circuitpython/stmhal/boards/STM32F4DISC/mpconfigboard.h

#define STM32F4DISC

#define MICROPY_HW_BOARD_NAME       "F4DISC"
#define MICROPY_HW_MCU_NAME         "STM32F407"

#define MICROPY_HW_HAS_SWITCH       (1)
#define MICROPY_HW_HAS_FLASH        (1)
#define MICROPY_HW_HAS_SDCARD       (0)
#define MICROPY_HW_HAS_MMA7660      (0)
#define MICROPY_HW_HAS_LIS3DSH      (1)
#define MICROPY_HW_HAS_LCD          (0)
#define MICROPY_HW_ENABLE_RNG       (1)
#define MICROPY_HW_ENABLE_RTC       (1)
#define MICROPY_HW_ENABLE_TIMER     (1)
#define MICROPY_HW_ENABLE_SERVO     (0)
#define MICROPY_HW_ENABLE_DAC       (1)
#define MICROPY_HW_ENABLE_CAN       (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)

// UART config
#if 0
// A9 is used for USB VBUS detect, and A10 is used for USB_FS_ID.
// UART1 is also on PB6/7 but PB6 is tied to the Audio SCL line.
// Without board modifications, this makes UART1 unusable on this board.
#define MICROPY_HW_UART1_PORT (GPIOA)
#define MICROPY_HW_UART1_PINS (GPIO_PIN_9 | GPIO_PIN_10)
#endif

#define MICROPY_HW_UART2_PORT (GPIOA)
#define MICROPY_HW_UART2_PINS (GPIO_PIN_2 | GPIO_PIN_3)
#define MICROPY_HW_UART2_RTS  (GPIO_PIN_1)
#define MICROPY_HW_UART2_CTS  (GPIO_PIN_0)

#define MICROPY_HW_UART3_PORT (GPIOD)
#define MICROPY_HW_UART3_PINS (GPIO_PIN_8 | GPIO_PIN_9)
#define MICROPY_HW_UART3_RTS  (GPIO_PIN_12)
#define MICROPY_HW_UART3_CTS  (GPIO_PIN_11)

#if MICROPY_HW_HAS_SWITCH == 0
// NOTE: A0 also connects to the user switch. To use UART4 you should 
//       set MICROPY_HW_HAS_SWITCH to 0, and also remove SB20 (on the back
//       of the board near the USER switch).
#define MICROPY_HW_UART4_PORT (GPIOA)
#define MICROPY_HW_UART4_PINS (GPIO_PIN_0 | GPIO_PIN_1)
#endif

// NOTE: PC7 is connected to MCLK on the Audio chip. This is an input signal
//       so I think as long as you're not using the audio chip then it should
//       be fine to use as a UART pin.
#define MICROPY_HW_UART6_PORT (GPIOC)
#define MICROPY_HW_UART6_PINS (GPIO_PIN_6 | GPIO_PIN_7)

// I2C busses
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)
#define MICROPY_HW_I2C2_SCL (pin_B10)
#define MICROPY_HW_I2C2_SDA (pin_B11)

// SPI busses
#define MICROPY_HW_SPI1_NSS  (pin_A4)
#define MICROPY_HW_SPI1_SCK  (pin_A5)
#define MICROPY_HW_SPI1_MISO (pin_A6)
#define MICROPY_HW_SPI1_MOSI (pin_A7)
#define MICROPY_HW_SPI2_NSS  (pin_B12)
#define MICROPY_HW_SPI2_SCK  (pin_B13)
#define MICROPY_HW_SPI2_MISO (pin_B14)
#define MICROPY_HW_SPI2_MOSI (pin_B15)

// USRSW is pulled low. Pressing the button makes the input go high.
#define MICROPY_HW_USRSW_PIN        (pin_A0)
#define MICROPY_HW_USRSW_PULL       (GPIO_NOPULL)
#define MICROPY_HW_USRSW_EXTI_MODE  (GPIO_MODE_IT_RISING)
#define MICROPY_HW_USRSW_PRESSED    (1)

// LEDs
#define MICROPY_HW_LED1             (pin_D14) // red
#define MICROPY_HW_LED2             (pin_D12) // green
#define MICROPY_HW_LED3             (pin_D13) // orange
#define MICROPY_HW_LED4             (pin_D15) // blue
#define MICROPY_HW_LED_ON(pin)      (mp_hal_pin_high(pin))
#define MICROPY_HW_LED_OFF(pin)     (mp_hal_pin_low(pin))

// USB config
#define MICROPY_HW_USB_VBUS_DETECT_PIN (pin_A9)
#define MICROPY_HW_USB_OTG_ID_PIN      (pin_A10)