RL-FLASHFS驱动w25n01gvze1g型号nandflash，spi接口

企鹅q

使用w25n01gvze1g型号nandflash，spi接口，cortexM4F内核，裸机移植rl-flashfs系统。


参考f429驱动的例子，
低级格式化完成...
挂载文件系统失败，返回码2.
底层的读写和块擦除函数都测试通过没问题，flash的硬件ecc使能，还应该查哪里呢 ？？求高手指点！

eric2013

返回2表示：卷错误，挂载失败，对于FAT文件系统意味着无效的MBR，启动记录或者非FAT格式

应该是你的底层读写函数还是有问题。

企鹅q

测试时连续读写了16个块，验证了每页2048个数据没有错。64B spare area各位含义如下图：



以下初始化、读写函数：

static U32 Init (NAND_DRV_CFG *cfg) {
   
  /* Define spare area layout */
  
   cfg-&gtgLay-&gtos_LSN = 4;
  cfg-&gtgLay-&gtos_COR = 2;
  cfg-&gtgLay-&gtos_BBM = 0;
  cfg-&gtgLay-&gtos_ECC = 8;

  /* Define page organization */
  cfg-&gtgLay->SectInc  =  512;
  cfg-&gtgLay->SpareOfs =  2048;
  cfg->PgLay->SpareInc =  16;
   
  NAND_Init();
  return RTV_NOERR;
}

/*-----------------------------------------------------------------------------
*      Read page
*  row  = Page address
*  *buf = Pointer to data buffer
*  *cfg = Pointer to configuration structure
*
*  Return: RTV_NOERR         - Page read successful
*          ERR_NAND_HW_TOUT  - Hardware transfer timeout
*          ERR_ECC_COR       - ECC corrected the data within page
*          ERR_ECC_UNCOR     - ECC was not able to correct the data
*----------------------------------------------------------------------------*/
static U32 PageRead (U32 row, U8 *buf, NAND_DRV_CFG *cfg) {
   U8 Status;
   
   Status = NAND_ReadPage(buf, row, 0, NAND_PAGE_TOTAL_SIZE);
   return Status;
}

static U32 PageWrite (U32 row, U8 *buf, NAND_DRV_CFG *cfg) {
   U8 Status;

   Status = NAND_WritePage(buf, row, 0, NAND_PAGE_TOTAL_SIZE);
   return Status;
}
底层检读取态寄存器返回ECC校验结果等





uint8_t FSMC_NAND_ReadPage(uint8_t *_pBuffer, uint32_t _ulPageNo, uint16_t _usAddrInPage, uint16_t _usByteCount)
{
    unsigned int au32SourceData;
    unsigned int au32DestinationData;
    unsigned int counter;
    unsigned char eccresult;

        //2Îêy′íÎó
    if(_usByteCount > (2112-_usAddrInPage))
        return ERR_NAND_HW_TOUT;
    // /CS: active
    SPI_SET_SS_LOW(SPI2);

    // configure transaction length as 8 bits
    SPI_SET_DATA_WIDTH(SPI2, 8);

    // send Command: 0x03, Read data
    au32SourceData = 0x13;
    SPI_WRITE_TX(SPI2, au32SourceData);
    while(SPI_IS_BUSY(SPI2));

    au32SourceData = 0;
    SPI_WRITE_TX(SPI2, au32SourceData);
    while(SPI_IS_BUSY(SPI2));
   
    SPI_SET_DATA_WIDTH(SPI2, 16);
    // send 16-bit start address
    au32SourceData = _ulPageNo&0xffff;
    SPI_WRITE_TX(SPI2, au32SourceData);
    while(SPI_IS_BUSY(SPI2));

        SPI_SET_SS_HIGH(SPI2);
        //μè′yÖ¸¶¨ò3êy¾Yìî3ädata bufferíê3é
        for(counter = 6; counter >0; counter--)
        {
                if(NAND_IsReady() == 0)
                        break;
                SysTickDelay(10);
        }
        if(counter == 0)
                return ERR_NAND_HW_TOUT;
        
        SPI_SET_SS_LOW(SPI2);
    // configure transaction length as 8 bits
    SPI_SET_DATA_WIDTH(SPI2, 8);

        au32SourceData = 0x03;
        SPI_WRITE_TX(SPI2, au32SourceData);   
        while(SPI_IS_BUSY(SPI2));
        
        SPI_SET_DATA_WIDTH(SPI2, 24);
        
        // send 24-bit start address
        au32SourceData = _usAddrInPage;
        au32SourceData <<= 8;
        SPI_WRITE_TX(SPI2, au32SourceData);   
        while(SPI_IS_BUSY(SPI2));
        
        SPI_SET_DATA_WIDTH(SPI2, 8);
        
    I2S_CLR_RX_FIFO(SPI2);

    for(counter = 0; counter < _usByteCount; counter++)
    {
        // receive
        au32SourceData = 0x0;
        SPI_WRITE_TX(SPI2, au32SourceData);
        while(SPI_IS_BUSY(SPI2));

        // dump Rx register
        au32DestinationData = SPI_READ_RX(SPI2);
        _pBuffer[counter] = (unsigned char) au32DestinationData;
    }

    // /CS: de-active
    SPI_SET_SS_HIGH(SPI2);
        
        eccresult = (NAND_ReadStatusReg(0xc0)&0x30)>>4;
        if(eccresult == 0)
                return RTV_NOERR;
        else if(eccresult == 1)
                return ERR_ECC_COR;
        else
                return ERR_ECC_UNCOR;
}

不知道还有哪里有问题???或者除了验证2048字节数据读写正确,还需要测什么?

企鹅q

补上图

ZANGhn

LZ;驱动demo能分享一份么？

eittinfo

hi
i have same problem, could you solve this problem?
i got format failt and fint error code 2
but all low level spi nand flash work correctly
tnx

xsyyhz

楼主，你好，问题解决了没