Previous

Next

Function USBDiskMediaChanged

USBDiskMediaChanged checks if the medium in a disk drive has been removed or changed:

int USBDiskMediaChanged(RTUDiskData * DeviceData);

Parameters

Device

Pointer to an RTUDiskData structure associated with the desired disk (see USBDiskInitDevice).

return value

RTU_SUCCESS or a negative class specific error code or a standard error code on failure.

The function returns RTU_SUCCESS if the disk is accessible and has not changed since the last call to USBDiskMountDevice. A call to USBDiskMountDevice is required when this function returns anything other than RTU_SUCCESS before further I/O is possible.

It is not mandatory to use this function. Functions USBDiskReadSectors, USBDiskWriteSectors, and USBDiskGetSize will return the same error code as this function when the medium has been removed.

Function USBDiskWriteSectors

Function USBDiskGetSize