disk_status

The disk_status function returns the current disk status.

DSTATUS disk_status (
  BYTE pdrv     /* [IN] Physical drive number */
);

Parameter

pdrv
Physical drive number to identify the target device.

Return Values

The disk status is returned in combination of following flags. FatFs refers only STA_NOINIT and STA_PROTECT.

STA_NOINIT
Indicates that the device is not initialized. This flag is set on system reset, media removal or failure of disk_initialize() function. It is cleared on disk_initialize() function succeeded. Media change that occurs asynchronously must be captured and reflect it to the status flags, or auto-mount feature will not work correctly. When media change detection feature is not supported, application program needs to de-initialize the file system object with f_mount() function after the media change.
STA_NODISK
Indicates that no medium in the drive. This is always cleared on fixed disk drive. Note that FatFs does not refer this flag.
STA_PROTECT
Indicates that the medium is write protected. This is always cleared on the drives without write protect feature. Not valid while no medium in the drive.

Return