SPI SD卡初始化失败

发布于 2019-03-30 02:11:16 浏览：3252 订阅该版

stm32f103c8，使用的spi外挂的sd卡，进行mkfs的时候就报初始化失败，请教应该如何继续排查问题？
代码：
```c
static int rt_hw_spi2_sdcard(void)
{
    __HAL_RCC_GPIOB_CLK_ENABLE();
    rt_hw_spi_device_attach("spi2", "spi20", GPIOB, GET_PIN(B, 12));
    return (int) msd_init("sd0", "spi20");
}
INIT_DEVICE_EXPORT(rt_hw_spi2_sdcard);
```

打印：
```
msh />
\ | /
- RT -     Thread Operating System
/ | \     4.0.1 build Mar 30 2019
2006 - 2019 Copyright by rt-thread team
msh />list_device
device           type         ref count
-------- -------------------- ----------
sd0      Block Device         0      
spi20    SPI Device           0      
spi2     SPI Bus              0      
spi1     SPI Bus              0      
uart1    Character Device     2      
pin      Miscellaneous Device 0      
msh />mkfs -t elm sd0
[MSD] 10931 [err] wait ready timeout!
[MSD] 11935 [err] wait ready timeout!
[MSD] 12939 [err] wait ready timeout!
[MSD] 12943 [err] SD card goto IDLE mode timeout!
To initialize device:sd0 failed. The error code is 2
format error
mkfs failed, result=-5
msh />
```