在DFU中读取用户字节出错。请大神。。

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goldenkey1981| 资深技术员

楼主 | 2012-10-18 19:10 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

TI, ic, IO, ST, se

u16 TMP_UP;

int main(void)
{
  TMP_UP=0;
  TMP_UP=OPT_ReadUserData();

  //  DFU_Button_Config();

  /* Check if the Key push-button on STM3210x-EVAL Board is pressed */
  //if (DFU_Button_Read() != 0x00)
  //{
  if (TMP_UP & 0x0004) //如果标志位为1
  {

/* Test if user code is programmed starting from address 0x8003000 */
if (((*(__IO uint32_t*)ApplicationAddress) & 0x2FFE0000 ) == 0x20000000)
{ /* Jump to user application */

   JumpAddress = *(__IO uint32_t*) (ApplicationAddress + 4);
   Jump_To_Application = (pFunction) JumpAddress;
   /* Initialize user application's Stack Pointer */
   __set_MSP(*(__IO uint32_t*) ApplicationAddress);
   Jump_To_Application();
}

  } /* Otherwise enters DFU mode to allow user to program his application */
//}

  /* Enter DFU mode */
  DeviceState = STATE_dfuERROR;
  DeviceStatus[0] = STATUS_ERRFIRMWARE;
  DeviceStatus[4] = DeviceState;

  Set_System();
  Set_USBClock();
  USB_Init();

  /* Main loop */
  while (1)
  {
  }
}

以上代码在最前面读到用户字节总是出错是什么原因了。请大神指点呀

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