Get SD card free space not updating?

[gunar.kroeger]

I am able to read SD card free space by using this function:

Code: Untitled.c Select all

bool SD_getFreeSpace(uint32_t *tot, uint32_t *free)

{

	FATFS *fs;

	DWORD fre_clust, fre_sect, tot_sect;



	/* Get volume information and free clusters of drive 0 */

	if(f_getfree("0:", &fre_clust, &fs) == FR_OK)

	{

		/* Get total sectors and free sectors */

		tot_sect = (fs->n_fatent - 2) * fs->csize;

		fre_sect = fre_clust * fs->csize;



		*tot = tot_sect / 2;

		*free = fre_sect / 2;



		/* Print the free space (assuming 512 bytes/sector) */

		ESP_LOGD(TAG, "%10lu KiB total drive space. %10lu KiB available.", *tot, *free);



		return true;

	}

	return false;

}

But even if I remove the SD card after I mounted the card I still get the same values as before removing the card. Is there a way to get free and total space without unmounting and remounting the SD card? I wish to check at least if the SD card has been removed.
Currently I am opening and closing an empty file to do this.

[pilidfast-mail]

That's the software bug, nothing to do with hardware. Report the issue, next update might (will) solve it.

[gunar.kroeger]

That's the software bug, nothing to do with hardware. Report the issue, next update might (will) solve it.

https://github.com/espressif/esp-idf/issues/3278