aduc7020 flash 读写异常，求教！

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fanguluke| 助理工程师

楼主 | 2007-9-9 10:17 | 只看该作者回帖奖励

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读写, ADUC, flash, ADDR, DDR

unsigned short int read_flash_word(unsigned short int addr)
{unsigned char ss;
    FEEMOD =0x00;                         //关闭页面，禁止修改
    FEEADR = addr;                      // set address
    FEECON = 0x01;                  // single read command
    flash_error = 0x00;
    ss = FEESTA&0x01;
    while (!ss && (flash_error++<=2000)) ss = FEESTA&0x01;             // wait data read ready
    return(FEEDAT);               // one byte data
}

void write_flash_word(unsigned short int addr, unsigned short int *word, unsigned short int count)
{ unsigned short int erased_page, i;
  unsigned char ss;
  erased_page = 0x01;             //页面起始地址的低九位应该为0，设置为1表示开始就需要页面清空
  for(i=0; i<count; i++)
  {
    if (erased_page!=(addr&0xFE00))
    {
        Erase_Page(addr);
        erased_page = addr&0xFE00;
    }
    FEEADR = addr++;        addr++;     // set address  //地址必须 “+ 2”
    FEEDAT = *word; word++;            // set data value
    FEECON = 0x02;                      // write command
    flash_error = 0x00;
    ss = FEESTA&0x01;
    while (!ss && (flash_error++<=2000)) ss = FEESTA&0x01;             // wait data read ready
  }
  FEEMOD =0x00;                         //关闭页面，禁止修改
}

执行写程序，程序就飞了，中断也不执行了，求教！

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