Disk IO Driver

Low level disk interface. More...

Detailed Description

Low level disk interface.

Files
file	diskio.h

Enumerations
enum	diskio_result_t {   DISKIO_RES_OK = 0 , DISKIO_RES_ERROR , DISKIO_RES_WRPRT , DISKIO_RES_NOTRDY ,   DISKIO_RES_PARERR }
	Results of Disk Functions. More...
enum	diskio_sta_t { DISKIO_STA_NOINIT = 0x01 , DISKIO_STA_NODISK = 0x02 , DISKIO_STA_PROTECT = 0x04 }
	Disk Status Bits. More...

Functions
void	copy_al2un (unsigned char *dst, const unsigned long *src, int count)
	Copy aligned to unaligned. More...
void	copy_un2al (unsigned long *dst, const unsigned char *src, int count)
	Copy unaligned to aligned. More...

Generic ioctl command (defined for FatFs)
#define	CTRL_SYNC   0
	Flush disk cache (for write functions)
#define	GET_SECTOR_COUNT   1
	Get media size (for only f_mkfs())
#define	GET_SECTOR_SIZE   2
	Get sector size (for multiple sector size (_MAX_SS >= 1024))
#define	GET_BLOCK_SIZE   3
	Get erase block size (for only f_mkfs())
#define	CTRL_ERASE_SECTOR   4
	Force erased a block of sectors (for only _USE_ERASE)

Generic ioctl command
#define	CTRL_POWER   5
	Get/Set power status.
#define	CTRL_LOCK   6
	Lock/Unlock media removal.
#define	CTRL_EJECT   7
	Eject media.

MMC/SDC specific ioctl command
#define	MMC_GET_TYPE   10
	Get card type.
#define	MMC_GET_CSD   11
	Get CSD.
#define	MMC_GET_CID   12
	Get CID.
#define	MMC_GET_OCR   13
	Get OCR.
#define	MMC_GET_SDSTAT   14
	Get SD status.

Enumeration Type Documentation

diskio_result_t

enum diskio_result_t

Results of Disk Functions.

Enumerator
DISKIO_RES_OK	0: Successful
DISKIO_RES_ERROR	1: R/W Error
DISKIO_RES_WRPRT	2: Write Protected
DISKIO_RES_NOTRDY	3: Not Ready
DISKIO_RES_PARERR	4: Invalid Parameter

Definition at line 51 of file diskio.h.

diskio_sta_t

enum diskio_sta_t

Disk Status Bits.

Enumerator
DISKIO_STA_NOINIT	Drive not initialized.
DISKIO_STA_NODISK	No medium in the drive.
DISKIO_STA_PROTECT	Write protected.

Definition at line 62 of file diskio.h.

Function Documentation

copy_al2un()

void copy_al2un	(	unsigned char *	dst,
		const unsigned long *	src,
		int	count
	)

Copy aligned to unaligned.

Parameters

[out]	dst	Pointer to unaligned destination address
[in]	src	Pointer to aligned source address
[in]	count	Number of bytes to copy

copy_un2al()

void copy_un2al	(	unsigned long *	dst,
		const unsigned char *	src,
		int	count
	)

Copy unaligned to aligned.

Parameters

[out]	dst	Pointer to unaligned destination address
[in]	src	Pointer to aligned source address
[in]	count	Number of bytes to copy