lm3s811定时器跑死

我用timer0做延时用，发现程序偶尔会死在延时函数里，debug发现都死在TimerValueGet()；系统时钟为6M，timer0的配置和延时函数如下，望大神指点，谢谢

void Timer0_Configuration(void)
{ 
 TimerDisable(TIMER0_BASE, TIMER_A); 
 TimerPrescaleSet(TIMER0_BASE, TIMER_A, 6) ;   // 计数器频率 sysclk / 6 = 1M   
 TimerConfigure(TIMER0_BASE, TIMER_CFG_16_BIT_PAIR | TIMER_CFG_A_ONE_SHOT);
 TimerLoadSet(TIMER0_BASE, TIMER_A, 1010);    //根据不同的系统时钟设定value
  TimerEnable(TIMER0_BASE, TIMER_A);
}

void Delay_1ms(void)
{ 
 Timer0_Configuration();
 TimerEnable(TIMER0_BASE, TIMER_A);
 while(1)
 {
  if(TimerValueGet(TIMER0_BASE, TIMER_A) < 10)      //待定1ms跳出
  break;
 }
 TimerDisable(TIMER0_BASE, TIMER_A);
}