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ChibiOS
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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3039 35acf78f-673a-0410-8e92-d51de3d6d3f4

This commit is contained in:
gdisirio 2011-06-09 19:59:11 +00:00
parent 060e34a409
commit 6b5686560b
1 changed files with 0 additions and 222 deletions
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222
ext/diskio.c
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@ -1,222 +0,0 @@
/*-----------------------------------------------------------------------*/
/* 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"
extern MMCDriver MMCD1;
/*-----------------------------------------------------------------------*/
/* Correspondence between physical drive number and physical drive. */
#define MMC 0
#define SDC 1
/*-----------------------------------------------------------------------*/
/* 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_NODISK;
if (mmcIsWriteProtected(&MMCD1))
stat |= STA_PROTECT;
return stat;
#endif /* HAL_USE_MMC_SPI */
#if HAL_USE_SDC
case SDC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
stat |= STA_NODISK;
if (sdcIsWriteProtected(&SDCD1))
stat |= STA_PROTECT;
return stat;
#endif /* HAL_USE_SDC */
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* 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_NODISK;
if (mmcIsWriteProtected(&MMCD1))
stat |= STA_PROTECT;
return stat;
#endif /* HAL_USE_MMC_SPI */
#if HAL_USE_SDC
case SDC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
stat |= STA_NODISK;
if (sdcIsWriteProtected(&SDCD1))
stat |= STA_PROTECT;
return stat;
#endif /* HAL_USE_SDC */
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* 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;
#endif /* HAL_USE_MMC_SPI */
#if HAL_USE_SDC
case SDC:
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
stat |= STA_NODISK;
if (sdcRead(&SDCD1, sector, buff, count))
return RES_ERROR;
#endif /* HAL_USE_SDC */
}
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;
#endif /* HAL_USE_MMC_SPI */
#if HAL_USE_SDC
case SDC:
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
stat |= STA_NODISK;
if (sdcWrite(&SDCD1, sector, buff, count))
return RES_ERROR;
#endif /* HAL_USE_SDC */
}
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;
}
return RES_OK;
#endif /* HAL_USE_MMC_SPI */
#if HAL_USE_SDC
case SDC:
switch (ctrl) {
case CTRL_SYNC:
return RES_OK;
case GET_SECTOR_SIZE:
*((WORD *)buff) = SDC_BLOCK_SIZE;
return RES_OK;
default:
return RES_PARERR;
}
return RES_OK;
#endif /* HAL_USE_SDC */
}
return RES_PARERR;
}
DWORD get_fattime(void) {
return 0;
}