stm32移植fatfs+sd卡到rt thread nano的相关问题

发布于 2021-09-19 22:39:08 浏览：1435 订阅该版

我在移植野火的sd卡程序到裸机可以运行，但是一直到RTT就无法这些，调试显示是SD卡初始化失败，返回了错误3的指令，我查找不到问题，不知道哪里出现了问题，有没有人遇到过并解决了这个问题的麻烦帮助一下，在下先谢谢了。

/*-----------------------------------------------------------------------*/
/* Mount/Unmount a Logical Drive                                         */
/*-----------------------------------------------------------------------*/
FRESULT f_mount (
    FATFS* fs,            /* Pointer to the file system object (NULL:unmount)*/
    const TCHAR* path,    /* Logical drive number to be mounted/unmounted */
    BYTE opt            /* 0:Do not mount (delayed mount), 1:Mount immediately */
)
{
    FATFS *cfs;
    int vol;
    FRESULT res;
    const TCHAR *rp = path;
    vol = get_ldnumber(&rp);
    if (vol < 0) return FR_INVALID_DRIVE;
    cfs = FatFs[vol];                    /* Pointer to fs object */
    if (cfs) {
    #if _FS_LOCK
       clear_lock(cfs);
    #endif
     #if _FS_REENTRANT                        /* Discard sync object of the current 
         volume */
      if (!ff_del_syncobj(cfs->sobj)) return FR_INT_ERR;
    #endif
          cfs->fs_type = 0;                /* Clear old fs object */
    }
    if (fs) {
    fs->fs_type = 0;                /* Clear new fs object */
   #if _FS_REENTRANT                        /* Create sync object for the new volume */
    if (!ff_cre_syncobj((BYTE)vol, &fs->sobj)) return FR_INT_ERR;
   #endif
    }
    FatFs[vol] = fs;                    /* Register new fs object */
    if (!fs || opt != 1) return FR_OK;    /* Do not mount now, it will be mounted later */
    res = find_volume(&fs, &path, 0);    /* Force mounted the volume */
    LEAVE_FF(fs, res);
}