95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
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/*-----------------------------------------------------------------------*/
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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 "ffconf.h"
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#include "diskio.h"
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#include "mbed_debug.h"
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#include "FATFileSystem.h"
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using namespace mbed;
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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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debug_if(FFS_DBG, "disk_initialize on drv [%d]\n", drv);
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return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize();
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}
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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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debug_if(FFS_DBG, "disk_status on drv [%d]\n", drv);
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return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status();
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}
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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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debug_if(FFS_DBG, "disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv);
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if (FATFileSystem::_ffs[drv]->disk_read((uint8_t*)buff, sector, count))
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return RES_PARERR;
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else
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return RES_OK;
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}
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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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debug_if(FFS_DBG, "disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv);
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if (FATFileSystem::_ffs[drv]->disk_write((uint8_t*)buff, sector, count))
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return RES_PARERR;
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else
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return RES_OK;
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}
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#endif /* _READONLY */
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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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debug_if(FFS_DBG, "disk_ioctl(%d)\n", ctrl);
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switch(ctrl) {
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case CTRL_SYNC:
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if(FATFileSystem::_ffs[drv] == NULL) {
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return RES_NOTRDY;
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} else if(FATFileSystem::_ffs[drv]->disk_sync()) {
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return RES_ERROR;
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}
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return RES_OK;
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case GET_SECTOR_COUNT:
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if(FATFileSystem::_ffs[drv] == NULL) {
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return RES_NOTRDY;
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} else {
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DWORD res = FATFileSystem::_ffs[drv]->disk_sectors();
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if(res > 0) {
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*((DWORD*)buff) = res; // minimum allowed
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return RES_OK;
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} else {
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return RES_ERROR;
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}
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}
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case GET_BLOCK_SIZE:
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*((DWORD*)buff) = 1; // default when not known
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return RES_OK;
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}
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return RES_PARERR;
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}
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