Add Michi MCU Converter support (#19163)

data/mappings/defaults.hjson

@@ -35,6 +35,11 @@
             "bootloader": "rp2040",
             "board": "QMK_PM2040"
         },
+        "michi": {
+            "processor": "RP2040",
+            "bootloader": "rp2040",
+            "board": "QMK_PM2040"
+        },
         "bit_c_pro": {
             "processor": "RP2040",
             "bootloader": "rp2040",

data/schemas/keyboard.jsonschema

@@ -34,7 +34,7 @@
         },
         "development_board": {
             "type": "string",
-            "enum": ["promicro", "elite_c", "elite_pi", "proton_c", "kb2040", "promicro_rp2040", "blok", "bit_c_pro", "stemcell", "bluepill", "blackpill_f401", "blackpill_f411", "bonsai_c4"]
+            "enum": ["promicro", "elite_c", "elite_pi", "proton_c", "kb2040", "promicro_rp2040", "blok", "michi", "bit_c_pro", "stemcell", "bluepill", "blackpill_f401", "blackpill_f411", "bonsai_c4"]
         },
         "pin_compatible": {
             "type": "string",

docs/feature_converters.md

@@ -18,6 +18,7 @@ Currently the following converters are available:
 | `promicro` | `stemcell`        |
 | `promicro` | `bonsai_c4`       |
 | `promicro` | `elite_pi`        |
+| `promicro` | `michi`           |
 | `elite_c`  | `stemcell`        |
 | `elite_c`  | `elite_pi`        |
 
@@ -81,6 +82,7 @@ If a board currently supported in QMK uses a [Pro Micro](https://www.sparkfun.co
 | [STeMCell](https://github.com/megamind4089/STeMCell)                                     | `stemcell`        |
 | [customMK Bonsai C4](https://shop.custommk.com/products/bonsai-c4-microcontroller-board) | `bonsai_c4`       |
 | [Elite-Pi](https://keeb.io/products/elite-pi-usb-c-pro-micro-replacement-rp2040)         | `elite_pi`        |
+| [Michi](https://github.com/ci-bus/michi-promicro-rp2040)                                 | `michi`           |
 
 Converter summary:
 
@@ -94,6 +96,7 @@ Converter summary:
 | `stemcell`        | `-e CONVERT_TO=stemcell`        | `CONVERT_TO=stemcell`        | `#ifdef CONVERT_TO_STEMCELL`        |
 | `bonsai_c4`       | `-e CONVERT_TO=bonsai_c4`       | `CONVERT_TO=bonsai_c4`       | `#ifdef CONVERT_TO_BONSAI_C4`       |
 | `elite_pi`        | `-e CONVERT_TO=elite_pi`        | `CONVERT_TO=elite_pi`        | `#ifdef CONVERT_TO_ELITE_PI`        |
+| `michi`           | `-e CONVERT_TO=michi`           | `CONVERT_TO=michi`           | `#ifdef CONVERT_TO_MICHI`           |
 
 ### Proton C :id=proton_c
 
@@ -124,7 +127,7 @@ The following defaults are based on what has been implemented for [RP2040](platf
 | USB Host (e.g. USB-USB converter)            | Not supported (USB host code is AVR specific and is not currently supported on ARM)                              |
 | [Split keyboards](feature_split_keyboard.md) | Partial via `PIO` vendor driver - heavily dependent on enabled features                                          |
 
-### SparkFun Pro Micro - RP2040, Blok, Bit-C PRO, and Elite-Pi :id=promicro_rp2040 
+### SparkFun Pro Micro - RP2040, Blok, Bit-C PRO, Elite-Pi and Michi :id=promicro_rp2040 
 
 Currently identical to [Adafruit KB2040](#kb2040).
 

docs/squeezing_avr.md

@@ -193,6 +193,7 @@ That said, there are a number of Pro Micro replacements with ARM controllers:
 * [SparkFun Pro Micro - RP2040](https://www.sparkfun.com/products/18288)
 * [Blok](https://boardsource.xyz/store/628b95b494dfa308a6581622)
 * [Elite-Pi](https://keeb.io/products/elite-pi-usb-c-pro-micro-replacement-rp2040)
+* [Michi](https://github.com/ci-bus/michi-promicro-rp2040)
 
 There are other, non-Pro Micro compatible boards out there. The most popular being:
 * [WeAct Blackpill F411](https://www.aliexpress.com/item/1005001456186625.html) (~$6 USD)

platforms/chibios/converters/promicro_to_michi/_pin_defs.h

@@ -0,0 +1,36 @@
+// Copyright 2022 QMK
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+// Left side (front)
+#define D3 0U
+#define D2 1U
+//      GND
+//      GND
+#define D1 2U
+#define D0 3U
+#define D4 13U
+#define C6 4U
+#define D7 9U
+#define E6 10U
+#define B4 11U
+#define B5 12U
+
+// Right side (front)
+//      RAW
+//      GND
+//      RESET
+//      VCC
+#define F4 29U
+#define F5 28U
+#define F6 27U
+#define F7 26U
+#define B1 20U
+#define B3 19U
+#define B2 18U
+#define B6 17U
+
+// LEDs (Mapped to unused pins to avoid collisions)
+#define D5 14U
+#define B0 15U

platforms/chibios/converters/promicro_to_michi/converter.mk

@@ -0,0 +1,9 @@
+# Michi MCU settings for converting AVR projects
+MCU := RP2040
+BOARD := QMK_PM2040
+BOOTLOADER := rp2040
+
+# These are defaults based on what has been implemented for RP2040 boards
+SERIAL_DRIVER ?= vendor
+WS2812_DRIVER ?= vendor
+BACKLIGHT_DRIVER ?= software