interrupt for reacting on PWM duty cycle

[john120]

Hello there,I would like to control a TRIAC through MOC3020 for that I am generaating a PWM signal which has a duty cycle corresponding to the increase or decrease of variable resistor in right or left direction.

can you please help me to do that me I am now using an adc but it is not working perfectly,see my codes with adc module:

#include "16f877a.h"
#device adc=10
#fuses NOWDT,HS,NODEBUG,NOLVP,NOCPD
#use delay(clock=4M)
#include "lcd.c"

int value;

unsigned long valeur;
int value1;
unsigned int value2;


void main()
{
set_tris_c(0x00);
set_tris_b(0x00);
set_tris_a(0xff);
set_tris_d(0x00);

lcd_init();

setup_comparator(NC_NC_NC_NC);   
setup_adc(ADC_clock_DIV_32);
setup_adc_ports(AN0);
set_adc_channel(0);
setup_vref(FALSE);   


setup_ccp1(CCP_PWM);
setup_timer_2(T2_DIV_BY_4, 255, 1);

while(1)
{

lcd_gotoxy(1,1);
delay_us(100);
read_adc(ADC_start_only); 
delay_us(100);
value=read_adc(ADC_read_only);
valeur=value;


value1=(valeur*500)/1023;
delay_us(100);
set_pwm1_duty(value1); 

printf(lcd_putc,"\f%d",value1);
delay_ms(1500);


}

}

I want the one who can help to do so with interrupr on RBO of PIC16F877A in ccs c compiler.

Thanks.