disk_read

The disk_read reads sector(s) from the disk drive.

DRESULT disk_read (
  BYTE* Buffer,        // Pointer to the read buffer.
  DWORD SectorNumber,  // Sector number to read from.
  BYTE SectorCount     // Number of sectros to read.
);

Parameters

Buffer

Pointer to the read buffer to store the read data. SectorCount * 512 bytes is required for the size of the read buffer.

SectorNumber

Specifies the sector number in logical block address to read from.

SectorCount

Specifies number of sectors to read. The value can be 1 to 255.

Return Value

RES_OK

The function succeeded.

RES_ERROR

Any error occured during read operation.

RES_PARERR

Invalid parameter.

RES_NOTRDY

The disk dirve has not been initialized.