// This board is only confirmed to operate using DFU mode and openocd.
// DFU mode can be accessed by setting BOOT0 (see schematics)
// To use openocd run "OPENOCD_CONFIG=boards/openocd_stm32f7.cfg" in
// the make command.

#define MICROPY_HW_BOARD_NAME       "NUCLEO-F746ZG"
#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_DAC       (1)
#define MICROPY_HW_ENABLE_USB       (1)

// HSE is 8MHz
// VCOClock = HSE * PLLN / PLLM = 8 MHz * 216 / 4 = 432 MHz
// SYSCLK = VCOClock / PLLP = 432 MHz / 2 = 216 MHz
// USB/SDMMC/RNG Clock = VCOClock / PLLQ = 432 MHz / 9 = 48 MHz
#define MICROPY_HW_CLK_PLLM (4)
#define MICROPY_HW_CLK_PLLN (216)
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (9)

// 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_7 // 210-216 MHz needs 7 wait states

// UART config
#define MICROPY_HW_UART2_TX         (pin_D5)
#define MICROPY_HW_UART2_RX         (pin_D6)
#define MICROPY_HW_UART2_RTS        (pin_D4)
#define MICROPY_HW_UART2_CTS        (pin_D3)
#define MICROPY_HW_UART3_TX         (pin_D8)
#define MICROPY_HW_UART3_RX         (pin_D9)
#define MICROPY_HW_UART6_TX         (pin_G14)
#define MICROPY_HW_UART6_RX         (pin_G9)
#define MICROPY_HW_UART_REPL        PYB_UART_3
#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_SPI3_NSS         (pin_A4)
#define MICROPY_HW_SPI3_SCK         (pin_B3)
#define MICROPY_HW_SPI3_MISO        (pin_B4)
#define MICROPY_HW_SPI3_MOSI        (pin_B5)

// 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_C13)
#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_B0) // green
#define MICROPY_HW_LED2             (pin_B7) // blue
#define MICROPY_HW_LED3             (pin_B14) // red
#define MICROPY_HW_LED_ON(pin)      (mp_hal_pin_high(pin))
#define MICROPY_HW_LED_OFF(pin)     (mp_hal_pin_low(pin))

// USB config (CN13 - USB OTG FS)
#define MICROPY_HW_USB_FS              (1)
#define MICROPY_HW_USB_VBUS_DETECT_PIN (pin_A9)
#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_TX_EN   (pin_G11)
#define MICROPY_HW_ETH_RMII_TXD0    (pin_G13)
#define MICROPY_HW_ETH_RMII_TXD1    (pin_B13)
