c语言查询sd卡mount位置,STM32F103C8T6 读写SD卡 f_mount()返回错误，求助

本帖最后由 benclee 于 2020-4-24 10:06 编辑

用的正点原子的代码

执行f_mount(fs[0],"0:",1)时返回FR_DISK_ERR

跟进去，res = find_volume(&fs, &path, 0)，这里返回1

再跟进去fmt = check_fs(fs, bsect);/* 加载0扇区并检查fat是否是 sfd 引导扇区 */这里返回3

static

BYTE check_fs (        /* 0:FAT boor sector, 1:Valid boor sector but not FAT, 2:Not a boot sector, 3:Disk error */

FATFS* fs,        /* File system object */

DWORD sect        /* Sector# (lba) to check if it is an FAT boot record or not */

)

{

fs->wflag = 0; fs->winsect = 0xFFFFFFFF;        /* Invaidate window */

if (move_window(fs, sect) != FR_OK)                        /* Load boot record */

printf("move_win%d\r\n",(move_window(fs,sect)));//******************************************

return 3;

if (LD_WORD(&fs->win[BS_55AA]) != 0xAA55)        /* Check boot record signature (always placed at offset 510 even if the sector size is >512) */

return 2;

if ((LD_DWORD(&fs->win[BS_FilSysType]) & 0xFFFFFF) == 0x544146)                /* Check "FAT" string */

return 0;

if ((LD_DWORD(&fs->win[BS_FilSysType32]) & 0xFFFFFF) == 0x544146)   &