📝 Update HAL documentation, README

Marlin/src/pins/samd/pins_MINITRONICS20.h

@@ -22,7 +22,9 @@
 #pragma once
 
 /**
- * ReprapWorld's Minitronics v2.0
+ * ReprapWorld Minitronics v2.0
+ * https://reprap.org/wiki/Minitronics_20
+ * 48MHz Atmel SAMD21J18 ARM Cortex-M0+
  */
 
 #if NOT_TARGET(__SAMD21__)
@@ -125,6 +127,11 @@
 
 #endif
 
+// Verify that drivers match the hardware
+#if (HAS_X_AXIS && !AXIS_DRIVER_TYPE_X(DRV8825)) || (HAS_Y_AXIS && !AXIS_DRIVER_TYPE_Y(DRV8825)) || (HAS_Z_AXIS && !AXIS_DRIVER_TYPE_Z(DRV8825)) || (HAS_EXTRUDER && !AXIS_DRIVER_TYPE_E0(DRV8825))
+  #error "Minitronics v2.0 has hard-wired DRV8825 drivers. Comment out this line to continue."
+#endif
+
 //
 // Extruder / Bed
 //

README.md

@@ -57,19 +57,24 @@ Every new HAL opens up a world of hardware. At this time we need HALs for RP2040
   [Teensy++ 2.0](//www.microchip.com/en-us/product/AT90USB1286)|AT90USB1286|Printrboard
   [Arduino Due](//www.arduino.cc/en/Guide/ArduinoDue)|SAM3X8E|RAMPS-FD, RADDS, RAMPS4DUE
   [ESP32](//github.com/espressif/arduino-esp32)|ESP32|FYSETC E4, E4d@BOX, MRR
+  [HC32](//www.huazhoucn.com/)|HC32|Ender-2 Pro, Voxelab Aquila
   [LPC1768](//www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc1700-cortex-m3/512-kb-flash-64-kb-sram-ethernet-usb-lqfp100-package:LPC1768FBD100)|ARM® Cortex-M3|MKS SBASE, Re-ARM, Selena Compact
   [LPC1769](//www.nxp.com/products/processors-and-microcontrollers/arm-microcontrollers/general-purpose-mcus/lpc1700-cortex-m3/512-kb-flash-64-kb-sram-ethernet-usb-lqfp100-package:LPC1769FBD100)|ARM® Cortex-M3|Smoothieboard, Azteeg X5 mini, TH3D EZBoard
   [STM32F103](//www.st.com/en/microcontrollers-microprocessors/stm32f103.html)|ARM® Cortex-M3|Malyan M200, GTM32 Pro, MKS Robin, BTT SKR Mini
   [STM32F401](//www.st.com/en/microcontrollers-microprocessors/stm32f401.html)|ARM® Cortex-M4|ARMED, Rumba32, SKR Pro, Lerdge, FYSETC S6, Artillery Ruby
+  [Pico RP2040](//www.raspberrypi.com/documentation/microcontrollers/pico-series.html)|Dual Cortex M0+|BigTreeTech SKR Pico
   [STM32F7x6](//www.st.com/en/microcontrollers-microprocessors/stm32f7x6.html)|ARM® Cortex-M7|The Borg, RemRam V1
   [STM32G0B1RET6](//www.st.com/en/microcontrollers-microprocessors/stm32g0x1.html)|ARM® Cortex-M0+|BigTreeTech SKR mini E3 V3.0
   [STM32H743xIT6](//www.st.com/en/microcontrollers-microprocessors/stm32h743-753.html)|ARM® Cortex-M7|BigTreeTech SKR V3.0, SKR EZ V3.0, SKR SE BX V2.0/V3.0
+  [SAMD21P20A](//www.adafruit.com/product/4064)|ARM® Cortex-M0+|Adafruit Grand Central M4
   [SAMD51P20A](//www.adafruit.com/product/4064)|ARM® Cortex-M4|Adafruit Grand Central M4
-  [Teensy 3.5](//www.pjrc.com/store/teensy35.html)|ARM® Cortex-M4|
-  [Teensy 3.6](//www.pjrc.com/store/teensy36.html)|ARM® Cortex-M4|
-  [Teensy 4.0](//www.pjrc.com/store/teensy40.html)|ARM® Cortex-M7|
-  [Teensy 4.1](//www.pjrc.com/store/teensy41.html)|ARM® Cortex-M7|
-  Linux Native|x86/ARM/etc.|Raspberry Pi
+  [Teensy 3.2/3.1](//www.pjrc.com/teensy/teensy31.html)|MK20DX256VLH7 ARM® Cortex-M4|
+  [Teensy 3.5](//www.pjrc.com/store/teensy35.html)|MK64FX512-VMD12 ARM® Cortex-M4|
+  [Teensy 3.6](//www.pjrc.com/store/teensy36.html)|MK66FX1MB-VMD18 ARM® Cortex-M4|
+  [Teensy 4.0](//www.pjrc.com/store/teensy40.html)|MIMXRT1062-DVL6B ARM® Cortex-M7|
+  [Teensy 4.1](//www.pjrc.com/store/teensy41.html)|MIMXRT1062-DVJ6B ARM® Cortex-M7|
+  Linux Native|x86 / ARM / RISC-V|Raspberry Pi GPIO
+  Simulator|Windows, macOS, Linux|Desktop OS
   [All supported boards](//marlinfw.org/docs/hardware/boards.html#boards-list)|All platforms|All boards
 
 ## Marlin Support

ini/samd21.ini

@@ -10,7 +10,7 @@
 #################################
 
 #
-# Adafruit Grand Central M4 (Atmel SAMD51P20A ARM Cortex-M4)
+# ReprapWorld Minitronics (Atmel SAMD21J18 ARM Cortex-M0+)
 #
 [env:SAMD21_minitronics20]
 platform         = atmelsam