trezor-firmware/micropython/firmware/mpconfigboard.h

#define MICROPY_HW_BOARD_NAME       "TREZORv2"
#define MICROPY_HW_MCU_NAME         "STM32F405VG"
#define MICROPY_PY_SYS_PLATFORM     "trezor"

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

// 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)
#define MICROPY_HW_CLK_LAST_FREQ (1)

// I2C busses
#define MICROPY_HW_I2C1_NAME "I2C"
#define MICROPY_HW_I2C1_SCL (pin_B6)
#define MICROPY_HW_I2C1_SDA (pin_B7)

// UART config
#define MICROPY_HW_UART1_NAME   "UART"
#define MICROPY_HW_UART1_TX     (pin_A2)
#define MICROPY_HW_UART1_RX     (pin_A3)

// The board has 2 LEDs
#define MICROPY_HW_LED1             (pin_C6)
#define MICROPY_HW_LED2             (pin_B13)
#define MICROPY_HW_LED2_PWM         { TIM1, 1, TIM_CHANNEL_1, GPIO_AF1_TIM1 }
#define MICROPY_HW_LED_OTYPE        (GPIO_MODE_OUTPUT_PP)
#define MICROPY_HW_LED_ON(pin)      (mp_hal_pin_high(pin))
#define MICROPY_HW_LED_OFF(pin)     (mp_hal_pin_low(pin))

// SD card detect switch
#define MICROPY_HW_SDCARD_DETECT_PIN        (pin_C13)
#define MICROPY_HW_SDCARD_DETECT_PULL       (GPIO_PULLUP)
#define MICROPY_HW_SDCARD_DETECT_PRESENT    (GPIO_PIN_RESET)

// USB config
#define MICROPY_HW_USB_VBUS_DETECT_PIN (pin_A9)