Interrupt LAB WORK 4

/*
 * 3.c
 *
 * Created: 05.11.2019 13:53:30
 * Author : dspproject
 */
#define F_CPU 14745600UL


#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
int x = 0;
int ev = 0;

ISR(TIMER1_COMPA_vect) //subrutina daca interupt
{
    ev = 1;
}

void init_timer()
{
    unsigned value = 18; //asta ii OCR1A , grija la virgula

    OCR1AH = (value >> 8) & 0xFF;  //OCRA impartit in 2 registre => adaugi MSB half aici
    OCR1AL = (value & 0xFF);   //LS half aici

    TCCR1B = 1 << 3; //mode 4
    TCCR1B |= 1 << 1; // clk pt asta trebuie sa fie 1 (CS11 = 1)
    TIMSK |= 1<<4;
/*
    if((OCIE1A & (1<<4)) == 1 ) //verifica daca flagul pt interuperi ii 1
    {
        ISR(TIMER1_COMPA_vect);
    }*/ // nu mai trebuie verificat, fiind flagul setat mai sus, la TIMSK, o sa faca singur subrutina de sus
    //OCR1A = value;
}



int main(void)
{
    sei(); //global enable interrupt function for external events

    DDRB |= 1;
    init_timer();

    while (1)
    {
        if (ev == 1)
        {

                if(!x) //blink-ane corect
                {

                    PORTB |= 1;
                }
                else
                {
                    PORTB = 0;
                }
                x = x ? 0 : 1;
        ev = 0;
        }
        ////
    }
}