程序代码：

when(timer_expires(mTimerPreiod))//这句可以忽略不用理解其含义，主要是将｛｝中的转化，琢磨很久了，总是报错，谢谢各位啦！
{
    static uint8  u8TempSign1 = 0;
    
    uint16 u16LightDestroyTime;
    uint16 u16LightBrightTime;
    
    if( (Sci_Tx->u8ErrTimes[0]!=0) || (Sci_Tx->u8ErrTimes[1]!=0) || (Sci_Tx->u8ErrTimes[2]!=0) )
    {
        u16LightDestroyTime = 1500L;
        u16LightBrightTime  = 1500L;
    }
    else if(u16MsgErrCount == 1)
    {
        u16LightDestroyTime = 2870L;
        u16LightBrightTime  =  130L;
        
    }
    else
    {
        u8TempSign1 = 0;
        u16LightDestroyTime = 3000L;
        u16LightBrightTime  =    1L;
    }
    
    
    if(u8TempSign1 == 0)
    {
        u8TempSign1 = 1;
        mTimerPreiod = u16LightDestroyTime;
        io_out(ioErrorLed,1);
    }
    else
    {
        u8TempSign1 = 0;
        mTimerPreiod = u16LightBrightTime;
        io_out(ioErrorLed,0);
        
    }
    watchdog_update();    
}