circuitpython/ports/stm32/boards/PYBV3/mpconfigboard.h

#define MICROPY_HW_BOARD_NAME       "PYBv3"
#define MICROPY_HW_MCU_NAME         "STM32F405RG"

#define MICROPY_HW_HAS_SWITCH       (1)
#define MICROPY_HW_HAS_FLASH        (1)
#define MICROPY_HW_HAS_SDCARD       (1)
#define MICROPY_HW_HAS_MMA7660      (1)
#define MICROPY_HW_ENABLE_RNG       (1)
#define MICROPY_HW_ENABLE_RTC       (1)
#define MICROPY_HW_ENABLE_SERVO     (1)
#define MICROPY_HW_ENABLE_DAC       (1)
#define MICROPY_HW_ENABLE_USB       (1)

// HSE is 8MHz
#define MICROPY_HW_CLK_PLLM (8)
#define MICROPY_HW_CLK_PLLN (336)
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (7)

// The pyboard has a 32kHz crystal for the RTC
#define MICROPY_HW_RTC_USE_LSE      (1)

// UART config
#define MICROPY_HW_UART1_TX     (pin_A9)
#define MICROPY_HW_UART1_RX     (pin_A10)
#define MICROPY_HW_UART2_TX     (pin_A2)
#define MICROPY_HW_UART2_RX     (pin_A3)
#define MICROPY_HW_UART2_RTS    (pin_A1)
#define MICROPY_HW_UART2_CTS    (pin_A0)
#define MICROPY_HW_UART3_TX     (pin_B10)
#define MICROPY_HW_UART3_RX     (pin_B11)
#define MICROPY_HW_UART3_RTS    (pin_B14)
#define MICROPY_HW_UART3_CTS    (pin_B13)
#define MICROPY_HW_UART4_TX     (pin_A0)
#define MICROPY_HW_UART4_RX     (pin_A1)
#define MICROPY_HW_UART6_TX     (pin_C6)
#define MICROPY_HW_UART6_RX     (pin_C7)

// X-skin: X9=PB6=SCL, X10=PB7=SDA
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)

// Y-skin: Y9=PB10=SCL, Y10=PB11=SDA
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)

// SPI busses
#define MICROPY_HW_SPI1_NAME "X"
#define MICROPY_HW_SPI1_NSS  (pin_A4) // X5
#define MICROPY_HW_SPI1_SCK  (pin_A5) // X6
#define MICROPY_HW_SPI1_MISO (pin_A6) // X7
#define MICROPY_HW_SPI1_MOSI (pin_A7) // X8
#define MICROPY_HW_SPI2_NAME "Y"
#define MICROPY_HW_SPI2_NSS  (pin_B12) // Y5
#define MICROPY_HW_SPI2_SCK  (pin_B13) // Y6
#define MICROPY_HW_SPI2_MISO (pin_B14) // Y7
#define MICROPY_HW_SPI2_MOSI (pin_B15) // Y8

// CAN busses
#define MICROPY_HW_CAN1_TX (pin_B9) // Y4
#define MICROPY_HW_CAN1_RX (pin_B8) // Y3
#define MICROPY_HW_CAN2_TX (pin_B13) // Y6
#define MICROPY_HW_CAN2_RX (pin_B12) // Y5

// USRSW has no pullup or pulldown, and pressing the switch makes the input go low
#define MICROPY_HW_USRSW_PIN        (pin_A13)
#define MICROPY_HW_USRSW_PULL       (GPIO_PULLUP)
#define MICROPY_HW_USRSW_EXTI_MODE  (GPIO_MODE_IT_FALLING)
#define MICROPY_HW_USRSW_PRESSED    (0)

// LEDs
#define MICROPY_HW_LED_INVERTED     (1) // LEDs are on when pin is driven low
#define MICROPY_HW_LED1             (pin_A8)  // R1 - red
#define MICROPY_HW_LED2             (pin_A10) // R2 - red
#define MICROPY_HW_LED3             (pin_C4)  // G1 - green
#define MICROPY_HW_LED4             (pin_C5)  // G2 - green
#define MICROPY_HW_LED1_PWM         { TIM1, 1, TIM_CHANNEL_1, GPIO_AF1_TIM1 }
#define MICROPY_HW_LED2_PWM         { TIM1, 1, TIM_CHANNEL_3, GPIO_AF1_TIM1 }
#define MICROPY_HW_LED_ON(pin)      (mp_hal_pin_low(pin))
#define MICROPY_HW_LED_OFF(pin)     (mp_hal_pin_high(pin))

// SD card detect switch
#define MICROPY_HW_SDCARD_DETECT_PIN        (pin_C13)
#define MICROPY_HW_SDCARD_DETECT_PULL       (GPIO_PULLDOWN)
#define MICROPY_HW_SDCARD_DETECT_PRESENT    (GPIO_PIN_SET)

// USB VBUS detect pin
#define MICROPY_HW_USB_FS              (1)
#define MICROPY_HW_USB_VBUS_DETECT_PIN (pin_A9)

// MMA accelerometer config
#define MICROPY_HW_MMA_AVDD_PIN     (pin_B5)