wince6.0 nandflash 驱动写入和读出内容不一样！！!!

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wince6.0 nandflash 驱动写入和读出内容不一样！！!! [复制链接]

我的 nand  是K9F1G08 , 是128M的，BUFFERSIZE是 2048

每次我写2k 的数据，写完再读发现只有前 512 的数据是一样，不知道是怎么回事！！
请教各位大虾!!!

unsigned int  WritePage(U32 addr, U8 *buf)
{
            unsigned int mecc;
            unsigned char tmp[7];
            unsigned char stat;
            //  Enable Chip
            NFChipEn();
            //  Issue command
            WrNFCmd(PROGCMD0);

            //  Setup address
            WrNFAddr(0);
            WrNFAddr(0);
            WrNFAddr(addr);
            WrNFAddr(addr >> 8);

            //  Initialize ECC register
            InitEcc();
            MEccUnlock();

            for(unsigned int i=0; i             {
                     WrNFDat8(buf);
            }

            //  Read out the ECC value generated by HW
            MEccLock();


            mecc = RdNFMEcc();

            tmp[0] = mecc&0xff;
            tmp[1] = (mecc>>8)&0xff;
            tmp[2] = (mecc>>16)&0xff;
            tmp[3] = (mecc>>24)&0xff;
            tmp[5] = 0xff;       //mark good block

            WrNFDat8(0xff);//2048，坏块标志
            SEccUnlock();
            WrNFDat8(tmp[0]);//ECC校验码
            WrNFDat8(tmp[1]);
            WrNFDat8(tmp[2]);
            WrNFDat8(tmp[3]);
            SEccLock();

            WrNFCmd(PROGCMD1);

            stat = WaitNFBusy();

            NFChipDs();
            if(stat)
            {
                     RETAILMSG(1,(TEXT("Write nand flash 0x%x fail\n"),addr));
            }
            else
            {

#if 1
                     U8 RdDat[BUFFERSIZE];

                     ReadPage(addr, RdDat);
                     for(i=0; i                      {
                              if(RdDat!=buf)//一旦大于512+16 这个位置就报错了
                              {
                                    RETAILMSG(1,(TEXT("Check data at page 0x%x, offset 0x%x fail\n"),addr, i));
                                    stat = 1;
                                    break;
                              }
                     }
                     #endif
            }