fatfs修改记录.txt

stm32-SDIO+FatFS文件系统txt-int-ascii

SDIO+FAT

1、在ff.h中添加 DWORD get_fattime(void);声明
2、在ff.c中添加get_fattime函数的定义，如果没有需要直接返回0
3、在diskio.c中包含对SD卡初始化和读写的程序(sdcard.h)
4、在diskio.c中预定义一个常量：#define SECTOR_SIZE	512
5、修改diskio.c中的disk_initialize函数，内容如下：
	SD_CardInfo SDCardInfo;
	SD_Error Status = SD_OK;
		
	Status = SD_Init();

  	//Read CSD/CID MSD registers
	if (Status == SD_OK) {
    		Status = SD_GetCardInfo(&SDCardInfo);
  	}

  	//Select Card
	if (Status == SD_OK) {
   		Status = SD_SelectDeselect((u32) (SDCardInfo.RCA << 16));
	}

	//Set Device Transfer Mode to INTERRUPT 
  	if (Status == SD_OK) {  
		Status = SD_SetDeviceMode(SD_INTERRUPT_MODE);
   	}
	
	if (Status == SD_OK) {
		return RES_OK;
	} else {
		return RES_ERROR;
	}
6、修改diskio.c中的disk_status，直接返回0
7、修改diskio.c中的disk_read，函数内容如下：
	SD_Error Status = SD_OK;
	
	if (count == 1) {
		Status = SD_ReadBlock(sector << 9 ,(u32 *)(&buff[0]),SECTOR_SIZE);
	} else {
		Status = SD_ReadMultiBlocks(sector << 9 ,(u32 *)(&buff[0]),SECTOR_SIZE,count);	
	}

	if (Status == SD_OK) {
		return RES_OK;
	} else {
		return RES_ERROR;
	}
8、修改diskio.c中的disk_write，函数内容如下：
	SD_Error Status = SD_OK;
	
	if (count == 1) {
		Status = SD_WriteBlock(sector << 9 ,(u32 *)(&buff[0]),SECTOR_SIZE);
	} else {
		Status = SD_WriteMultiBlocks(sector << 9 ,(u32 *)(&buff[0]),SECTOR_SIZE,count);	
	}

	if (Status == SD_OK) {
		return RES_OK;
	} else {
		return RES_ERROR;
	}
9、修改diskio.c中的disk_ioctl，直接返回0