请教 PIC16F690 捕获不进中断的问题！

只看该作者 · 2013-7-13 22:40

无论用什么方法，始终不仅捕获中断，不知道为什么？谢谢！
/*********************************************
*脉宽测量初始化
**********************************************/
void PWM_CAP_Init(void)
{
CCP1CON = 0x05; //每6个上升沿捕获一次
T1CON = 0x00; //TMR1ON  = 1;
PEIE = 1; //允许一切外部中断
//PIR1 = 1; //
CCP1IE  = 1;
TRISC5  = 1; //RC5设置为输入模式
TMR1ON  = 1;    //SET TIMER1 OFF
// RC5    = 1;
GIE = 1;
//INTCON=0X0D0;//SET GIE=1, PIEE=1,TOIE=1; SET INT
}

/*********************************************
*系统初始化
**********************************************/
void  iniport(void) //ioprt booll
{
//SET I/O START
// OSCCON=0x47;    //使用on mcu clock 1MHZ
//OSCCON=0x63;    //使用on mcu clock 4MHZ
OSCCON=0x68;       //外部时钟
WDTCON=0X15;    //open wothdog
PORTA=0X00;
PORTB=0X00;
PORTC=0X21;       //上拉
ANSEL=0X00;    //SET AN7 INTPU //0x08
ANSELH=0X01;
TRISA=0X3f;    //SET RA<0:5> INPUT RA<6:7>OUTPUT
   ADCON1=0X40;    //SET FRK COOK 1/4
ADFM=0;          // AD DATA LIFT |
ADCON0=0X20;    //SET AD AD DATA TO LIFT AN7 INPUT
ADON=1;          //SET AD END
ADIE=0;          //SET AD INI CLOSE
TRISB=0X0ff;    //SET ALL RB OUTPUT
TRISC=0X78;    //SET  RC<6:4:5:3>INPUT -ALL OUTPUT;
//SET I/O END
OPTION=0X0F; //SET PS<2:0>TO WDT
//INTCON=0X0D0;//SET GIE=1, PIEE=1,TOIE=1; SET INT
   //IOCA=0X04;
//TMR1IE=1;
//T1CON=0X00; //SET TIMER1 1:4T1CK
//TMR1L=0X00;
//TMR1H=0x00;
//TMR1ON=1;    //SET TIMER1 OFF
PWM_CAP_Init();
RC0=1;
P_test=0;
V_test=0;
}

/*********************************************
*捕获中断
**********************************************/
void interrupt cplint(void)
{
if(TMR1IF==1)
{
      TMR1IF=0;
      RC1 = ~RC1;
      //RC0 = 0;
}

if(CCP1IF==1)
{
      CCP1IF = 0;
      RC2=~RC2;
      if(EXT_interrupt==0)
      {
         EXT_interrupt = 1;
         Frq_FirstValue  = CCPR1H;
         Frq_FirstValue  = Frq_FirstValue*256 + CCPR1L;;
         //Frq_FirstValue  = CCPR1H*256 + CCPR1L;
         RC1 = 0;
         RC0 = 0;
      }
      else
      {
         EXT_interrupt = 0;
         Frq_SecondValue  = CCPR1H;
         Frq_SecondValue  = Frq_SecondValue*256 + CCPR1L;;
         //Frq_FirstValue  = CCPR1H*256 + CCPR1L;
         Frq_Refresh = 1; //通知主程序，采集到一个完整的周期，频率可以更新
         RC1 = 1;
         RC0 = 1;
      }
}
}

1万 · 2013-7-14 22:22

发个ccsc版本的ccp1捕捉中断例子：
#include <16f690.h>

#device ADC=10

#use delay(clock=4000000)

#fuses XT,NOWDT

#byte CCP1CON=0x017
#byte CCPR1L=0x015
#byte CCPR1H=0x016
#byte T1CON=0x010
#byte TMR1L=0x00E

#byte TMR1H=0x00F
#byte PIR1=0x00C
#byte PIR2=0x00D
#byte PIE1=0x08C
#byte PIE2=0x08D
#byte INTCON=0x00B
#bit CCP1IF=PIR1.2
#bit CCP1IE=PIE1.2
#bit GIE=INTCON.7
#bit PEIE=INTCON.6

#byte PORTA=0x005
#byte PORTB=0x006
#byte PORTC=0x007
#byte TRISA=0x085
#byte TRISB=0x086
#byte TRISC=0x087

void Port_Init(void)
{
set_tris_c(0x20);
}

void CCP1_Init(void)
{
T1CON = 0x01;
TMR1L = 0x00;
TMR1H = 0x00;
CCP1CON = 0x05;
CCPR1L = 0x00;
CCPR1H = 0x00;
CCP1IF = 0;
CCP1IE = 1;
PEIE = 1;
GIE = 1;
}

#INT_CCP1
void CCP1_ISR(void)
{
CCP1IF = 0;
TMR1L = 0x00;
TMR1H = 0x00;
PORTC ^= 0x01;
}

void main(void)
{
Port_Init();
CCP1_Init();
for(;;)
{
;
}
}

请教 PIC16F690 捕获不进中断的问题！

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