进不了IO中断

你把如下的例程测试下

void main(void) {

   WDTCTL = WDTPW + WDTHOLD;                 // Stop watchdog timer  

  P1IE |= 0x03;                             // P1.0 P1.1 interrupt enabled  

  P1IES |= 0x03;                            // P1.0,P1.1 Hi/lo edge  

   P1IFG &= ~0x03;                           // P1.0,P1.1 IFG cleared

  _BIS_SR(LPM4_bits + GIE);                 // Enter LPM4 w/interrupt }

// Port 1 interrupt service routine

 #pragma vector=PORT1_VECTOR

__interrupt void Port_1(void)

 {  

   P1IFG &= ~0x03;                           // P1.0,P1.1 IFG cleared

}