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/*-----------------------------------------------------------------------*/
/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2016 */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be */
/* attached to the FatFs via a glue function rather than modifying it. */
/* This is an example of glue functions to attach various exsisting */
/* storage control modules to the FatFs module with a defined API. */
/*-----------------------------------------------------------------------*/
#include "diskio.h" /* FatFs lower layer API */
/* Definitions of physical drive number for each drive */
#define DEV_RAM 0 /* Example: Map Ramdisk to physical drive 0 */
#define DEV_MMC 1 /* Example: Map MMC/SD card to physical drive 1 */
#define DEV_USB 2 /* Example: Map USB MSD to physical drive 2 */
/*-----------------------------------------------------------------------*/
/* Get Drive Status */
/*-----------------------------------------------------------------------*/
DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat;
int result;
switch (pdrv) {
case DEV_RAM :
result = RAM_disk_status();
// translate the reslut code here
return stat;
case DEV_MMC :
result = MMC_disk_status();
// translate the reslut code here
return stat;
case DEV_USB :
result = USB_disk_status();
// translate the reslut code here
return stat;
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber to identify the drive */
)
{
DSTATUS stat;
int result;
switch (pdrv) {
case DEV_RAM :
result = RAM_disk_initialize();
// translate the reslut code here
return stat;
case DEV_MMC :
result = MMC_disk_initialize();
// translate the reslut code here
return stat;
case DEV_USB :
result = USB_disk_initialize();
// translate the reslut code here
return stat;
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to read */
)
{
DRESULT res;
int result;
switch (pdrv) {
case DEV_RAM :
// translate the arguments here
result = RAM_disk_read(buff, sector, count);
// translate the reslut code here
return res;
case DEV_MMC :
// translate the arguments here
result = MMC_disk_read(buff, sector, count);
// translate the reslut code here
return res;
case DEV_USB :
// translate the arguments here
result = USB_disk_read(buff, sector, count);
// translate the reslut code here
return res;
}
return RES_PARERR;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber to identify the drive */
const BYTE *buff, /* Data to be written */
DWORD sector, /* Start sector in LBA */
UINT count /* Number of sectors to write */
)
{
DRESULT res;
int result;
switch (pdrv) {
case DEV_RAM :
// translate the arguments here
result = RAM_disk_write(buff, sector, count);
// translate the reslut code here
return res;
case DEV_MMC :
// translate the arguments here
result = MMC_disk_write(buff, sector, count);
// translate the reslut code here
return res;
case DEV_USB :
// translate the arguments here
result = USB_disk_write(buff, sector, count);
// translate the reslut code here
return res;
}
return RES_PARERR;
}
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
/*-----------------------------------------------------------------------*/
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT res;
int result;
switch (pdrv) {
case DEV_RAM :
// Process of the command for the RAM drive
return res;
case DEV_MMC :
// Process of the command for the MMC/SD card
return res;
case DEV_USB :
// Process of the command the USB drive
return res;
}
return RES_PARERR;
}
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