disk_write

The disk_write writes sector(s) to the disk.

DRESULT disk_write (
  BYTE Drive,          /* Physical drive number */
  const BYTE* Buffer,  /* Pointer to the write data (may be non aligned) */
  DWORD SectorNumber,  /* Sector number to write */
  BYTE SectorCount     /* Number of sectors to write */
);

Parameters

Drive

Specifies the physical drive number.

Buffer

Pointer to the byte array to be written. The memory address specified by upper layer may or may not be aligned to word boundary.

SectorNumber

Specifies the start sector number in logical block address (LBA).

SectorCount

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

Return Values

RES_OK (0)

The function succeeded.

RES_ERROR

Any hard error occured during the write operation and could not recover it.

RES_WRPRT

The medium is write protected.

RES_PARERR

Invalid parameter.

RES_NOTRDY

The disk drive has not been initialized.

Description

This function is not required in read only configuration.