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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4118 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2012-04-21 17:26:34 +00:00
parent 37f359fbaa
commit 31fa09fa03
4 changed files with 345 additions and 0 deletions
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7
os/various/fatfs_bindings/fatfs.mk Normal file
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# FATFS files.
FATFSSRC = ${CHIBIOS}/various/fatfs_bindings/fatfs_diskio.c \
${CHIBIOS}/various/fatfs_bindings/fatfs_syscall.c \
${CHIBIOS}/ext/fatfs/src/ff.c \
${CHIBIOS}/ext/fatfs/src/option/ccsbcs.c \
FATFSINC = ${CHIBIOS}/ext/fatfs/src

244
os/various/fatfs_bindings/fatfs_diskio.c Normal file
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/*-----------------------------------------------------------------------*/
/* 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 "ch.h"
#include "hal.h"
#include "diskio.h"
#if HAL_USE_MMC_SPI && HAL_USE_SDC
#error "cannot specify both MMC_SPI and SDC drivers"
#endif
#if HAL_USE_MMC_SPI
extern MMCDriver MMCD1;
#elif HAL_USE_SDC
extern SDCDriver SDCD1;
#else
#error "MMC_SPI or SDC driver must be specified"
#endif
#if HAL_USE_RTC
#include "chrtclib.h"
extern RTCDriver RTCD1;
#endif
/*-----------------------------------------------------------------------*/
/* Correspondence between physical drive number and physical drive. */
#define MMC 0
#define SDC 0
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
DSTATUS disk_initialize (
BYTE drv /* Physical drive nmuber (0..) */
)
{
DSTATUS stat;
switch (drv) {
#if HAL_USE_MMC_SPI
case MMC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (mmcGetDriverState(&MMCD1) != MMC_READY)
stat |= STA_NOINIT;
if (mmcIsWriteProtected(&MMCD1))
stat |= STA_PROTECT;
return stat;
#else
case SDC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
stat |= STA_NOINIT;
if (sdcIsWriteProtected(&SDCD1))
stat |= STA_PROTECT;
return stat;
#endif
}
return STA_NODISK;
}
/*-----------------------------------------------------------------------*/
/* Return Disk Status */
DSTATUS disk_status (
BYTE drv /* Physical drive nmuber (0..) */
)
{
DSTATUS stat;
switch (drv) {
#if HAL_USE_MMC_SPI
case MMC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (mmcGetDriverState(&MMCD1) != MMC_READY)
stat |= STA_NOINIT;
if (mmcIsWriteProtected(&MMCD1))
stat |= STA_PROTECT;
return stat;
#else
case SDC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
stat |= STA_NOINIT;
if (sdcIsWriteProtected(&SDCD1))
stat |= STA_PROTECT;
return stat;
#endif
}
return STA_NODISK;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
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) */
)
{
switch (drv) {
#if HAL_USE_MMC_SPI
case MMC:
if (mmcGetDriverState(&MMCD1) != MMC_READY)
return RES_NOTRDY;
if (mmcStartSequentialRead(&MMCD1, sector))
return RES_ERROR;
while (count > 0) {
if (mmcSequentialRead(&MMCD1, buff))
return RES_ERROR;
buff += MMC_SECTOR_SIZE;
count--;
}
if (mmcStopSequentialRead(&MMCD1))
return RES_ERROR;
return RES_OK;
#else
case SDC:
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
return RES_NOTRDY;
if (sdcRead(&SDCD1, sector, buff, count))
return RES_ERROR;
return RES_OK;
#endif
}
return RES_PARERR;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
#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) */
)
{
switch (drv) {
#if HAL_USE_MMC_SPI
case MMC:
if (mmcGetDriverState(&MMCD1) != MMC_READY)
return RES_NOTRDY;
if (mmcIsWriteProtected(&MMCD1))
return RES_WRPRT;
if (mmcStartSequentialWrite(&MMCD1, sector))
return RES_ERROR;
while (count > 0) {
if (mmcSequentialWrite(&MMCD1, buff))
return RES_ERROR;
buff += MMC_SECTOR_SIZE;
count--;
}
if (mmcStopSequentialWrite(&MMCD1))
return RES_ERROR;
return RES_OK;
#else
case SDC:
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
return RES_NOTRDY;
if (sdcWrite(&SDCD1, sector, buff, count))
return RES_ERROR;
return RES_OK;
#endif
}
return RES_PARERR;
}
#endif /* _READONLY */
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
DRESULT disk_ioctl (
BYTE drv, /* Physical drive nmuber (0..) */
BYTE ctrl, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
switch (drv) {
#if HAL_USE_MMC_SPI
case MMC:
switch (ctrl) {
case CTRL_SYNC:
return RES_OK;
case GET_SECTOR_SIZE:
*((WORD *)buff) = MMC_SECTOR_SIZE;
return RES_OK;
default:
return RES_PARERR;
}
#else
case SDC:
switch (ctrl) {
case CTRL_SYNC:
return RES_OK;
case GET_SECTOR_COUNT:
*((DWORD *)buff) = sdcGetCardCapacity(&SDCD1);
return RES_OK;
case GET_SECTOR_SIZE:
*((WORD *)buff) = SDC_BLOCK_SIZE;
return RES_OK;
case GET_BLOCK_SIZE:
*((DWORD *)buff) = 256; /* 512b blocks in one erase block */
return RES_OK;
default:
return RES_PARERR;
}
#endif
}
return RES_PARERR;
}
DWORD get_fattime(void) {
#if HAL_USE_RTC
return rtcGetTimeFat(&RTCD1);
#else
return ((uint32_t)0 | (1 << 16)) | (1 << 21); /* wrong but valid time */
#endif
}

88
os/various/fatfs_bindings/fatfs_syscall.c Normal file
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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*------------------------------------------------------------------------*/
/* Sample code of OS dependent controls for FatFs R0.08b */
/* (C)ChaN, 2011 */
/*------------------------------------------------------------------------*/
#include "ch.h"
#include "ff.h"
MEMORYPOOL_DECL(fs_sem_pool, sizeof(Semaphore), chCoreAlloc);
#if _FS_REENTRANT
/*------------------------------------------------------------------------*/
/* Create a Synchronization Object */
/*------------------------------------------------------------------------*/
int ff_cre_syncobj(_SYNC_t *sobj) {
*sobj = chPoolAlloc(&fs_sem_pool);
if (*sobj == NULL)
return FALSE;
chSemInit(*sobj, 1);
return TRUE;
}
/*------------------------------------------------------------------------*/
/* Delete a Synchronization Object */
/*------------------------------------------------------------------------*/
int ff_del_syncobj(_SYNC_t sobj) {
chSemReset(sobj, 0);
chPoolFree(&fs_sem_pool, sobj);
return TRUE;
}
/*------------------------------------------------------------------------*/
/* Request Grant to Access the Volume */
/*------------------------------------------------------------------------*/
int ff_req_grant(_SYNC_t sobj) {
msg_t msg = chSemWaitTimeout(sobj, (systick_t)_FS_TIMEOUT);
return msg == RDY_OK;
}
/*------------------------------------------------------------------------*/
/* Release Grant to Access the Volume */
/*------------------------------------------------------------------------*/
void ff_rel_grant(_SYNC_t sob) {
chSemSignal(sobj);
}
#endif /* _FS_REENTRANT */
#if _USE_LFN == 3 /* LFN with a working buffer on the heap */
/*------------------------------------------------------------------------*/
/* Allocate a memory block */
/*------------------------------------------------------------------------*/
void *ff_memalloc(UINT size) {
return chHeapAlloc(NULL, size);
}
/*------------------------------------------------------------------------*/
/* Free a memory block */
/*------------------------------------------------------------------------*/
void ff_memfree(void *mblock) {
chHeapFree(mblock);
}
#endif /* _USE_LFN == 3 */

6
os/various/fatfs_bindings/readme.txt Normal file
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This directory contains the ChibiOS/RT "official" bindings with the FatFS
library by ChaN: http://elm-chan.org
In order to use FatFS within ChibiOS/RT project, unzip FatFS under
./ext/fatfs then include $(CHIBIOS)/os/various/fatfs_bindings/fatfs.mk
in your makefile.