Add Bit-C PRO converter (#17827)

5 files changed, 62 insertions, 2 deletions

diff --git a/data/mappings/defaults.json b/data/mappings/defaults.json
index b62e5450b3..5e25405c37 100644
--- a/data/mappings/defaults.json
+++ b/data/mappings/defaults.json
@@ -34,6 +34,12 @@
             "board": "QMK_PM2040",
             "pin_compatible": "promicro"
         },
+        "bit_c_pro": {
+            "processor": "RP2040",
+            "bootloader": "rp2040",
+            "board": "QMK_PM2040",
+            "pin_compatible": "promicro"
+        },
         "bluepill": {
             "processor": "STM32F103",
             "bootloader": "stm32duino",
diff --git a/data/schemas/keyboard.jsonschema b/data/schemas/keyboard.jsonschema
index 14f84c5595..c55d66e6bb 100644
--- a/data/schemas/keyboard.jsonschema
+++ b/data/schemas/keyboard.jsonschema
@@ -34,7 +34,7 @@
         },
         "development_board": {
             "type": "string",
-            "enum": ["promicro", "elite_c", "proton_c", "kb2040", "promicro_rp2040", "blok", "bluepill", "blackpill_f401", "blackpill_f411"]
+            "enum": ["promicro", "elite_c", "proton_c", "kb2040", "promicro_rp2040", "blok", "bit_c_pro", "bluepill", "blackpill_f401", "blackpill_f411"]
         },
         "pin_compatible": {
             "type": "string",
diff --git a/docs/feature_converters.md b/docs/feature_converters.md
index 11dcc62b2a..569cf0f17d 100644
--- a/docs/feature_converters.md
+++ b/docs/feature_converters.md
@@ -14,6 +14,7 @@ Currently the following converters are available:
 | `promicro` | `kb2040`          |
 | `promicro` | `promicro_rp2040` |
 | `promicro` | `blok`            |
+| `promicro` | `bit_c_pro`       |
 
 See below for more in depth information on each converter.
 
@@ -54,6 +55,7 @@ If a board currently supported in QMK uses a [Pro Micro](https://www.sparkfun.co
 | [Adafruit KB2040](https://learn.adafruit.com/adafruit-kb2040)          | `kb2040`          |
 | [SparkFun Pro Micro - RP2040](https://www.sparkfun.com/products/18288) | `promicro_rp2040` |
 | [Blok](https://boardsource.xyz/store/628b95b494dfa308a6581622)         | `blok`            |
+| [Bit-C PRO](https://nullbits.co/bit-c-pro)                             | `bit_c_pro`       |
 
 Converter summary:
 
@@ -63,6 +65,7 @@ Converter summary:
 | `kb2040`          | `-e CONVERT_TO=kb2040`          | `CONVERT_TO=kb2040`          | `#ifdef CONVERT_TO_KB2040`          |
 | `promicro_rp2040` | `-e CONVERT_TO=promicro_rp2040` | `CONVERT_TO=promicro_rp2040` | `#ifdef CONVERT_TO_PROMICRO_RP2040` |
 | `blok`            | `-e CONVERT_TO=blok`            | `CONVERT_TO=blok`            | `#ifdef CONVERT_TO_BLOK`            |
+| `bit_c_pro`       | `-e CONVERT_TO=bit_c_pro`       | `CONVERT_TO=bit_c_pro`       | `#ifdef CONVERT_TO_BIT_C_PRO`       |
 
 ### Proton C :id=proton_c
 
@@ -93,6 +96,6 @@ 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 and Blok :id=promicro_rp2040 
+### SparkFun Pro Micro - RP2040, Blok, and Bit-C PRO :id=promicro_rp2040 
 
 Currently identical to  [Adafruit KB2040](#kb2040).
diff --git a/platforms/chibios/converters/promicro_to_bit_c_pro/_pin_defs.h b/platforms/chibios/converters/promicro_to_bit_c_pro/_pin_defs.h
new file mode 100644
index 0000000000..92e8fbfa1a
--- /dev/null
+++ b/platforms/chibios/converters/promicro_to_bit_c_pro/_pin_defs.h
@@ -0,0 +1,39 @@
+// 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 4U
+#define C6 5U
+#define D7 6U
+#define E6 7U
+#define B4 8U
+#define B5 9U
+
+// Right side (front)
+//      RAW
+//      GND
+//      RESET
+//      VCC
+#define F4 29U
+#define F5 28U
+#define F6 27U
+#define F7 26U
+#define B1 22U
+#define B3 20U
+#define B2 23U
+#define B6 21U
+
+// LEDs (Mapped to R and G channel of the Bit-C PRO's RGB led)
+#define D5 16U
+#define B0 17U
+
+// Bit-C LED (mapped to B channel of the Bit-C PRO's RGB led)
+#define F0 18U
diff --git a/platforms/chibios/converters/promicro_to_bit_c_pro/converter.mk b/platforms/chibios/converters/promicro_to_bit_c_pro/converter.mk
new file mode 100644
index 0000000000..c0eaee8593
--- /dev/null
+++ b/platforms/chibios/converters/promicro_to_bit_c_pro/converter.mk
@@ -0,0 +1,12 @@
+# nullbits Bit-C PRO 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
+
+# Tell QMK to use the correct 2nd stage bootloader
+OPT_DEFS += -DRP2040_FLASH_W25X10CL