msp430程序第二个中断无法执行，也就是进不去第二个中断

ID:511424 · 发表于 2019-4-20 21:47

#include <msp430.h>

/*
* main.c
*/
int main(void) {
WDTCTL = WDTPW | WDTHOLD;       // Stop watchdog timer
P1OUT =BIT3;
P1REN |=BIT3;
      P1IE |=BIT3;
      P1IES |=BIT3;
      P1IFG &=~BIT3;
      P1OUT |=BIT2;
      _BIS_SR(GIE);
      while (1)
      {
            if((P1OUT&BIT2)==0)
            {
                     TA0CTL = TASSEL_1 + MC_1 + TACLR;
                     TA0CCTL0 = CCIE;
                     TACCR0 = 32768;    //30秒计时
                     _BIS_SR(GIE);
            }
            else
                     __no_operation();

      }
}
#pragma vector=PORT1_VECTOR
__interrupt void Port_1(void)
{
      P1OUT &=~BIT2;
      P1IFG &= ~BIT3;
}
#pragma vector = TIMER0_A0_VECTOR
__interrupt void Timer_A(void)
{
      static int i=0;
      i++;
      if(i==30)
      P1OUT |=BIT2;
      else
            __no_operation();
}

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