95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
/*-----------------------------------------------------------------------*/
|
|
/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
|
|
/*-----------------------------------------------------------------------*/
|
|
/* This is a stub disk I/O module that acts as front end of the existing */
|
|
/* disk I/O modules and attach it to FatFs module with common interface. */
|
|
/*-----------------------------------------------------------------------*/
|
|
#include "ffconf.h"
|
|
#include "diskio.h"
|
|
|
|
#include "mbed_debug.h"
|
|
#include "FATFileSystem.h"
|
|
|
|
using namespace mbed;
|
|
|
|
DSTATUS disk_initialize (
|
|
BYTE drv /* Physical drive nmuber (0..) */
|
|
)
|
|
{
|
|
debug_if(FFS_DBG, "disk_initialize on drv [%d]\n", drv);
|
|
return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize();
|
|
}
|
|
|
|
DSTATUS disk_status (
|
|
BYTE drv /* Physical drive nmuber (0..) */
|
|
)
|
|
{
|
|
debug_if(FFS_DBG, "disk_status on drv [%d]\n", drv);
|
|
return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status();
|
|
}
|
|
|
|
DRESULT disk_read (
|
|
BYTE drv, /* Physical drive nmuber (0..) */
|
|
BYTE *buff, /* Data buffer to store read data */
|
|
DWORD sector, /* Sector address (LBA) */
|
|
BYTE count /* Number of sectors to read (1..255) */
|
|
)
|
|
{
|
|
debug_if(FFS_DBG, "disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv);
|
|
if (FATFileSystem::_ffs[drv]->disk_read((uint8_t*)buff, sector, count))
|
|
return RES_PARERR;
|
|
else
|
|
return RES_OK;
|
|
}
|
|
|
|
#if _READONLY == 0
|
|
DRESULT disk_write (
|
|
BYTE drv, /* Physical drive nmuber (0..) */
|
|
const BYTE *buff, /* Data to be written */
|
|
DWORD sector, /* Sector address (LBA) */
|
|
BYTE count /* Number of sectors to write (1..255) */
|
|
)
|
|
{
|
|
debug_if(FFS_DBG, "disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv);
|
|
if (FATFileSystem::_ffs[drv]->disk_write((uint8_t*)buff, sector, count))
|
|
return RES_PARERR;
|
|
else
|
|
return RES_OK;
|
|
}
|
|
#endif /* _READONLY */
|
|
|
|
DRESULT disk_ioctl (
|
|
BYTE drv, /* Physical drive nmuber (0..) */
|
|
BYTE ctrl, /* Control code */
|
|
void *buff /* Buffer to send/receive control data */
|
|
)
|
|
{
|
|
debug_if(FFS_DBG, "disk_ioctl(%d)\n", ctrl);
|
|
switch(ctrl) {
|
|
case CTRL_SYNC:
|
|
if(FATFileSystem::_ffs[drv] == NULL) {
|
|
return RES_NOTRDY;
|
|
} else if(FATFileSystem::_ffs[drv]->disk_sync()) {
|
|
return RES_ERROR;
|
|
}
|
|
return RES_OK;
|
|
case GET_SECTOR_COUNT:
|
|
if(FATFileSystem::_ffs[drv] == NULL) {
|
|
return RES_NOTRDY;
|
|
} else {
|
|
DWORD res = FATFileSystem::_ffs[drv]->disk_sectors();
|
|
if(res > 0) {
|
|
*((DWORD*)buff) = res; // minimum allowed
|
|
return RES_OK;
|
|
} else {
|
|
return RES_ERROR;
|
|
}
|
|
}
|
|
case GET_BLOCK_SIZE:
|
|
*((DWORD*)buff) = 1; // default when not known
|
|
return RES_OK;
|
|
|
|
}
|
|
return RES_PARERR;
|
|
}
|