ardupilot/libraries/AP_HAL_ChibiOS/hwdef/MatekL431/hwdef-bl.inc

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# hw definition file Matek L431 CAN node
# MCU class and specific type
MCU STM32L431 STM32L431xx
# crystal frequency
OSCILLATOR_HZ 8000000
# board ID for firmware load
APJ_BOARD_ID 1062
# setup build for a peripheral firmware
env AP_PERIPH 1
FLASH_RESERVE_START_KB 0
FLASH_BOOTLOADER_LOAD_KB 36
FLASH_SIZE_KB 256
# reserve some space for params
APP_START_OFFSET_KB 4
STDOUT_SERIAL SD1
STDOUT_BAUDRATE 57600
# ---------------------------------------------
PB3 LED_BOOTLOADER OUTPUT LOW # blue
define HAL_LED_ON 0
# order of UARTs
SERIAL_ORDER USART1 USART2 USART3
PB6 USART1_TX USART1 NODMA
PB7 USART1_RX USART1 NODMA
PA2 USART2_TX USART2 NODMA
PA3 USART2_RX USART2 NODMA
PB10 USART3_TX USART3 NODMA
PB11 USART3_RX USART3 NODMA
define HAL_USE_SERIAL TRUE
define STM32_SERIAL_USE_USART1 TRUE
define STM32_SERIAL_USE_USART2 TRUE
define STM32_SERIAL_USE_USART3 TRUE
# enable CAN support
PB8 CAN1_RX CAN1
PB9 CAN1_TX CAN1
# PC13 GPIO_CAN1_SILENT OUTPUT PUSHPULL SPEED_LOW LOW
CAN_ORDER 1
# ---------------------------------------------
# make bl baudrate match debug baudrate for easier debugging
define BOOTLOADER_BAUDRATE 57600
# use a small bootloader timeout
define HAL_BOOTLOADER_TIMEOUT 1000
define HAL_USE_SERIAL TRUE
define STM32_SERIAL_USE_USART1 TRUE
define STM32_SERIAL_USE_USART2 TRUE
define HAL_NO_GPIO_IRQ
define SERIAL_BUFFERS_SIZE 32
define HAL_USE_EMPTY_IO TRUE
define PORT_INT_REQUIRED_STACK 64
define DMA_RESERVE_SIZE 0
MAIN_STACK 0x800
PROCESS_STACK 0x800
define HAL_DISABLE_LOOP_DELAY
# Add CS pins to ensure they are high in bootloader
PA4 MAG_CS CS
PB2 SPARE_CS CS
# debugger support
PA13 JTMS-SWDIO SWD
PA14 JTCK-SWCLK SWD