#include <avr/io.h>
#include <avr/delay.h>


int main(void)
{
  uint16_t milisec=0;
  /*
// Nustatome Normal timer rezima WGM00 ir  WGM01 ir WGM02 MANUAL 108psl.
  TCCR0A &= ~((1 << WGM01)|(1 << WGM00)); //Data Direction Register
  TCCR0B &= ~(1 << WGM02); //Data Direction Register

//prescaler 64  MANUAL 110 psl. 
  TCCR0B &= ~(1 << CS02);
  TCCR0B |= (1 << CS01)|(1 << CS00);
  */

  TCCR1B |= (1 << WGM12)|(1 << CS12); //Data Direction Register ijungiam CTC rezima PSL109
  //Prescaler naudojam pagal AVR TImer calculator ir naudojam 256  https://eleccelerator.com/avr-timer-calculator/ ir reiks 62500ticks

  OCR1A = 62500; // uzrasom ticks
//Output
  DDRB |= (1 << DDB1); // nes OC1A yra PB1
  //PSL108 padarom rezima kaip suveikinetu toole
  TCCR1A |= (1 << COM1A0);


while(1)
{
  if(TCNT0>=250) // TCNT0 counteris periodu kas 250 periodu padaris milisec +1;
  {
    milisec++;
    TCNT0=0;
  }
//CTC pasinadojus galima pasidaryti su tusciu mainm tai (79psl.)
  if(milisec ==2000)
  {

    PORTB |= (1 << PORTB5);
    milisec = 0;
  }

  if(milisec ==1000)
  {
    PORTB &=~(1 << PORTB5); 

  }
}

  return 0;
}