circuitpython/ports/stm32/boards/STM32F7DISC/mpconfigboard.h

#define MICROPY_HW_BOARD_NAME       "F7DISC"
#define MICROPY_HW_MCU_NAME         "STM32F746"

#define MICROPY_HW_HAS_SWITCH       (1)
#define MICROPY_HW_HAS_FLASH        (1)
#define MICROPY_HW_ENABLE_RNG       (1)
#define MICROPY_HW_ENABLE_RTC       (1)
#define MICROPY_HW_ENABLE_USB       (1)
#define MICROPY_HW_ENABLE_SDCARD    (1)

#define MICROPY_BOARD_EARLY_INIT    STM32F7DISC_board_early_init
void STM32F7DISC_board_early_init(void);

// HSE is 25MHz
// VCOClock = HSE * PLLN / PLLM = 25 MHz * 384 / 25 = 384 MHz
// SYSCLK = VCOClock / PLLP = 384 MHz / 2 = 192 MHz
// USB/SDMMC/RNG Clock = VCOClock / PLLQ = 384 MHz / 8 = 48 MHz
// Note: SDRAM requires SYSCLK <= 200MHz
// SYSCLK can be increased to 216MHz if SDRAM is disabled
#define MICROPY_HW_CLK_PLLM (25)
#define MICROPY_HW_CLK_PLLN (384)
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (8)

// From the reference manual, for 2.7V to 3.6V
// 151-180 MHz => 5 wait states
// 181-210 MHz => 6 wait states
// 211-216 MHz => 7 wait states
#define MICROPY_HW_FLASH_LATENCY    FLASH_LATENCY_6 // 181-210 MHz => 6 wait states

// UART config
#define MICROPY_HW_UART1_TX         (pin_A9)
#define MICROPY_HW_UART1_RX         (pin_B7)
#define MICROPY_HW_UART6_TX         (pin_C6)
#define MICROPY_HW_UART6_RX         (pin_C7)
#define MICROPY_HW_UART7_TX         (pin_F6)
#define MICROPY_HW_UART7_RX         (pin_F7)
#define MICROPY_HW_UART_REPL        PYB_UART_1
#define MICROPY_HW_UART_REPL_BAUD   115200

// I2C buses
#define MICROPY_HW_I2C1_SCL         (pin_B8)
#define MICROPY_HW_I2C1_SDA         (pin_B9)

#define MICROPY_HW_I2C3_SCL         (pin_H7)
#define MICROPY_HW_I2C3_SDA         (pin_H8)

// SPI buses
#define MICROPY_HW_SPI2_NSS         (pin_I0)
#define MICROPY_HW_SPI2_SCK         (pin_I1)
#define MICROPY_HW_SPI2_MISO        (pin_B14)
#define MICROPY_HW_SPI2_MOSI        (pin_B15)

// CAN buses
#define MICROPY_HW_CAN1_TX          (pin_B9)
#define MICROPY_HW_CAN1_RX          (pin_B8)
#define MICROPY_HW_CAN2_TX          (pin_B13)
#define MICROPY_HW_CAN2_RX          (pin_B12)

// USRSW is pulled low. Pressing the button makes the input go high.
#define MICROPY_HW_USRSW_PIN        (pin_I11)
#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_I1) // green
#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 (CN13 - USB OTG FS)
// The Hardware VBUS detect only works on pin PA9. The STM32F7 Discovery uses
// PA9 for VCP_TX functionality and connects the VBUS to pin J12 (so software
// only detect). So we don't define the VBUS detect pin since that requires PA9.
#define MICROPY_HW_USB_FS              (1)
/*#define MICROPY_HW_USB_VBUS_DETECT_PIN (pin_J12)*/
#define MICROPY_HW_USB_OTG_ID_PIN      (pin_A10)

// Ethernet via RMII
#define MICROPY_HW_ETH_MDC          (pin_C1)
#define MICROPY_HW_ETH_MDIO         (pin_A2)
#define MICROPY_HW_ETH_RMII_REF_CLK (pin_A1)
#define MICROPY_HW_ETH_RMII_CRS_DV  (pin_A7)
#define MICROPY_HW_ETH_RMII_RXD0    (pin_C4)
#define MICROPY_HW_ETH_RMII_RXD1    (pin_C5)
#define MICROPY_HW_ETH_RMII_RXER    (pin_G2)
#define MICROPY_HW_ETH_RMII_TX_EN   (pin_G11)
#define MICROPY_HW_ETH_RMII_TXD0    (pin_G13)
#define MICROPY_HW_ETH_RMII_TXD1    (pin_G14)

// SDRAM
#define MICROPY_HW_SDRAM_SIZE  (64 / 8 * 1024 * 1024)  // 64 Mbit
#define MICROPY_HW_SDRAM_STARTUP_TEST             (1)
#define MICROPY_HEAP_START              sdram_start()
#define MICROPY_HEAP_END                sdram_end()

// Timing configuration for 90 Mhz (11.90ns) of SD clock frequency (180Mhz/2)
#define MICROPY_HW_SDRAM_TIMING_TMRD        (2)
#define MICROPY_HW_SDRAM_TIMING_TXSR        (7)
#define MICROPY_HW_SDRAM_TIMING_TRAS        (4)
#define MICROPY_HW_SDRAM_TIMING_TRC         (7)
#define MICROPY_HW_SDRAM_TIMING_TWR         (2)
#define MICROPY_HW_SDRAM_TIMING_TRP         (2)
#define MICROPY_HW_SDRAM_TIMING_TRCD        (2)
#define MICROPY_HW_SDRAM_REFRESH_RATE       (64) // ms

#define MICROPY_HW_SDRAM_BURST_LENGTH       1
#define MICROPY_HW_SDRAM_CAS_LATENCY        2
#define MICROPY_HW_SDRAM_COLUMN_BITS_NUM    8
#define MICROPY_HW_SDRAM_ROW_BITS_NUM       12
#define MICROPY_HW_SDRAM_MEM_BUS_WIDTH      16
#define MICROPY_HW_SDRAM_INTERN_BANKS_NUM   4
#define MICROPY_HW_SDRAM_CLOCK_PERIOD       2
#define MICROPY_HW_SDRAM_RPIPE_DELAY        0
#define MICROPY_HW_SDRAM_RBURST             (1)
#define MICROPY_HW_SDRAM_WRITE_PROTECTION   (0)
#define MICROPY_HW_SDRAM_AUTOREFRESH_NUM    (8)

#define MICROPY_HW_FMC_SDCKE0   (pin_C3)
#define MICROPY_HW_FMC_SDNE0    (pin_H3)
#define MICROPY_HW_FMC_SDCLK    (pin_G8)
#define MICROPY_HW_FMC_SDNCAS   (pin_G15)
#define MICROPY_HW_FMC_SDNRAS   (pin_F11)
#define MICROPY_HW_FMC_SDNWE    (pin_H5)
#define MICROPY_HW_FMC_BA0      (pin_G4)
#define MICROPY_HW_FMC_BA1      (pin_G5)
#define MICROPY_HW_FMC_NBL0     (pin_E0)
#define MICROPY_HW_FMC_NBL1     (pin_E1)
#define MICROPY_HW_FMC_A0       (pin_F0)
#define MICROPY_HW_FMC_A1       (pin_F1)
#define MICROPY_HW_FMC_A2       (pin_F2)
#define MICROPY_HW_FMC_A3       (pin_F3)
#define MICROPY_HW_FMC_A4       (pin_F4)
#define MICROPY_HW_FMC_A5       (pin_F5)
#define MICROPY_HW_FMC_A6       (pin_F12)
#define MICROPY_HW_FMC_A7       (pin_F13)
#define MICROPY_HW_FMC_A8       (pin_F14)
#define MICROPY_HW_FMC_A9       (pin_F15)
#define MICROPY_HW_FMC_A10      (pin_G0)
#define MICROPY_HW_FMC_A11      (pin_G1)
#define MICROPY_HW_FMC_D0       (pin_D14)
#define MICROPY_HW_FMC_D1       (pin_D15)
#define MICROPY_HW_FMC_D2       (pin_D0)
#define MICROPY_HW_FMC_D3       (pin_D1)
#define MICROPY_HW_FMC_D4       (pin_E7)
#define MICROPY_HW_FMC_D5       (pin_E8)
#define MICROPY_HW_FMC_D6       (pin_E9)
#define MICROPY_HW_FMC_D7       (pin_E10)
#define MICROPY_HW_FMC_D8       (pin_E11)
#define MICROPY_HW_FMC_D9       (pin_E12)
#define MICROPY_HW_FMC_D10      (pin_E13)
#define MICROPY_HW_FMC_D11      (pin_E14)
#define MICROPY_HW_FMC_D12      (pin_E15)
#define MICROPY_HW_FMC_D13      (pin_D8)
#define MICROPY_HW_FMC_D14      (pin_D9)
#define MICROPY_HW_FMC_D15      (pin_D10)