记录下为自己的板子编译MicroPython的过程

STM32

1、搭建环境
下载msys2，安装完更新下。具体操作可以百度。记住安装位置，我是直接安装到D盘根目录。
下载gcc-arm-none-eabi，
在homeAdministrator 下建立新目录tools，解压gcc到tools下。用记事本打开.bashrc文件，最后一行添加
export PATH="D:msys32homeAdministratortoolsgcc-arm-none-eabi-7bin"

PATH
保存，重新打开msys2.exe使配置生效。

下载源码。$ git clone --recursive https://github.com/micropython/micropython.git
完成时如下

打开D:msys32homeAdministrator （换成自己的目录）
会多出一个micropython 的文件夹，里面就是所有源码了。

2、移植
打开micropython下 ports/STM32/boards，新建目录F407，拷贝STM32F4DISC下所有文件到F407下。删掉staccel.py。

mpconfigboard.h 中是板子的配置文件，pins.csv 中是引脚定义。
#define MICROPY_HW_BOARD_NAME    "F407"
#define MICROPY_HW_MCU_NAME       "STM32F407"

#define MICROPY_HW_HAS_SWITCH    (1)
#define MICROPY_HW_HAS_FLASH       (1)
#define MICROPY_HW_ENABLE_RNG    (1)
#define MICROPY_HW_ENABLE_RTC    (0)
#define MICROPY_HW_ENABLE_DAC    (1)
#define MICROPY_HW_ENABLE_USB    (1)
#define MICROPY_HW_HAS_SDCARD    (1)

// HSE is 8MHz
#define MICROPY_HW_CLK_PLLM (25)
#define MICROPY_HW_CLK_PLLN (336)
#define MICROPY_HW_CLK_PLLP (RCC_PLLP_DIV2)
#define MICROPY_HW_CLK_PLLQ (7)

// UART config

// A9 is used for USB VBUS detect, and A10 is used for USB_FS_ID.
// UART1 is also on PB6/7 but PB6 is tied to the Audio SCL line.
// Without board modifications, this makes UART1 unusable on this board.
#define MICROPY_HW_UART1_TX    (pin_A9)
#define MICROPY_HW_UART1_RX    (pin_A10)

#define MICROPY_HW_UART2_TX    (pin_A2)
#define MICROPY_HW_UART2_RX    (pin_A3)

#define MICROPY_HW_UART3_TX    (pin_D8)
#define MICROPY_HW_UART3_RX    (pin_D9)

// NOTE: A0 also connects to the user switch. To use UART4 you should
//    set MICROPY_HW_HAS_SWITCH to 0, and also remove SB20 (on the back
//    of the board near the USER switch).
#define MICROPY_HW_UART4_TX    (pin_A0)
#define MICROPY_HW_UART4_RX    (pin_A1)

// NOTE: PC7 is connected to MCLK on the Audio chip. This is an input signal
//    so I think as long as you're not using the audio chip then it should
//    be fine to use as a UART pin.

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

// SPI busses
#define MICROPY_HW_SPI1_NSS  (pin_A4)
#define MICROPY_HW_SPI1_SCK  (pin_A5)
#define MICROPY_HW_SPI1_MISO (pin_A6)
#define MICROPY_HW_SPI1_MOSI (pin_A7)
#define MICROPY_HW_SPI3_NSS  (pin_A15)
#define MICROPY_HW_SPI3_SCK  (pin_B3)
#define MICROPY_HW_SPI3_MISO (pin_B4)
#define MICROPY_HW_SPI3_MOSI (pin_B5)

// CAN busses
#define MICROPY_HW_CAN1_TX (pin_B9)
#define MICROPY_HW_CAN1_RX (pin_B8)

// USRSW is pulled low. Pressing the button makes the input go high.
#define MICROPY_HW_USRSW_PIN       (pin_C0)
#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_E0) // red
#define MICROPY_HW_LED2          (pin_E1) // green
#define MICROPY_HW_LED3          (pin_E2) // orange
#define MICROPY_HW_LED4          (pin_E3) // blue
#define MICROPY_HW_LED_ON(pin)    (mp_hal_pin_low(pin))
#define MICROPY_HW_LED_OFF(pin)    (mp_hal_pin_high(pin))

// USB config
#define MICROPY_HW_USB_FS             (1)
//*************end  mpconfigboard.h

pins.csv 用记事本打开修改。
缺少PB3 ，按格式添加。
最后的LED SW对应mpconfigboard.h 的引脚修改。

接下来是修改sd卡的文件，因为我的板子没有检测sd卡插入引脚。
打开stm32文件夹下的sdcard.c，
注释掉163行引脚初始化。
检测函数直接返回1。

bool sdcard_is_present(void) {
return 1;
//return HAL_GPIO_ReadPin(MICROPY_HW_SDCARD_DETECT_PIN->gpio, MICROPY_HW_SDCARD_DETECT_PIN->pin_mask) == MICROPY_HW_SDCARD_DETECT_PRESENT;
}

modules下有几个py文件，是软连接的，msys2下有问题。从micropythondrivers 下复制对应的文件覆盖掉。

3、编译
msys2 进入到ports/stm32目录，执行 make BOARD=F407

王建昌 · 2018-8-12 17:21:55

谢谢楼主。不错，非常好，谢谢分享

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记录下为自己的板子编译MicroPython的过程

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