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;
}
我使能了0C1的中断优先级，中断使能，但是进入不中断函数。
请帮忙看下问题出在哪里了。 | 
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