PIC进不了OC1中断函数

void initPWM()

{

        //PPSUnLock;

        iPPSOutput(OUT_PIN_PPS_RP7,OUT_FN_PPS_OC1);    //configure RP7 as OC1

        //PPSLock;



        T2CONbits.TCS = 0;        //choose the internal clock

        

        /*set the PWM frequency as 61Hz*/

        PR2 = 0XFFFF;

        T2CONbits.TCKPS = 0;

                

        OC1R = 0X7FFF;        //the time to the rising edge of the output pluse

        OC1RS = 0X7FFF;        //the time to the falling edge of the pulse,should less or equal to PR2

        IPC0bits.OC1IP = 0X7;//interrupt is priority 7

        IEC0bits.OC1IE = 1;//enable OC1 interrupt

        OC1CONbits.OCM = 6;        //initialize OC1 pin low,generate continous output pulses

        OC1CONbits.OCTSEL = 0;        //select timer2

        T2CONbits.TON = 1;        //start 16 bit timer2

}



/*void __attribute__((__interrupt__, no_auto_psv)) _T2Interrupt()

{

         IFS0bits.T2IF = 0;        //clear timer 2 interrupt flag

   

}*/



void __attribute__((__interrupt__, no_auto_psv)) _OC1Interrupt()

{

         IFS0bits.OC1IF = 0;        //clear OC1 interrupt flag

         flag = 1;

}



/*change duty cycle from 50% to 98% continous*/

void PWMDutyChange()

{



        if(OC1RS <= 0XFAE0)

                OC1RS = 0X7FFF + 0X0001;

        else

                OC1RS = 0X7FFF;



        flag = 0;

}



nt main()

{

        TRISBbits.TRISB14= 0;                         //P1B4 is output,control D8;

        LATBbits.LATB14 = 0;

        initPWM();



Try:        

        LATBbits.LATB14 = 0;

        Delay_ms(16);

        while(!flag);

                //{

                        PWMDutyChange();

                        LATBbits.LATB14 = 1;

                        Delay_ms(16);

                //}

goto Try;

        

        return success;

}