Disk IO Driver

Low level disk interface.

CTRL_SYNC

Flush disk cache (for write functions) 

1
0
GET_SECTOR_COUNT

Get media size (for only f_mkfs()) 

1
1
GET_SECTOR_SIZE

Get sector size (for multiple sector size (_MAX_SS >= 1024)) 

1
2
GET_BLOCK_SIZE

Get erase block size (for only f_mkfs()) 

1
3
CTRL_ERASE_SECTOR

Force erased a block of sectors (for only _USE_ERASE) 

1
4
CTRL_POWER

Get/Set power status. 

1
5
CTRL_LOCK

Lock/Unlock media removal. 

1
6
CTRL_EJECT

Eject media. 

1
7
MMC_GET_TYPE

Get card type. 

1
10
MMC_GET_CSD

Get CSD. 

1
11
MMC_GET_CID

Get CID. 

1
12
MMC_GET_OCR

Get OCR. 

1
13
MMC_GET_SDSTAT

Get SD status. 

1
14
enum diskio_result_t
DISKIO_RES_OK = 0
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
enum diskio_sta_t
DISKIO_STA_NOINIT = 0x01
Drive not initialized.
DISKIO_STA_NODISK = 0x02
No medium in the drive.
DISKIO_STA_PROTECT = 0x04
Write protected.
void copy_al2un(unsigned char * dst, const unsigned long * src, int count)

Copy aligned to unaligned.

Parameters

dst:Pointer to unaligned destination address
src:Pointer to aligned source address
count:Number of bytes to copy

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

Copy unaligned to aligned.

Parameters

dst:Pointer to unaligned destination address
src:Pointer to aligned source address
count:Number of bytes to copy