5529 BSL升级代码

li dong 说：

5529 BSL代码中发送密码的疑问,

如果第一次密码发送失败,就会擦除flash(密码也恢复到默认?),  然后再用默认密码(这个时候密码就对了?).

如果是这样,就可以轻易把密码绕过了

 // Send Password... Causes mass erase if password is wrong! 

  reply = BSL_RX_Password(pass);
  if(reply)
  {
    // Wrong password provided.
    // Memory is being mass erased. Setting a 1sec delay.
    *massErased = true;
    worker->ReportProgress(5,"Mass erase occured!\r\n");
    Sleep(2000);

 // Memory is blank now. Re-send blank password to access device.

 reply = BSL_RX_Password(blankPass);
    if(reply)
    {
      worker->ReportProgress(10,"Password FAILED!\r\n");
      e->Result = false;
      return false;
    }
  }

  worker->ReportProgress(10,"Password Sent Successfully\r\n");

擦除掉代码的MCU就没什么保密的需要了啊

然后重新烧录的时候，密码是如何烧录的？