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/*-----------------------------------------------------------------------*/
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/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2014 */
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/*-----------------------------------------------------------------------*/
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/* If a working storage control module is available, it should be */
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/* attached to the FatFs via a glue function rather than modifying it. */
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/* This is an example of glue functions to attach various exsisting */
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/* storage control modules to the FatFs module with a defined API. */
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/*-----------------------------------------------------------------------*/
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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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/*-----------------------------------------------------------------------*/
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/* Get Drive Status */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_status (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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debug_if(FFS_DBG, "disk_status on pdrv [%d]\n", pdrv);
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return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_status();
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}
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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/*-----------------------------------------------------------------------*/
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DSTATUS disk_initialize (
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BYTE pdrv /* Physical drive nmuber to identify the drive */
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)
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{
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debug_if(FFS_DBG, "disk_initialize on pdrv [%d]\n", pdrv);
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return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_initialize();
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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/*-----------------------------------------------------------------------*/
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DRESULT disk_read (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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BYTE* buff, /* Data buffer to store read data */
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DWORD sector, /* Sector address in LBA */
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UINT count /* Number of sectors to read */
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)
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{
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debug_if(FFS_DBG, "disk_read(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv);
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if (FATFileSystem::_ffs[pdrv]->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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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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/*-----------------------------------------------------------------------*/
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#if _USE_WRITE
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DRESULT disk_write (
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BYTE pdrv, /* Physical drive nmuber to identify the drive */
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const BYTE* buff, /* Data to be written */
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DWORD sector, /* Sector address in LBA */
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UINT count /* Number of sectors to write */
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)
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{
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debug_if(FFS_DBG, "disk_write(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv);
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if (FATFileSystem::_ffs[pdrv]->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
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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/*-----------------------------------------------------------------------*/
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#if _USE_IOCTL
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DRESULT disk_ioctl (
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BYTE pdrv, /* Physical drive nmuber (0..) */
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BYTE cmd, /* 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", cmd);
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switch(cmd) {
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case CTRL_SYNC:
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if(FATFileSystem::_ffs[pdrv] == NULL) {
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return RES_NOTRDY;
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} else if(FATFileSystem::_ffs[pdrv]->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[pdrv] == NULL) {
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return RES_NOTRDY;
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} else {
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DWORD res = FATFileSystem::_ffs[pdrv]->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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#endif
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