INT1 不进中断！

 

 #pragma config WDTEN = OFF          //WDT disabled (enabled by SWDTEN bit)

 #pragma config PLLDIV = 2           //Divide by 3 (12 MHz oscillator input)

 #pragma config STVREN = ON          //stack overflow/underflow reset enabled

 #pragma config XINST = OFF          //Extended instruction set disabled

 #pragma config CPUDIV = OSC1        //No CPU system clock divide

 #pragma config CP0 = OFF            //Program memory is not code-protected

 #pragma config OSC = INTOSCPLL

 #pragma config T1DIG = OFF           //Sec Osc clock source may be selected

 #pragma config LPT1OSC = OFF        //high power Timer1 mode

 

 #pragma config FCMEN = OFF          //Fail-Safe Clock Monitor disabled

 #pragma config IESO = OFF           //Two-Speed Start-up disabled

 #pragma config WDTPS = 32768        //1:32768

 #pragma config RTCOSC = INTOSCREF    //RTCC uses INTRC as clock

 

 #pragma config DSBOREN = OFF        //Zero-Power BOR disabled in Deep Sleep

 #pragma config DSWDTOSC = INTOSCREF //DSWDT uses INTOSC/INTRC as clock

 #pragma config DSWDTEN = OFF        //Disabled

 #pragma config DSWDTPS = 2048       //1:8,192 (8.5 seconds)

 

 #pragma config IOL1WAY = OFF        //IOLOCK bit can be set and cleared

 #pragma config MSSP7B_EN = MSK7     //7 Bit address masking

 #pragma config WPFP = PAGE_0        //Write Protect Program Flash Page 0

 #pragma config WPEND = PAGE_0       //Start protection at page 0

 #pragma config WPCFG = OFF          //Write/Erase last page protect Disabled

 #pragma config WPDIS = OFF          //WPFP[5:0], WPEND, and WPCFG bits ignored 

 

#include <p18cxxx.h>

void drv_CPUIO_INT1_Init_Falling(void)

{

 INTCON3bits.INT1IF = 0;

 INTCON2bits.INTEDG1=0;  //No, falling edge is used

 INTCON2bits.RBPU=1; //disable pullups

 INTCON2bits.RBIP=1;

 INTCONbits.RBIE=1;

 INTCONbits.RBIF=0;

 INTCON3bits.INT1IP=1;

 INTCON3bits.INT1IE=1;

 PORTB = PORTB;

 

}

void main(void)

{

 TRISA = 0x25;

 PORTA = 0x27;

 LATA = 0x27;

 TRISB = 0x1;

 PORTB = 0xF;

 LATB = 0xF;

 TRISC = 0x33;

 PORTC = 0x73;

 LATC = 0x73;

 RPINR1 = 0; //INT1 = RP0（RA0外接按键，按下为低电平）

 drv_CPUIO_INT1_Init_Falling();

 while(1)

 {

  Nop();

  Nop();

  PORTB = PORTB; 

 }

}

void high_isr (void);

void low_isr (void);

#pragma code high_vector=0x08

void high_vector (void)

{

  _asm goto high_isr _endasm

}

#pragma code low_vector=0x18

void low_vector (void)

{

  _asm goto low_isr _endasm

}



#pragma code

#pragma interrupt high_isr

void high_isr (void)

{

 if(INTCON3bits.INT1IF)

 {

  Nop();

  INTCON3bits.INT1IF = 0; 

 }

 if(INTCONbits.RBIF)

 {

  Nop();

  INTCONbits.RBIF=0;

 }

}

#pragma interruptlow low_isr

void low_isr (void)

{

 Nop();

 Nop();

 Nop();

}