#include <16F628A.h>

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES INTRC_IO                 //Internal RC Osc, no CLKOUT
#FUSES NOPUT                    //No Power Up Timer
#FUSES NOPROTECT                //Code not protected from reading
#FUSES NOBROWNOUT               //No brownout reset
#FUSES NOMCLR                   //Master Clear pin used for I/O
#FUSES NOLVP                    //No low voltage prgming, B3(PIC16) or B5(PIC18) used for I/O
#FUSES NOCPD                    //No EE protection

#use delay(internal=4M)

int pwm;
int progress=0;
int delay;

#INT_RTCC
void  RTCC_isr(void)
{
  if(delay>0)delay--;
}

#int_TIMER2
void  TIMER2_isr(void)
{
   if(pwm>progress)output_high(PIN_A6);
   else output_low(PIN_A6);
   if(progress==19)progress=0;
   else progress++;
}

void u_delay(int i)
{
   delay=i;
   do{}while(delay>0);
}

void main()
{

   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_4);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DIV_BY_1,24,1);
   setup_comparator(NC_NC_NC_NC);
   setup_vref(FALSE);
   enable_interrupts(GLOBAL);
   enable_interrupts(INT_TIMER2);
   
   do{
      pwm=10;
      u_delay(1000);
      pwm=0;
      u_delay(1000);
   }while(1);

}

void u_delay(int i)