#include <16F877.h>
#device adc=8
#use delay(clock=20000000)
#fuses NOWDT,HS, NOPUT, NOPROTECT, BROWNOUT, NOLVP, NOCPD, NOWRT, NODEBUG
#use rs232(baud=9600,parity=N,xmit=PIN_C6,rcv=PIN_C7,bits=9)

int8 value;
void main()
{

   setup_adc_ports(AN0);
   setup_adc(ADC_CLOCK_INTERNAL);
   setup_psp(PSP_DISABLED);
   setup_spi(FALSE);
   setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
   setup_timer_1(T1_DISABLED);
   setup_timer_2(T2_DIV_BY_1,255,1);
   setup_ccp1(CCP_PWM);
   set_pwm1_duty (127);
   while(1)
   {
     set_adc_channel(0);
     delay_us(10);
     value = read_adc();
     set_pwm1_duty (value);
   }

}