Added contributed FatFS code, thanks Eddie.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7008 35acf78f-673a-0410-8e92-d51de3d6d3f4
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All the code contained under ./os/ext is not part of the ChibiOS project and
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supplied as-is without any additional warranty by ChibiOS. For ownership and
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copyright statements see the license details inside the code.
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Some modules may contain changes from the ChibiOS team in order to increase
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compatibility or usability with ChibiOS itself.
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# FATFS files.
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FATFSSRC = ${CHIBIOS}/os/various/fatfs_bindings/fatfs_diskio.c \
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${CHIBIOS}/os/various/fatfs_bindings/fatfs_syscall.c \
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${CHIBIOS}/os/ext/fatfs/src/ff.c \
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${CHIBIOS}/os/ext/fatfs/src/option/unicode.c
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FATFSINC = ${CHIBIOS}/os/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 "hal.h"
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#include "ffconf.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 pdrv /* Physical drive nmuber (0..) */
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)
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{
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DSTATUS stat;
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switch (pdrv) {
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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 (blkGetDriverState(&MMCD1) != BLK_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 (blkGetDriverState(&SDCD1) != BLK_READY)
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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_NOINIT;
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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 pdrv /* Physical drive nmuber (0..) */
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)
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{
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DSTATUS stat;
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switch (pdrv) {
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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 (blkGetDriverState(&MMCD1) != BLK_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 (blkGetDriverState(&SDCD1) != BLK_READY)
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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_NOINIT;
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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 pdrv, /* 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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UINT count /* Number of sectors to read (1..255) */
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)
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{
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switch (pdrv) {
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#if HAL_USE_MMC_SPI
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case MMC:
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if (blkGetDriverState(&MMCD1) != BLK_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 += MMCSD_BLOCK_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 (blkGetDriverState(&SDCD1) != BLK_READY)
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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 _USE_WRITE
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DRESULT disk_write (
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BYTE pdrv, /* 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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UINT count /* Number of sectors to write (1..255) */
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)
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{
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switch (pdrv) {
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#if HAL_USE_MMC_SPI
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case MMC:
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if (blkGetDriverState(&MMCD1) != BLK_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 += MMCSD_BLOCK_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 (blkGetDriverState(&SDCD1) != BLK_READY)
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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 /* _USE_WRITE */
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/*-----------------------------------------------------------------------*/
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/* Miscellaneous Functions */
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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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switch (pdrv) {
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#if HAL_USE_MMC_SPI
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case MMC:
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switch (cmd) {
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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) = MMCSD_BLOCK_SIZE;
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return RES_OK;
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#if _USE_ERASE
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case CTRL_ERASE_SECTOR:
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mmcErase(&MMCD1, *((DWORD *)buff), *((DWORD *)buff + 1));
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return RES_OK;
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#endif
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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 (cmd) {
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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) = mmcsdGetCardCapacity(&SDCD1);
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return RES_OK;
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case GET_SECTOR_SIZE:
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*((WORD *)buff) = MMCSD_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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#if _USE_ERASE
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case CTRL_ERASE_SECTOR:
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sdcErase(&SDCD1, *((DWORD *)buff), *((DWORD *)buff + 1));
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return RES_OK;
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#endif
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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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#endif /* _USE_IOCTL */
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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) 2006-2013 Giovanni Di Sirio
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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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 "hal.h"
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#include "ff.h"
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#if _FS_REENTRANT
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/*------------------------------------------------------------------------*/
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/* Static array of Synchronization Objects */
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/*------------------------------------------------------------------------*/
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static semaphore_t ff_sem[_VOLUMES];
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/*------------------------------------------------------------------------*/
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/* Create a Synchronization Object */
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/*------------------------------------------------------------------------*/
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int ff_cre_syncobj(BYTE vol, _SYNC_t *sobj) {
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*sobj = &ff_sem[vol];
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chSemObjectInit(*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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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, (systime_t)_FS_TIMEOUT);
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return msg == MSG_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 sobj) {
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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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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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