SPI挂载SD卡挂载失败

发布于 2023-07-24 17:14:34 浏览：603 订阅该版

大佬们请教下问题，SPI挂载SD卡
使用RT-Thread studio软件，STM32F407VET6的MCU，SPI1挂载SD卡，引脚定义如下：

![screenshot_image.png](https://oss-club.rt-thread.org/uploads/20230725/22b7070b65b5c1b7f51c725076f3a059.png)
list_device查询后，可以看到sd0已经注册为块设备，但是提示初始化设备sd0失败，不知道那里的问题？
查找了一下错误代码2是调用rt_device_init和rt_device_open函数时，返回结果为2
```c
 \ | /
- RT -     Thread Operating System
 / | \     4.1.1 build Jul 24 2023 17:06:10
 2006 - 2022 Copyright by RT-Thread team
msh />To initialize device:sd0 failed. The error code is 2
format error, result=1
To initialize device:sd0 failed. The error code is 2
dfs mount failed

list_device
device           type         ref count
-------- -------------------- ----------
sd0      Block Device         0       
spi10    SPI Device           0       
spi1     SPI Bus              0       
uart1    Character Device     2       
pin      Pin Device           0       
msh />
msh />
```

board.c添加如下函数：

```c
void HAL_SPI_MspInit(SPI_HandleTypeDef* hspi)
{
  GPIO_InitTypeDef GPIO_InitStruct = {0};
  if(hspi->Instance==SPI1)
  {
  /* USER CODE BEGIN SPI1_MspInit 0 */

/* USER CODE END SPI1_MspInit 0 */
    /* Peripheral clock enable */
    __HAL_RCC_SPI1_CLK_ENABLE();

__HAL_RCC_GPIOA_CLK_ENABLE();
    __HAL_RCC_GPIOB_CLK_ENABLE();
    /**SPI1 GPIO Configuration
    PA5     ------> SPI1_SCK
    PA6     ------> SPI1_MISO
    PA15     ------> SPI1_NSS
    PB5     ------> SPI1_MOSI
    */
    GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_15;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

GPIO_InitStruct.Pin = GPIO_PIN_5;
    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
    GPIO_InitStruct.Alternate = GPIO_AF5_SPI1;
    HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

/* USER CODE BEGIN SPI1_MspInit 1 */

/* USER CODE END SPI1_MspInit 1 */
  }

}
static int rt_hw_spi1_tfcard(void)
{
    __HAL_RCC_GPIOA_CLK_ENABLE();
    rt_hw_spi_device_attach("spi1", "spi10",GPIOA,GPIO_PIN_15);
    return msd_init("sd0", "spi10");;
}
INIT_DEVICE_EXPORT(rt_hw_spi1_tfcard) ;
```

主程序如下：

```c
    dfs_mkfs("elm","sd0");//挂在前需格式化
    if(dfs_mount("sd0","/","elm",0,0)==0) //挂载文件系统，参数：块设备名称、挂载目录、文件系统类型、读写标志、私有数据0
    {
        rt_kprintf("dfs mount success\r\n");
    }
    else
    {
        rt_kprintf("dfs mount failed\r\n");
    }
```