进不去中断

1万 · 2019-5-9 23:02

只求TimerA捕获能通过p1.0（a通道）捕获脉冲，并算出周期，结果进不去中断，

1万 · 2019-5-9 23:05

有没有捕获到脉冲？

1万 · 2019-5-9 23:08

其实是个低级的错误，不过我忘了，这是我的最终程序，很准的，你们可以参考一下
测试脉冲的周期时间——made by lqs

#include "msp430f4152.h"
#define LCD_ZREO                0XFA//0xf5
#define LCD_ONE                0x60
#define LCD_TWO                0xD6
#define LCD_THREE             0xf4
#define LCD_FOUR                0x6c
#define LCD_FIVE                0xbc
#define LCD_SIX                0xbe
#define LCD_SEVEN             0xe0
#define LCD_EIGHT             0xfe
#define LCD_NINE                0xfc
unsigned char aa[10]={LCD_ZREO ,LCD_ONE ,LCD_TWO ,LCD_THREE , LCD_FOUR ,LCD_FIVE ,LCD_SIX ,LCD_SEVEN,  LCD_EIGHT ,LCD_NINE };
unsigned int j=0,sub=0,data=0;
unsigned char i=0;
float f=0;
void clkinit()
{
  FLL_CTL0 &= ~XT1OF;
  FLL_CTL0 &= ~XTS_FLL;
  FLL_CTL1 &= ~(FLL_DIV0);
  FLL_CTL1 &= ~(FLL_DIV1);
}
void Portinit()
{
  P1DIR &= 0X00;
  P1SEL |= 0X01;
}
void Timer_Ainit()
{
  TA0CTL |= TASSEL0 + MC_2;
  TA0R = 0X00;
  TACCTL0 |= SCS + CM1 + CAP + CCIE; // CCIS0 +
}
void LCDinit()
{
  unsigned char t;
  LCDACTL |= LCD4MUX + LCDON + LCDFREQ_128;

  LCDAPCTL0 = 0X1F;
  LCDAPCTL1 = 0X00;
  LCDAVCTL0 |= LCDCPEN;
  LCDAVCTL1 |= 0X18;
  P5SEL = 0XF0;
  for(t=0;t<10;t++)
LCDMEM[t] = 0;
}
void chazhi() //pulse recurrent time）脉冲周期时间
{
j++;
if(j==1)
{
   TACCR0 = 0X00;
}

if(j==2)
{
   j=0;
   sub = TACCR0;
  }
}
void LCDdiaplay()
{
  sub= f/32768*1000;//0.0001
  LCDMEM[9] = 0x02;
  LCDMEM[8] = 0;
  data = sub%10;
  LCDMEM[7] = aa[data];  //1.000
  data = sub/10%10;
  LCDMEM[6] = aa[data] + 0x01;
  data = sub/100%10;
  LCDMEM[5] = aa[data];
  data = sub/1000%10;
  LCDMEM[4] = aa[data];
//  data = sub/10000%10;
  LCDMEM[3] = 0;
//  data = sub/100000%10;
  LCDMEM[2] = 0;
  LCDMEM[1] = 0;
  LCDMEM[0] = 0;
}
/*void testLCD()
{

  LCDMEM[0]=0xff;
  LCDMEM[1]=0xff;
  LCDMEM[2]=0xff;
  LCDMEM[3]=0xff;
  LCDMEM[4]=0xff;
  LCDMEM[5]=0xff;
  LCDMEM[6]=0xff;
  LCDMEM[7]=0xff;
  LCDMEM[8]=0xff;
  LCDMEM[9]=0xff;
}*/
void main( void )
{
  WDTCTL = WDTPW + WDTHOLD;    // Stop watchdog timer to prevent time out reset
  clkinit();
  Portinit();
  Timer_Ainit();
  LCDinit();
  _EINT();
  while(1)
  {
   LCDdiaplay();
  }
}

#pragma vector = TIMERA0_VECTOR
__interrupt void Timer_A0()
{
  //做脉冲的时间差值
j++;
if(j == 1)
{
   TAR = 0X00;  //定时器数TAR0送到TACCR0;
}
if(j == 2)
{
   j = 0;
   f = TACCR0;
}
  TACCTL0 &= ~CCIFG;
}