203 lines
4.3 KiB
C
203 lines
4.3 KiB
C
/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
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/*-----------------------------------------------------------------------*/
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/* This is a stub disk I/O module that acts as front end of the existing */
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/* disk I/O modules and attach it to FatFs module with common interface. */
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/*-----------------------------------------------------------------------*/
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#include "diskio.h"
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/*-----------------------------------------------------------------------*/
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/* Correspondence between physical drive number and physical drive. */
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#define ATA 0
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#define MMC 1
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#define USB 2
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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DSTATUS disk_initialize (
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BYTE drv /* Physical drive nmuber (0..) */
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)
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{
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DSTATUS stat;
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int result;
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switch (drv) {
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case ATA :
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result = ATA_disk_initialize();
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// translate the reslut code here
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return stat;
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case MMC :
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result = MMC_disk_initialize();
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// translate the reslut code here
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return stat;
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case USB :
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result = USB_disk_initialize();
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// translate the reslut code here
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return stat;
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}
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return STA_NOINIT;
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}
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/*-----------------------------------------------------------------------*/
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/* Return Disk Status */
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DSTATUS disk_status (
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BYTE drv /* Physical drive nmuber (0..) */
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)
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{
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DSTATUS stat;
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int result;
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switch (drv) {
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case ATA :
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result = ATA_disk_status();
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// translate the reslut code here
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return stat;
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case MMC :
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result = MMC_disk_status();
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// translate the reslut code here
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return stat;
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case USB :
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result = USB_disk_status();
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// translate the reslut code here
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return stat;
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}
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return STA_NOINIT;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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DRESULT disk_read (
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BYTE drv, /* Physical drive nmuber (0..) */
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BYTE *buff, /* Data buffer to store read data */
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DWORD sector, /* Sector address (LBA) */
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BYTE count /* Number of sectors to read (1..255) */
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)
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{
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DRESULT res;
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int result;
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switch (drv) {
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case ATA :
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result = ATA_disk_read(buff, sector, count);
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// translate the reslut code here
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return res;
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case MMC :
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result = MMC_disk_read(buff, sector, count);
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// translate the reslut code here
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return res;
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case USB :
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result = USB_disk_read(buff, sector, count);
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// translate the reslut code here
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return res;
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}
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return RES_PARERR;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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#if _READONLY == 0
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DRESULT disk_write (
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BYTE drv, /* Physical drive nmuber (0..) */
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const BYTE *buff, /* Data to be written */
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DWORD sector, /* Sector address (LBA) */
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BYTE count /* Number of sectors to write (1..255) */
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)
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{
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DRESULT res;
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int result;
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switch (drv) {
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case ATA :
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result = ATA_disk_write(buff, sector, count);
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// translate the reslut code here
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return res;
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case MMC :
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result = MMC_disk_write(buff, sector, count);
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// translate the reslut code here
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return res;
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case USB :
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result = USB_disk_write(buff, sector, count);
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// translate the reslut code here
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return res;
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}
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return RES_PARERR;
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}
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#endif /* _READONLY */
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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DRESULT disk_ioctl (
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BYTE drv, /* Physical drive nmuber (0..) */
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BYTE ctrl, /* Control code */
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void *buff /* Buffer to send/receive control data */
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)
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{
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DRESULT res;
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int result;
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switch (drv) {
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case ATA :
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// pre-process here
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result = ATA_disk_ioctl(ctrl, buff);
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// post-process here
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return res;
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case MMC :
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// pre-process here
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result = MMC_disk_ioctl(ctrl, buff);
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// post-process here
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return res;
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case USB :
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// pre-process here
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result = USB_disk_ioctl(ctrl, buff);
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// post-process here
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return res;
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}
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return RES_PARERR;
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}
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