#define STM32F7DISC #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_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 (1) #define MICROPY_HW_ENABLE_TIMER (1) #define MICROPY_HW_ENABLE_SERVO (0) #define MICROPY_HW_ENABLE_DAC (0) #define MICROPY_HW_ENABLE_CAN (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 * 432 / 25 = 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 (25) #define MICROPY_HW_CLK_PLLN (432) #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_UART1_TX_PORT (GPIOA) #define MICROPY_HW_UART1_TX_PIN (GPIO_PIN_9) #define MICROPY_HW_UART1_RX_PORT (GPIOB) #define MICROPY_HW_UART1_RX_PIN (GPIO_PIN_7) #define MICROPY_HW_UART6_PORT (GPIOC) #define MICROPY_HW_UART6_PINS (GPIO_PIN_6 | GPIO_PIN_7) #define MICROPY_HW_UART7_PORT (GPIOF) #define MICROPY_HW_UART7_PINS (GPIO_PIN_6 | GPIO_PIN_7) #define MICROPY_HW_UART_REPL PYB_UART_1 #define MICROPY_HW_UART_REPL_BAUD 115200 // I2C busses #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) // The STM32F7 uses a TIMINGR register which is configured using an Excel // Spreadsheet from AN4235: http://www.st.com/web/en/catalog/tools/PF258335 // We use an array of baudrates and corresponding TIMINGR values. // // The value 0x40912732 was obtained from the DISCOVERY_I2Cx_TIMING constant // defined in the STM32F7Cube file Drivers/BSP/STM32F746G-Discovery/stm32f7456g_discovery.h #define MICROPY_HW_I2C_BAUDRATE_TIMING {{100000, 0x40912732}} #define MICROPY_HW_I2C_BAUDRATE_DEFAULT 100000 #define MICROPY_HW_I2C_BAUDRATE_MAX 100000 // SPI #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) // 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_OTYPE (GPIO_MODE_OUTPUT_PP) #define MICROPY_HW_LED_ON(pin) (pin->gpio->BSRR = pin->pin_mask) #define MICROPY_HW_LED_OFF(pin) (pin->gpio->BSRR = (pin->pin_mask << 16)) // 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_VBUS_DETECT_PIN (pin_J12)*/ #define MICROPY_HW_USB_OTG_ID_PIN (pin_A10)