#include <Servo.h>
#define SET0(REG,BIT) REG &= ~(1<<BIT)
#define SET1(REG,BIT) REG |= (1<<BIT)
int vysledok;
  Servo servo;


void setup() {

  // put your setup code here, to run once: an analog write
  analogWrite(9, 128);
  Serial.begin(9600);
  servo.attach(9);


    SET0(ADMUX,REFS1); // voľba Aref
   SET0(ADMUX,REFS0);
   SET0(ADMUX,ADLAR); // zarovnanie nadol
   SET0(ADMUX,MUX0); // ADC0 A0
   SET1(ADCSRA,ADEN); // zapnutie ADC
   SET1(ADCSRA,ADATE); // spúšťanie automaticky
   SET1(ADCSRA,ADIE); // generovanie prerušenia
   SET1(SREG,7); //istič
   SET1(ADCSRA,ADPS2); // voľba preddeličky 128 
   SET1(ADCSRA,ADPS1);
   SET1(ADCSRA,ADPS0);
 //  SET1(ADCSRA,ADSC); // začatie konverzie
}

void loop() {
  // put your main code here, to run repeatedly:

}

ISR(PCINT0_vect) {
   SET1(ADCSRA,ADSC); // začatie konverzie

}

ISR(ADC_vect) {

  vysledok = ADCL;
  vysledok = vysledok | (ADCH<<8); 
   Serial.println(vysledok);
   servo.write(map(vysledok,0, 1023, 0, 180));
  


}