Add Bonsai C4 as a platform board file

data/mappings/defaults.hjson

@@ -70,7 +70,7 @@
         "bonsai_c4": {
             "processor": "STM32F411",
             "bootloader": "stm32-dfu",
-            "board": "GENERIC_STM32_F411XE",
+            "board": "BONSAI_C4",
             "pin_compatible": "promicro"
         }
     }

docs/feature_converters.md

@@ -157,8 +157,6 @@ The Bonsai C4 only has one on-board LED (B2), and by default, both the Pro Micro
 #define B0 PAL_LINE(GPIOA, 9)
 ```
 
-No peripherals are enabled by default at this time, but example code to enable SPI, I2C, PWM, and Serial communications can be found [here](/keyboards/custommk/bonsai_c4_template).
-
 ## Elite-C
 
 If a board currently supported in QMK uses an [Elite-C](https://keeb.io/products/elite-c-low-profile-version-usb-c-pro-micro-replacement-atmega32u4), the supported alternative controllers are:

platforms/chibios/boards/BONSAI_C4/board/board.mk

@@ -0,0 +1,9 @@
+# List of all the board related files.
+BOARDSRC = $(CHIBIOS)/os/hal/boards/ST_NUCLEO64_F411RE/board.c
+
+# Required include directories
+BOARDINC = $(CHIBIOS)/os/hal/boards/ST_NUCLEO64_F411RE
+
+# Shared variables
+ALLCSRC += $(BOARDSRC)
+ALLINC  += $(BOARDINC)

platforms/chibios/boards/BONSAI_C4/configs/board.h

@@ -0,0 +1,20 @@
+/* Copyright 2020 Nick Brassel (tzarc)
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include_next "board.h"
+
+#undef STM32_HSE_BYPASS

platforms/chibios/boards/BONSAI_C4/configs/config.h

@@ -0,0 +1,92 @@
+/* Copyright 2022 David Hoelscher, customMK
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+// Bonsai C4 includes Vbus sensing; derived designs that use PA9 for other purposes
+// may disable Vbus sensing with #define BOARD_OTG_NOVBUSSENS 1
+
+#ifndef EARLY_INIT_PERFORM_BOOTLOADER_JUMP
+#    define EARLY_INIT_PERFORM_BOOTLOADER_JUMP TRUE
+#endif
+
+// FRAM configuration
+#ifndef EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN
+#    define EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN PAL_LINE(GPIOA, 0)
+#    define EXTERNAL_EEPROM_SPI_CLOCK_DIVISOR 8 // 96MHz / 8 = 12MHz; max supported by MB85R64 is 20MHz
+#    define EXTERNAL_EEPROM_BYTE_COUNT 8192
+#    define EXTERNAL_EEPROM_PAGE_SIZE 64 // does not matter for FRAM, just sets the RAM buffer size in STM32F chip
+#    define DYNAMIC_KEYMAP_EEPROM_MAX_ADDR 8191
+#endif
+
+// External flash configuration
+#ifndef EXTERNAL_FLASH_SPI_SLAVE_SELECT_PIN
+#    define EXTERNAL_FLASH_SPI_SLAVE_SELECT_PIN PAL_LINE(GPIOB, 12)
+#    define EXTERNAL_FLASH_SPI_CLOCK_DIVISOR 1  // 96MHz; max supported by W25Q128JV is 133MHz
+#    define EXTERNAL_FLASH_BYTE_COUNT (16 * 1024 * 1024)  //128Mbit or 16MByte
+#    define EXTERNAL_FLASH_PAGE_SIZE 256
+#    define EXTERNAL_FLASH_SPI_TIMEOUT 200000 //datasheet max is 200 seconds for flash chip erase
+#endif
+
+// SPI Configuration (needed for FRAM and FLASH)
+#ifndef SPI_DRIVER
+#    define SPI_DRIVER SPID1
+#endif
+#ifndef SPI_SCK_PIN
+#    define SPI_SCK_PIN PAL_LINE(GPIOB, 3)
+#endif
+#ifndef SPI_MOSI_PIN
+#    define SPI_MOSI_PIN PAL_LINE(GPIOB, 5)
+#endif
+#ifndef SPI_MISO_PIN
+#    define SPI_MISO_PIN PAL_LINE(GPIOB, 4)
+#endif
+
+
+// I2C Configuration
+#ifdef CONVERT_TO_BONSAI_C4
+#    ifndef I2C1_SCL_PIN
+#        define I2C1_SCL_PIN PAL_LINE(GPIOB, 6)
+#    endif
+#    ifndef I2C1_SDA_PIN
+#        define I2C1_SDA_PIN PAL_LINE(GPIOB, 9)
+#    endif
+#endif
+
+// WS2812-style LED control on pin A10
+#ifdef WS2812_DRIVER_PWM
+#    ifndef RGB_DI_PIN
+#        define RGB_DI_PIN PAL_LINE(GPIOA, 10)
+#    endif
+#    ifndef WS2812_PWM_DRIVER
+#        define WS2812_PWM_DRIVER PWMD1
+#    endif
+#    ifndef WS2812_PWM_CHANNEL
+#        define WS2812_PWM_CHANNEL 3
+#    endif
+#    ifndef WS2812_PWM_PAL_MODE
+#        define WS2812_PWM_PAL_MODE 1
+#    endif
+#    ifndef WS2812_DMA_STREAM
+#        define WS2812_DMA_STREAM STM32_DMA2_STREAM5
+#    endif
+#    ifndef WS2812_DMA_CHANNEL
+#        define WS2812_DMA_CHANNEL 6
+#    endif
+#endif
+
+#ifndef USB_VBUS_PIN
+#    define USB_VBUS_PIN PAL_LINE(GPIOA, 9)
+#endif

platforms/chibios/boards/BONSAI_C4/configs/halconf.h

@@ -0,0 +1,49 @@
+/* Copyright 2022 David Hoelscher, customMK
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#ifndef HAL_USE_SPI
+#    define HAL_USE_SPI TRUE
+#endif
+
+#ifndef HAL_USE_I2C
+#    define HAL_USE_I2C TRUE
+#endif
+
+#ifdef SPLIT_KEYBOARD
+#    ifndef HAL_USE_SERIAL
+#        define HAL_USE_SERIAL TRUE
+#    endif
+#    ifndef SERIAL_BUFFERS_SIZE
+#        define SERIAL_BUFFERS_SIZE 256
+#    endif
+#endif
+
+#ifdef WS2812_DRIVER_PWM
+#    ifndef HAL_USE_PWM
+#        define HAL_USE_PWM TRUE
+#    endif
+#endif
+
+#ifndef SPI_SELECT_MODE
+#    define SPI_SELECT_MODE SPI_SELECT_MODE_PAD
+#endif
+
+#ifndef SPI_USE_WAIT
+#    define SPI_USE_WAIT TRUE
+#endif
+
+#include_next <halconf.h>