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现在我是通过端口1中断来操作电机的停止，但是有时候电机会出现跑过头的情况，从感应到脱离感应大概需要200ms时间，中断响应时间会达到那么长吗？
采用微动开关，到位则发起中断，停止电机。但是好像会停的不及时，导致电机又远离微动开关了。
PORT_INTERRUPT_FUNCTION(P1_ISR, P1INT_VECTOR)
{
if(P1IFG & (1 << 3))
if(VM_STATU_LOCKED())
MOTOR_OFF();
}
P1IFG &= ~(1 << 3);
P1IF = 0; }
