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STM学习笔记——nandflsh的操作（K9F1G08）

发布人：0750long 时间：2010-02-05 来源：工程师

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最近一个多礼拜都在搞这方面的东西，买了一块深圳英贝特的开发板，不过里面的例程是对小页的nandflsh的操作，所以与K9F1G08多少有点不同，网上也有很多版本，比如圈圈的K9F1G08驱动很是详细，但改动比较大，所以整合到我的程序里很费劲，还有一些其他的改进的版本，但经过试验，感觉能实现部分的操作，但不是很完整，比如读写多页的操作，就会出现bug，今天在网上搜到了红牛的开发板的例程，试了一下很是不错，根据他的例子和本人的例子相结合，整理如下：

fsmc_nand.h中应该改动的代码：（注释没有及时更新）

/* Exported constants --------------------------------------------------------*/
/* NAND Area definition for STM3210E-EVAL Board RevD */
#define CMD_AREA (u32)(1<<16) /* A16 = CLE high */
#define ADDR_AREA (u32)(1<<17) /* A17 = ALE high */

#define DATA_AREA ((u32)0x00000000)

/* FSMC NAND memory command */
#define NAND_CMD_READ_1 ((u8)0x00)
#define NAND_CMD_READ_TRUE ((u8)0x30)

#define NAND_CMD_RDCOPYBACK ((u8)0x00)
#define NAND_CMD_RDCOPYBACK_TRUE ((u8)0x35)

#define NAND_CMD_PAGEPROGRAM ((u8)0x80)
#define NAND_CMD_PAGEPROGRAM_TRUE ((u8)0x10)

#define NAND_CMD_COPYBACKPGM        ((u8)0x85)
#define NAND_CMD_COPYBACKPGM_TRUE   ((u8)0x10)

#define NAND_CMD_ERASE0             ((u8)0x60)
#define NAND_CMD_ERASE1             ((u8)0xD0)

#define NAND_CMD_READID             ((u8)0x90)
#define NAND_CMD_STATUS             ((u8)0x70)
#define NAND_CMD_RESET              ((u8)0xFF)

#define NAND_CMD_CACHEPGM ((u8)0x80)
#define NAND_CMD_CACHEPGM_TRUE ((u8)0x15)

#define NAND_CMD_RANDOMIN           ((u8)0x85)
#define NAND_CMD_RANDOMOUT          ((u8)0x05)
#define NAND_CMD_RANDOMOUT_TRUE     ((u8)0xE0)

#define NAND_CMD_CACHERD_START      ((u8)0x00)
#define NAND_CMD_CACHERD_START2     ((u8)0x31)
#define NAND_CMD_CACHERD_EXIT       ((u8)0x34)

/* NAND memory status */
#define NAND_VALID_ADDRESS         ((u32)0x00000100)
#define NAND_INVALID_ADDRESS       ((u32)0x00000200)
#define NAND_TIMEOUT_ERROR         ((u32)0x00000400)
#define NAND_BUSY                  ((u32)0x00000000)
#define NAND_ERROR                 ((u32)0x00000001)
#define NAND_READY                 ((u32)0x00000040)

/* FSMC NAND memory parameters */
#define NAND_PAGE_SIZE             ((u16)0x0800) /* 512 bytes per page w/o Spare Area */
#define NAND_BLOCK_SIZE            ((u16)0x0040) /* 32x512 bytes pages per block */
#define NAND_ZONE_SIZE             ((u16)0x0400) /* 1024 Block per zone */
#define NAND_SPARE_AREA_SIZE       ((u16)0x0040) /* last 16 bytes as spare area */
#define NAND_MAX_ZONE              ((u16)0x0001) /* 4 zones of 1024 block */

fsmc_nand.c 中应该改动的地方：

u32 FSMC_NAND_WriteSmallPage(u8 *pBuffer, NAND_ADDRESS Address, u32 NumPageToWrite)
{ // 要写入的数页地址要写入多少页
u32 index = 0x00, numpagewritten = 0x00, addressstatus = NAND_VALID_ADDRESS;
u32 status = NAND_READY, size = 0;

while((NumPageToWrite != 0x00) && (addressstatus == NAND_VALID_ADDRESS) && (status == NAND_READY))
{
/* Page write command and address */
*(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_PAGEPROGRAM;

    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0X00;
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);

/*    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);//ADDR_3rd_CYCLE(ROW_ADDRESS); //更改
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);//ADDR_4th_CYCLE(ROW_ADDRESS); //
*(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_3rd_CYCLE(ROW_ADDRESS);
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_4th_CYCLE(ROW_ADDRESS);    */

/* Calculate the size */

size = NAND_PAGE_SIZE + (NAND_PAGE_SIZE * numpagewritten);

    /* Write data */
    for(; index < size; index++)
    {
      *(vu8 *)(Bank_NAND_ADDR | DATA_AREA) = pBuffer[index];
   printf(" 0x%x\n",pBuffer[index]);
    }

    *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_PAGEPROGRAM_TRUE;

   while( GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_6) == 0 );

    /* Check status for successful operation */
    status = FSMC_NAND_GetStatus();

    if(status == NAND_READY)
    {
      numpagewritten++;

NumPageToWrite--;

      /* Calculate Next small page Address */
      addressstatus = FSMC_NAND_AddressIncrement(&Address);
    }
}
   return (status | addressstatus);
}

u32 FSMC_NAND_ReadSmallPage(u8 *pBuffer, NAND_ADDRESS Address, u32 NumPageToRead)
{
u32 index = 0x00, numpageread = 0x00, addressstatus = NAND_VALID_ADDRESS;
u32 status = NAND_READY, size = 0, i = 0,temp = 0;

while((NumPageToRead != 0x0) && (addressstatus == NAND_VALID_ADDRESS))
{
    /* Page Read command and page address */
    /* Page Read command and page address */
    *(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_READ_1;

    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0x00;
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = 0X00;
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);

/*
*(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);//ADDR_3rd_CYCLE(ROW_ADDRESS); //更改
   *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);//ADDR_4th_CYCLE(ROW_ADDRESS); //
*(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_3rd_CYCLE(ROW_ADDRESS);
    *(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_4th_CYCLE(ROW_ADDRESS);     */

*(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_READ_TRUE;

while( GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_6) == 0 );

/* Calculate the size */
size = NAND_PAGE_SIZE + (NAND_PAGE_SIZE * numpageread);
// for(i = 0; i <= 10000; i++);

    /* Get Data into Buffer */
    for(; index < size; index++)
    {
      pBuffer[index]= *(vu8 *)(Bank_NAND_ADDR | DATA_AREA);
   printf(" 0x%x\n",pBuffer[index]);
    }

    numpageread++;

    NumPageToRead--;

    /* Calculate page address */
    addressstatus = FSMC_NAND_AddressIncrement(&Address);
}

status = FSMC_NAND_GetStatus();

return (status | addressstatus);
}

对块的擦出，注意：只对前两个周期进行操作

u32 FSMC_NAND_EraseBlock(NAND_ADDRESS Address)
{
*(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_ERASE0;

*(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_1st_CYCLE(ROW_ADDRESS);
*(vu8 *)(Bank_NAND_ADDR | ADDR_AREA) = ADDR_2nd_CYCLE(ROW_ADDRESS);

*(vu8 *)(Bank_NAND_ADDR | CMD_AREA) = NAND_CMD_ERASE1;

while( GPIO_ReadInputDataBit(GPIOG, GPIO_Pin_6) == 0 );

return (FSMC_NAND_GetStatus());
}

附件为工程文件。

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