);
+  SERIAL_CHAR(L);
   SERIAL_ECHO_SP(3);
 
   if (N == 3) {
@@ -262,19 +262,11 @@ void timer_prefix(uint8_t T, char L, uint8_t N) {  // T - timer    L - pwm  N -
   SERIAL_ECHOPAIR("    WGM: ", WGM);
   com_print(T,L);
   SERIAL_ECHOPAIR("    CS: ", (*TCCRB & (_BV(CS_0) | _BV(CS_1) | _BV(CS_2)) ));
-
+  SERIAL_ECHOPAIR("    TCCR", AS_CHAR(T + '0'), "A: ", *TCCRA);
-  SERIAL_ECHOPGM("    TCCR");
+  SERIAL_ECHOPAIR("    TCCR", AS_CHAR(T + '0'), "B: ", *TCCRB);
-  SERIAL_CHAR(T + '0');
-  SERIAL_ECHOPAIR("A: ", *TCCRA);
-
-  SERIAL_ECHOPGM("    TCCR");
-  SERIAL_CHAR(T + '0');
-  SERIAL_ECHOPAIR("B: ", *TCCRB);
 
   const uint8_t *TMSK = (uint8_t*)TIMSK(T);
-  SERIAL_ECHOPGM("    TIMSK");
+  SERIAL_ECHOPAIR("    TIMSK", AS_CHAR(T + '0'), ": ", *TMSK);
-  SERIAL_CHAR(T + '0');
-  SERIAL_ECHOPAIR(": ", *TMSK);
 
   const uint8_t OCIE = L - 'A' + 1;
   if (N == 3) { if (WGM == 0 || WGM == 2 || WGM ==  4 || WGM ==  6) err_is_counter(); }

Marlin/src/HAL/DUE/DebugMonitor.cpp

@@ -1,342 +0,0 @@
-/**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- *
- */
-#ifdef ARDUINO_ARCH_SAM
-
-#include "../../core/macros.h"
-#include "../../core/serial.h"
-
-#include "../shared/backtrace/unwinder.h"
-#include "../shared/backtrace/unwmemaccess.h"
-
-#include <stdarg.h>
-
-// Debug monitor that dumps to the Programming port all status when
-// an exception or WDT timeout happens - And then resets the board
-
-// All the Monitor routines must run with interrupts disabled and
-// under an ISR execution context. That is why we cannot reuse the
-// Serial interrupt routines or any C runtime, as we don't know the
-// state we are when running them
-
-// A SW memory barrier, to ensure GCC does not overoptimize loops
-#define sw_barrier() __asm__ volatile("": : :"memory");
-
-// (re)initialize UART0 as a monitor output to 250000,n,8,1
-static void TXBegin() {
-
-  // Disable UART interrupt in NVIC
-  NVIC_DisableIRQ( UART_IRQn );
-
-  // We NEED memory barriers to ensure Interrupts are actually disabled!
-  // ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
-  __DSB();
-  __ISB();
-
-  // Disable clock
-  pmc_disable_periph_clk( ID_UART );
-
-  // Configure PMC
-  pmc_enable_periph_clk( ID_UART );
-
-  // Disable PDC channel
-  UART->UART_PTCR = UART_PTCR_RXTDIS | UART_PTCR_TXTDIS;
-
-  // Reset and disable receiver and transmitter
-  UART->UART_CR = UART_CR_RSTRX | UART_CR_RSTTX | UART_CR_RXDIS | UART_CR_TXDIS;
-
-  // Configure mode: 8bit, No parity, 1 bit stop
-  UART->UART_MR = UART_MR_CHMODE_NORMAL | US_MR_CHRL_8_BIT | US_MR_NBSTOP_1_BIT | UART_MR_PAR_NO;
-
-  // Configure baudrate (asynchronous, no oversampling) to BAUDRATE bauds
-  UART->UART_BRGR = (SystemCoreClock / (BAUDRATE << 4));
-
-  // Enable receiver and transmitter
-  UART->UART_CR = UART_CR_RXEN | UART_CR_TXEN;
-}
-
-// Send character through UART with no interrupts
-static void TX(char c) {
-  while (!(UART->UART_SR & UART_SR_TXRDY)) { WDT_Restart(WDT); sw_barrier(); };
-  UART->UART_THR = c;
-}
-
-// Send String through UART
-static void TX(const char* s) {
-  while (*s) TX(*s++);
-}
-
-static void TXDigit(uint32_t d) {
-  if (d < 10) TX((char)(d+'0'));
-  else if (d < 16) TX((char)(d+'A'-10));
-  else TX('?');
-}
-
-// Send Hex number thru UART
-static void TXHex(uint32_t v) {
-  TX("0x");
-  for (uint8_t i = 0; i < 8; i++, v <<= 4)
-    TXDigit((v >> 28) & 0xF);
-}
-
-// Send Decimal number thru UART
-static void TXDec(uint32_t v) {
-  if (!v) {
-    TX('0');
-    return;
-  }
-
-  char nbrs[14];
-  char *p = &nbrs[0];
-  while (v != 0) {
-    *p++ = '0' + (v % 10);
-    v /= 10;
-  }
-  do {
-    p--;
-    TX(*p);
-  } while (p != &nbrs[0]);
-}
-
-// Dump a backtrace entry
-static bool UnwReportOut(void* ctx, const UnwReport* bte) {
-  int* p = (int*)ctx;
-
-  (*p)++;
-  TX('#'); TXDec(*p); TX(" : ");
-  TX(bte->name?bte->name:"unknown"); TX('@'); TXHex(bte->function);
-  TX('+'); TXDec(bte->address - bte->function);
-  TX(" PC:");TXHex(bte->address); TX('\n');
-  return true;
-}
-
-#ifdef UNW_DEBUG
-  void UnwPrintf(const char* format, ...) {
-    char dest[256];
-    va_list argptr;
-    va_start(argptr, format);
-    vsprintf(dest, format, argptr);
-    va_end(argptr);
-    TX(&dest[0]);
-  }
-#endif
-
-/* Table of function pointers for passing to the unwinder */
-static const UnwindCallbacks UnwCallbacks = {
-  UnwReportOut,
-  UnwReadW,
-  UnwReadH,
-  UnwReadB
-  #ifdef UNW_DEBUG
-   , UnwPrintf
-  #endif
-};
-
-/**
- * HardFaultHandler_C:
- * This is called from the HardFault_HandlerAsm with a pointer the Fault stack
- * as the parameter. We can then read the values from the stack and place them
- * into local variables for ease of reading.
- * We then read the various Fault Status and Address Registers to help decode
- * cause of the fault.
- * The function ends with a BKPT instruction to force control back into the debugger
- */
-extern "C"
-void HardFault_HandlerC(unsigned long *sp, unsigned long lr, unsigned long cause) {
-
-  static const char* causestr[] = {
-    "NMI","Hard","Mem","Bus","Usage","Debug","WDT","RSTC"
-  };
-
-  UnwindFrame btf;
-
-  // Dump report to the Programming port (interrupts are DISABLED)
-  TXBegin();
-  TX("\n\n## Software Fault detected ##\n");
-  TX("Cause: "); TX(causestr[cause]); TX('\n');
-
-  TX("R0   : "); TXHex(((unsigned long)sp[0])); TX('\n');
-  TX("R1   : "); TXHex(((unsigned long)sp[1])); TX('\n');
-  TX("R2   : "); TXHex(((unsigned long)sp[2])); TX('\n');
-  TX("R3   : "); TXHex(((unsigned long)sp[3])); TX('\n');
-  TX("R12  : "); TXHex(((unsigned long)sp[4])); TX('\n');
-  TX("LR   : "); TXHex(((unsigned long)sp[5])); TX('\n');
-  TX("PC   : "); TXHex(((unsigned long)sp[6])); TX('\n');
-  TX("PSR  : "); TXHex(((unsigned long)sp[7])); TX('\n');
-
-  // Configurable Fault Status Register
-  // Consists of MMSR, BFSR and UFSR
-  TX("CFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED28)))); TX('\n');
-
-  // Hard Fault Status Register
-  TX("HFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED2C)))); TX('\n');
-
-  // Debug Fault Status Register
-  TX("DFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED30)))); TX('\n');
-
-  // Auxiliary Fault Status Register
-  TX("AFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED3C)))); TX('\n');
-
-  // Read the Fault Address Registers. These may not contain valid values.
-  // Check BFARVALID/MMARVALID to see if they are valid values
-  // MemManage Fault Address Register
-  TX("MMAR : "); TXHex((*((volatile unsigned long *)(0xE000ED34)))); TX('\n');
-
-  // Bus Fault Address Register
-  TX("BFAR : "); TXHex((*((volatile unsigned long *)(0xE000ED38)))); TX('\n');
-
-  TX("ExcLR: "); TXHex(lr); TX('\n');
-  TX("ExcSP: "); TXHex((unsigned long)sp); TX('\n');
-
-  btf.sp = ((unsigned long)sp) + 8*4; // The original stack pointer
-  btf.fp = btf.sp;
-  btf.lr = ((unsigned long)sp[5]);
-  btf.pc = ((unsigned long)sp[6]) | 1; // Force Thumb, as CORTEX only support it
-
-  // Perform a backtrace
-  TX("\nBacktrace:\n\n");
-  int ctr = 0;
-  UnwindStart(&btf, &UnwCallbacks, &ctr);
-
-  // Disable all NVIC interrupts
-  NVIC->ICER[0] = 0xFFFFFFFF;
-  NVIC->ICER[1] = 0xFFFFFFFF;
-
-  // Relocate VTOR table to default position
-  SCB->VTOR = 0;
-
-  // Disable USB
-  otg_disable();
-
-  // Restart watchdog
-  WDT_Restart(WDT);
-
-  // Reset controller
-  NVIC_SystemReset();
-  for (;;) WDT_Restart(WDT);
-}
-
-__attribute__((naked)) void NMI_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#0")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void HardFault_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#1")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void MemManage_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#2")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void BusFault_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#3")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void UsageFault_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#4")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void DebugMon_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#5")
-    A("b HardFault_HandlerC")
-  );
-}
-
-/* This is NOT an exception, it is an interrupt handler - Nevertheless, the framing is the same */
-__attribute__((naked)) void WDT_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#6")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void RSTC_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#7")
-    A("b HardFault_HandlerC")
-  );
-}
-
-#endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/HAL.cpp

@@ -40,6 +40,8 @@ uint16_t HAL_adc_result;
 // Public functions
 // ------------------------
 
+TERN_(POSTMORTEM_DEBUGGING, extern void install_min_serial());
+
 // HAL initialization task
 void HAL_init() {
   // Initialize the USB stack
@@ -47,6 +49,7 @@ void HAL_init() {
     OUT_WRITE(SDSS, HIGH);  // Try to set SDSS inactive before any other SPI users start up
   #endif
   usb_task_init();
+  TERN_(POSTMORTEM_DEBUGGING, install_min_serial()); // Install the min serial handler
 }
 
 // HAL idle task
@@ -102,4 +105,18 @@ uint16_t HAL_adc_get_result() {
   return HAL_adc_result;
 }
 
+// Forward the default serial ports
+#if ANY_SERIAL_IS(0)
+  DefaultSerial1 MSerial0(false, Serial);
+#endif
+#if ANY_SERIAL_IS(1)
+  DefaultSerial2 MSerial1(false, Serial1);
+#endif
+#if ANY_SERIAL_IS(2)
+  DefaultSerial3 MSerial2(false, Serial2);
+#endif
+#if ANY_SERIAL_IS(3)
+  DefaultSerial4 MSerial3(false, Serial3);
+#endif
+
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/HAL.h

@@ -36,29 +36,47 @@
 
 #include <stdint.h>
 
-#define _MSERIAL(X) Serial##X
+#include "../../core/serial_hook.h"
-#define MSERIAL(X) _MSERIAL(X)
-#define Serial0 Serial
 
-// Define MYSERIAL0/1 before MarlinSerial includes!
+typedef ForwardSerial1Class< decltype(Serial) > DefaultSerial1;
+typedef ForwardSerial1Class< decltype(Serial1) > DefaultSerial2;
+typedef ForwardSerial1Class< decltype(Serial2) > DefaultSerial3;
+typedef ForwardSerial1Class< decltype(Serial3) > DefaultSerial4;
+extern DefaultSerial1 MSerial0;
+extern DefaultSerial2 MSerial1;
+extern DefaultSerial3 MSerial2;
+extern DefaultSerial4 MSerial3;
+
+#define _MSERIAL(X) MSerial##X
+#define MSERIAL(X) _MSERIAL(X)
+
+// Define MYSERIAL1/2 before MarlinSerial includes!
 #if SERIAL_PORT == -1 || ENABLED(EMERGENCY_PARSER)
-  #define MYSERIAL0 customizedSerial1
+  #define MYSERIAL1 customizedSerial1
 #elif WITHIN(SERIAL_PORT, 0, 3)
-  #define MYSERIAL0 MSERIAL(SERIAL_PORT)
+  #define MYSERIAL1 MSERIAL(SERIAL_PORT)
 #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 == -1 || ENABLED(EMERGENCY_PARSER)
-    #define MYSERIAL1 customizedSerial2
+    #define MYSERIAL2 customizedSerial2
   #elif WITHIN(SERIAL_PORT_2, 0, 3)
-    #define MYSERIAL1 MSERIAL(SERIAL_PORT_2)
+    #define MYSERIAL2 MSERIAL(SERIAL_PORT_2)
   #else
     #error "SERIAL_PORT_2 must be from -1 to 3. Please update your configuration."
   #endif
 #endif
 
+#ifdef MMU2_SERIAL_PORT
+  #if WITHIN(MMU2_SERIAL_PORT, 0, 3)
+    #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
+  #else
+    #error "MMU2_SERIAL_PORT must be from 0 to 3. Please update your configuration."
+  #endif
+#endif
+
 #ifdef LCD_SERIAL_PORT
   #if LCD_SERIAL_PORT == -1
     #define LCD_SERIAL lcdSerial
@@ -75,16 +93,6 @@
 // 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

Marlin/src/HAL/DUE/HAL_MinSerial.cpp

@@ -0,0 +1,91 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#ifdef ARDUINO_ARCH_SAM
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+
+#include "../shared/HAL_MinSerial.h"
+
+#include <stdarg.h>
+
+static void TXBegin() {
+  // Disable UART interrupt in NVIC
+  NVIC_DisableIRQ( UART_IRQn );
+
+  // We NEED memory barriers to ensure Interrupts are actually disabled!
+  // ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
+  __DSB();
+  __ISB();
+
+  // Disable clock
+  pmc_disable_periph_clk( ID_UART );
+
+  // Configure PMC
+  pmc_enable_periph_clk( ID_UART );
+
+  // Disable PDC channel
+  UART->UART_PTCR = UART_PTCR_RXTDIS | UART_PTCR_TXTDIS;
+
+  // Reset and disable receiver and transmitter
+  UART->UART_CR = UART_CR_RSTRX | UART_CR_RSTTX | UART_CR_RXDIS | UART_CR_TXDIS;
+
+  // Configure mode: 8bit, No parity, 1 bit stop
+  UART->UART_MR = UART_MR_CHMODE_NORMAL | US_MR_CHRL_8_BIT | US_MR_NBSTOP_1_BIT | UART_MR_PAR_NO;
+
+  // Configure baudrate (asynchronous, no oversampling) to BAUDRATE bauds
+  UART->UART_BRGR = (SystemCoreClock / (BAUDRATE << 4));
+
+  // Enable receiver and transmitter
+  UART->UART_CR = UART_CR_RXEN | UART_CR_TXEN;
+}
+
+// A SW memory barrier, to ensure GCC does not overoptimize loops
+#define sw_barrier() __asm__ volatile("": : :"memory");
+static void TX(char c) {
+  while (!(UART->UART_SR & UART_SR_TXRDY)) { WDT_Restart(WDT); sw_barrier(); };
+  UART->UART_THR = c;
+}
+
+void install_min_serial() {
+  HAL_min_serial_init = &TXBegin;
+  HAL_min_serial_out = &TX;
+}
+
+#if DISABLED(DYNAMIC_VECTORTABLE)
+extern "C" {
+  __attribute__((naked)) void JumpHandler_ASM() {
+    __asm__ __volatile__ (
+      "b CommonHandler_ASM\n"
+    );
+  }
+  void __attribute__((naked, alias("JumpHandler_ASM"))) HardFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"))) BusFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"))) UsageFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"))) MemManage_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"))) NMI_Handler();
+}
+#endif
+
+#endif // POSTMORTEM_DEBUGGING
+#endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/HAL_SPI.cpp

@@ -240,7 +240,7 @@
   }
 
   // all the others
-  static uint32_t spiDelayCyclesX4 = (F_CPU) / 1000000; // 4µs => 125khz
+  static uint32_t spiDelayCyclesX4 = 4 * (F_CPU) / 1000000; // 4µs => 125khz
 
   static uint8_t spiTransferX(uint8_t b) { // using Mode 0
     int bits = 8;
@@ -249,12 +249,12 @@
       b <<= 1; // little setup time
 
       WRITE(SD_SCK_PIN, HIGH);
-      __delay_4cycles(spiDelayCyclesX4);
+      DELAY_CYCLES(spiDelayCyclesX4);
 
       b |= (READ(SD_MISO_PIN) != 0);
 
       WRITE(SD_SCK_PIN, LOW);
-      __delay_4cycles(spiDelayCyclesX4);
+      DELAY_CYCLES(spiDelayCyclesX4);
     } while (--bits);
     return b;
   }
@@ -510,7 +510,7 @@
         spiRxBlock = (pfnSpiRxBlock)spiRxBlockX;
         break;
       default:
-        spiDelayCyclesX4 = ((F_CPU) / 1000000) >> (6 - spiRate);
+        spiDelayCyclesX4 = ((F_CPU) / 1000000) >> (6 - spiRate) << 2; // spiRate of 2 gives the maximum error with current CPU
         spiTransferTx = (pfnSpiTransfer)spiTransferX;
         spiTransferRx = (pfnSpiTransfer)spiTransferX;
         spiTxBlock = (pfnSpiTxBlock)spiTxBlockX;

Marlin/src/HAL/DUE/MarlinSerial.cpp

@@ -382,7 +382,7 @@ void MarlinSerial<Cfg>::flush() {
 }
 
 template<typename Cfg>
-void MarlinSerial<Cfg>::write(const uint8_t c) {
+size_t MarlinSerial<Cfg>::write(const uint8_t c) {
   _written = true;
 
   if (Cfg::TX_SIZE == 0) {
@@ -400,7 +400,7 @@ void MarlinSerial<Cfg>::write(const uint8_t c) {
     // XOFF char at the RX isr, but it is properly handled there
     if (!(HWUART->UART_IMR & UART_IMR_TXRDY) && (HWUART->UART_SR & UART_SR_TXRDY)) {
       HWUART->UART_THR = c;
-      return;
+      return 1;
     }
 
     const uint8_t i = (tx_buffer.head + 1) & (Cfg::TX_SIZE - 1);
@@ -428,6 +428,7 @@ void MarlinSerial<Cfg>::write(const uint8_t c) {
     // Enable TX isr - Non atomic, but it will eventually enable TX isr
     HWUART->UART_IER = UART_IER_TXRDY;
   }
+  return 1;
 }
 
 template<typename Cfg>
@@ -473,169 +474,16 @@ void MarlinSerial<Cfg>::flushTX() {
   }
 }
 
-/**
- * Imports from print.h
- */
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(char c, int base) {
-  print((long)c, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(unsigned char b, int base) {
-  print((unsigned long)b, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(int n, int base) {
-  print((long)n, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(unsigned int n, int base) {
-  print((unsigned long)n, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(long n, int base) {
-  if (base == 0) write(n);
-  else if (base == 10) {
-    if (n < 0) { print('-'); n = -n; }
-    printNumber(n, 10);
-  }
-  else
-    printNumber(n, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(unsigned long n, int base) {
-  if (base == 0) write(n);
-  else printNumber(n, base);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::print(double n, int digits) {
-  printFloat(n, digits);
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println() {
-  print('\r');
-  print('\n');
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(const String& s) {
-  print(s);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(const char c[]) {
-  print(c);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(char c, int base) {
-  print(c, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(unsigned char b, int base) {
-  print(b, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(int n, int base) {
-  print(n, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(unsigned int n, int base) {
-  print(n, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(long n, int base) {
-  print(n, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(unsigned long n, int base) {
-  print(n, base);
-  println();
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::println(double n, int digits) {
-  print(n, digits);
-  println();
-}
-
-// Private Methods
-template<typename Cfg>
-void MarlinSerial<Cfg>::printNumber(unsigned long n, uint8_t base) {
-  if (n) {
-    unsigned char buf[8 * sizeof(long)]; // Enough space for base 2
-    int8_t i = 0;
-    while (n) {
-      buf[i++] = n % base;
-      n /= base;
-    }
-    while (i--)
-      print((char)(buf[i] + (buf[i] < 10 ? '0' : 'A' - 10)));
-  }
-  else
-    print('0');
-}
-
-template<typename Cfg>
-void MarlinSerial<Cfg>::printFloat(double number, uint8_t digits) {
-  // Handle negative numbers
-  if (number < 0.0) {
-    print('-');
-    number = -number;
-  }
-
-  // Round correctly so that print(1.999, 2) prints as "2.00"
-  double rounding = 0.5;
-  LOOP_L_N(i, digits) rounding *= 0.1;
-  number += rounding;
-
-  // Extract the integer part of the number and print it
-  unsigned long int_part = (unsigned long)number;
-  double remainder = number - (double)int_part;
-  print(int_part);
-
-  // Print the decimal point, but only if there are digits beyond
-  if (digits) {
-    print('.');
-    // Extract digits from the remainder one at a time
-    while (digits--) {
-      remainder *= 10.0;
-      int toPrint = int(remainder);
-      print(toPrint);
-      remainder -= toPrint;
-    }
-  }
-}
 
 // If not using the USB port as serial port
 #if SERIAL_PORT >= 0
-  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT>>;      // Define
+  template class MarlinSerial< MarlinSerialCfg<SERIAL_PORT> >;
-  MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;   // Instantiate
+  MSerialT customizedSerial1(MarlinSerialCfg<SERIAL_PORT>::EMERGENCYPARSER);
 #endif
 
 #if defined(SERIAL_PORT_2) && SERIAL_PORT_2 >= 0
-  template class MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>>;    // Define
+  template class MarlinSerial< MarlinSerialCfg<SERIAL_PORT_2> >;
-  MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2; // Instantiate
+  MSerialT2 customizedSerial2(MarlinSerialCfg<SERIAL_PORT_2>::EMERGENCYPARSER);
 #endif
 
 #endif // ARDUINO_ARCH_SAM

Marlin/src/HAL/DUE/MarlinSerial.h

@@ -30,11 +30,7 @@
 #include <WString.h>
 
 #include "../../inc/MarlinConfigPre.h"
-
+#include "../../core/serial_hook.h"
-#define DEC 10
-#define HEX 16
-#define OCT 8
-#define BIN 2
 
 // Define constants and variables for buffering incoming serial data.  We're
 // using a ring buffer (I think), in which rx_buffer_head is the index of the
@@ -119,7 +115,7 @@ public:
   static int read();
   static void flush();
   static ring_buffer_pos_t available();
-  static void write(const uint8_t c);
+  static size_t write(const uint8_t c);
   static void flushTX();
 
   static inline bool emergency_parser_enabled() { return Cfg::EMERGENCYPARSER; }
@@ -128,35 +124,6 @@ public:
   FORCE_INLINE static uint8_t buffer_overruns() { return Cfg::RX_OVERRUNS ? rx_buffer_overruns : 0; }
   FORCE_INLINE static uint8_t framing_errors() { return Cfg::RX_FRAMING_ERRORS ? rx_framing_errors : 0; }
   FORCE_INLINE static ring_buffer_pos_t rxMaxEnqueued() { return Cfg::MAX_RX_QUEUED ? rx_max_enqueued : 0; }
-
-  FORCE_INLINE static void write(const char* str) { while (*str) write(*str++); }
-  FORCE_INLINE static void write(const uint8_t* buffer, size_t size) { while (size--) write(*buffer++); }
-  FORCE_INLINE static void print(const String& s) { for (int i = 0; i < (int)s.length(); i++) write(s[i]); }
-  FORCE_INLINE static void print(const char* str) { write(str); }
-
-  static void print(char, int = 0);
-  static void print(unsigned char, int = 0);
-  static void print(int, int = DEC);
-  static void print(unsigned int, int = DEC);
-  static void print(long, int = DEC);
-  static void print(unsigned long, int = DEC);
-  static void print(double, int = 2);
-
-  static void println(const String& s);
-  static void println(const char[]);
-  static void println(char, int = 0);
-  static void println(unsigned char, int = 0);
-  static void println(int, int = DEC);
-  static void println(unsigned int, int = DEC);
-  static void println(long, int = DEC);
-  static void println(unsigned long, int = DEC);
-  static void println(double, int = 2);
-  static void println();
-  operator bool() { return true; }
-
-private:
-  static void printNumber(unsigned long, const uint8_t);
-  static void printFloat(double, uint8_t);
 };
 
 // Serial port configuration
@@ -174,9 +141,11 @@ struct MarlinSerialCfg {
 };
 
 #if SERIAL_PORT >= 0
-  extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT>> customizedSerial1;
+  typedef Serial1Class< MarlinSerial< MarlinSerialCfg<SERIAL_PORT> > > MSerialT;
+  extern MSerialT customizedSerial1;
 #endif
 
 #if defined(SERIAL_PORT_2) && SERIAL_PORT_2 >= 0
-  extern MarlinSerial<MarlinSerialCfg<SERIAL_PORT_2>> customizedSerial2;
+  typedef Serial1Class< MarlinSerial< MarlinSerialCfg<SERIAL_PORT_2> > > MSerialT2;
+  extern MSerialT2 customizedSerial2;
 #endif

Marlin/src/HAL/DUE/MarlinSerialUSB.cpp

@@ -33,10 +33,6 @@
 
 #include "MarlinSerialUSB.h"
 
-#if ENABLED(EMERGENCY_PARSER)
-  #include "../../feature/e_parser.h"
-#endif
-
 // Imports from Atmel USB Stack/CDC implementation
 extern "C" {
   bool usb_task_cdc_isenabled();
@@ -50,10 +46,6 @@ extern "C" {
 // Pending character
 static int pending_char = -1;
 
-#if ENABLED(EMERGENCY_PARSER)
-  static EmergencyParser::State emergency_state; // = EP_RESET
-#endif
-
 // Public Methods
 void MarlinSerialUSB::begin(const long) {}
 
@@ -73,7 +65,7 @@ int MarlinSerialUSB::peek() {
 
   pending_char = udi_cdc_getc();
 
-  TERN_(EMERGENCY_PARSER, emergency_parser.update(emergency_state, (char)pending_char));
+  TERN_(EMERGENCY_PARSER, emergency_parser.update(static_cast<MSerialT*>(this)->emergency_state, (char)pending_char));
 
   return pending_char;
 }
@@ -95,29 +87,27 @@ int MarlinSerialUSB::read() {
 
   int c = udi_cdc_getc();
 
-  TERN_(EMERGENCY_PARSER, emergency_parser.update(emergency_state, (char)c));
+  TERN_(EMERGENCY_PARSER, emergency_parser.update(static_cast<MSerialT*>(this)->emergency_state, (char)c));
 
   return c;
 }
 
-bool MarlinSerialUSB::available() {
+int MarlinSerialUSB::available() {
-    /* If Pending chars */
+  if (pending_char > 0) return pending_char;
-  return pending_char >= 0 ||
+  return pending_char == 0 ||
-    /* or USB CDC enumerated and configured on the PC side and some
+    // or USB CDC enumerated and configured on the PC side and some bytes where sent to us */
-       bytes where sent to us */
+    (usb_task_cdc_isenabled() && udi_cdc_is_rx_ready());
-      (usb_task_cdc_isenabled() && udi_cdc_is_rx_ready());
 }
 
 void MarlinSerialUSB::flush() { }
-void MarlinSerialUSB::flushTX() { }
 
-void MarlinSerialUSB::write(const uint8_t c) {
+size_t MarlinSerialUSB::write(const uint8_t c) {
 
   /* Do not even bother sending anything if USB CDC is not enumerated
      or not configured on the PC side or there is no program on the PC
      listening to our messages */
   if (!usb_task_cdc_isenabled() || !usb_task_cdc_dtr_active())
-    return;
+    return 0;
 
   /* Wait until the PC has read the pending to be sent data */
   while (usb_task_cdc_isenabled() &&
@@ -129,161 +119,20 @@ void MarlinSerialUSB::write(const uint8_t c) {
      or not configured on the PC side or there is no program on the PC
      listening to our messages at this point */
   if (!usb_task_cdc_isenabled() || !usb_task_cdc_dtr_active())
-    return;
+    return 0;
 
   // Fifo full
   //  udi_cdc_signal_overrun();
   udi_cdc_putc(c);
-}
+  return 1;
-
-/**
- * Imports from print.h
- */
-
-void MarlinSerialUSB::print(char c, int base) {
-  print((long)c, base);
-}
-
-void MarlinSerialUSB::print(unsigned char b, int base) {
-  print((unsigned long)b, base);
-}
-
-void MarlinSerialUSB::print(int n, int base) {
-  print((long)n, base);
-}
-
-void MarlinSerialUSB::print(unsigned int n, int base) {
-  print((unsigned long)n, base);
-}
-
-void MarlinSerialUSB::print(long n, int base) {
-  if (base == 0)
-    write(n);
-  else if (base == 10) {
-    if (n < 0) {
-      print('-');
-      n = -n;
-    }
-    printNumber(n, 10);
-  }
-  else
-    printNumber(n, base);
-}
-
-void MarlinSerialUSB::print(unsigned long n, int base) {
-  if (base == 0) write(n);
-  else printNumber(n, base);
-}
-
-void MarlinSerialUSB::print(double n, int digits) {
-  printFloat(n, digits);
-}
-
-void MarlinSerialUSB::println() {
-  print('\r');
-  print('\n');
-}
-
-void MarlinSerialUSB::println(const String& s) {
-  print(s);
-  println();
-}
-
-void MarlinSerialUSB::println(const char c[]) {
-  print(c);
-  println();
-}
-
-void MarlinSerialUSB::println(char c, int base) {
-  print(c, base);
-  println();
-}
-
-void MarlinSerialUSB::println(unsigned char b, int base) {
-  print(b, base);
-  println();
-}
-
-void MarlinSerialUSB::println(int n, int base) {
-  print(n, base);
-  println();
-}
-
-void MarlinSerialUSB::println(unsigned int n, int base) {
-  print(n, base);
-  println();
-}
-
-void MarlinSerialUSB::println(long n, int base) {
-  print(n, base);
-  println();
-}
-
-void MarlinSerialUSB::println(unsigned long n, int base) {
-  print(n, base);
-  println();
-}
-
-void MarlinSerialUSB::println(double n, int digits) {
-  print(n, digits);
-  println();
-}
-
-// Private Methods
-
-void MarlinSerialUSB::printNumber(unsigned long n, uint8_t base) {
-  if (n) {
-    unsigned char buf[8 * sizeof(long)]; // Enough space for base 2
-    int8_t i = 0;
-    while (n) {
-      buf[i++] = n % base;
-      n /= base;
-    }
-    while (i--)
-      print((char)(buf[i] + (buf[i] < 10 ? '0' : 'A' - 10)));
-  }
-  else
-    print('0');
-}
-
-void MarlinSerialUSB::printFloat(double number, uint8_t digits) {
-  // Handle negative numbers
-  if (number < 0.0) {
-    print('-');
-    number = -number;
-  }
-
-  // Round correctly so that print(1.999, 2) prints as "2.00"
-  double rounding = 0.5;
-  LOOP_L_N(i, digits)
-    rounding *= 0.1;
-
-  number += rounding;
-
-  // Extract the integer part of the number and print it
-  unsigned long int_part = (unsigned long)number;
-  double remainder = number - (double)int_part;
-  print(int_part);
-
-  // Print the decimal point, but only if there are digits beyond
-  if (digits) {
-    print('.');
-    // Extract digits from the remainder one at a time
-    while (digits--) {
-      remainder *= 10.0;
-      int toPrint = int(remainder);
-      print(toPrint);
-      remainder -= toPrint;
-    }
-  }
 }
 
 // Preinstantiate
 #if SERIAL_PORT == -1
-  MarlinSerialUSB customizedSerial1;
+  MSerialT customizedSerial1(TERN0(EMERGENCY_PARSER, true));
 #endif
 #if SERIAL_PORT_2 == -1
-  MarlinSerialUSB customizedSerial2;
+  MSerialT customizedSerial2(TERN0(EMERGENCY_PARSER, true));
 #endif
 
 #endif // HAS_USB_SERIAL

Marlin/src/HAL/DUE/MarlinSerialUSB.h

@@ -27,73 +27,37 @@
  */
 
 #include "../../inc/MarlinConfig.h"
-
 #if HAS_USB_SERIAL
 
 #include <WString.h>
+#include "../../core/serial_hook.h"
 
-#define DEC 10
-#define HEX 16
-#define OCT 8
-#define BIN 2
 
-class MarlinSerialUSB {
+struct MarlinSerialUSB {
-
+  void begin(const long);
-public:
+  void end();
-  MarlinSerialUSB() {};
+  int peek();
-  static void begin(const long);
+  int read();
-  static void end();
+  void flush();
-  static int peek();
+  int available();
-  static int read();
+  size_t write(const uint8_t c);
-  static void flush();
-  static void flushTX();
-  static bool available();
-  static void write(const uint8_t c);
 
   #if ENABLED(SERIAL_STATS_DROPPED_RX)
-    FORCE_INLINE static uint32_t dropped() { return 0; }
+    FORCE_INLINE uint32_t dropped() { return 0; }
   #endif
 
   #if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
-    FORCE_INLINE static int rxMaxEnqueued() { return 0; }
+    FORCE_INLINE int rxMaxEnqueued() { return 0; }
   #endif
-
-  FORCE_INLINE static void write(const char* str) { while (*str) write(*str++); }
-  FORCE_INLINE static void write(const uint8_t* buffer, size_t size) { while (size--) write(*buffer++); }
-  FORCE_INLINE static void print(const String& s) { for (int i = 0; i < (int)s.length(); i++) write(s[i]); }
-  FORCE_INLINE static void print(const char* str) { write(str); }
-
-  static void print(char, int = 0);
-  static void print(unsigned char, int = 0);
-  static void print(int, int = DEC);
-  static void print(unsigned int, int = DEC);
-  static void print(long, int = DEC);
-  static void print(unsigned long, int = DEC);
-  static void print(double, int = 2);
-
-  static void println(const String& s);
-  static void println(const char[]);
-  static void println(char, int = 0);
-  static void println(unsigned char, int = 0);
-  static void println(int, int = DEC);
-  static void println(unsigned int, int = DEC);
-  static void println(long, int = DEC);
-  static void println(unsigned long, int = DEC);
-  static void println(double, int = 2);
-  static void println();
-  operator bool() { return true; }
-
-private:
-  static void printNumber(unsigned long, const uint8_t);
-  static void printFloat(double, uint8_t);
 };
+typedef Serial1Class<MarlinSerialUSB> MSerialT;
 
 #if SERIAL_PORT == -1
-  extern MarlinSerialUSB customizedSerial1;
+  extern MSerialT customizedSerial1;
 #endif
 
 #if SERIAL_PORT_2 == -1
-  extern MarlinSerialUSB customizedSerial2;
+  extern MSerialT customizedSerial2;
 #endif
 
 #endif // HAS_USB_SERIAL

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

@@ -59,6 +59,7 @@
 
 #if ENABLED(U8GLIB_ST7920)
 
+#include "../../../inc/MarlinConfig.h"
 #include "../../shared/Delay.h"
 
 #include <U8glib.h>

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

@@ -59,6 +59,7 @@
 
 #if HAS_MARLINUI_U8GLIB
 
+#include "../../../inc/MarlinConfig.h"
 #include "../../shared/Delay.h"
 
 #include <U8glib.h>

Marlin/src/HAL/DUE/fastio.h

@@ -50,7 +50,7 @@
 #define PWM_PIN(P)              WITHIN(P, 2, 13)
 
 #ifndef MASK
-  #define MASK(PIN) (1 << PIN)
+  #define MASK(PIN) _BV(PIN)
 #endif
 
 /**

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

@@ -57,5 +57,5 @@
 #endif
 
 #if HAS_TMC_SW_SERIAL
-  #error "TMC220x Software Serial is not supported on this platform."
+  #error "TMC220x Software Serial is not supported on the DUE platform."
 #endif

Marlin/src/HAL/DUE/timers.cpp

@@ -121,7 +121,7 @@ void HAL_timer_disable_interrupt(const uint8_t timer_num) {
 
 // missing from CMSIS: Check if interrupt is enabled or not
 static bool NVIC_GetEnabledIRQ(IRQn_Type IRQn) {
-  return (NVIC->ISER[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F))) != 0;
+  return TEST(NVIC->ISER[uint32_t(IRQn) >> 5], uint32_t(IRQn) & 0x1F);
 }
 
 bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {

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

@@ -68,7 +68,7 @@ Ctrl_status sd_mmc_spi_usb_read_10(uint32_t addr, uint16_t nb_sector) {
   {
     char buffer[80];
     sprintf_P(buffer, PSTR("SDRD: %d @ 0x%08x\n"), nb_sector, addr);
-    PORT_REDIRECT(0);
+    PORT_REDIRECT(SERIAL_PORTMASK(0));
     SERIAL_ECHO(buffer);
   }
   #endif
@@ -108,7 +108,7 @@ Ctrl_status sd_mmc_spi_usb_write_10(uint32_t addr, uint16_t nb_sector) {
   {
     char buffer[80];
     sprintf_P(buffer, PSTR("SDWR: %d @ 0x%08x\n"), nb_sector, addr);
-    PORT_REDIRECT(0);
+    PORT_REDIRECT(SERIAL_PORTMASK(0));
     SERIAL_ECHO(buffer);
   }
   #endif

Marlin/src/HAL/ESP32/FlushableHardwareSerial.cpp

@@ -20,14 +20,10 @@
  *
  */
 
-#include "FlushableHardwareSerial.h"
-
 #ifdef ARDUINO_ARCH_ESP32
 
-FlushableHardwareSerial::FlushableHardwareSerial(int uart_nr)
+#include "FlushableHardwareSerial.h"
-    : HardwareSerial(uart_nr)
-{}
 
-FlushableHardwareSerial flushableSerial(0);
+Serial1Class<FlushableHardwareSerial> flushableSerial(false, 0);
 
-#endif // ARDUINO_ARCH_ESP32
+#endif

Marlin/src/HAL/ESP32/FlushableHardwareSerial.h

@@ -21,17 +21,14 @@
  */
 #pragma once
 
-#ifdef ARDUINO_ARCH_ESP32
-
 #include <HardwareSerial.h>
 
+#include "../shared/Marduino.h"
+#include "../../core/serial_hook.h"
+
 class FlushableHardwareSerial : public HardwareSerial {
 public:
-  FlushableHardwareSerial(int uart_nr);
+  FlushableHardwareSerial(int uart_nr) : HardwareSerial(uart_nr) {}
-
-  inline void flushTX() { /* No need to flush the hardware serial, but defined here for compatibility. */ }
 };
 
-extern FlushableHardwareSerial flushableSerial;
+extern Serial1Class<FlushableHardwareSerial> flushableSerial;
-
-#endif // ARDUINO_ARCH_ESP32

Marlin/src/HAL/ESP32/HAL.cpp

@@ -40,6 +40,10 @@
   #endif
 #endif
 
+#if ENABLED(ESP3D_WIFISUPPORT)
+  DefaultSerial1 MSerial0(false, Serial2Socket);
+#endif
+
 // ------------------------
 // Externs
 // ------------------------
@@ -86,8 +90,6 @@ volatile int numPWMUsed = 0,
 
 #endif
 
-void HAL_init() { TERN_(I2S_STEPPER_STREAM, i2s_init()); }
-
 void HAL_init_board() {
 
   #if ENABLED(ESP3D_WIFISUPPORT)
@@ -122,6 +124,10 @@ void HAL_init_board() {
     #endif
   #endif
 
+  // Initialize the i2s peripheral only if the I2S stepper stream is enabled.
+  // The following initialization is performed after Serial1 and Serial2 are defined as
+  // their native pins might conflict with the i2s stream even when they are remapped.
+  TERN_(I2S_STEPPER_STREAM, i2s_init());
 }
 
 void HAL_idletask() {
@@ -179,6 +185,7 @@ void HAL_adc_init() {
   TERN_(HAS_TEMP_ADC_7, adc3_set_attenuation(get_channel(TEMP_7_PIN), ADC_ATTEN_11db));
   TERN_(HAS_HEATED_BED, adc1_set_attenuation(get_channel(TEMP_BED_PIN), ADC_ATTEN_11db));
   TERN_(HAS_TEMP_CHAMBER, adc1_set_attenuation(get_channel(TEMP_CHAMBER_PIN), ADC_ATTEN_11db));
+  TERN_(HAS_TEMP_COOLER, adc1_set_attenuation(get_channel(TEMP_COOLER_PIN), ADC_ATTEN_11db));
   TERN_(FILAMENT_WIDTH_SENSOR, adc1_set_attenuation(get_channel(FILWIDTH_PIN), ADC_ATTEN_11db));
 
   // Note that adc2 is shared with the WiFi module, which has higher priority, so the conversion may fail.

Marlin/src/HAL/ESP32/HAL.h

@@ -51,13 +51,15 @@
 
 extern portMUX_TYPE spinlock;
 
-#define MYSERIAL0 flushableSerial
+#define MYSERIAL1 flushableSerial
 
 #if EITHER(WIFISUPPORT, ESP3D_WIFISUPPORT)
   #if ENABLED(ESP3D_WIFISUPPORT)
-    #define MYSERIAL1 Serial2Socket
+    typedef ForwardSerial1Class< decltype(Serial2Socket) > DefaultSerial1;
+    extern DefaultSerial1 MSerial0;
+    #define MYSERIAL2 MSerial0
   #else
-    #define MYSERIAL1 webSocketSerial
+    #define MYSERIAL2 webSocketSerial
   #endif
 #endif
 
@@ -67,10 +69,6 @@ extern portMUX_TYPE spinlock;
 #define ENABLE_ISRS()  if (spinlock.owner != portMUX_FREE_VAL) portEXIT_CRITICAL(&spinlock)
 #define DISABLE_ISRS() portENTER_CRITICAL(&spinlock)
 
-// Fix bug in pgm_read_ptr
-#undef pgm_read_ptr
-#define pgm_read_ptr(addr) (*(addr))
-
 // ------------------------
 // Types
 // ------------------------
@@ -90,6 +88,13 @@ extern uint16_t HAL_adc_result;
 // Public functions
 // ------------------------
 
+//
+// Tone
+//
+void toneInit();
+void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration=0);
+void noTone(const pin_t _pin);
+
 // clear reset reason
 void HAL_clear_reset_source();
 
@@ -134,7 +139,7 @@ void HAL_adc_start_conversion(const uint8_t adc_pin);
 #define HAL_IDLETASK 1
 #define BOARD_INIT() HAL_init_board();
 void HAL_idletask();
-void HAL_init();
+inline void HAL_init() {}
 void HAL_init_board();
 
 //

Marlin/src/HAL/ESP32/Servo.h

@@ -30,7 +30,7 @@ class Servo {
                    MAX_PULSE_WIDTH = 2400,  // Longest pulse sent to a servo
                    TAU_MSEC = 20,
                    TAU_USEC = (TAU_MSEC * 1000),
-                   MAX_COMPARE = ((1 << 16) - 1), // 65535
+                   MAX_COMPARE = _BV(16) - 1, // 65535
                    CHANNEL_MAX_NUM = 16;
 
 public:

Marlin/src/HAL/ESP32/Tone.cpp

@@ -0,0 +1,59 @@
+/**
+ * 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
+ *
+ * Copypaste of 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
+ * (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/>.
+ *
+ */
+
+/**
+ * Description: Tone function for ESP32
+ * Derived from https://forum.arduino.cc/index.php?topic=136500.msg2903012#msg2903012
+ */
+
+#ifdef ARDUINO_ARCH_ESP32
+
+#include "../../inc/MarlinConfig.h"
+#include "HAL.h"
+
+static pin_t tone_pin;
+volatile static int32_t toggles;
+
+void tone(const pin_t _pin, const unsigned int frequency, const unsigned long duration) {
+  tone_pin = _pin;
+  toggles = 2 * frequency * duration / 1000;
+  HAL_timer_start(TONE_TIMER_NUM, 2 * frequency);
+}
+
+void noTone(const pin_t _pin) {
+  HAL_timer_disable_interrupt(TONE_TIMER_NUM);
+  WRITE(_pin, LOW);
+}
+
+HAL_TONE_TIMER_ISR() {
+  HAL_timer_isr_prologue(TONE_TIMER_NUM);
+
+  if (toggles) {
+    toggles--;
+    TOGGLE(tone_pin);
+  }
+  else noTone(tone_pin);                         // turn off interrupt
+}
+
+#endif // ARDUINO_ARCH_ESP32

Marlin/src/HAL/ESP32/WebSocketSerial.cpp

@@ -29,7 +29,7 @@
 #include "wifi.h"
 #include <ESPAsyncWebServer.h>
 
-WebSocketSerial webSocketSerial;
+MSerialT webSocketSerial(false);
 AsyncWebSocket ws("/ws"); // TODO Move inside the class.
 
 // RingBuffer impl
@@ -144,9 +144,5 @@ size_t WebSocketSerial::write(const uint8_t* buffer, size_t size) {
   return written;
 }
 
-void WebSocketSerial::flushTX() {
-  // No need to do anything as there's no benefit to sending partial lines over the websocket connection.
-}
-
 #endif // WIFISUPPORT
 #endif // ARDUINO_ARCH_ESP32

Marlin/src/HAL/ESP32/WebSocketSerial.h

@@ -22,6 +22,7 @@
 #pragma once
 
 #include "../../inc/MarlinConfig.h"
+#include "../../core/serial_hook.h"
 
 #include <Stream.h>
 
@@ -68,12 +69,9 @@ public:
   int peek();
   int read();
   void flush();
-  void flushTX();
   size_t write(const uint8_t c);
   size_t write(const uint8_t* buffer, size_t size);
 
-  operator bool() { return true; }
-
   #if ENABLED(SERIAL_STATS_DROPPED_RX)
     FORCE_INLINE uint32_t dropped() { return 0; }
   #endif
@@ -83,4 +81,5 @@ public:
   #endif
 };
 
-extern WebSocketSerial webSocketSerial;
+typedef Serial1Class<WebSocketSerial> MSerialT;
+extern MSerialT webSocketSerial;

Marlin/src/HAL/ESP32/inc/SanityCheck.h

@@ -30,9 +30,13 @@
 #endif
 
 #if HAS_TMC_SW_SERIAL
-  #error "TMC220x Software Serial is not supported on this platform."
+  #error "TMC220x Software Serial is not supported on ESP32."
 #endif
 
 #if BOTH(WIFISUPPORT, ESP3D_WIFISUPPORT)
   #error "Only enable one WiFi option, either WIFISUPPORT or ESP3D_WIFISUPPORT."
 #endif
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+  #error "POSTMORTEM_DEBUGGING is not yet supported on ESP32."
+#endif

Marlin/src/HAL/ESP32/timers.cpp

@@ -45,7 +45,7 @@ const tTimerConfig TimerConfig [NUM_HARDWARE_TIMERS] = {
   { TIMER_GROUP_0, TIMER_0, STEPPER_TIMER_PRESCALE, stepTC_Handler }, // 0 - Stepper
   { TIMER_GROUP_0, TIMER_1,    TEMP_TIMER_PRESCALE, tempTC_Handler }, // 1 - Temperature
   { TIMER_GROUP_1, TIMER_0,     PWM_TIMER_PRESCALE, pwmTC_Handler  }, // 2 - PWM
-  { TIMER_GROUP_1, TIMER_1,                      1, nullptr }, // 3
+  { TIMER_GROUP_1, TIMER_1,    TONE_TIMER_PRESCALE, toneTC_Handler }, // 3 - Tone
 };
 
 // ------------------------

Marlin/src/HAL/ESP32/timers.h

@@ -44,6 +44,9 @@ typedef uint64_t hal_timer_t;
 #ifndef PWM_TIMER_NUM
   #define PWM_TIMER_NUM         2  // index of timer to use for PWM outputs
 #endif
+#ifndef TONE_TIMER_NUM
+  #define TONE_TIMER_NUM        3  // index of timer for beeper tones
+#endif
 
 #define HAL_TIMER_RATE APB_CLK_FREQ // frequency of timer peripherals
 
@@ -59,6 +62,8 @@ typedef uint64_t hal_timer_t;
 
 #define STEP_TIMER_MIN_INTERVAL   8 // minimum time in µs between stepper interrupts
 
+#define TONE_TIMER_PRESCALE    1000 // Arbitrary value, no idea what i'm doing here
+
 #define TEMP_TIMER_PRESCALE    1000 // prescaler for setting Temp timer, 72Khz
 #define TEMP_TIMER_FREQUENCY   1000 // temperature interrupt frequency
 
@@ -90,11 +95,15 @@ typedef uint64_t hal_timer_t;
 #ifndef HAL_PWM_TIMER_ISR
   #define HAL_PWM_TIMER_ISR() extern "C" void pwmTC_Handler()
 #endif
+#ifndef HAL_TONE_TIMER_ISR
+  #define HAL_TONE_TIMER_ISR() extern "C" void toneTC_Handler()
+#endif
 
 extern "C" {
   void tempTC_Handler();
   void stepTC_Handler();
   void pwmTC_Handler();
+  void toneTC_Handler();
 }
 
 // ------------------------

Marlin/src/HAL/HAL.h

@@ -29,12 +29,6 @@
 
 #include HAL_PATH(.,HAL.h)
 
-#ifdef SERIAL_PORT_2
-  #define NUM_SERIAL 2
-#else
-  #define NUM_SERIAL 1
-#endif
-
 #define HAL_ADC_RANGE _BV(HAL_ADC_RESOLUTION)
 
 #ifndef I2C_ADDRESS

Marlin/src/HAL/LINUX/HAL.cpp

@@ -24,7 +24,7 @@
 #include "../../inc/MarlinConfig.h"
 #include "../shared/Delay.h"
 
-HalSerial usb_serial;
+MSerialT usb_serial(TERN0(EMERGENCY_PARSER, true));
 
 // U8glib required functions
 extern "C" {

Marlin/src/HAL/LINUX/HAL.h

@@ -60,8 +60,8 @@ uint8_t _getc();
 
 #define SHARED_SERVOS HAS_SERVOS
 
-extern HalSerial usb_serial;
+extern MSerialT usb_serial;
-#define MYSERIAL0 usb_serial
+#define MYSERIAL1 usb_serial
 
 #define ST7920_DELAY_1 DELAY_NS(600)
 #define ST7920_DELAY_2 DELAY_NS(750)
@@ -113,8 +113,3 @@ inline void HAL_reboot() {}  // reboot the board or restart the bootloader
 FORCE_INLINE static void DELAY_CYCLES(uint64_t x) {
   Clock::delayCycles(x);
 }
-
-// Add strcmp_P if missing
-#ifndef strcmp_P
-  #define strcmp_P(a, b) strcmp((a), (b))
-#endif

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

@@ -35,5 +35,9 @@
 #endif
 
 #if HAS_TMC_SW_SERIAL
-  #error "TMC220x Software Serial is not supported on this platform."
+  #error "TMC220x Software Serial is not supported on LINUX."
+#endif
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+  #error "POSTMORTEM_DEBUGGING is not yet supported on LINUX."
 #endif

Marlin/src/HAL/LINUX/include/Arduino.h

@@ -73,27 +73,6 @@ extern "C" {
   void GpioDisableInt(uint32_t port, uint32_t pin);
 }
 
-// Program Memory
-#define pgm_read_ptr(addr)        (*((void**)(addr)))
-#define pgm_read_byte_near(addr)  (*((uint8_t*)(addr)))
-#define pgm_read_float_near(addr) (*((float*)(addr)))
-#define pgm_read_word_near(addr)  (*((uint16_t*)(addr)))
-#define pgm_read_dword_near(addr) (*((uint32_t*)(addr)))
-#define pgm_read_byte(addr)       pgm_read_byte_near(addr)
-#define pgm_read_float(addr)      pgm_read_float_near(addr)
-#define pgm_read_word(addr)       pgm_read_word_near(addr)
-#define pgm_read_dword(addr)      pgm_read_dword_near(addr)
-
-using std::memcpy;
-#define memcpy_P memcpy
-#define sprintf_P sprintf
-#define strstr_P strstr
-#define strncpy_P strncpy
-#define vsnprintf_P vsnprintf
-#define strcpy_P strcpy
-#define snprintf_P snprintf
-#define strlen_P strlen
-
 // Time functions
 extern "C" void delay(const int milis);
 void _delay_ms(const int delay);

Marlin/src/HAL/LINUX/include/serial.h

@@ -25,6 +25,7 @@
 #if ENABLED(EMERGENCY_PARSER)
   #include "../../../feature/e_parser.h"
 #endif
+#include "../../../core/serial_hook.h"
 
 #include <stdarg.h>
 #include <stdio.h>
@@ -73,19 +74,11 @@ private:
   volatile uint32_t index_read;
 };
 
-class HalSerial {
+struct HalSerial {
-public:
-
-  #if ENABLED(EMERGENCY_PARSER)
-    EmergencyParser::State emergency_state;
-    static inline bool emergency_parser_enabled() { return true; }
-  #endif
-
   HalSerial() { host_connected = true; }
 
   void begin(int32_t) {}
-
+  void end()          {}
-  void end() {}
 
   int peek() {
     uint8_t value;
@@ -100,7 +93,7 @@ public:
     return transmit_buffer.write(c);
   }
 
-  operator bool() { return host_connected; }
+  bool connected() { return host_connected; }
 
   uint16_t available() {
     return (uint16_t)receive_buffer.available();
@@ -117,92 +110,9 @@ public:
       while (transmit_buffer.available()) { /* nada */ }
   }
 
-  void printf(const char *format, ...) {
-    static char buffer[256];
-    va_list vArgs;
-    va_start(vArgs, format);
-    int length = vsnprintf((char *) buffer, 256, (char const *) format, vArgs);
-    va_end(vArgs);
-    if (length > 0 && length < 256) {
-      if (host_connected) {
-        for (int i = 0; i < length;) {
-          if (transmit_buffer.write(buffer[i])) {
-            ++i;
-          }
-        }
-      }
-    }
-  }
-
-  #define DEC 10
-  #define HEX 16
-  #define OCT 8
-  #define BIN 2
-
-  void print_bin(uint32_t value, uint8_t num_digits) {
-    uint32_t mask = 1 << (num_digits -1);
-    for (uint8_t i = 0; i < num_digits; i++) {
-      if (!(i %  4) && i) write(' ');
-      if (!(i % 16) && i) write(' ');
-      if (value & mask)   write('1');
-      else                write('0');
-      value <<= 1;
-    }
-  }
-
-  void print(const char value[]) { printf("%s" , value); }
-  void print(char value, int nbase = 0) {
-    if (nbase == BIN) print_bin(value, 8);
-    else if (nbase == OCT) printf("%3o", value);
-    else if (nbase == HEX) printf("%2X", value);
-    else if (nbase == DEC ) printf("%d", value);
-    else printf("%c" , value);
-  }
-  void print(unsigned char value, int nbase = 0) {
-    if (nbase == BIN) print_bin(value, 8);
-    else if (nbase == OCT) printf("%3o", value);
-    else if (nbase == HEX) printf("%2X", value);
-    else printf("%u" , value);
-  }
-  void print(int value, int nbase = 0) {
-    if (nbase == BIN) print_bin(value, 16);
-    else if (nbase == OCT) printf("%6o", value);
-    else if (nbase == HEX) printf("%4X", value);
-    else printf("%d", value);
-  }
-  void print(unsigned int value, int nbase = 0) {
-    if (nbase == BIN) print_bin(value, 16);
-    else if (nbase == OCT) printf("%6o", value);
-    else if (nbase == HEX) printf("%4X", value);
-    else printf("%u" , value);
-  }
-  void print(long value, int nbase = 0) {
-    if (nbase == BIN) print_bin(value, 32);
-    else if (nbase == OCT) printf("%11o", value);
-    else if (nbase == HEX) printf("%8X", value);
-    else printf("%ld" , value);
-  }
-  void print(unsigned long value, int nbase = 0) {
-    if (nbase == BIN) print_bin(value, 32);
-    else if (nbase == OCT) printf("%11o", value);
-    else if (nbase == HEX) printf("%8X", value);
-    else printf("%lu" , value);
-  }
-  void print(float value, int round = 6)  { printf("%f" , value); }
-  void print(double value, int round = 6) { printf("%f" , value); }
-
-  void println(const char value[]) { printf("%s\n" , value); }
-  void println(char value, int nbase = 0) { print(value, nbase); println(); }
-  void println(unsigned char value, int nbase = 0) { print(value, nbase); println(); }
-  void println(int value, int nbase = 0) { print(value, nbase); println(); }
-  void println(unsigned int value, int nbase = 0) { print(value, nbase); println(); }
-  void println(long value, int nbase = 0) { print(value, nbase); println(); }
-  void println(unsigned long value, int nbase = 0) { print(value, nbase); println(); }
-  void println(float value, int round = 6) { printf("%f\n" , value); }
-  void println(double value, int round = 6) { printf("%f\n" , value); }
-  void println() { print('\n'); }
-
   volatile RingBuffer<uint8_t, 128> receive_buffer;
   volatile RingBuffer<uint8_t, 128> transmit_buffer;
   volatile bool host_connected;
 };
+
+typedef Serial1Class<HalSerial> MSerialT;

Marlin/src/HAL/LINUX/main.cpp

@@ -1,6 +1,5 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * This program is free software: you can redistribute it and/or modify
@@ -106,8 +105,8 @@ int main() {
   std::thread write_serial (write_serial_thread);
   std::thread read_serial (read_serial_thread);
 
-  #ifdef MYSERIAL0
+  #ifdef MYSERIAL1
-    MYSERIAL0.begin(BAUDRATE);
+    MYSERIAL1.begin(BAUDRATE);
     SERIAL_ECHOLNPGM("x86_64 Initialized");
     SERIAL_FLUSHTX();
   #endif

Marlin/src/HAL/LPC1768/DebugMonitor.cpp

@@ -1,322 +0,0 @@
-/**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- *
- */
-#ifdef TARGET_LPC1768
-
-#include "../../core/macros.h"
-#include "../../core/serial.h"
-#include <stdarg.h>
-
-#include "../shared/backtrace/unwinder.h"
-#include "../shared/backtrace/unwmemaccess.h"
-#include "watchdog.h"
-#include <debug_frmwrk.h>
-
-
-// Debug monitor that dumps to the Programming port all status when
-// an exception or WDT timeout happens - And then resets the board
-
-// All the Monitor routines must run with interrupts disabled and
-// under an ISR execution context. That is why we cannot reuse the
-// Serial interrupt routines or any C runtime, as we don't know the
-// state we are when running them
-
-// A SW memory barrier, to ensure GCC does not overoptimize loops
-#define sw_barrier() __asm__ volatile("": : :"memory");
-
-// (re)initialize UART0 as a monitor output to 250000,n,8,1
-static void TXBegin() {
-}
-
-// Send character through UART with no interrupts
-static void TX(char c) {
-  _DBC(c);
-}
-
-// Send String through UART
-static void TX(const char* s) {
-  while (*s) TX(*s++);
-}
-
-static void TXDigit(uint32_t d) {
-  if (d < 10) TX((char)(d+'0'));
-  else if (d < 16) TX((char)(d+'A'-10));
-  else TX('?');
-}
-
-// Send Hex number thru UART
-static void TXHex(uint32_t v) {
-  TX("0x");
-  for (uint8_t i = 0; i < 8; i++, v <<= 4)
-    TXDigit((v >> 28) & 0xF);
-}
-
-// Send Decimal number thru UART
-static void TXDec(uint32_t v) {
-  if (!v) {
-    TX('0');
-    return;
-  }
-
-  char nbrs[14];
-  char *p = &nbrs[0];
-  while (v != 0) {
-    *p++ = '0' + (v % 10);
-    v /= 10;
-  }
-  do {
-    p--;
-    TX(*p);
-  } while (p != &nbrs[0]);
-}
-
-// Dump a backtrace entry
-static bool UnwReportOut(void* ctx, const UnwReport* bte) {
-  int* p = (int*)ctx;
-
-  (*p)++;
-  TX('#'); TXDec(*p); TX(" : ");
-  TX(bte->name?bte->name:"unknown"); TX('@'); TXHex(bte->function);
-  TX('+'); TXDec(bte->address - bte->function);
-  TX(" PC:");TXHex(bte->address); TX('\n');
-  return true;
-}
-
-#ifdef UNW_DEBUG
-  void UnwPrintf(const char* format, ...) {
-    char dest[256];
-    va_list argptr;
-    va_start(argptr, format);
-    vsprintf(dest, format, argptr);
-    va_end(argptr);
-    TX(&dest[0]);
-  }
-#endif
-
-/* Table of function pointers for passing to the unwinder */
-static const UnwindCallbacks UnwCallbacks = {
-  UnwReportOut,
-  UnwReadW,
-  UnwReadH,
-  UnwReadB
-  #ifdef UNW_DEBUG
-   ,UnwPrintf
-  #endif
-};
-
-
-/**
- * HardFaultHandler_C:
- * This is called from the HardFault_HandlerAsm with a pointer the Fault stack
- * as the parameter. We can then read the values from the stack and place them
- * into local variables for ease of reading.
- * We then read the various Fault Status and Address Registers to help decode
- * cause of the fault.
- * The function ends with a BKPT instruction to force control back into the debugger
- */
-extern "C"
-void HardFault_HandlerC(unsigned long *sp, unsigned long lr, unsigned long cause) {
-
-  static const char* causestr[] = {
-    "NMI","Hard","Mem","Bus","Usage","Debug","WDT","RSTC"
-  };
-
-  UnwindFrame btf;
-
-  // Dump report to the Programming port (interrupts are DISABLED)
-  TXBegin();
-  TX("\n\n## Software Fault detected ##\n");
-  TX("Cause: "); TX(causestr[cause]); TX('\n');
-
-  TX("R0   : "); TXHex(((unsigned long)sp[0])); TX('\n');
-  TX("R1   : "); TXHex(((unsigned long)sp[1])); TX('\n');
-  TX("R2   : "); TXHex(((unsigned long)sp[2])); TX('\n');
-  TX("R3   : "); TXHex(((unsigned long)sp[3])); TX('\n');
-  TX("R12  : "); TXHex(((unsigned long)sp[4])); TX('\n');
-  TX("LR   : "); TXHex(((unsigned long)sp[5])); TX('\n');
-  TX("PC   : "); TXHex(((unsigned long)sp[6])); TX('\n');
-  TX("PSR  : "); TXHex(((unsigned long)sp[7])); TX('\n');
-
-  // Configurable Fault Status Register
-  // Consists of MMSR, BFSR and UFSR
-  TX("CFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED28)))); TX('\n');
-
-  // Hard Fault Status Register
-  TX("HFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED2C)))); TX('\n');
-
-  // Debug Fault Status Register
-  TX("DFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED30)))); TX('\n');
-
-  // Auxiliary Fault Status Register
-  TX("AFSR : "); TXHex((*((volatile unsigned long *)(0xE000ED3C)))); TX('\n');
-
-  // Read the Fault Address Registers. These may not contain valid values.
-  // Check BFARVALID/MMARVALID to see if they are valid values
-  // MemManage Fault Address Register
-  TX("MMAR : "); TXHex((*((volatile unsigned long *)(0xE000ED34)))); TX('\n');
-
-  // Bus Fault Address Register
-  TX("BFAR : "); TXHex((*((volatile unsigned long *)(0xE000ED38)))); TX('\n');
-
-  TX("ExcLR: "); TXHex(lr); TX('\n');
-  TX("ExcSP: "); TXHex((unsigned long)sp); TX('\n');
-
-  btf.sp = ((unsigned long)sp) + 8*4; // The original stack pointer
-  btf.fp = btf.sp;
-  btf.lr = ((unsigned long)sp[5]);
-  btf.pc = ((unsigned long)sp[6]) | 1; // Force Thumb, as CORTEX only support it
-
-  // Perform a backtrace
-  TX("\nBacktrace:\n\n");
-  int ctr = 0;
-  UnwindStart(&btf, &UnwCallbacks, &ctr);
-
-  // Disable all NVIC interrupts
-  NVIC->ICER[0] = 0xFFFFFFFF;
-  NVIC->ICER[1] = 0xFFFFFFFF;
-
-  // Relocate VTOR table to default position
-  SCB->VTOR = 0;
-
-  // Clear cause of reset to prevent entering smoothie bootstrap
-  HAL_clear_reset_source();
-
-  // Restart watchdog
-  #if ENABLED(USE_WATCHDOG)
-    //WDT_Restart(WDT);
-    watchdog_init();
-  #endif
-
-  // Reset controller
-  NVIC_SystemReset();
-
-  // Nothing below here is compiled because NVIC_SystemReset loops forever
-
-  for (;;) { TERN_(USE_WATCHDOG, watchdog_init()); }
-}
-
-extern "C" {
-__attribute__((naked)) void NMI_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#0")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void HardFault_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#1")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void MemManage_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#2")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void BusFault_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#3")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void UsageFault_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#4")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void DebugMon_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#5")
-    A("b HardFault_HandlerC")
-  );
-}
-
-/* This is NOT an exception, it is an interrupt handler - Nevertheless, the framing is the same */
-__attribute__((naked)) void WDT_IRQHandler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#6")
-    A("b HardFault_HandlerC")
-  );
-}
-
-__attribute__((naked)) void RSTC_Handler() {
-  __asm__ __volatile__ (
-    ".syntax unified" "\n\t"
-    A("tst lr, #4")
-    A("ite eq")
-    A("mrseq r0, msp")
-    A("mrsne r0, psp")
-    A("mov r1,lr")
-    A("mov r2,#7")
-    A("b HardFault_HandlerC")
-  );
-}
-}
-#endif // TARGET_LPC1768

Marlin/src/HAL/LPC1768/HAL.cpp

@@ -29,6 +29,8 @@
   #include "watchdog.h"
 #endif
 
+DefaultSerial1 USBSerial(false, UsbSerial);
+
 uint32_t HAL_adc_reading = 0;
 
 // U8glib required functions
@@ -61,7 +63,12 @@ int16_t PARSED_PIN_INDEX(const char code, const int16_t dval) {
   return ind > -1 ? ind : dval;
 }
 
-void flashFirmware(const int16_t) { NVIC_SystemReset(); }
+void flashFirmware(const int16_t) {
+  delay(500);          // Give OS time to disconnect
+  USB_Connect(false);  // USB clear connection
+  delay(1000);         // Give OS time to notice
+  NVIC_SystemReset();
+}
 
 void HAL_clear_reset_source(void) {
   TERN_(USE_WATCHDOG, watchdog_clear_timeout_flag());

Marlin/src/HAL/LPC1768/HAL.h

@@ -60,31 +60,43 @@ extern "C" volatile uint32_t _millis;
   #define ST7920_DELAY_3 DELAY_NS(750)
 #endif
 
+typedef ForwardSerial1Class< decltype(UsbSerial) > DefaultSerial1;
+extern DefaultSerial1 USBSerial;
+
 #define _MSERIAL(X) MSerial##X
 #define MSERIAL(X) _MSERIAL(X)
-#define MSerial0 MSerial
 
 #if SERIAL_PORT == -1
-  #define MYSERIAL0 UsbSerial
+  #define MYSERIAL1 USBSerial
 #elif WITHIN(SERIAL_PORT, 0, 3)
-  #define MYSERIAL0 MSERIAL(SERIAL_PORT)
+  #define MYSERIAL1 MSERIAL(SERIAL_PORT)
 #else
   #error "SERIAL_PORT must be from -1 to 3. Please update your configuration."
 #endif
 
 #ifdef SERIAL_PORT_2
   #if SERIAL_PORT_2 == -1
-    #define MYSERIAL1 UsbSerial
+    #define MYSERIAL2 USBSerial
   #elif WITHIN(SERIAL_PORT_2, 0, 3)
-    #define MYSERIAL1 MSERIAL(SERIAL_PORT_2)
+    #define MYSERIAL2 MSERIAL(SERIAL_PORT_2)
   #else
     #error "SERIAL_PORT_2 must be from -1 to 3. Please update your configuration."
   #endif
 #endif
 
+#ifdef MMU2_SERIAL_PORT
+  #if MMU2_SERIAL_PORT == -1
+    #define MMU2_SERIAL USBSerial
+  #elif WITHIN(MMU2_SERIAL_PORT, 0, 3)
+    #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
+  #else
+    #error "MMU2_SERIAL_PORT must be from -1 to 3. Please update your configuration."
+  #endif
+#endif
+
 #ifdef LCD_SERIAL_PORT
   #if LCD_SERIAL_PORT == -1
-    #define LCD_SERIAL UsbSerial
+    #define LCD_SERIAL USBSerial
   #elif WITHIN(LCD_SERIAL_PORT, 0, 3)
     #define LCD_SERIAL MSERIAL(LCD_SERIAL_PORT)
   #else
@@ -204,16 +216,3 @@ void HAL_clear_reset_source(void);
 uint8_t HAL_get_reset_source(void);
 
 inline void HAL_reboot() {}  // reboot the board or restart the bootloader
-
-// Add strcmp_P if missing
-#ifndef strcmp_P
-  #define strcmp_P(a, b) strcmp((a), (b))
-#endif
-
-#ifndef strcat_P
-  #define strcat_P(a, b) strcat((a), (b))
-#endif
-
-#ifndef strcpy_P
-  #define strcpy_P(a, b) strcpy((a), (b))
-#endif

Marlin/src/HAL/LPC1768/HAL_MinSerial.cpp

@@ -0,0 +1,50 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#ifdef TARGET_LPC1768
+
+#include "HAL.h"
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+
+#include "../shared/HAL_MinSerial.h"
+#include <debug_frmwrk.h>
+
+static void TX(char c) { _DBC(c); }
+void install_min_serial() { HAL_min_serial_out = &TX; }
+
+#if DISABLED(DYNAMIC_VECTORTABLE)
+extern "C" {
+  __attribute__((naked)) void JumpHandler_ASM() {
+    __asm__ __volatile__ (
+      "b CommonHandler_ASM\n"
+    );
+  }
+  void __attribute__((naked, alias("JumpHandler_ASM"))) HardFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"))) BusFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"))) UsageFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"))) MemManage_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"))) NMI_Handler();
+}
+#endif
+
+#endif // POSTMORTEM_DEBUGGING
+#endif // TARGET_LPC1768

Marlin/src/HAL/LPC1768/MarlinSerial.cpp

@@ -24,21 +24,47 @@
 #include "../../inc/MarlinConfigPre.h"
 #include "MarlinSerial.h"
 
-#if USING_SERIAL_0
+#if ANY_SERIAL_IS(0)
-  MarlinSerial MSerial(LPC_UART0);
+  MarlinSerial _MSerial(LPC_UART0);
-  extern "C" void UART0_IRQHandler() { MSerial.IRQHandler(); }
+  MSerialT MSerial0(true, _MSerial);
+  extern "C" void UART0_IRQHandler() { _MSerial.IRQHandler(); }
 #endif
-#if USING_SERIAL_1
+#if ANY_SERIAL_IS(1)
-  MarlinSerial MSerial1((LPC_UART_TypeDef *) LPC_UART1);
+  MarlinSerial _MSerial1((LPC_UART_TypeDef *) LPC_UART1);
-  extern "C" void UART1_IRQHandler() { MSerial1.IRQHandler(); }
+  MSerialT MSerial1(true, _MSerial1);
+  extern "C" void UART1_IRQHandler() { _MSerial1.IRQHandler(); }
 #endif
-#if USING_SERIAL_2
+#if ANY_SERIAL_IS(2)
-  MarlinSerial MSerial2(LPC_UART2);
+  MarlinSerial _MSerial2(LPC_UART2);
-  extern "C" void UART2_IRQHandler() { MSerial2.IRQHandler(); }
+  MSerialT MSerial2(true, _MSerial2);
+  extern "C" void UART2_IRQHandler() { _MSerial2.IRQHandler(); }
 #endif
-#if USING_SERIAL_3
+#if ANY_SERIAL_IS(3)
-  MarlinSerial MSerial3(LPC_UART3);
+  MarlinSerial _MSerial3(LPC_UART3);
-  extern "C" void UART3_IRQHandler() { MSerial3.IRQHandler(); }
+  MSerialT MSerial3(true, _MSerial3);
+  extern "C" void UART3_IRQHandler() { _MSerial3.IRQHandler(); }
+#endif
+
+#if ENABLED(EMERGENCY_PARSER)
+
+  bool MarlinSerial::recv_callback(const char c) {
+    // Need to figure out which serial port we are and react in consequence (Marlin does not have CONTAINER_OF macro)
+    if (false) {}
+    #if ANY_SERIAL_IS(0)
+      else if (this == &_MSerial) emergency_parser.update(MSerial0.emergency_state, c);
+    #endif
+    #if ANY_SERIAL_IS(1)
+      else if (this == &_MSerial1) emergency_parser.update(MSerial1.emergency_state, c);
+    #endif
+    #if ANY_SERIAL_IS(2)
+      else if (this == &_MSerial2) emergency_parser.update(MSerial2.emergency_state, c);
+    #endif
+    #if ANY_SERIAL_IS(3)
+      else if (this == &_MSerial3) emergency_parser.update(MSerial3.emergency_state, c);
+    #endif
+    return true;
+  }
+
 #endif
 
 #endif // TARGET_LPC1768

Marlin/src/HAL/LPC1768/MarlinSerial.h

@@ -28,6 +28,7 @@
 #if ENABLED(EMERGENCY_PARSER)
   #include "../../feature/e_parser.h"
 #endif
+#include "../../core/serial_hook.h"
 
 #ifndef SERIAL_PORT
   #define SERIAL_PORT 0
@@ -41,27 +42,26 @@
 
 class MarlinSerial : public HardwareSerial<RX_BUFFER_SIZE, TX_BUFFER_SIZE> {
 public:
-  MarlinSerial(LPC_UART_TypeDef *UARTx) :
+  MarlinSerial(LPC_UART_TypeDef *UARTx) : HardwareSerial<RX_BUFFER_SIZE, TX_BUFFER_SIZE>(UARTx) { }
-    HardwareSerial<RX_BUFFER_SIZE, TX_BUFFER_SIZE>(UARTx)
-    #if ENABLED(EMERGENCY_PARSER)
-      , emergency_state(EmergencyParser::State::EP_RESET)
-    #endif
-    { }
 
   void end() {}
 
   #if ENABLED(EMERGENCY_PARSER)
-    bool recv_callback(const char c) override {
+    bool recv_callback(const char c) override;
-      emergency_parser.update(emergency_state, c);
-      return true; // do not discard character
-    }
-
-    EmergencyParser::State emergency_state;
-    static inline bool emergency_parser_enabled() { return true; }
   #endif
 };
 
-extern MarlinSerial MSerial;
+// On LPC176x framework, HardwareSerial does not implement the same interface as Arduino's Serial, so overloads
-extern MarlinSerial MSerial1;
+// of 'available' and 'read' method are not used in this multiple inheritance scenario.
-extern MarlinSerial MSerial2;
+// Instead, use a ForwardSerial here that adapts the interface.
-extern MarlinSerial MSerial3;
+typedef ForwardSerial1Class<MarlinSerial> MSerialT;
+extern MSerialT MSerial0;
+extern MSerialT MSerial1;
+extern MSerialT MSerial2;
+extern MSerialT MSerial3;
+
+// Consequently, we can't use a RuntimeSerial either. The workaround would be to use a RuntimeSerial<ForwardSerial<MarlinSerial>> type here
+// Right now, let's ignore this until it's actually required.
+#if ENABLED(SERIAL_RUNTIME_HOOK)
+  #error "SERIAL_RUNTIME_HOOK is not yet supported for LPC176x."
+#endif

Marlin/src/HAL/LPC1768/eeprom_flash.cpp

@@ -25,7 +25,7 @@
  * Emulate EEPROM storage using Flash Memory
  *
  * Use a single 32K flash sector to store EEPROM data. To reduce the
- * number of erase operations a simple "levelling" scheme is used that
+ * number of erase operations a simple "leveling" scheme is used that
  * maintains a number of EEPROM "slots" within the larger flash sector.
  * Each slot is used in turn and the entire sector is only erased when all
  * slots have been used.

Marlin/src/HAL/LPC1768/eeprom_sdcard.cpp

@@ -83,17 +83,16 @@ bool PersistentStore::access_finish() {
 static void debug_rw(const bool write, int &pos, const uint8_t *value, const size_t size, const FRESULT s, const size_t total=0) {
   PGM_P const rw_str = write ? PSTR("write") : PSTR("read");
   SERIAL_CHAR(' ');
-  serialprintPGM(rw_str);
+  SERIAL_ECHOPGM_P(rw_str);
-  SERIAL_ECHOLNPAIR("_data(", pos, ",", int(value), ",", int(size), ", ...)");
+  SERIAL_ECHOLNPAIR("_data(", pos, ",", value, ",", size, ", ...)");
   if (total) {
     SERIAL_ECHOPGM(" f_");
-    serialprintPGM(rw_str);
+    SERIAL_ECHOPGM_P(rw_str);
-    SERIAL_ECHOPAIR("()=", int(s), "\n size=", int(size), "\n bytes_");
+    SERIAL_ECHOPAIR("()=", s, "\n size=", size, "\n bytes_");
-    serialprintPGM(write ? PSTR("written=") : PSTR("read="));
+    SERIAL_ECHOLNPAIR_P(write ? PSTR("written=") : PSTR("read="), total);
-    SERIAL_ECHOLN(total);
   }
   else
-    SERIAL_ECHOLNPAIR(" f_lseek()=", int(s));
+    SERIAL_ECHOLNPAIR(" f_lseek()=", s);
 }
 
 // File function return codes for type FRESULT. This goes away soon, but

Marlin/src/HAL/LPC1768/inc/Conditionals_post.h

@@ -26,3 +26,9 @@
 #elif EITHER(I2C_EEPROM, SPI_EEPROM)
   #define USE_SHARED_EEPROM 1
 #endif
+
+// LPC1768 boards seem to lose steps when saving to EEPROM during print (issue #20785)
+// TODO: Which other boards are incompatible?
+#if defined(MCU_LPC1768) && PRINTCOUNTER_SAVE_INTERVAL > 0
+  #define PRINTCOUNTER_SYNC 1
+#endif

Marlin/src/HAL/LPC1768/inc/SanityCheck.h

@@ -31,7 +31,7 @@
 /**
  * Detect an old pins file by checking for old ADC pins values.
  */
-#define _OLD_TEMP_PIN(P) PIN_EXISTS(P) && _CAT(P,_PIN) <= 7 && _CAT(P,_PIN) != 2 && _CAT(P,_PIN) != 3
+#define _OLD_TEMP_PIN(P) PIN_EXISTS(P) && _CAT(P,_PIN) <= 7 && !WITHIN(_CAT(P,_PIN), TERN(LPC1768_IS_SKRV1_3, 0, 2), 3)  // Include P0_00 and P0_01 for SKR V1.3 board
 #if _OLD_TEMP_PIN(TEMP_BED)
   #error "TEMP_BED_PIN must be defined using the Pn_nn or Pn_nn_An format. (See the included pins files)."
 #elif _OLD_TEMP_PIN(TEMP_0)
@@ -92,7 +92,7 @@ static_assert(DISABLED(BAUD_RATE_GCODE), "BAUD_RATE_GCODE is not yet supported o
 #define ANY_TX(N,V...) DO(IS_TX##N,||,V)
 #define ANY_RX(N,V...) DO(IS_RX##N,||,V)
 
-#if USING_SERIAL_0
+#if ANY_SERIAL_IS(0)
   #define IS_TX0(P) (P == P0_02)
   #define IS_RX0(P) (P == P0_03)
   #if IS_TX0(TMC_SW_MISO) || IS_RX0(TMC_SW_MOSI)
@@ -106,7 +106,7 @@ static_assert(DISABLED(BAUD_RATE_GCODE), "BAUD_RATE_GCODE is not yet supported o
   #undef IS_RX0
 #endif
 
-#if USING_SERIAL_1
+#if ANY_SERIAL_IS(1)
   #define IS_TX1(P) (P == P0_15)
   #define IS_RX1(P) (P == P0_16)
   #define _IS_TX1_1 IS_TX1
@@ -116,7 +116,7 @@ static_assert(DISABLED(BAUD_RATE_GCODE), "BAUD_RATE_GCODE is not yet supported o
   #elif HAS_WIRED_LCD
     #if IS_TX1(BTN_EN2) || IS_RX1(BTN_EN1)
       #error "Serial port pins (1) conflict with Encoder Buttons!"
-    #elif ANY_TX(1, SD_SCK_PIN, LCD_PINS_D4, DOGLCD_SCK, LCD_RESET_PIN, LCD_PINS_RS, SHIFT_CLK) \
+    #elif ANY_TX(1, SD_SCK_PIN, LCD_PINS_D4, DOGLCD_SCK, LCD_RESET_PIN, LCD_PINS_RS, SHIFT_CLK_PIN) \
        || ANY_RX(1, LCD_SDSS, LCD_PINS_RS, SD_MISO_PIN, DOGLCD_A0, SD_SS_PIN, LCD_SDSS, DOGLCD_CS, LCD_RESET_PIN, LCD_BACKLIGHT_PIN)
       #error "Serial port pins (1) conflict with LCD pins!"
     #endif
@@ -127,7 +127,7 @@ static_assert(DISABLED(BAUD_RATE_GCODE), "BAUD_RATE_GCODE is not yet supported o
   #undef _IS_RX1_1
 #endif
 
-#if USING_SERIAL_2
+#if ANY_SERIAL_IS(2)
   #define IS_TX2(P) (P == P0_10)
   #define IS_RX2(P) (P == P0_11)
   #define _IS_TX2_1 IS_TX2
@@ -161,7 +161,7 @@ static_assert(DISABLED(BAUD_RATE_GCODE), "BAUD_RATE_GCODE is not yet supported o
   #undef _IS_RX2_1
 #endif
 
-#if USING_SERIAL_3
+#if ANY_SERIAL_IS(3)
   #define PIN_IS_TX3(P) (PIN_EXISTS(P) && P##_PIN == P0_00)
   #define PIN_IS_RX3(P) (P##_PIN == P0_01)
   #if PIN_IS_TX3(X_MIN) || PIN_IS_RX3(X_MAX)
@@ -270,7 +270,7 @@ static_assert(DISABLED(BAUD_RATE_GCODE), "BAUD_RATE_GCODE is not yet supported o
 #endif
 
 #if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
-  #error "SERIAL_STATS_MAX_RX_QUEUED is not supported on this platform."
+  #error "SERIAL_STATS_MAX_RX_QUEUED is not supported on LPC176x."
 #elif ENABLED(SERIAL_STATS_DROPPED_RX)
-  #error "SERIAL_STATS_DROPPED_RX is not supported on this platform."
+  #error "SERIAL_STATS_DROPPED_RX is not supported on LPX176x."
 #endif

Marlin/src/HAL/LPC1768/main.cpp

@@ -46,6 +46,8 @@ extern "C" {
 
 void SysTick_Callback() { disk_timerproc(); }
 
+TERN_(POSTMORTEM_DEBUGGING, extern void install_min_serial());
+
 void HAL_init() {
 
   // Init LEDs
@@ -119,13 +121,11 @@ void HAL_init() {
   #endif
 
   USB_Init();                               // USB Initialization
-  USB_Connect(FALSE);                       // USB clear connection
+  USB_Connect(false);                       // USB clear connection
   delay(1000);                              // Give OS time to notice
-  USB_Connect(TRUE);
+  USB_Connect(true);
 
-  #if HAS_SD_HOST_DRIVE
+  TERN_(HAS_SD_HOST_DRIVE, MSC_SD_Init(0)); // Enable USB SD card access
-    MSC_SD_Init(0);                         // Enable USB SD card access
-  #endif
 
   const millis_t usb_timeout = millis() + 2000;
   while (!USB_Configuration && PENDING(millis(), usb_timeout)) {
@@ -137,6 +137,8 @@ void HAL_init() {
   }
 
   HAL_timer_init();
+
+  TERN_(POSTMORTEM_DEBUGGING, install_min_serial()); // Install the min serial handler
 }
 
 // HAL idle task

Marlin/src/HAL/LPC1768/timers.h

@@ -152,7 +152,7 @@ FORCE_INLINE static void HAL_timer_disable_interrupt(const uint8_t timer_num) {
 
 // This function is missing from CMSIS
 FORCE_INLINE static bool NVIC_GetEnableIRQ(IRQn_Type IRQn) {
-  return (NVIC->ISER[((uint32_t)IRQn) >> 5] & (1 << ((uint32_t)IRQn) & 0x1F)) != 0;
+  return TEST(NVIC->ISER[uint32_t(IRQn) >> 5], uint32_t(IRQn) & 0x1F);
 }
 
 FORCE_INLINE static bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {

Marlin/src/HAL/LPC1768/upload_extra_script.py

@@ -8,9 +8,7 @@ from __future__ import print_function
 target_filename = "FIRMWARE.CUR"
 target_drive = "REARM"
 
-import os
+import os,getpass,platform
-import getpass
-import platform
 
 current_OS = platform.system()
 Import("env")
@@ -33,9 +31,8 @@ try:
 		#
 		# platformio.ini will accept this for a Windows upload port designation: 'upload_port = L:'
 		#   Windows - doesn't care about the disk's name, only cares about the drive letter
-		import subprocess
+		import subprocess,string
 		from ctypes import windll
-		import string
 
 		# getting list of drives
 		# https://stackoverflow.com/questions/827371/is-there-a-way-to-list-all-the-available-drive-letters-in-python

Marlin/src/HAL/LPC1768/usb_serial.cpp

@@ -29,8 +29,8 @@
 
 EmergencyParser::State emergency_state;
 
-bool CDC_RecvCallback(const char buffer) {
+bool CDC_RecvCallback(const char c) {
-  emergency_parser.update(emergency_state, buffer);
+  emergency_parser.update(emergency_state, c);
   return true;
 }
 

Marlin/src/HAL/SAMD51/HAL.cpp

@@ -24,6 +24,24 @@
 #include <Adafruit_ZeroDMA.h>
 #include <wiring_private.h>
 
+#ifdef ADAFRUIT_GRAND_CENTRAL_M4
+  #if ANY_SERIAL_IS(-1)
+    DefaultSerial1 MSerial0(false, Serial);
+  #endif
+  #if ANY_SERIAL_IS(0)
+    DefaultSerial2 MSerial1(false, Serial1);
+  #endif
+  #if ANY_SERIAL_IS(1)
+    DefaultSerial3 MSerial2(false, Serial2);
+  #endif
+  #if ANY_SERIAL_IS(2)
+    DefaultSerial4 MSerial3(false, Serial3);
+  #endif
+  #if ANY_SERIAL_IS(3)
+    DefaultSerial5 MSerial4(false, Serial4);
+  #endif
+#endif
+
 // ------------------------
 // Local defines
 // ------------------------
@@ -39,6 +57,7 @@
 #define GET_PROBE_ADC()           TERN(HAS_TEMP_PROBE,        PIN_TO_ADC(TEMP_PROBE_PIN),   -1)
 #define GET_BED_ADC()             TERN(HAS_TEMP_ADC_BED,      PIN_TO_ADC(TEMP_BED_PIN),     -1)
 #define GET_CHAMBER_ADC()         TERN(HAS_TEMP_ADC_CHAMBER,  PIN_TO_ADC(TEMP_CHAMBER_PIN), -1)
+#define GET_COOLER_ADC()          TERN(HAS_TEMP_ADC_COOLER,   PIN_TO_ADC(TEMP_COOLER_PIN),  -1)
 #define GET_FILAMENT_WIDTH_ADC()  TERN(FILAMENT_WIDTH_SENSOR, PIN_TO_ADC(FILWIDTH_PIN),     -1)
 #define GET_BUTTONS_ADC()         TERN(HAS_ADC_BUTTONS,       PIN_TO_ADC(ADC_KEYPAD_PIN),   -1)
 
@@ -48,6 +67,7 @@
   || GET_PROBE_ADC() == n          \
   || GET_BED_ADC() == n            \
   || GET_CHAMBER_ADC() == n        \
+  || GET_COOLER_ADC() == n         \
   || GET_FILAMENT_WIDTH_ADC() == n \
   || GET_BUTTONS_ADC() == n        \
 )
@@ -126,6 +146,9 @@ uint16_t HAL_adc_result;
     #if GET_CHAMBER_ADC() == 0
       TEMP_CHAMBER_PIN,
     #endif
+    #if GET_COOLER_ADC() == 0
+      TEMP_COOLER_PIN,
+    #endif
     #if GET_FILAMENT_WIDTH_ADC() == 0
       FILWIDTH_PIN,
     #endif
@@ -166,6 +189,9 @@ uint16_t HAL_adc_result;
     #if GET_CHAMBER_ADC() == 1
       TEMP_CHAMBER_PIN,
     #endif
+    #if GET_COOLER_ADC() == 1
+      TEMP_COOLER_PIN,
+    #endif
     #if GET_FILAMENT_WIDTH_ADC() == 1
       FILWIDTH_PIN,
     #endif
@@ -214,6 +240,9 @@ uint16_t HAL_adc_result;
       #if GET_CHAMBER_ADC() == 0
         { PIN_TO_INPUTCTRL(TEMP_CHAMBER_PIN) },
       #endif
+      #if GET_COOLER_ADC() == 0
+        { PIN_TO_INPUTCTRL(TEMP_COOLER_PIN) },
+      #endif
       #if GET_FILAMENT_WIDTH_ADC() == 0
         { PIN_TO_INPUTCTRL(FILWIDTH_PIN) },
       #endif
@@ -263,6 +292,9 @@ uint16_t HAL_adc_result;
       #if GET_CHAMBER_ADC() == 1
         { PIN_TO_INPUTCTRL(TEMP_CHAMBER_PIN) },
       #endif
+      #if GET_COOLER_ADC() == 1
+        { PIN_TO_INPUTCTRL(TEMP_COOLER_PIN) },
+      #endif
       #if GET_FILAMENT_WIDTH_ADC() == 1
         { PIN_TO_INPUTCTRL(FILWIDTH_PIN) },
       #endif

Marlin/src/HAL/SAMD51/HAL.h

@@ -32,34 +32,54 @@
   #include "MarlinSerial_AGCM4.h"
 
   // Serial ports
+  typedef ForwardSerial1Class< decltype(Serial) > DefaultSerial1;
+  typedef ForwardSerial1Class< decltype(Serial1) > DefaultSerial2;
+  typedef ForwardSerial1Class< decltype(Serial2) > DefaultSerial3;
+  typedef ForwardSerial1Class< decltype(Serial3) > DefaultSerial4;
+  typedef ForwardSerial1Class< decltype(Serial4) > DefaultSerial5;
+  extern DefaultSerial1 MSerial0;
+  extern DefaultSerial2 MSerial1;
+  extern DefaultSerial3 MSerial2;
+  extern DefaultSerial4 MSerial3;
+  extern DefaultSerial5 MSerial4;
 
-  // MYSERIAL0 required before MarlinSerial includes!
+  // MYSERIAL1 required before MarlinSerial includes!
 
-  #define __MSERIAL(X) Serial##X
+  #define __MSERIAL(X) MSerial##X
   #define _MSERIAL(X) __MSERIAL(X)
   #define MSERIAL(X) _MSERIAL(INCREMENT(X))
 
   #if SERIAL_PORT == -1
-    #define MYSERIAL0 Serial
+    #define MYSERIAL1 MSerial0
   #elif WITHIN(SERIAL_PORT, 0, 3)
-    #define MYSERIAL0 MSERIAL(SERIAL_PORT)
+    #define MYSERIAL1 MSERIAL(SERIAL_PORT)
   #else
     #error "SERIAL_PORT must be from -1 to 3. Please update your configuration."
   #endif
 
   #ifdef SERIAL_PORT_2
     #if SERIAL_PORT_2 == -1
-      #define MYSERIAL1 Serial
+      #define MYSERIAL2 MSerial0
     #elif WITHIN(SERIAL_PORT_2, 0, 3)
-      #define MYSERIAL1 MSERIAL(SERIAL_PORT_2)
+      #define MYSERIAL2 MSERIAL(SERIAL_PORT_2)
     #else
       #error "SERIAL_PORT_2 must be from -1 to 3. Please update your configuration."
     #endif
   #endif
 
+  #ifdef MMU2_SERIAL_PORT
+    #if MMU2_SERIAL_PORT == -1
+      #define MMU2_SERIAL MSerial0
+    #elif WITHIN(MMU2_SERIAL_PORT, 0, 3)
+      #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
+    #else
+      #error "MMU2_SERIAL_PORT must be from -1 to 3. Please update your configuration."
+    #endif
+  #endif
+
   #ifdef LCD_SERIAL_PORT
     #if LCD_SERIAL_PORT == -1
-      #define LCD_SERIAL Serial
+      #define LCD_SERIAL MSerial0
     #elif WITHIN(LCD_SERIAL_PORT, 0, 3)
       #define LCD_SERIAL MSERIAL(LCD_SERIAL_PORT)
     #else

Marlin/src/HAL/SAMD51/MarlinSerial_AGCM4.cpp

@@ -21,30 +21,30 @@
 #ifdef ADAFRUIT_GRAND_CENTRAL_M4
 
 /**
- * Framework doesn't define some serial to save sercom resources
+ * Framework doesn't define some serials to save sercom resources
  * hence if these are used I need to define them
  */
 
 #include "../../inc/MarlinConfig.h"
 
-#if SERIAL_PORT == 1 || SERIAL_PORT_2 == 1
+#if ANY_SERIAL_IS(1)
-  Uart Serial2(&sercom4, PIN_SERIAL2_RX, PIN_SERIAL2_TX, PAD_SERIAL2_RX, PAD_SERIAL2_TX);
+  UartT Serial2(false, &sercom4, PIN_SERIAL2_RX, PIN_SERIAL2_TX, PAD_SERIAL2_RX, PAD_SERIAL2_TX);
   void SERCOM4_0_Handler() { Serial2.IrqHandler(); }
   void SERCOM4_1_Handler() { Serial2.IrqHandler(); }
   void SERCOM4_2_Handler() { Serial2.IrqHandler(); }
   void SERCOM4_3_Handler() { Serial2.IrqHandler(); }
 #endif
 
-#if SERIAL_PORT == 2 || SERIAL_PORT_2 == 2
+#if ANY_SERIAL_IS(2)
-  Uart Serial3(&sercom1, PIN_SERIAL3_RX, PIN_SERIAL3_TX, PAD_SERIAL3_RX, PAD_SERIAL3_TX);
+  UartT Serial3(false, &sercom1, PIN_SERIAL3_RX, PIN_SERIAL3_TX, PAD_SERIAL3_RX, PAD_SERIAL3_TX);
   void SERCOM1_0_Handler() { Serial3.IrqHandler(); }
   void SERCOM1_1_Handler() { Serial3.IrqHandler(); }
   void SERCOM1_2_Handler() { Serial3.IrqHandler(); }
   void SERCOM1_3_Handler() { Serial3.IrqHandler(); }
 #endif
 
-#if SERIAL_PORT == 3 || SERIAL_PORT_2 == 3
+#if ANY_SERIAL_IS(3)
-  Uart Serial4(&sercom5, PIN_SERIAL4_RX, PIN_SERIAL4_TX, PAD_SERIAL4_RX, PAD_SERIAL4_TX);
+  UartT Serial4(false, &sercom5, PIN_SERIAL4_RX, PIN_SERIAL4_TX, PAD_SERIAL4_RX, PAD_SERIAL4_TX);
   void SERCOM5_0_Handler() { Serial4.IrqHandler(); }
   void SERCOM5_1_Handler() { Serial4.IrqHandler(); }
   void SERCOM5_2_Handler() { Serial4.IrqHandler(); }

Marlin/src/HAL/SAMD51/MarlinSerial_AGCM4.h

@@ -20,6 +20,10 @@
  */
 #pragma once
 
-extern Uart Serial2;
+#include "../../core/serial_hook.h"
-extern Uart Serial3;
+
-extern Uart Serial4;
+typedef Serial1Class<Uart> UartT;
+
+extern UartT Serial2;
+extern UartT Serial3;
+extern UartT Serial4;

Marlin/src/HAL/SAMD51/fastio.h

@@ -31,7 +31,7 @@
  */
 
 #ifndef MASK
-  #define MASK(PIN) (1 << PIN)
+  #define MASK(PIN) _BV(PIN)
 #endif
 
 /**

Marlin/src/HAL/SAMD51/inc/SanityCheck.h

@@ -50,3 +50,7 @@
 #if ENABLED(FAST_PWM_FAN) || SPINDLE_LASER_FREQUENCY
   #error "Features requiring Hardware PWM (FAST_PWM_FAN, SPINDLE_LASER_FREQUENCY) are not yet supported on SAMD51."
 #endif
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+  #error "POSTMORTEM_DEBUGGING is not yet supported on AGCM4."
+#endif

Marlin/src/HAL/SAMD51/timers.cpp

@@ -157,7 +157,7 @@ void HAL_timer_disable_interrupt(const uint8_t timer_num) {
 
 // missing from CMSIS: Check if interrupt is enabled or not
 static bool NVIC_GetEnabledIRQ(IRQn_Type IRQn) {
-  return (NVIC->ISER[(uint32_t)(IRQn) >> 5] & (1 << ((uint32_t)(IRQn) & 0x1F))) != 0;
+  return TEST(NVIC->ISER[uint32_t(IRQn) >> 5], uint32_t(IRQn) & 0x1F);
 }
 
 bool HAL_timer_interrupt_enabled(const uint8_t timer_num) {

Marlin/src/HAL/STM32/HAL.cpp

@@ -28,6 +28,10 @@
 #include "../../inc/MarlinConfig.h"
 #include "../shared/Delay.h"
 
+#ifdef USBCON
+  DefaultSerial1 MSerial0(false, SerialUSB);
+#endif
+
 #if ENABLED(SRAM_EEPROM_EMULATION)
   #if STM32F7xx
     #include <stm32f7xx_ll_pwr.h>
@@ -38,6 +42,11 @@
   #endif
 #endif
 
+#if HAS_SD_HOST_DRIVE
+  #include "msc_sd.h"
+  #include "usbd_cdc_if.h"
+#endif
+
 // ------------------------
 // Public Variables
 // ------------------------
@@ -48,21 +57,18 @@ uint16_t HAL_adc_result;
 // Public functions
 // ------------------------
 
-// Needed for DELAY_NS() / DELAY_US() on CORTEX-M7
+TERN_(POSTMORTEM_DEBUGGING, extern void install_min_serial());
-#if (defined(__arm__) || defined(__thumb__)) && __CORTEX_M == 7
-  // HAL pre-initialization task
-  // Force the preinit function to run between the premain() and main() function
-  // of the STM32 arduino core
-  __attribute__((constructor (102)))
-  void HAL_preinit() {
-    enableCycleCounter();
-  }
-#endif
 
 // HAL initialization task
 void HAL_init() {
   FastIO_init();
 
+  // Ensure F_CPU is a constant expression.
+  // If the compiler breaks here, it means that delay code that should compute at compile time will not work.
+  // So better safe than sorry here.
+  constexpr int cpuFreq = F_CPU;
+  UNUSED(cpuFreq);
+
   #if ENABLED(SDSUPPORT) && DISABLED(SDIO_SUPPORT) && (defined(SDSS) && SDSS != -1)
     OUT_WRITE(SDSS, HIGH); // Try to set SDSS inactive before any other SPI users start up
   #endif
@@ -84,6 +90,21 @@ void HAL_init() {
   #if ENABLED(EMERGENCY_PARSER) && USBD_USE_CDC
     USB_Hook_init();
   #endif
+
+  TERN_(POSTMORTEM_DEBUGGING, install_min_serial()); // Install the min serial handler
+
+  #if HAS_SD_HOST_DRIVE
+    MSC_SD_init();                         // Enable USB SD card access
+  #endif
+}
+
+// HAL idle task
+void HAL_idletask() {
+  #if HAS_SHARED_MEDIA
+    // Stm32duino currently doesn't have a "loop/idle" method
+    CDC_resume_receive();
+    CDC_continue_transmit();
+  #endif
 }
 
 void HAL_clear_reset_source() { __HAL_RCC_CLEAR_RESET_FLAGS(); }

Marlin/src/HAL/STM32/HAL.h

@@ -39,6 +39,9 @@
 
 #ifdef USBCON
   #include <USBSerial.h>
+  #include "../../core/serial_hook.h"
+  typedef ForwardSerial1Class< decltype(SerialUSB) > DefaultSerial1;
+  extern DefaultSerial1 MSerial0;
 #endif
 
 // ------------------------
@@ -48,26 +51,36 @@
 #define MSERIAL(X) _MSERIAL(X)
 
 #if SERIAL_PORT == -1
-  #define MYSERIAL0 SerialUSB
+  #define MYSERIAL1 MSerial0
 #elif WITHIN(SERIAL_PORT, 1, 6)
-  #define MYSERIAL0 MSERIAL(SERIAL_PORT)
+  #define MYSERIAL1 MSERIAL(SERIAL_PORT)
 #else
   #error "SERIAL_PORT must be -1 or from 1 to 6. Please update your configuration."
 #endif
 
 #ifdef SERIAL_PORT_2
   #if SERIAL_PORT_2 == -1
-    #define MYSERIAL1 SerialUSB
+    #define MYSERIAL2 MSerial0
   #elif WITHIN(SERIAL_PORT_2, 1, 6)
-    #define MYSERIAL1 MSERIAL(SERIAL_PORT_2)
+    #define MYSERIAL2 MSERIAL(SERIAL_PORT_2)
   #else
     #error "SERIAL_PORT_2 must be -1 or from 1 to 6. Please update your configuration."
   #endif
 #endif
 
+#ifdef MMU2_SERIAL_PORT
+  #if MMU2_SERIAL_PORT == -1
+    #define MMU2_SERIAL MSerial0
+  #elif WITHIN(MMU2_SERIAL_PORT, 1, 6)
+    #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
+  #else
+    #error "MMU2_SERIAL_PORT must be -1 or from 1 to 6. Please update your configuration."
+  #endif
+#endif
+
 #ifdef LCD_SERIAL_PORT
   #if LCD_SERIAL_PORT == -1
-    #define LCD_SERIAL SerialUSB
+    #define LCD_SERIAL MSerial0
   #elif WITHIN(LCD_SERIAL_PORT, 1, 6)
     #define LCD_SERIAL MSERIAL(LCD_SERIAL_PORT)
   #else
@@ -96,14 +109,6 @@
 // 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) (*(addr))
-
 // ------------------------
 // Types
 // ------------------------
@@ -130,6 +135,8 @@ extern uint16_t HAL_adc_result;
 
 // Enable hooks into  setup for HAL
 void HAL_init();
+#define HAL_IDLETASK 1
+void HAL_idletask();
 
 // Clear reset reason
 void HAL_clear_reset_source();
@@ -187,6 +194,7 @@ void flashFirmware(const int16_t);
 typedef void (*systickCallback_t)(void);
 void systick_attach_callback(systickCallback_t cb);
 void HAL_SYSTICK_Callback();
+
 extern volatile uint32_t systick_uptime_millis;
 
 #define HAL_CAN_SET_PWM_FREQ   // This HAL supports PWM Frequency adjustment

Marlin/src/HAL/STM32/HAL_MinSerial.cpp

@@ -0,0 +1,152 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (c) 2017 Victor Perez
+ *
+ * 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/>.
+ *
+ */
+#if defined(ARDUINO_ARCH_STM32) && !defined(STM32GENERIC)
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+
+#include "../shared/HAL_MinSerial.h"
+#include "watchdog.h"
+
+/* Instruction Synchronization Barrier */
+#define isb() __asm__ __volatile__ ("isb" : : : "memory")
+
+/* Data Synchronization Barrier */
+#define dsb() __asm__ __volatile__ ("dsb" : : : "memory")
+
+// Dumb mapping over the registers of a USART device on STM32
+struct USARTMin {
+  volatile uint32_t SR;
+  volatile uint32_t DR;
+  volatile uint32_t BRR;
+  volatile uint32_t CR1;
+  volatile uint32_t CR2;
+};
+
+#if WITHIN(SERIAL_PORT, 1, 6)
+  // Depending on the CPU, the serial port is different for USART1
+  static const uintptr_t regsAddr[] = {
+    TERN(STM32F1xx, 0x40013800, 0x40011000), // USART1
+    0x40004400, // USART2
+    0x40004800, // USART3
+    0x40004C00, // UART4_BASE
+    0x40005000, // UART5_BASE
+    0x40011400  // USART6
+  };
+  static USARTMin * regs = (USARTMin*)regsAddr[SERIAL_PORT - 1];
+#endif
+
+static void TXBegin() {
+  #if !WITHIN(SERIAL_PORT, 1, 6)
+    #warning "Using POSTMORTEM_DEBUGGING requires a physical U(S)ART hardware in case of severe error."
+    #warning "Disabling the severe error reporting feature currently because the used serial port is not a HW port."
+  #else
+    // This is common between STM32F1/STM32F2 and STM32F4
+    const int nvicUART[] = { /* NVIC_USART1 */ 37, /* NVIC_USART2 */ 38, /* NVIC_USART3 */ 39, /* NVIC_UART4 */ 52, /* NVIC_UART5 */ 53, /* NVIC_USART6 */ 71 };
+    int nvicIndex = nvicUART[SERIAL_PORT - 1];
+
+    struct NVICMin {
+      volatile uint32_t ISER[32];
+      volatile uint32_t ICER[32];
+    };
+
+    NVICMin * nvicBase = (NVICMin*)0xE000E100;
+    nvicBase->ICER[nvicIndex / 32] |= _BV32(nvicIndex % 32);
+
+    // We NEED memory barriers to ensure Interrupts are actually disabled!
+    // ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
+    dsb();
+    isb();
+
+    // Example for USART1 disable:  (RCC->APB2ENR &= ~(RCC_APB2ENR_USART1EN))
+    // Too difficult to reimplement here, let's query the STM32duino macro here
+    #if SERIAL_PORT == 1
+      __HAL_RCC_USART1_CLK_DISABLE();
+      __HAL_RCC_USART1_CLK_ENABLE();
+    #elif SERIAL_PORT == 2
+      __HAL_RCC_USART2_CLK_DISABLE();
+      __HAL_RCC_USART2_CLK_ENABLE();
+    #elif SERIAL_PORT == 3
+      __HAL_RCC_USART3_CLK_DISABLE();
+      __HAL_RCC_USART3_CLK_ENABLE();
+    #elif SERIAL_PORT == 4
+      __HAL_RCC_UART4_CLK_DISABLE(); // BEWARE: UART4 and not USART4 here
+      __HAL_RCC_UART4_CLK_ENABLE();
+    #elif SERIAL_PORT == 5
+      __HAL_RCC_UART5_CLK_DISABLE(); // BEWARE: UART5 and not USART5 here
+      __HAL_RCC_UART5_CLK_ENABLE();
+    #elif SERIAL_PORT == 6
+      __HAL_RCC_USART6_CLK_DISABLE();
+      __HAL_RCC_USART6_CLK_ENABLE();
+    #endif
+
+    uint32_t brr = regs->BRR;
+    regs->CR1 = 0; // Reset the USART
+    regs->CR2 = 0; // 1 stop bit
+
+    // If we don't touch the BRR (baudrate register), we don't need to recompute.
+    regs->BRR = brr;
+
+    regs->CR1 = _BV(3) | _BV(13); // 8 bits, no parity, 1 stop bit (TE | UE)
+  #endif
+}
+
+// A SW memory barrier, to ensure GCC does not overoptimize loops
+#define sw_barrier() __asm__ volatile("": : :"memory");
+static void TX(char c) {
+  #if WITHIN(SERIAL_PORT, 1, 6)
+    constexpr uint32_t usart_sr_txe = _BV(7);
+    while (!(regs->SR & usart_sr_txe)) {
+      TERN_(USE_WATCHDOG, HAL_watchdog_refresh());
+      sw_barrier();
+    }
+    regs->DR = c;
+  #else
+    // Let's hope a mystical guru will fix this, one day by writting interrupt-free USB CDC ACM code (or, at least, by polling the registers since interrupt will be queued but will never trigger)
+    // For now, it's completely lost to oblivion.
+  #endif
+}
+
+void install_min_serial() {
+  HAL_min_serial_init = &TXBegin;
+  HAL_min_serial_out = &TX;
+}
+
+#if DISABLED(DYNAMIC_VECTORTABLE) && DISABLED(STM32F0xx) // Cortex M0 can't jump to a symbol that's too far from the current function, so we work around this in exception_arm.cpp
+extern "C" {
+  __attribute__((naked)) void JumpHandler_ASM() {
+    __asm__ __volatile__ (
+      "b CommonHandler_ASM\n"
+    );
+  }
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) HardFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) BusFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) UsageFault_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) MemManage_Handler();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) NMI_Handler();
+}
+#endif
+
+#endif // POSTMORTEM_DEBUGGING
+#endif // ARDUINO_ARCH_STM32

Marlin/src/HAL/STM32/HAL_SPI.cpp

@@ -51,18 +51,28 @@ static SPISettings spiConfig;
     OUT_WRITE(SD_MOSI_PIN, HIGH);
   }
 
-  static uint16_t delay_STM32_soft_spi;
+  // Use function with compile-time value so we can actually reach the desired frequency
+  // Need to adjust this a little bit: on a 72MHz clock, we have 14ns/clock
+  // and we'll use ~3 cycles to jump to the method and going back, so it'll take ~40ns from the given clock here
+  #define CALLING_COST_NS  (3U * 1000000000U) / (F_CPU)
+  void (*delaySPIFunc)();
+  void delaySPI_125()  { DELAY_NS(125 - CALLING_COST_NS); }
+  void delaySPI_250()  { DELAY_NS(250 - CALLING_COST_NS); }
+  void delaySPI_500()  { DELAY_NS(500 - CALLING_COST_NS); }
+  void delaySPI_1000() { DELAY_NS(1000 - CALLING_COST_NS); }
+  void delaySPI_2000() { DELAY_NS(2000 - CALLING_COST_NS); }
+  void delaySPI_4000() { DELAY_NS(4000 - CALLING_COST_NS); }
 
   void spiInit(uint8_t spiRate) {
     // Use datarates Marlin uses
     switch (spiRate) {
-      case SPI_FULL_SPEED:   delay_STM32_soft_spi =  125; break;  // desired: 8,000,000  actual: ~1.1M
+      case SPI_FULL_SPEED:   delaySPIFunc =  &delaySPI_125; break;  // desired: 8,000,000  actual: ~1.1M
-      case SPI_HALF_SPEED:   delay_STM32_soft_spi =  125; break;  // desired: 4,000,000  actual: ~1.1M
+      case SPI_HALF_SPEED:   delaySPIFunc =  &delaySPI_125; break;  // desired: 4,000,000  actual: ~1.1M
-      case SPI_QUARTER_SPEED:delay_STM32_soft_spi =  250; break;  // desired: 2,000,000  actual: ~890K
+      case SPI_QUARTER_SPEED:delaySPIFunc =  &delaySPI_250; break;  // desired: 2,000,000  actual: ~890K
-      case SPI_EIGHTH_SPEED: delay_STM32_soft_spi =  500; break;  // desired: 1,000,000  actual: ~590K
+      case SPI_EIGHTH_SPEED: delaySPIFunc =  &delaySPI_500; break;  // desired: 1,000,000  actual: ~590K
-      case SPI_SPEED_5:      delay_STM32_soft_spi = 1000; break;  // desired:   500,000  actual: ~360K
+      case SPI_SPEED_5:      delaySPIFunc = &delaySPI_1000; break;  // desired:   500,000  actual: ~360K
-      case SPI_SPEED_6:      delay_STM32_soft_spi = 2000; break;  // desired:   250,000  actual: ~210K
+      case SPI_SPEED_6:      delaySPIFunc = &delaySPI_2000; break;  // desired:   250,000  actual: ~210K
-      default:               delay_STM32_soft_spi = 4000; break;  // desired:   125,000  actual: ~123K
+      default:               delaySPIFunc = &delaySPI_4000; break;  // desired:   125,000  actual: ~123K
     }
     SPI.begin();
   }
@@ -75,9 +85,9 @@ static SPISettings spiConfig;
       WRITE(SD_SCK_PIN, LOW);
       WRITE(SD_MOSI_PIN, b & 0x80);
 
-      DELAY_NS(delay_STM32_soft_spi);
+      delaySPIFunc();
       WRITE(SD_SCK_PIN, HIGH);
-      DELAY_NS(delay_STM32_soft_spi);
+      delaySPIFunc();
 
       b <<= 1;        // little setup time
       b |= (READ(SD_MISO_PIN) != 0);

Marlin/src/HAL/STM32/MarlinSerial.cpp

@@ -35,7 +35,7 @@
 
 #define DECLARE_SERIAL_PORT(ser_num) \
   void _rx_complete_irq_ ## ser_num (serial_t * obj); \
-  MarlinSerial MSerial ## ser_num (USART ## ser_num, &_rx_complete_irq_ ## ser_num); \
+  MSerialT MSerial ## ser_num (true, USART ## ser_num, &_rx_complete_irq_ ## ser_num); \
   void _rx_complete_irq_ ## ser_num (serial_t * obj) { MSerial ## ser_num ._rx_complete_irq(obj); }
 
 #define DECLARE_SERIAL_PORT_EXP(ser_num) DECLARE_SERIAL_PORT(ser_num)
@@ -48,6 +48,10 @@
   DECLARE_SERIAL_PORT_EXP(SERIAL_PORT_2)
 #endif
 
+#if defined(MMU2_SERIAL_PORT) && MMU2_SERIAL_PORT >= 0
+  DECLARE_SERIAL_PORT_EXP(MMU2_SERIAL_PORT)
+#endif
+
 #if defined(LCD_SERIAL_PORT) && LCD_SERIAL_PORT >= 0
   DECLARE_SERIAL_PORT_EXP(LCD_SERIAL_PORT)
 #endif
@@ -77,7 +81,7 @@ void MarlinSerial::_rx_complete_irq(serial_t *obj) {
     }
 
     #if ENABLED(EMERGENCY_PARSER)
-      emergency_parser.update(emergency_state, c);
+      emergency_parser.update(static_cast<MSerialT*>(this)->emergency_state, c);
     #endif
   }
 }

Marlin/src/HAL/STM32/MarlinSerial.h

@@ -24,21 +24,15 @@
   #include "../../feature/e_parser.h"
 #endif
 
+#include "../../core/serial_hook.h"
+
 typedef void (*usart_rx_callback_t)(serial_t * obj);
 
-class MarlinSerial : public HardwareSerial {
+struct MarlinSerial : public HardwareSerial {
-public:
   MarlinSerial(void* peripheral, usart_rx_callback_t rx_callback) :
       HardwareSerial(peripheral), _rx_callback(rx_callback)
-      #if ENABLED(EMERGENCY_PARSER)
-        , emergency_state(EmergencyParser::State::EP_RESET)
-      #endif
   { }
 
-  #if ENABLED(EMERGENCY_PARSER)
-    static inline bool emergency_parser_enabled() { return true; }
-  #endif
-
   void begin(unsigned long baud, uint8_t config);
   inline void begin(unsigned long baud) { begin(baud, SERIAL_8N1); }
 
@@ -46,19 +40,17 @@ public:
 
 protected:
   usart_rx_callback_t _rx_callback;
-  #if ENABLED(EMERGENCY_PARSER)
-    EmergencyParser::State emergency_state;
-  #endif
 };
 
-extern MarlinSerial MSerial1;
+typedef Serial1Class<MarlinSerial> MSerialT;
-extern MarlinSerial MSerial2;
+extern MSerialT MSerial1;
-extern MarlinSerial MSerial3;
+extern MSerialT MSerial2;
-extern MarlinSerial MSerial4;
+extern MSerialT MSerial3;
-extern MarlinSerial MSerial5;
+extern MSerialT MSerial4;
-extern MarlinSerial MSerial6;
+extern MSerialT MSerial5;
-extern MarlinSerial MSerial7;
+extern MSerialT MSerial6;
-extern MarlinSerial MSerial8;
+extern MSerialT MSerial7;
-extern MarlinSerial MSerial9;
+extern MSerialT MSerial8;
-extern MarlinSerial MSerial10;
+extern MSerialT MSerial9;
-extern MarlinSerial MSerialLP1;
+extern MSerialT MSerial10;
+extern MSerialT MSerialLP1;

Marlin/src/HAL/STM32/Sd2Card_sdio_stm32duino.cpp

@@ -163,7 +163,6 @@
     GPIO_InitStruct.Pin = GPIO_PIN_2;
     HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
 
-
     #if DISABLED(STM32F1xx)
       // TODO: use __HAL_RCC_SDIO_RELEASE_RESET() and __HAL_RCC_SDIO_CLK_ENABLE();
       RCC->APB2RSTR &= ~RCC_APB2RSTR_SDIORST_Msk;  // take SDIO out of reset

Marlin/src/HAL/STM32/eeprom_flash.cpp

@@ -48,7 +48,7 @@
   #include "stm32_def.h"
 
   #define DEBUG_OUT ENABLED(EEPROM_CHITCHAT)
-  #include "src/core/debug_out.h"
+  #include "../../core/debug_out.h"
 
   #ifndef MARLIN_EEPROM_SIZE
     #define MARLIN_EEPROM_SIZE    0x1000 // 4KB
@@ -61,7 +61,9 @@
     #define FLASH_UNIT_SIZE       0x20000 // 128kB
   #endif
 
-  #define FLASH_ADDRESS_START     (FLASH_END - ((FLASH_SECTOR_TOTAL - (FLASH_SECTOR)) * (FLASH_UNIT_SIZE)) + 1)
+  #ifndef FLASH_ADDRESS_START
+    #define FLASH_ADDRESS_START   (FLASH_END - ((FLASH_SECTOR_TOTAL - (FLASH_SECTOR)) * (FLASH_UNIT_SIZE)) + 1)
+  #endif
   #define FLASH_ADDRESS_END       (FLASH_ADDRESS_START + FLASH_UNIT_SIZE  - 1)
 
   #define EEPROM_SLOTS            ((FLASH_UNIT_SIZE) / (MARLIN_EEPROM_SIZE))

Marlin/src/HAL/STM32/fastio.h

@@ -59,7 +59,7 @@ void FastIO_init(); // Must be called before using fast io macros
 #endif
 
 #define _READ(IO)               bool(READ_BIT(FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->IDR, _BV32(STM_PIN(digitalPinToPinName(IO)))))
-#define _TOGGLE(IO)             (FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->ODR ^= _BV32(STM_PIN(digitalPinToPinName(IO))))
+#define _TOGGLE(IO)             TBI32(FastIOPortMap[STM_PORT(digitalPinToPinName(IO))]->ODR, STM_PIN(digitalPinToPinName(IO)))
 
 #define _GET_MODE(IO)
 #define _SET_MODE(IO,M)         pinMode(IO, M)

Marlin/src/HAL/STM32/inc/Conditionals_adv.h

@@ -21,6 +21,12 @@
  */
 #pragma once
 
-#if defined(USBD_USE_CDC_COMPOSITE) && DISABLED(NO_SD_HOST_DRIVE)
+#if defined(USBD_USE_CDC_MSC) && DISABLED(NO_SD_HOST_DRIVE)
   #define HAS_SD_HOST_DRIVE 1
 #endif
+
+// Fix F_CPU not being a compile-time constant in STSTM32 framework
+#ifdef BOARD_F_CPU
+  #undef F_CPU
+  #define F_CPU BOARD_F_CPU
+#endif

Marlin/src/HAL/STM32/inc/SanityCheck.h

@@ -47,9 +47,9 @@
 #endif
 
 #if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
-  #error "SERIAL_STATS_MAX_RX_QUEUED is not supported on this platform."
+  #error "SERIAL_STATS_MAX_RX_QUEUED is not supported on STM32."
 #elif ENABLED(SERIAL_STATS_DROPPED_RX)
-  #error "SERIAL_STATS_DROPPED_RX is not supported on this platform."
+  #error "SERIAL_STATS_DROPPED_RX is not supported on STM32."
 #endif
 
 #if ANY(TFT_COLOR_UI, TFT_LVGL_UI, TFT_CLASSIC_UI) && NOT_TARGET(STM32F4xx, STM32F1xx)

Marlin/src/HAL/STM32/msc_sd.cpp

@@ -0,0 +1,112 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 BigTreeTech [https://github.com/bigtreetech]
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#include "../../inc/MarlinConfigPre.h"
+
+#if defined(ARDUINO_ARCH_STM32) && !defined(STM32GENERIC) && HAS_SD_HOST_DRIVE
+
+#include "msc_sd.h"
+#include "../shared/Marduino.h"
+#include "usbd_core.h"
+#include <USB.h>
+#include <USBMscHandler.h>
+
+#define BLOCK_SIZE 512
+#define PRODUCT_ID 0x29
+
+#include "../../sd/cardreader.h"
+
+class Sd2CardUSBMscHandler : public USBMscHandler {
+public:
+  bool GetCapacity(uint32_t *pBlockNum, uint16_t *pBlockSize) {
+    *pBlockNum = card.getSd2Card().cardSize();
+    *pBlockSize = BLOCK_SIZE;
+    return true;
+  }
+
+  bool Write(uint8_t *pBuf, uint32_t blkAddr, uint16_t blkLen) {
+    auto sd2card = card.getSd2Card();
+    // single block
+    if (blkLen == 1) {
+      watchdog_refresh();
+      sd2card.writeBlock(blkAddr, pBuf);
+      return true;
+    }
+
+    // multi block optmization
+    sd2card.writeStart(blkAddr, blkLen);
+    while (blkLen--) {
+      watchdog_refresh();
+      sd2card.writeData(pBuf);
+      pBuf += BLOCK_SIZE;
+    }
+    sd2card.writeStop();
+    return true;
+  }
+
+  bool Read(uint8_t *pBuf, uint32_t blkAddr, uint16_t blkLen) {
+    auto sd2card = card.getSd2Card();
+    // single block
+    if (blkLen == 1) {
+      watchdog_refresh();
+      sd2card.readBlock(blkAddr, pBuf);
+      return true;
+    }
+
+    // multi block optmization
+    sd2card.readStart(blkAddr);
+    while (blkLen--) {
+      watchdog_refresh();
+      sd2card.readData(pBuf);
+      pBuf += BLOCK_SIZE;
+    }
+    sd2card.readStop();
+    return true;
+  }
+
+  bool IsReady() {
+    return card.isMounted();
+  }
+};
+
+Sd2CardUSBMscHandler usbMscHandler;
+
+/* USB Mass storage Standard Inquiry Data */
+uint8_t  Marlin_STORAGE_Inquirydata[] = { /* 36 */
+  /* LUN 0 */
+  0x00,
+  0x80,
+  0x02,
+  0x02,
+  (STANDARD_INQUIRY_DATA_LEN - 5),
+  0x00,
+  0x00,
+  0x00,
+  'M', 'A', 'R', 'L', 'I', 'N', ' ', ' ', /* Manufacturer : 8 bytes */
+  'P', 'r', 'o', 'd', 'u', 'c', 't', ' ', /* Product      : 16 Bytes */
+  ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',
+  '0', '.', '0', '1',                     /* Version      : 4 Bytes */
+};
+
+USBMscHandler *pSingleMscHandler = &usbMscHandler;
+
+void MSC_SD_init() {
+  USBDevice.end();
+  delay(200);
+  USBDevice.begin();
+  USBDevice.registerMscHandlers(1, &pSingleMscHandler, Marlin_STORAGE_Inquirydata);
+}
+
+#endif // __STM32F1__ && HAS_SD_HOST_DRIVE

Marlin/src/HAL/STM32/msc_sd.h

@@ -0,0 +1,18 @@
+/**
+ * Marlin 3D Printer Firmware
+ *
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 BigTreeTech [https://github.com/bigtreetech]
+ *
+ * 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.
+ *
+ * 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
+
+void MSC_SD_init();

Marlin/src/HAL/STM32/tft/tft_fsmc.h

@@ -84,7 +84,6 @@ class TFT_FSMC {
     }
 };
 
-
 #ifdef STM32F1xx
   #define FSMC_PIN_DATA   STM_PIN_DATA(STM_MODE_AF_PP, GPIO_NOPULL, AFIO_NONE)
 #elif defined(STM32F4xx)

Marlin/src/HAL/STM32/tft/tft_spi.cpp

@@ -207,12 +207,12 @@ void TFT_SPI::Transmit(uint16_t Data) {
   while ((SPIx.Instance->SR & SPI_FLAG_BSY) == SPI_FLAG_BSY) {}
 
   if (TFT_MISO_PIN != TFT_MOSI_PIN)
-    __HAL_SPI_CLEAR_OVRFLAG(&SPIx);   /* Clear overrun flag in 2 Lines communication mode because received is not read */
+    __HAL_SPI_CLEAR_OVRFLAG(&SPIx);   // Clear overrun flag in 2 Lines communication mode because received is not read
 }
 
 void TFT_SPI::TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Count) {
   // Wait last dma finish, to start another
-  while(isBusy()) { }
+  while (isBusy()) { /* nada */ }
 
   DMAtx.Init.MemInc = MemoryIncrease;
   HAL_DMA_Init(&DMAtx);
@@ -225,7 +225,7 @@ void TFT_SPI::TransmitDMA(uint32_t MemoryIncrease, uint16_t *Data, uint16_t Coun
   HAL_DMA_Start(&DMAtx, (uint32_t)Data, (uint32_t)&(SPIx.Instance->DR), Count);
   __HAL_SPI_ENABLE(&SPIx);
 
-  SET_BIT(SPIx.Instance->CR2, SPI_CR2_TXDMAEN);   /* Enable Tx DMA Request */
+  SET_BIT(SPIx.Instance->CR2, SPI_CR2_TXDMAEN);   // Enable Tx DMA Request
 
   HAL_DMA_PollForTransfer(&DMAtx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
   Abort();

Marlin/src/HAL/STM32F1/HAL.cpp

@@ -84,6 +84,32 @@
 
 #if defined(SERIAL_USB) && !HAS_SD_HOST_DRIVE
   USBSerial SerialUSB;
+  DefaultSerial1 MSerial0(true, SerialUSB);
+
+  #if ENABLED(EMERGENCY_PARSER)
+    #include "../libmaple/usb/stm32f1/usb_reg_map.h"
+    #include "libmaple/usb_cdcacm.h"
+    // The original callback is not called (no way to retrieve address).
+    // That callback detects a special STM32 reset sequence: this functionality is not essential
+    // as M997 achieves the same.
+    void my_rx_callback(unsigned int, void*) {
+      // max length of 16 is enough to contain all emergency commands
+      uint8 buf[16];
+
+      //rx is usbSerialPart.endpoints[2]
+      uint16 len = usb_get_ep_rx_count(USB_CDCACM_RX_ENDP);
+      uint32 total = usb_cdcacm_data_available();
+
+      if (len == 0 || total == 0 || !WITHIN(total, len, COUNT(buf)))
+        return;
+
+      // cannot get character by character due to bug in composite_cdcacm_peek_ex
+      len = usb_cdcacm_peek(buf, total);
+
+      for (uint32 i = 0; i < len; i++)
+        emergency_parser.update(MSerial0.emergency_state, buf[i + total - len]);
+    }
+  #endif
 #endif
 
 uint16_t HAL_adc_result;
@@ -106,6 +132,9 @@ const uint8_t adc_pins[] = {
   #if HAS_TEMP_CHAMBER
     TEMP_CHAMBER_PIN,
   #endif
+  #if HAS_TEMP_COOLER
+    TEMP_COOLER_PIN,
+  #endif
   #if HAS_TEMP_ADC_1
     TEMP_1_PIN,
   #endif
@@ -163,6 +192,9 @@ enum TempPinIndex : char {
   #if HAS_TEMP_CHAMBER
     TEMP_CHAMBER,
   #endif
+  #if HAS_TEMP_COOLER
+    TEMP_COOLER_PIN,
+  #endif
   #if HAS_TEMP_ADC_1
     TEMP_1,
   #endif
@@ -246,6 +278,8 @@ static void NVIC_SetPriorityGrouping(uint32_t PriorityGroup) {
   } }
 #endif
 
+TERN_(POSTMORTEM_DEBUGGING, extern void install_min_serial());
+
 void HAL_init() {
   NVIC_SetPriorityGrouping(0x3);
   #if PIN_EXISTS(LED)
@@ -253,12 +287,15 @@ void HAL_init() {
   #endif
   #if HAS_SD_HOST_DRIVE
     MSC_SD_init();
+  #elif BOTH(SERIAL_USB, EMERGENCY_PARSER)
+    usb_cdcacm_set_hooks(USB_CDCACM_HOOK_RX, my_rx_callback);
   #endif
   #if PIN_EXISTS(USB_CONNECT)
     OUT_WRITE(USB_CONNECT_PIN, !USB_CONNECT_INVERTING);  // USB clear connection
     delay(1000);                                         // Give OS time to notice
     OUT_WRITE(USB_CONNECT_PIN, USB_CONNECT_INVERTING);
   #endif
+  TERN_(POSTMORTEM_DEBUGGING, install_min_serial());    // Install the minimal serial handler
 }
 
 // HAL idle task
@@ -354,6 +391,9 @@ void HAL_adc_start_conversion(const uint8_t adc_pin) {
     #if HAS_TEMP_CHAMBER
       case TEMP_CHAMBER_PIN: pin_index = TEMP_CHAMBER; break;
     #endif
+    #if HAS_TEMP_COOLER
+      case TEMP_COOLER_PIN: pin_index = TEMP_COOLER; break;
+    #endif
     #if HAS_TEMP_ADC_1
       case TEMP_1_PIN: pin_index = TEMP_1; break;
     #endif

Marlin/src/HAL/STM32F1/HAL.h

@@ -61,8 +61,11 @@
 #endif
 
 #ifdef SERIAL_USB
+  typedef ForwardSerial1Class< USBSerial > DefaultSerial1;
+  extern DefaultSerial1 MSerial0;
+
   #if !HAS_SD_HOST_DRIVE
-    #define UsbSerial Serial
+    #define UsbSerial MSerial0
   #else
     #define UsbSerial MarlinCompositeSerial
   #endif
@@ -78,9 +81,9 @@
 #endif
 
 #if SERIAL_PORT == -1
-  #define MYSERIAL0 UsbSerial
+  #define MYSERIAL1 UsbSerial
 #elif WITHIN(SERIAL_PORT, 1, NUM_UARTS)
-  #define MYSERIAL0 MSERIAL(SERIAL_PORT)
+  #define MYSERIAL1 MSERIAL(SERIAL_PORT)
 #elif NUM_UARTS == 5
   #error "SERIAL_PORT must be -1 or from 1 to 5. Please update your configuration."
 #else
@@ -89,9 +92,9 @@
 
 #ifdef SERIAL_PORT_2
   #if SERIAL_PORT_2 == -1
-    #define MYSERIAL1 UsbSerial
+    #define MYSERIAL2 UsbSerial
   #elif WITHIN(SERIAL_PORT_2, 1, NUM_UARTS)
-    #define MYSERIAL1 MSERIAL(SERIAL_PORT_2)
+    #define MYSERIAL2 MSERIAL(SERIAL_PORT_2)
   #elif NUM_UARTS == 5
     #error "SERIAL_PORT_2 must be -1 or from 1 to 5. Please update your configuration."
   #else
@@ -99,6 +102,18 @@
   #endif
 #endif
 
+#ifdef MMU2_SERIAL_PORT
+  #if MMU2_SERIAL_PORT == -1
+    #define MMU2_SERIAL UsbSerial
+  #elif WITHIN(MMU2_SERIAL_PORT, 1, NUM_UARTS)
+    #define MMU2_SERIAL MSERIAL(MMU2_SERIAL_PORT)
+  #elif NUM_UARTS == 5
+    #error "MMU2_SERIAL_PORT must be -1 or from 1 to 5. Please update your configuration."
+  #else
+    #error "MMU2_SERIAL_PORT must be -1 or from 1 to 3. Please update your configuration."
+  #endif
+#endif
+
 #ifdef LCD_SERIAL_PORT
   #if LCD_SERIAL_PORT == -1
     #define LCD_SERIAL UsbSerial
@@ -109,8 +124,9 @@
   #else
     #error "LCD_SERIAL_PORT must be -1 or from 1 to 3. Please update your configuration."
   #endif
-
+  #if HAS_DGUS_LCD
-  #define SERIAL_GET_TX_BUFFER_FREE() LCD_SERIAL.availableForWrite()
+    #define SERIAL_GET_TX_BUFFER_FREE() LCD_SERIAL.availableForWrite()
+  #endif
 #endif
 
 // Set interrupt grouping for this MCU
@@ -139,14 +155,6 @@ void HAL_idletask();
 // 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) (*(addr))
-
 #define RST_POWER_ON   1
 #define RST_EXTERNAL   2
 #define RST_BROWN_OUT  4

Marlin/src/HAL/STM32F1/HAL_MinSerial.cpp

@@ -0,0 +1,118 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (c) 2017 Victor Perez
+ *
+ * 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 __STM32F1__
+
+#include "../../inc/MarlinConfigPre.h"
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+
+#include "../shared/HAL_MinSerial.h"
+#include "watchdog.h"
+
+#include <libmaple/usart.h>
+#include <libmaple/rcc.h>
+#include <libmaple/nvic.h>
+
+/* Instruction Synchronization Barrier */
+#define isb() __asm__ __volatile__ ("isb" : : : "memory")
+
+/* Data Synchronization Barrier */
+#define dsb() __asm__ __volatile__ ("dsb" : : : "memory")
+
+static void TXBegin() {
+  #if !WITHIN(SERIAL_PORT, 1, 6)
+    #warning "Using POSTMORTEM_DEBUGGING requires a physical U(S)ART hardware in case of severe error."
+    #warning "Disabling the severe error reporting feature currently because the used serial port is not a HW port."
+  #else
+    // We use MYSERIAL1 here, so we need to figure out how to get the linked register
+    struct usart_dev* dev = MYSERIAL1.c_dev();
+
+    // Or use this if removing libmaple
+    // int irq = dev->irq_num;
+    // int nvicUART[] = { NVIC_USART1 /* = 37 */, NVIC_USART2 /* = 38 */, NVIC_USART3 /* = 39 */, NVIC_UART4 /* = 52 */, NVIC_UART5 /* = 53 */ };
+    // Disabling irq means setting the bit in the NVIC ICER register located at
+    // Disable UART interrupt in NVIC
+    nvic_irq_disable(dev->irq_num);
+
+    // Use this if removing libmaple
+    //NVIC_BASE->ICER[1] |= _BV(irq - 32);
+
+    // We NEED memory barriers to ensure Interrupts are actually disabled!
+    // ( https://dzone.com/articles/nvic-disabling-interrupts-on-arm-cortex-m-and-the )
+    dsb();
+    isb();
+
+    rcc_clk_disable(dev->clk_id);
+    rcc_clk_enable(dev->clk_id);
+
+    usart_reg_map *regs = dev->regs;
+    regs->CR1 = 0; // Reset the USART
+    regs->CR2 = 0; // 1 stop bit
+
+    // If we don't touch the BRR (baudrate register), we don't need to recompute. Else we would need to call
+    usart_set_baud_rate(dev, 0, BAUDRATE);
+
+    regs->CR1 = (USART_CR1_TE | USART_CR1_UE); // 8 bits, no parity, 1 stop bit
+  #endif
+}
+
+// A SW memory barrier, to ensure GCC does not overoptimize loops
+#define sw_barrier() __asm__ volatile("": : :"memory");
+static void TX(char c) {
+  #if WITHIN(SERIAL_PORT, 1, 6)
+    struct usart_dev* dev = MYSERIAL1.c_dev();
+    while (!(dev->regs->SR & USART_SR_TXE)) {
+      TERN_(USE_WATCHDOG, HAL_watchdog_refresh());
+      sw_barrier();
+    }
+    dev->regs->DR = c;
+  #endif
+}
+
+void install_min_serial() {
+  HAL_min_serial_init = &TXBegin;
+  HAL_min_serial_out = &TX;
+}
+
+#if DISABLED(DYNAMIC_VECTORTABLE) && DISABLED(STM32F0xx) // Cortex M0 can't branch to a symbol that's too far, so we have a specific hack for them
+extern "C" {
+  __attribute__((naked)) void JumpHandler_ASM() {
+    __asm__ __volatile__ (
+      "b CommonHandler_ASM\n"
+    );
+  }
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __exc_hardfault();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __exc_busfault();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __exc_usagefault();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __exc_memmanage();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __exc_nmi();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __stm32reservedexception7();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __stm32reservedexception8();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __stm32reservedexception9();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __stm32reservedexception10();
+  void __attribute__((naked, alias("JumpHandler_ASM"), nothrow)) __stm32reservedexception13();
+}
+#endif
+
+#endif // POSTMORTEM_DEBUGGING
+#endif // __STM32F1__

Marlin/src/HAL/STM32F1/MarlinSerial.cpp

@@ -28,7 +28,7 @@
 
 // Copied from ~/.platformio/packages/framework-arduinoststm32-maple/STM32F1/system/libmaple/usart_private.h
 // Changed to handle Emergency Parser
-static inline __always_inline void my_usart_irq(ring_buffer *rb, ring_buffer *wb, usart_reg_map *regs, MarlinSerial &serial) {
+static inline __always_inline void my_usart_irq(ring_buffer *rb, ring_buffer *wb, usart_reg_map *regs, MSerialT &serial) {
  /* Handle RXNEIE and TXEIE interrupts.
   * RXNE signifies availability of a byte in DR.
   *
@@ -90,20 +90,20 @@ constexpr bool serial_handles_emergency(int port) {
   ;
 }
 
-#define DEFINE_HWSERIAL_MARLIN(name, n)   \
+#define DEFINE_HWSERIAL_MARLIN(name, n)     \
-  MarlinSerial name(USART##n,             \
+  MSerialT name(serial_handles_emergency(n),\
-            BOARD_USART##n##_TX_PIN,      \
+            USART##n,                       \
-            BOARD_USART##n##_RX_PIN,      \
+            BOARD_USART##n##_TX_PIN,        \
-            serial_handles_emergency(n)); \
+            BOARD_USART##n##_RX_PIN);       \
-  extern "C" void __irq_usart##n(void) {  \
+  extern "C" void __irq_usart##n(void) {    \
     my_usart_irq(USART##n->rb, USART##n->wb, USART##n##_BASE, MSerial##n); \
   }
 
 #define DEFINE_HWSERIAL_UART_MARLIN(name, n) \
-  MarlinSerial name(UART##n,                 \
+  MSerialT name(serial_handles_emergency(n), \
+          UART##n,                           \
           BOARD_USART##n##_TX_PIN,           \
-          BOARD_USART##n##_RX_PIN,           \
+          BOARD_USART##n##_RX_PIN);          \
-          serial_handles_emergency(n));      \
   extern "C" void __irq_usart##n(void) {     \
     my_usart_irq(UART##n->rb, UART##n->wb, UART##n##_BASE, MSerial##n); \
   }
@@ -134,12 +134,12 @@ constexpr bool IsSerialClassAllowed(const HardwareSerial&) { return false; }
 // If you encounter this error, replace SerialX with MSerialX, for example MSerial3.
 
 // Non-TMC ports were already validated in HAL.h, so do not require verbose error messages.
-#ifdef MYSERIAL0
-  CHECK_CFG_SERIAL(MYSERIAL0);
-#endif
 #ifdef MYSERIAL1
   CHECK_CFG_SERIAL(MYSERIAL1);
 #endif
+#ifdef MYSERIAL2
+  CHECK_CFG_SERIAL(MYSERIAL2);
+#endif
 #ifdef LCD_SERIAL
   CHECK_CFG_SERIAL(LCD_SERIAL);
 #endif

Marlin/src/HAL/STM32F1/MarlinSerial.h

@@ -26,28 +26,13 @@
 #include <WString.h>
 
 #include "../../inc/MarlinConfigPre.h"
-#if ENABLED(EMERGENCY_PARSER)
+#include "../../core/serial_hook.h"
-  #include "../../feature/e_parser.h"
-#endif
 
 // Increase priority of serial interrupts, to reduce overflow errors
 #define UART_IRQ_PRIO 1
 
-class MarlinSerial : public HardwareSerial {
+struct MarlinSerial : public HardwareSerial {
-public:
+  MarlinSerial(struct usart_dev *usart_device, uint8 tx_pin, uint8 rx_pin) : HardwareSerial(usart_device, tx_pin, rx_pin) { }
-  #if ENABLED(EMERGENCY_PARSER)
-    const bool ep_enabled;
-    EmergencyParser::State emergency_state;
-    inline bool emergency_parser_enabled() { return ep_enabled; }
-  #endif
-
-  MarlinSerial(struct usart_dev *usart_device, uint8 tx_pin, uint8 rx_pin, bool TERN_(EMERGENCY_PARSER, ep_capable)) :
-    HardwareSerial(usart_device, tx_pin, rx_pin)
-    #if ENABLED(EMERGENCY_PARSER)
-      , ep_enabled(ep_capable)
-      , emergency_state(EmergencyParser::State::EP_RESET)
-    #endif
-    { }
 
   #ifdef UART_IRQ_PRIO
     // Shadow the parent methods to set IRQ priority after begin()
@@ -62,10 +47,12 @@ public:
   #endif
 };
 
-extern MarlinSerial MSerial1;
+typedef Serial1Class<MarlinSerial> MSerialT;
-extern MarlinSerial MSerial2;
+
-extern MarlinSerial MSerial3;
+extern MSerialT MSerial1;
+extern MSerialT MSerial2;
+extern MSerialT MSerial3;
 #if EITHER(STM32_HIGH_DENSITY, STM32_XL_DENSITY)
-  extern MarlinSerial MSerial4;
+  extern MSerialT MSerial4;
-  extern MarlinSerial MSerial5;
+  extern MSerialT MSerial5;
 #endif

Marlin/src/HAL/STM32F1/Servo.cpp

@@ -45,7 +45,7 @@ uint8_t ServoCount = 0;
  *
  * This uses the smallest prescaler that allows an overflow < 2^16.
  */
-#define MAX_OVERFLOW    UINT16_MAX //((1 << 16) - 1)
+#define MAX_OVERFLOW    UINT16_MAX // _BV(16) - 1
 #define CYC_MSEC        (1000 * CYCLES_PER_MICROSECOND)
 #define TAU_MSEC        20
 #define TAU_USEC        (TAU_MSEC * 1000)

Marlin/src/HAL/STM32F1/eeprom_if_iic.cpp

@@ -40,7 +40,7 @@ void eeprom_init() { BL24CXX::init(); }
 // Public functions
 // ------------------------
 
-void eeprom_write_byte(uint8_t *pos, unsigned char value) {
+void eeprom_write_byte(uint8_t *pos, uint8_t value) {
   const unsigned eeprom_address = (unsigned)pos;
   return BL24CXX::writeOneByte(eeprom_address, value);
 }

Marlin/src/HAL/STM32F1/eeprom_wired.cpp

@@ -1,6 +1,5 @@
 /**
  * Marlin 3D Printer Firmware
- *
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * This program is free software: you can redistribute it and/or modify

Marlin/src/HAL/STM32F1/fastio.h

@@ -29,9 +29,9 @@
 
 #include <libmaple/gpio.h>
 
-#define READ(IO)                (PIN_MAP[IO].gpio_device->regs->IDR & (1U << PIN_MAP[IO].gpio_bit) ? HIGH : LOW)
+#define READ(IO)                (PIN_MAP[IO].gpio_device->regs->IDR & _BV32(PIN_MAP[IO].gpio_bit) ? HIGH : LOW)
-#define WRITE(IO,V)             (PIN_MAP[IO].gpio_device->regs->BSRR = (1U << PIN_MAP[IO].gpio_bit) << ((V) ? 0 : 16))
+#define WRITE(IO,V)             (PIN_MAP[IO].gpio_device->regs->BSRR = _BV32(PIN_MAP[IO].gpio_bit) << ((V) ? 0 : 16))
-#define TOGGLE(IO)              (PIN_MAP[IO].gpio_device->regs->ODR = PIN_MAP[IO].gpio_device->regs->ODR ^ (1U << PIN_MAP[IO].gpio_bit))
+#define TOGGLE(IO)              TBI32(PIN_MAP[IO].gpio_device->regs->ODR, PIN_MAP[IO].gpio_bit)
 
 #define _GET_MODE(IO)           gpio_get_mode(PIN_MAP[IO].gpio_device, PIN_MAP[IO].gpio_bit)
 #define _SET_MODE(IO,M)         gpio_set_mode(PIN_MAP[IO].gpio_device, PIN_MAP[IO].gpio_bit, M)

Marlin/src/HAL/STM32F1/inc/SanityCheck.h

@@ -34,9 +34,9 @@
 #endif
 
 #if ENABLED(SERIAL_STATS_MAX_RX_QUEUED)
-  #error "SERIAL_STATS_MAX_RX_QUEUED is not supported on this platform."
+  #error "SERIAL_STATS_MAX_RX_QUEUED is not supported on the STM32F1 platform."
 #elif ENABLED(SERIAL_STATS_DROPPED_RX)
-  #error "SERIAL_STATS_DROPPED_RX is not supported on this platform."
+  #error "SERIAL_STATS_DROPPED_RX is not supported on the STM32F1 platform."
 #endif
 
 #if ENABLED(NEOPIXEL_LED)

Marlin/src/HAL/STM32F1/msc_sd.cpp

@@ -19,11 +19,12 @@
 
 #include "msc_sd.h"
 #include "SPI.h"
+#include "usb_reg_map.h"
 
 #define PRODUCT_ID 0x29
 
 USBMassStorage MarlinMSC;
-MarlinUSBCompositeSerial MarlinCompositeSerial;
+Serial1Class<USBCompositeSerial> MarlinCompositeSerial(true);
 
 #include "../../inc/MarlinConfig.h"
 
@@ -41,14 +42,28 @@ MarlinUSBCompositeSerial MarlinCompositeSerial;
 #endif
 
 #if ENABLED(EMERGENCY_PARSER)
-  void (*real_rx_callback)(void);
 
-  void my_rx_callback(void) {
+  // The original callback is not called (no way to retrieve address).
-    real_rx_callback();
+  // That callback detects a special STM32 reset sequence: this functionality is not essential
-    int len = MarlinCompositeSerial.available();
+  // as M997 achieves the same.
-    while (len-- > 0) // >0 because available() may return a negative value
+  void my_rx_callback(unsigned int, void*) {
-      emergency_parser.update(MarlinCompositeSerial.emergency_state, MarlinCompositeSerial.peek());
+    // max length of 16 is enough to contain all emergency commands
+    uint8 buf[16];
+
+    //rx is usbSerialPart.endpoints[2]
+    uint16 len = usb_get_ep_rx_count(usbSerialPart.endpoints[2].address);
+    uint32 total = composite_cdcacm_data_available();
+
+    if (len == 0 || total == 0 || !WITHIN(total, len, COUNT(buf)))
+      return;
+
+    // cannot get character by character due to bug in composite_cdcacm_peek_ex
+    len = composite_cdcacm_peek(buf, total);
+
+    for (uint32 i = 0; i < len; i++)
+      emergency_parser.update(MarlinCompositeSerial.emergency_state, buf[i+total-len]);
   }
+
 #endif
 
 void MSC_SD_init() {
@@ -73,9 +88,7 @@ void MSC_SD_init() {
   MarlinCompositeSerial.registerComponent();
   USBComposite.begin();
   #if ENABLED(EMERGENCY_PARSER)
-    //rx is usbSerialPart.endpoints[2]
+    composite_cdcacm_set_hooks(USBHID_CDCACM_HOOK_RX, my_rx_callback);
-    real_rx_callback = usbSerialPart.endpoints[2].callback;
-    usbSerialPart.endpoints[2].callback = my_rx_callback;
   #endif
 }
 

Marlin/src/HAL/STM32F1/msc_sd.h

@@ -18,25 +18,9 @@
 #include <USBComposite.h>
 
 #include "../../inc/MarlinConfigPre.h"
-#if ENABLED(EMERGENCY_PARSER)
+#include "../../core/serial_hook.h"
-  #include "../../feature/e_parser.h"
-#endif
-
-class MarlinUSBCompositeSerial : public USBCompositeSerial {
-public:
-  MarlinUSBCompositeSerial() : USBCompositeSerial()
-    #if ENABLED(EMERGENCY_PARSER)
-      , emergency_state(EmergencyParser::State::EP_RESET)
-    #endif
-    { }
-
-  #if ENABLED(EMERGENCY_PARSER)
-    EmergencyParser::State emergency_state;
-    inline bool emergency_parser_enabled() { return true; }
-  #endif
-};
 
 extern USBMassStorage MarlinMSC;
-extern MarlinUSBCompositeSerial MarlinCompositeSerial;
+extern Serial1Class<USBCompositeSerial> MarlinCompositeSerial;
 
 void MSC_SD_init();

Marlin/src/HAL/TEENSY31_32/HAL.cpp

@@ -31,6 +31,13 @@
 
 #include <Wire.h>
 
+#define _IMPLEMENT_SERIAL(X) DefaultSerial##X MSerial##X(false, Serial##X)
+#define IMPLEMENT_SERIAL(X)  _IMPLEMENT_SERIAL(X)
+#if WITHIN(SERIAL_PORT, 0, 3)
+  IMPLEMENT_SERIAL(SERIAL_PORT);
+#endif
+USBSerialType USBSerial(false, SerialUSB);
+
 uint16_t HAL_adc_result;
 
 static const uint8_t pin2sc1a[] = {

Marlin/src/HAL/TEENSY31_32/HAL.h

@@ -50,14 +50,25 @@
   #define IS_TEENSY32 1
 #endif
 
-#define _MSERIAL(X) Serial##X
+#include "../../core/serial_hook.h"
-#define MSERIAL(X) _MSERIAL(X)
+
 #define Serial0 Serial
+#define _DECLARE_SERIAL(X) \
+  typedef ForwardSerial1Class<decltype(Serial##X)> DefaultSerial##X; \
+  extern DefaultSerial##X MSerial##X
+#define DECLARE_SERIAL(X) _DECLARE_SERIAL(X)
+
+typedef ForwardSerial1Class<decltype(SerialUSB)> USBSerialType;
+extern USBSerialType USBSerial;
+
+#define _MSERIAL(X) MSerial##X
+#define MSERIAL(X) _MSERIAL(X)
 
 #if SERIAL_PORT == -1
-  #define MYSERIAL0 SerialUSB
+  #define MYSERIAL1 USBSerial
 #elif WITHIN(SERIAL_PORT, 0, 3)
-  #define MYSERIAL0 MSERIAL(SERIAL_PORT)
+  DECLARE_SERIAL(SERIAL_PORT);
+  #define MYSERIAL1 MSERIAL(SERIAL_PORT)
 #endif
 
 #define HAL_SERVO_LIB libServo
@@ -74,17 +85,6 @@ typedef int8_t pin_t;
 #define ENABLE_ISRS()  __enable_irq()
 #define DISABLE_ISRS() __disable_irq()
 
-#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)))
-// Add type-checking to pgm_read_word
-#undef pgm_read_word
-#define pgm_read_word(addr) (*((uint16_t*)(addr)))
-
 inline void HAL_init() {}
 
 // Clear the reset reason

Marlin/src/HAL/TEENSY31_32/fastio.h

@@ -28,7 +28,7 @@
  */
 
 #ifndef MASK
-  #define MASK(PIN) (1 << PIN)
+  #define MASK(PIN) _BV(PIN)
 #endif
 
 #define GPIO_BITBAND_ADDR(reg, bit) (((uint32_t)&(reg) - 0x40000000) * 32 + (bit) * 4 + 0x42000000)

Marlin/src/HAL/TEENSY31_32/inc/SanityCheck.h

@@ -34,5 +34,9 @@
 #endif
 
 #if HAS_TMC_SW_SERIAL
-  #error "TMC220x Software Serial is not supported on this platform."
+  #error "TMC220x Software Serial is not supported on Teensy 3.1/3.2."
+#endif
+
+#if ENABLED(POSTMORTEM_DEBUGGING)
+  #error "POSTMORTEM_DEBUGGING is not yet supported on Teensy 3.1/3.2."
 #endif

Marlin/src/HAL/TEENSY35_36/HAL.cpp

@@ -31,6 +31,14 @@
 
 #include <Wire.h>
 
+#define _IMPLEMENT_SERIAL(X) DefaultSerial##X MSerial##X(false, Serial##X)
+#define IMPLEMENT_SERIAL(X)  _IMPLEMENT_SERIAL(X)
+#if WITHIN(SERIAL_PORT, 0, 3)
+  IMPLEMENT_SERIAL(SERIAL_PORT);
+#endif
+
+USBSerialType USBSerial(false, SerialUSB);
+
 uint16_t HAL_adc_result, HAL_adc_select;
 
 static const uint8_t pin2sc1a[] = {