The f_findnext function searches for a next matched object
FRESULT f_findnext ( DIR* dp, /* [IN] Poninter to the directory object */ FILINFO* fno /* [OUT] Pointer to the file information structure */ );
FR_OK, FR_DISK_ERR, FR_INT_ERR, FR_NOT_READY, FR_INVALID_OBJECT, FR_TIMEOUT, FR_NOT_ENOUGH_CORE
It continues the search from a previous call to the f_findfirst or f_findnext function. If found, the information about the object is stored into the file information structure. If no item to be read, a null string will be returned into fno->fname[].
This is a wrapper function of f_readdir function. Available when _USE_FIND == 1 and _FS_MINIMIZE <= 1.