大学生
最后登录1970-1-1
在线时间 小时
注册时间2015-7-30
|
楼主 |
发表于 2016-1-9 09:56:08
|
显示全部楼层
/*-----------------------------------------------------------------------*/
/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2013 */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be */
/* attached to the FatFs via a glue function rather than modifying it. */
/* This is an example of glue functions to attach various exsisting */
/* storage control module to the FatFs module with a defined API. */
/*-----------------------------------------------------------------------*/
#include "diskio.h" /* FatFs lower layer API */
#include "ff.h"
#ifndef FATFS_FLASH_SPI
#define FATFS_FLASH_SPI 1
#endif
#ifndef TM_FATFS_CUSTOM_FATTIME
#define TM_FATFS_CUSTOM_FATTIME 0
#endif
#ifndef FATFS_USE_SDIO
#define FATFS_USE_SDIO 0
#endif
/* Include SD card files if is enabled */
#if FATFS_USE_SDIO == 1
#include "bsp_sdio_sdcard.h"
#endif
#if FATFS_FLASH_SPI == 1
#include "fatfs_flash_spi.h"
#endif
/* Definitions of physical drive number for each media */
#define ATA 1
#define SPI_FLASH 0
#define SD_BLOCK_SIZE 512 /* Block Size in Bytes */
//extern SD_CardInfo SDCardInfo;
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
/*-----------------------------------------------------------------------*/
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive nmuber (0..) */
)
{
DSTATUS status = STA_NOINIT;
FLASH_DEBUG_FUNC() ;
switch (pdrv) {
case ATA: /* SD CARD */
#if FATFS_USE_SDIO == 1
FLASH_DEBUG("SD init");
status = SD_Init();
if (status!=SD_OK )
{
status = STA_NOINIT;
}
else
{
status = RES_OK;
}
#endif
break;
case SPI_FLASH:
#if FATFS_FLASH_SPI ==1
FLASH_DEBUG("SPI FLASH init");
status = TM_FATFS_FLASH_SPI_disk_initialize();
#endif
break;
default:
status = STA_NOINIT;
}
return status;
}
/*-----------------------------------------------------------------------*/
/* Get Disk Status */
/*-----------------------------------------------------------------------*/
DSTATUS disk_status (
BYTE pdrv /* Physical drive nmuber (0..) */
)
{
DSTATUS status = STA_NOINIT;
switch (pdrv) {
case ATA: /* SD CARD */
#if FATFS_USE_SDIO == 1
status = RES_OK;
#endif
break;
case SPI_FLASH:
#if FATFS_FLASH_SPI ==1
status = TM_FATFS_FLASH_SPI_disk_status(); /* SDIO communication */
#endif
break;
default:
status = STA_NOINIT;
}
return status;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
/*-----------------------------------------------------------------------*/
DRESULT disk_read (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Sector address (LBA) */
UINT count /* Number of sectors to read (1..128) */
)
{
DRESULT status = RES_PARERR;
switch (pdrv) {
case ATA: /* SD CARD */
#if FATFS_USE_SDIO == 1
if (count > 1)
{
SD_ReadMultiBlocks(buff, sector*SD_BLOCK_SIZE, SD_BLOCK_SIZE, count);
/* Check if the Transfer is finished */
SD_WaitReadOperation(); //Ñ-»·2éÑˉdma′«êäêÇ·ñ½áêø
/* Wait until end of DMA transfer */
while(SD_GetStatus() != SD_TRANSFER_OK);
}
else
{
SD_ReadBlock(buff, sector*SD_BLOCK_SIZE, SD_BLOCK_SIZE);
/* Check if the Transfer is finished */
SD_WaitReadOperation(); //Ñ-»·2éÑˉdma′«êäêÇ·ñ½áêø
/* Wait until end of DMA transfer */
while(SD_GetStatus() != SD_TRANSFER_OK);
}
status = RES_OK;
#endif
break;
case SPI_FLASH:
#if FATFS_FLASH_SPI ==1
status = TM_FATFS_FLASH_SPI_disk_read(buff, sector, count); /* SDIO communication */
#endif
break;
default:
status = RES_PARERR;
}
return status;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
/*-----------------------------------------------------------------------*/
#if _USE_WRITE
DRESULT disk_write (
BYTE pdrv, /* Physical drive nmuber (0..) */
const BYTE *buff, /* Data to be written */
DWORD sector, /* Sector address (LBA) */
UINT count /* Number of sectors to write (1..128) */
)
{
DRESULT status = RES_PARERR;
if (!count) {
return RES_PARERR; /* Check parameter */
}
switch (pdrv) {
case ATA: /* SD CARD */
#if FATFS_USE_SDIO == 1
if (count > 1)
{
SD_WriteMultiBlocks((uint8_t *)buff, sector*SD_BLOCK_SIZE,SD_BLOCK_SIZE, count);
/* Check if the Transfer is finished */
SD_WaitWriteOperation(); //μè′ydma′«êä½áêø
while(SD_GetStatus() != SD_TRANSFER_OK); //μè′ysdioμ½sd¿¨′«êä½áêø
}
else
{
SD_WriteBlock((uint8_t *)buff,sector*SD_BLOCK_SIZE,SD_BLOCK_SIZE);
/* Check if the Transfer is finished */
SD_WaitWriteOperation(); //μè′ydma′«êä½áêø
while(SD_GetStatus() != SD_TRANSFER_OK); //μè′ysdioμ½sd¿¨′«êä½áêø
}
status = RES_OK;
#endif
break;
case SPI_FLASH:
#if FATFS_FLASH_SPI ==1
status = TM_FATFS_FLASH_SPI_disk_write((BYTE *)buff, sector, count); /* SDIO communication */
#endif
break;
default:
status = RES_PARERR;
}
return status;
}
#endif
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
/*-----------------------------------------------------------------------*/
#if _USE_IOCTL
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive nmuber (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
DRESULT status = RES_PARERR;
switch (pdrv) {
case ATA: /* SD CARD */
#if FATFS_USE_SDIO == 1
switch (cmd)
{
case GET_SECTOR_SIZE : // Get R/W sector size (WORD)
*(WORD * )buff = 512;
break;
case GET_BLOCK_SIZE: // Get erase block size in unit of sector (DWORD)
*(DWORD * )buff = SDCardInfo.CardBlockSize;
break;
case GET_SECTOR_COUNT:
*(DWORD * )buff = SDCardInfo.CardCapacity/SDCardInfo.CardBlockSize;
case CTRL_SYNC :
break;
}
status = RES_OK;
#endif
break;
case SPI_FLASH:
#if FATFS_FLASH_SPI ==1
status = TM_FATFS_FLASH_SPI_disk_ioctl(cmd, buff); /* SDIO communication */
#endif
break;
default:
status = RES_PARERR;
}
return status;
}
#endif
__weak DWORD get_fattime(void) {
/* Returns current time packed into a DWORD variable */
return ((DWORD)(2013 - 1980) << 25) /* Year 2013 */
| ((DWORD)7 << 21) /* Month 7 */
| ((DWORD)28 << 16) /* Mday 28 */
| ((DWORD)0 << 11) /* Hour 0 */
| ((DWORD)0 << 5) /* Min 0 */
| ((DWORD)0 >> 1); /* Sec 0 */
}
|
|