fat_getFreeBytes() liefert immer nur 0

// schalter die den funktionsumfang aendern bzw, den funktionsumfang einiger funktionen :)

#define MMC_WRITE                   TRUE

#define MMC_OVER_WRITE              TRUE

#define MMC_MULTI_BLOCK             FALSE

#define MMC_ENDIANNESS_LITTLE       TRUE

#define MMC_LFN_SUPPORT             TRUE

#define MMC_RM_FILES_ONLY           TRUE

// schalter die explizit funktionen mit kompilieren oder nicht!

#define MMC_TIME_STAMP              TRUE

#define MMC_RM                      FALSE

#define MMC_SEEK                    TRUE

#define MMC_MKDIR                   TRUE

#define MMC_GET_FREE_BYTES          TRUE

#define MMC_LS                      FALSE

#define MMC_CD                      TRUE

#define MMC_FILE_EXSISTS            TRUE

#define MMC_WRITE_STRING            TRUE

#define MMC_WRITEN                  FALSE

char      puffer[25]; // 20+1 needed

uint64_t nFree = 0;

CountDown.sec.MMC_Timer = 3;

while ((CountDown.sec.MMC_Timer > 0) && (FALSE == bInitDone))

{

  bInitDone = mmc_init();

}

// Could the MMC card be initialized, or occurred a TimeOut

if (FALSE == bInitDone)

{

  SignalErrorCode(ERROR_CODE_MMC_NOT_INITIALIZED);

  while (1) {;}

}

// Try to load FAT file system

if(FALSE == fat_loadFatData())

{

  SignalErrorCode(ERROR_CODE_FAT_NOT_LOADED);

  while (1) {;}

}

nFree = fat_getFreeBytes();

uint64toa( nFree, puffer, 10 );

uart_puts("Freie Bytes: ");

uart_puts(puffer);

while(1)  {;}