SDIO总线 SD卡_TF卡

5 SDIO设备SD卡注册问题？

发布于 2023-11-07 22:59:32 浏览：754 订阅该版

按照《RT-Thread设备驱动开发指南》书中的SDIO设备驱动开发章节要求完成了底层驱动开发。最后调用的函数为：

```c
int rt_hw_sdio_init(void)
{
    struct stm32_sdio_des sdio_des;
    SD_HandleTypeDef hsd;
    hsd.Instance = SDCARD_INSTANCE;
    {
        rt_uint32_t tmpreg = 0x00U;
#if defined(SOC_SERIES_STM32F1)
        /* enable DMA clock && Delay after an RCC peripheral clock enabling*/
        SET_BIT(RCC->AHBENR, sdio_config.dma_rx.dma_rcc);
        tmpreg = READ_BIT(RCC->AHBENR, sdio_config.dma_rx.dma_rcc);
#elif defined(SOC_SERIES_STM32F4) || defined(SOC_SERIES_STM32F7) || defined(SOC_SERIES_STM32L4) || defined(SOC_SERIES_STM32F2)
        SET_BIT(RCC->AHB1ENR, sdio_config.dma_rx.dma_rcc);
        /* Delay after an RCC peripheral clock enabling */
        tmpreg = READ_BIT(RCC->AHB1ENR, sdio_config.dma_rx.dma_rcc);
#endif
        UNUSED(tmpreg); /* To avoid compiler warnings */
    }
    HAL_NVIC_SetPriority(SDIO_IRQn, 2, 0);
    HAL_NVIC_EnableIRQ(SDIO_IRQn);
    HAL_SD_MspInit(&hsd);

sdio_des.clk_get = stm32_sdio_clock_get;
    sdio_des.hw_sdio = (struct stm32_sdio *)SDCARD_INSTANCE;
    sdio_des.rxconfig = DMA_RxConfig;
    sdio_des.txconfig = DMA_TxConfig;

host = sdio_host_create(&sdio_des);
    if (host == RT_NULL)
    {
        LOG_E("host create fail");
        return -1;
    }

return 0;
}
INIT_DEVICE_EXPORT(rt_hw_sdio_init);
```
完成后将代码下载到开发板，也读取到了SD卡的的容量。但是使用list device命令查找sd设备时没有发现？这是怎么回事？是不是还需要额外调用rt_device_register函数进行设备注册？
	求大神解答！！！