最近在做NAND FLASH加FATFS文件系统 要求只读NAND FLASH中的文件即可 下面是 NANDFLASH的读函数， 不加系统的时候可以读写 正常 。加了文件系统之后  就是读不到数据呀 报的FR_NO_FILE, /* (4) Could not find the file */错误 求大神帮忙分析一下 
uint32 FlashReadOneSector(uint32 Addr, uint8 * pBuf, uint32 Remain)
{
uint32 i;
while(Remain--)
{
FlashClrCe(); 
if(Addr>FLASH_MAX_SECTOR_ADDR) return 1; 
Addr=FlashAddrRemap(Addr); 

if((Addr&(~(FLASH_PAGE_SIZE-1))) != (FlashCurrentReadSectorAddr&(~(FLASH_PAGE_SIZE-1)))) 
{
FlashWriteCommand(0x00);
FlashWriteAddr4Byte(Addr);
FlashWriteCommand(0x30);
FlashWait(); //µÈ´ýÊý¾Ý¶Á»Ø
}
else
{
FlashWriteCommand(0x05);
FlashWriteAddr2Byte(Addr);
FlashWriteCommand(0xE0);
FlashWait(); 
}

for(i=0;i<FLASH_SECTOR_SIZE + FLASH_SECTOR_SIZE * Remain;i++)
{
pBuf[i]=FlashReadByte();  
}


FlashCurrentReadSectorAddr=Addr; 
if(Remain==0) 
{
 FlashCurrentReadSectorAddr=-1;
}
FlashSetCe(); //ÊÍ·Å×ÜÏß
}
return 0;

}