然后在之前读取信息的代码之后添加读取数据的代码：
/* 读取未操作之前的数据 */
printf("------------------- Read SD card block data Test ------------------\r\n");
sdcard_status = HAL_SD_ReadBlocks(&hsd1,(uint8_t *)read_buf,0,1,0xffff);
if(sdcard_status == 0)
{
printf("Read block data ok \r\n" );
for(i = 0; i < 512; i++)
{
printf("0x%02x ", read_buf[i]);
if((i+1)%16 == 0)
{
printf("\r\n");
}
}
}
else
{
printf("Read block data fail!\r\n " );
}
| 
楼主
