stm32/boards: Add VCC_GND_F407ZG board.

ports/stm32/boards/VCC_GND_F407ZG/bdev.c

@@ -0,0 +1,28 @@
+#include "storage.h"
+
+#if !MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE
+
+// External SPI flash uses standard SPI interface
+
+STATIC const mp_soft_spi_obj_t soft_spi_bus = {
+    .delay_half = MICROPY_HW_SOFTSPI_MIN_DELAY,
+    .polarity = 0,
+    .phase = 0,
+    .sck = MICROPY_HW_SPIFLASH_SCK,
+    .mosi = MICROPY_HW_SPIFLASH_MOSI,
+    .miso = MICROPY_HW_SPIFLASH_MISO,
+};
+
+STATIC mp_spiflash_cache_t spi_bdev_cache;
+
+const mp_spiflash_config_t spiflash_config = {
+    .bus_kind = MP_SPIFLASH_BUS_SPI,
+    .bus.u_spi.cs = MICROPY_HW_SPIFLASH_CS,
+    .bus.u_spi.data = (void*)&soft_spi_bus,
+    .bus.u_spi.proto = &mp_soft_spi_proto,
+    .cache = &spi_bdev_cache,
+};
+
+spi_bdev_t spi_bdev;
+
+#endif

ports/stm32/boards/VCC_GND_F407ZG/board_init.c

@@ -0,0 +1,7 @@
+#include "py/mphal.h"
+
+void VCC_GND_F407ZG_board_early_init(void) {
+    // set SPI flash CS pin high
+    mp_hal_pin_output(pin_C4);
+    mp_hal_pin_write(pin_C4, 1);
+}

ports/stm32/boards/VCC_GND_F407ZG/mpconfigboard.h

@@ -0,0 +1,182 @@
+/* This file is part of the MicroPython project, http://micropython.org/
+ * MIT License; Copyright (c) 2021 Damien P. George
+ */
+
+// STM32F407ZGT6 Mini by VCC-GND Studio
+// http://vcc-gnd.com/
+// https://item.taobao.com/item.htm?ft=t&id=523383164199
+// https://www.aliexpress.com/wholesale?SearchText=STM32F407ZGT6+Mini
+
+// DFU mode can be accessed by switching BOOT0 DIP ON (towards USB)
+
+#define MICROPY_HW_BOARD_NAME       "VCC-GND STM32F407ZG"
+#define MICROPY_HW_MCU_NAME         "STM32F407ZG"
+#define MICROPY_HW_FLASH_FS_LABEL   "VCCGNDF407ZG"
+
+// 1 = use internal flash (1 MByte)
+// 0 = use onboard SPI flash (512 KByte) Winbond W25X40
+#define MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE (0)
+
+#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)
+#define MICROPY_HW_ENABLE_SDCARD    (1)
+
+// HSE is 25MHz
+#define MICROPY_HW_CLK_PLLM (25)            // divide external clock by this to get 1MHz
+#define MICROPY_HW_CLK_PLLN (336)           // PLL clock in MHz
+#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2) // divide PLL clock by this to get core clock
+#define MICROPY_HW_CLK_PLLQ (7)             // divide core clock by this to get 48MHz
+
+// The board has a 32kHz crystal for the RTC
+#define MICROPY_HW_RTC_USE_LSE      (1)
+#define MICROPY_HW_RTC_USE_US       (0)
+// #define MICROPY_HW_RTC_USE_CALOUT   (1)  // turn on/off PC13 512Hz output
+
+// USART1
+#define MICROPY_HW_UART1_TX     (pin_A9)   // PA9,PB6
+#define MICROPY_HW_UART1_RX     (pin_A10)  // PA10,PB7
+#define MICROPY_HW_UART1_RTS    (pin_A12)
+#define MICROPY_HW_UART1_CTS    (pin_A11)
+// USART1_CK  PA8
+
+// USART2
+#define MICROPY_HW_UART2_TX     (pin_A2)  // PA2,PD5
+#define MICROPY_HW_UART2_RX     (pin_A3)  // PA3,PD6
+#define MICROPY_HW_UART2_RTS    (pin_A1)  // PA1,PD4
+#define MICROPY_HW_UART2_CTS    (pin_A0)  // PA0,PD3
+// USART2_CK  PA4,PD7
+
+// USART3
+#define MICROPY_HW_UART3_TX     (pin_D8)  // PB10,PC10,PD8
+#define MICROPY_HW_UART3_RX     (pin_D9)  // PB11,PC11,PD9
+#define MICROPY_HW_UART3_RTS    (pin_D12) // PB14,PD12
+#define MICROPY_HW_UART3_CTS    (pin_D11) // PB13,PD11
+// USART3_CK  PB12,PC12,PD10
+
+// UART4
+#define MICROPY_HW_UART4_TX     (pin_A0)  // PA0,PC10
+#define MICROPY_HW_UART4_RX     (pin_A1)  // PA1,PC11
+
+// UART5
+#define MICROPY_HW_UART5_TX     (pin_C12) // PC12
+#define MICROPY_HW_UART5_RX     (pin_D2)  // PD2
+
+// USART6
+#define MICROPY_HW_UART6_TX     (pin_C6)  // PC6,PG14
+#define MICROPY_HW_UART6_RX     (pin_C7)  // PC7,PG9
+#define MICROPY_HW_UART6_RTS    (pin_G8)  // PG8,PG12
+#define MICROPY_HW_UART6_CTS    (pin_G13) // PG13,PG15
+// USART6_CK  PC8,PG7
+
+// I2C buses
+#define MICROPY_HW_I2C1_SCL     (pin_B6)  // PB8,PB6
+#define MICROPY_HW_I2C1_SDA     (pin_B7)  // PB9,PB7
+// I2C1_SMBA  PB5
+#define MICROPY_HW_I2C2_SCL     (pin_B10) // PB10,PF1
+#define MICROPY_HW_I2C2_SDA     (pin_B11) // PB11,PF0
+// I2C2_SMBA  PB12,PF2
+#define MICROPY_HW_I2C3_SCL     (pin_A8)  // PA8
+#define MICROPY_HW_I2C3_SDA     (pin_C9)  // PC9
+// I2C3_SMBA  PA9
+
+// AT24C08 EEPROM on I2C1 0x50-0x53
+
+// I2S buses - multiplexed with SPI2 and SPI3
+// I2S2_CK  PB10,PB13
+// I2S2_MCK PC6
+// I2S2_SD  PB15,PC3
+// I2S2_WS  PB9,PB12
+// I2S3_CK  PB3,PC10
+// I2S3_MCK PC7
+// I2S3_SD  PB5,PC12
+// I2S3_WS  PA4,PA15
+
+// SPI buses
+#define MICROPY_HW_SPI1_NSS     (pin_A4)  // PA4,PA15
+#define MICROPY_HW_SPI1_SCK     (pin_A5)  // PA5,PB3
+#define MICROPY_HW_SPI1_MISO    (pin_A6)  // PA6,PB4
+#define MICROPY_HW_SPI1_MOSI    (pin_A7)  // PA7,PB5
+
+#define MICROPY_HW_SPI2_NSS     (pin_B12) // PB12,PB9
+#define MICROPY_HW_SPI2_SCK     (pin_B13) // PB13,PB10
+#define MICROPY_HW_SPI2_MISO    (pin_B14) // PB14,PC2
+#define MICROPY_HW_SPI2_MOSI    (pin_B15) // PB15,PC3
+
+#define MICROPY_HW_SPI3_NSS     (pin_A15) // PA15,PA4
+#define MICROPY_HW_SPI3_SCK     (pin_B3)  // PB3,PC10
+#define MICROPY_HW_SPI3_MISO    (pin_B4)  // PB4,PC11
+#define MICROPY_HW_SPI3_MOSI    (pin_B5)  // PB5,PC12
+
+// CAN buses
+#define MICROPY_HW_CAN1_TX      (pin_B9)  // PB9,PD1,PA12
+#define MICROPY_HW_CAN1_RX      (pin_B8)  // PB8,PD0,PA11
+#define MICROPY_HW_CAN2_TX      (pin_B13) // PB13,PB6
+#define MICROPY_HW_CAN2_RX      (pin_B12) // PB12,PB5
+
+// DAC
+// DAC_OUT1 PA4
+// DAC_OUT2 PA5
+
+// LEDs
+#define MICROPY_HW_LED1         (pin_G15) // blue
+#define MICROPY_HW_LED_ON(pin)  (mp_hal_pin_low(pin))
+#define MICROPY_HW_LED_OFF(pin) (mp_hal_pin_high(pin))
+
+// If using onboard SPI flash
+#if !MICROPY_HW_ENABLE_INTERNAL_FLASH_STORAGE
+
+// W25X40 SPI Flash = 4 Mbit (512 KByte)
+#define MICROPY_HW_SPIFLASH_SIZE_BITS (4 * 1024 * 1024)
+#define MICROPY_HW_SPIFLASH_CS      (pin_C4)
+#define MICROPY_HW_SPIFLASH_SCK     (pin_A5)
+#define MICROPY_HW_SPIFLASH_MISO    (pin_A6)
+#define MICROPY_HW_SPIFLASH_MOSI    (pin_A7)
+
+#define MICROPY_BOARD_EARLY_INIT    VCC_GND_F407ZG_board_early_init
+void VCC_GND_F407ZG_board_early_init(void);
+
+extern const struct _mp_spiflash_config_t spiflash_config;
+extern struct _spi_bdev_t spi_bdev;
+#define MICROPY_HW_BDEV_IOCTL(op, arg) ( \
+    (op) == BDEV_IOCTL_NUM_BLOCKS ? (MICROPY_HW_SPIFLASH_SIZE_BITS / 8 / FLASH_BLOCK_SIZE) : \
+    (op) == BDEV_IOCTL_INIT ? spi_bdev_ioctl(&spi_bdev, (op), (uint32_t)&spiflash_config) : \
+    spi_bdev_ioctl(&spi_bdev, (op), (arg)) \
+)
+#define MICROPY_HW_BDEV_READBLOCKS(dest, bl, n) spi_bdev_readblocks(&spi_bdev, (dest), (bl), (n))
+#define MICROPY_HW_BDEV_WRITEBLOCKS(src, bl, n) spi_bdev_writeblocks(&spi_bdev, (src), (bl), (n))
+
+#endif
+
+// SD card detect switch
+#define MICROPY_HW_SDCARD_DETECT_PIN        (pin_F10)
+#define MICROPY_HW_SDCARD_DETECT_PULL       (GPIO_PULLUP)
+#define MICROPY_HW_SDCARD_DETECT_PRESENT    (GPIO_PIN_RESET)
+// 1      - PC10 - DAT2/RES
+// 2      - PC11 - CD/DAT3/CS
+// 3      - PD2  - CMD/DI
+// 4      - VCC  - VDD
+// 5      - PC12 - CLK/SCLK
+// 6      - GND  - VSS
+// 7      - PC8  - DAT0/D0
+// 8      - PC9  - DAT1/RES
+// 9  SW2 - GND
+// 10 SW1 - PF10
+
+// USB config
+#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_B11)
+#define MICROPY_HW_ETH_RMII_TXD0    (pin_B12)
+#define MICROPY_HW_ETH_RMII_TXD1    (pin_B13)

ports/stm32/boards/VCC_GND_F407ZG/mpconfigboard.mk

@@ -0,0 +1,10 @@
+MCU_SERIES = f4
+CMSIS_MCU = STM32F407xx
+AF_FILE = boards/stm32f405_af.csv
+LD_FILES = boards/stm32f405.ld boards/common_ifs.ld
+TEXT0_ADDR = 0x08000000
+TEXT1_ADDR = 0x08020000
+
+MICROPY_PY_LWIP = 1
+MICROPY_PY_USSL = 1
+MICROPY_SSL_MBEDTLS = 1

ports/stm32/boards/VCC_GND_F407ZG/pins.csv

@@ -0,0 +1,157 @@
+P1_1,GND
+P1_2,GND
+P1_3,VBAT
+P1_4,VCC_3V3
+P1_5,VIN_5V
+P1_6,VIN_5V
+P1_7,PF2
+P1_8,PF3
+P1_9,PF4
+P1_10,PF5
+P1_11,PF6
+P1_12,PF7
+P1_13,PF8
+P1_14,PF9
+P1_15,PF10
+P1_16,PC0
+P1_17,PC1
+P1_18,PC2
+P1_19,PC3
+P1_20,PA0
+P1_21,PA1
+P1_22,PA2
+P1_23,PA3
+P1_24,PA4
+P1_25,PA5
+P1_26,PA6
+P1_27,PA7
+P1_28,PC4
+P1_29,PC5
+P1_30,PB0
+P1_31,PB1
+P1_32,PB2
+P1_33,PF11
+P1_34,PF12
+P1_35,PF13
+P1_36,PF14
+P1_37,PF15
+P1_38,PG0
+P1_39,PG1
+P1_40,PE7
+P1_41,PE8
+P1_42,PE9
+P1_43,GND
+P1_44,GND
+P2_1,PG7
+P2_2,PG6
+P2_3,PG5
+P2_4,PG4
+P2_5,PG3
+P2_6,PG2
+P2_7,PD15
+P2_8,PD14
+P2_9,PD13
+P2_10,PD12
+P2_11,PD11
+P2_12,PD10
+P2_13,PD9
+P2_14,PD8
+P2_15,PB15
+P2_16,PB14
+P2_17,PB13
+P2_18,PB12
+P2_19,PB11
+P2_20,PB10
+P2_21,PE15
+P2_22,PE14
+P2_23,PE13
+P2_24,PE12
+P2_25,PE11
+P2_26,PE10
+P3_1,PF1
+P3_2,PF0
+P3_3,PC15
+P3_4,PC14
+P3_5,PC13
+P3_6,PE6
+P3_7,PE5
+P3_8,PE4
+P3_9,PE3
+P3_10,PE2
+P3_11,PE1
+P3_12,PE0
+P4_1,GND
+P4_2,GND
+P4_3,VCC_3V3
+P4_4,VCC_3V3
+P4_5,PB9
+P4_6,PB8
+P4_7,PB7
+P4_8,PB6
+P4_9,PB5
+P4_10,PB4
+P4_11,PB3
+P4_12,PG15
+P4_13,PG14
+P4_14,PG13
+P4_15,PG12
+P4_16,PG11
+P4_17,PG10
+P4_18,PG9
+P4_19,PD7
+P4_20,PD6
+P4_21,PD5
+P4_22,PD4
+P4_23,PD3
+P4_24,PD2
+P4_25,PD1
+P4_26,PD0
+P4_27,PC12
+P4_28,PC11
+P4_29,PC10
+P4_30,PA15
+P4_31,PA14
+P4_32,PA13
+P4_33,PA12
+P4_34,PA11
+P4_35,PA10
+P4_36,PA9
+P4_37,PA8
+P4_38,PC9
+P4_39,PC8
+P4_40,PC7
+P4_41,PC6
+P4_42,PG8
+P4_43,GND
+P4_44,GND
+DAC1,PA4
+DAC2,PA5
+SRAM_CS,PG10
+SF_CS,PB12
+BLUE_LED,PG15
+BOOT1,PB2
+USB_VBUS,PA9
+USB_ID,PA10
+USB_DM,PA11
+USB_DP,PA12
+SWCLK,PA14
+SWDIO,PA13
+OSC32_IN,PC14
+OSC32_OUT,PC15
+SD_D0,PC8
+SD_D1,PC9
+SD_D2,PC10
+SD_D3,PC11
+SD_CK,PC12
+SD_CMD,PD2
+SD,PF10
+SD_SW,PF10
+ETH_MDC,PC1
+ETH_MDIO,PA2
+ETH_RMII_REF_CLK,PA1
+ETH_RMII_CRS_DV,PA7
+ETH_RMII_RXD0,PC4
+ETH_RMII_RXD1,PC5
+ETH_RMII_TX_EN,PB11
+ETH_RMII_TXD0,PB12
+ETH_RMII_TXD1,PB13