#include <Arduino.h>

void setupTimer0(){
  noInterrupts();
    TCCR0A = 0;
    TCCR0B = 0;
    TCNT0 = 0;

  // 16 MHz / (prescale+1)*1024
  OCR0A = 124; 

  TCCR0B |= (1 << WGM02);
  TCCR0B |= (1 << CS02) | (1 << CS00);
  TIMSK0 |= (1 << OCIE0A);
  interrupts();

}

void setupTimer1(){
  noInterrupts();
    TCCR1A = 0;
    TCCR1B = 0;
    TCNT1 = 0;

  // 16 MHz / (prescale+1)*1024
  OCR1A = 7812; 

  TCCR1B |= (1 << WGM12);
  TCCR1B |= (1 << CS12) | (1 << CS10);
  TIMSK1 |= (1 << OCIE1A);
  interrupts();

}

void setup() {
  DDRC = 0xFF; 
  setupTimer0();
  setupTimer1();
}

void loop() {
  PORTC = (1<<PC4) | (1<<PC5) |(1<<PC6) |(1<<PC7);
  delay(2000);
  PORTC = (0<<PC4) | (0<<PC5) |(0<<PC6) |(0<<PC7);
  delay(2000);
  }

ISR(TIMER0_COMPA_vect){
  PORTC ^= (1<<PC2) |(1<<PC3);
}

ISR(TIMER1_COMPA_vect){
  PORTC ^= (1<<PC0) |(1<<PC1);
}