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標題: MSP430F169定時器捕獲模式進入不了中斷 [打印本頁]

作者: ruopan 時間: 2020-9-22 18:37
標題: MSP430F169定時器捕獲模式進入不了中斷
問題：定時器捕獲進入不了中斷，希望大手子們幫我看看配置哪里出錯了

芯片：MSP430F169
引腳P2.4
代碼：

#include "msp430x16x.h"
#include "timerA.h"
#include "delay.h"

void timerA_init(void)
{
//P2.4捕獲低電平
  TACTL = TASSEL_2+MC_2+TAIE+TACLR+ ID_1;//SMCLK,連續計數，中斷允許，計數器清零 8分頻1MZH
  TACCTL2 = CAP+CM_2+CCIS_0+SCS+CCIE;//開捕獲模式，下降沿捕獲，CCI1A輸入，同步捕獲，中斷允許
}

#pragma vector=TIMERA1_VECTOR  //捕獲中斷向量
__interrupt void Timer_A(void)
{
  switch(TAIV) //2為TA1捕獲向量地址4為TA2捕獲向量地址
  {
case 0X02 :
   P4OUT |=BIT4;
   delay_ms(200);
   P4OUT &=~BIT4;
   break;

case 0X04 :
   P4OUT |=BIT4;
   delay_ms(200);
   P4OUT &=~BIT4;
   break;
  }
}

#include "msp430x16x.h"
#include "gpio.h"

void GPIO_init(void)
{
  P4DIR =0X3c;       //P4.2 P4.4觸發信號
  P4SEL |=  BIT3+BIT5;       //P4.3 P4.5 接受反饋信號

  P2DIR &= ~BIT4;
  P2SEL |= BIT4;

  P6DIR |= BIT4;       //P6.4反饋信號指示燈
}

#include "System_clock.h"
#include<msp430x16x.h>

void System_clock(void)
{
  unsigned int iq0;
  BCSCTL1&=~XT2OFF;
  do
  {
IFG1&=~OFIFG;
for(iq0=0xff;iq0>0;iq0--);
  }
  while((IFG1&OFIFG)!=0);
  BCSCTL2=0x88;
}

#include "msp430x16x.h"
#include "System_clock.h"
#include "GPIO.h"
//#include "timerb.h"
#include "timerA.h"
#include "delay.h"

unsigned int i;

void main( void )
{
  // Stop watchdog timer to prevent time out reset
  WDTCTL = WDTPW + WDTHOLD;
  System_clock();
  GPIO_init();
//  timerb_init();
  timerA_init();
  _EINT();
  P4OUT &= ~BIT2;
  P4OUT &= ~BIT4;
  P6OUT |= BIT4;
  delay_ms(2000);
  while(1)
  {
i++;
P4OUT |= BIT2;
P6OUT &= ~BIT4;
delay_ms(100);
P4OUT &= ~BIT2;
P6OUT |= BIT4;
delay_ms(1100);
if(i==1500)
{
   while(1);
}
  }
}

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