git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4118 35acf78f-673a-0410-8e92-d51de3d6d3f4
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# FATFS files.
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FATFSSRC = ${CHIBIOS}/various/fatfs_bindings/fatfs_diskio.c \
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${CHIBIOS}/various/fatfs_bindings/fatfs_syscall.c \
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${CHIBIOS}/ext/fatfs/src/ff.c \
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${CHIBIOS}/ext/fatfs/src/option/ccsbcs.c \
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FATFSINC = ${CHIBIOS}/ext/fatfs/src
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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 "ch.h"
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#include "hal.h"
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#include "diskio.h"
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#if HAL_USE_MMC_SPI && HAL_USE_SDC
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#error "cannot specify both MMC_SPI and SDC drivers"
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#endif
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#if HAL_USE_MMC_SPI
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extern MMCDriver MMCD1;
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#elif HAL_USE_SDC
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extern SDCDriver SDCD1;
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#else
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#error "MMC_SPI or SDC driver must be specified"
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#endif
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#if HAL_USE_RTC
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#include "chrtclib.h"
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extern RTCDriver RTCD1;
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#endif
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/*-----------------------------------------------------------------------*/
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/* Correspondence between physical drive number and physical drive. */
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#define MMC 0
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#define SDC 0
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/*-----------------------------------------------------------------------*/
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/* Inidialize a Drive */
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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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DSTATUS stat;
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switch (drv) {
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#if HAL_USE_MMC_SPI
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case MMC:
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stat = 0;
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/* It is initialized externally, just reads the status.*/
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if (mmcGetDriverState(&MMCD1) != MMC_READY)
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stat |= STA_NOINIT;
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if (mmcIsWriteProtected(&MMCD1))
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stat |= STA_PROTECT;
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return stat;
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#else
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case SDC:
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stat = 0;
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/* It is initialized externally, just reads the status.*/
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if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
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stat |= STA_NOINIT;
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if (sdcIsWriteProtected(&SDCD1))
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stat |= STA_PROTECT;
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return stat;
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#endif
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}
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return STA_NODISK;
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}
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/*-----------------------------------------------------------------------*/
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/* Return Disk Status */
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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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DSTATUS stat;
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switch (drv) {
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#if HAL_USE_MMC_SPI
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case MMC:
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stat = 0;
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/* It is initialized externally, just reads the status.*/
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if (mmcGetDriverState(&MMCD1) != MMC_READY)
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stat |= STA_NOINIT;
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if (mmcIsWriteProtected(&MMCD1))
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stat |= STA_PROTECT;
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return stat;
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#else
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case SDC:
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stat = 0;
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/* It is initialized externally, just reads the status.*/
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if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
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stat |= STA_NOINIT;
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if (sdcIsWriteProtected(&SDCD1))
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stat |= STA_PROTECT;
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return stat;
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#endif
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}
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return STA_NODISK;
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}
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/*-----------------------------------------------------------------------*/
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/* Read Sector(s) */
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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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switch (drv) {
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#if HAL_USE_MMC_SPI
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case MMC:
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if (mmcGetDriverState(&MMCD1) != MMC_READY)
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return RES_NOTRDY;
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if (mmcStartSequentialRead(&MMCD1, sector))
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return RES_ERROR;
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while (count > 0) {
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if (mmcSequentialRead(&MMCD1, buff))
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return RES_ERROR;
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buff += MMC_SECTOR_SIZE;
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count--;
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}
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if (mmcStopSequentialRead(&MMCD1))
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return RES_ERROR;
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return RES_OK;
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#else
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case SDC:
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if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
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return RES_NOTRDY;
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if (sdcRead(&SDCD1, sector, buff, count))
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return RES_ERROR;
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return RES_OK;
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#endif
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}
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return RES_PARERR;
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}
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/*-----------------------------------------------------------------------*/
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/* Write Sector(s) */
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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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switch (drv) {
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#if HAL_USE_MMC_SPI
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case MMC:
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if (mmcGetDriverState(&MMCD1) != MMC_READY)
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return RES_NOTRDY;
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if (mmcIsWriteProtected(&MMCD1))
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return RES_WRPRT;
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if (mmcStartSequentialWrite(&MMCD1, sector))
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return RES_ERROR;
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while (count > 0) {
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if (mmcSequentialWrite(&MMCD1, buff))
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return RES_ERROR;
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buff += MMC_SECTOR_SIZE;
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count--;
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}
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if (mmcStopSequentialWrite(&MMCD1))
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return RES_ERROR;
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return RES_OK;
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#else
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case SDC:
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if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
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return RES_NOTRDY;
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if (sdcWrite(&SDCD1, sector, buff, count))
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return RES_ERROR;
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return RES_OK;
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#endif
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}
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return RES_PARERR;
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}
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#endif /* _READONLY */
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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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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switch (drv) {
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#if HAL_USE_MMC_SPI
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case MMC:
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switch (ctrl) {
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case CTRL_SYNC:
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return RES_OK;
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case GET_SECTOR_SIZE:
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*((WORD *)buff) = MMC_SECTOR_SIZE;
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return RES_OK;
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default:
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return RES_PARERR;
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}
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#else
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case SDC:
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switch (ctrl) {
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case CTRL_SYNC:
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return RES_OK;
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case GET_SECTOR_COUNT:
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*((DWORD *)buff) = sdcGetCardCapacity(&SDCD1);
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return RES_OK;
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case GET_SECTOR_SIZE:
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*((WORD *)buff) = SDC_BLOCK_SIZE;
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return RES_OK;
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case GET_BLOCK_SIZE:
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*((DWORD *)buff) = 256; /* 512b blocks in one erase block */
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return RES_OK;
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default:
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return RES_PARERR;
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}
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#endif
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}
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return RES_PARERR;
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}
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DWORD get_fattime(void) {
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#if HAL_USE_RTC
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return rtcGetTimeFat(&RTCD1);
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#else
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return ((uint32_t)0 | (1 << 16)) | (1 << 21); /* wrong but valid time */
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#endif
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}
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/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*------------------------------------------------------------------------*/
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/* Sample code of OS dependent controls for FatFs R0.08b */
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/* (C)ChaN, 2011 */
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/*------------------------------------------------------------------------*/
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#include "ch.h"
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#include "ff.h"
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MEMORYPOOL_DECL(fs_sem_pool, sizeof(Semaphore), chCoreAlloc);
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#if _FS_REENTRANT
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/*------------------------------------------------------------------------*/
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/* Create a Synchronization Object */
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/*------------------------------------------------------------------------*/
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int ff_cre_syncobj(_SYNC_t *sobj) {
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*sobj = chPoolAlloc(&fs_sem_pool);
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if (*sobj == NULL)
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return FALSE;
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chSemInit(*sobj, 1);
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return TRUE;
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}
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/*------------------------------------------------------------------------*/
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/* Delete a Synchronization Object */
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/*------------------------------------------------------------------------*/
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int ff_del_syncobj(_SYNC_t sobj) {
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chSemReset(sobj, 0);
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chPoolFree(&fs_sem_pool, sobj);
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return TRUE;
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}
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/*------------------------------------------------------------------------*/
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/* Request Grant to Access the Volume */
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/*------------------------------------------------------------------------*/
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int ff_req_grant(_SYNC_t sobj) {
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msg_t msg = chSemWaitTimeout(sobj, (systick_t)_FS_TIMEOUT);
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return msg == RDY_OK;
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}
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/*------------------------------------------------------------------------*/
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/* Release Grant to Access the Volume */
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/*------------------------------------------------------------------------*/
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void ff_rel_grant(_SYNC_t sob) {
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chSemSignal(sobj);
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}
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#endif /* _FS_REENTRANT */
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#if _USE_LFN == 3 /* LFN with a working buffer on the heap */
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/*------------------------------------------------------------------------*/
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/* Allocate a memory block */
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/*------------------------------------------------------------------------*/
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void *ff_memalloc(UINT size) {
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return chHeapAlloc(NULL, size);
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}
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/*------------------------------------------------------------------------*/
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/* Free a memory block */
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/*------------------------------------------------------------------------*/
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void ff_memfree(void *mblock) {
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chHeapFree(mblock);
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}
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#endif /* _USE_LFN == 3 */
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@ -0,0 +1,6 @@
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This directory contains the ChibiOS/RT "official" bindings with the FatFS
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library by ChaN: http://elm-chan.org
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In order to use FatFS within ChibiOS/RT project, unzip FatFS under
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./ext/fatfs then include $(CHIBIOS)/os/various/fatfs_bindings/fatfs.mk
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in your makefile.
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