piecdwac

//Cezary Zaprawa
//Jedna dioda swieci 500/2000ms
//Co kliknięcie przycisku animacja jest wykonywana na kolejnych diodach
//Częstotliwość: 1MHz

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

#define BUTTON_MASK (1<<PD2)
#define BUTTON_PIN PIND
#define BUTTON_PORT PORTD

volatile uint8_t button_down;

volatile int int0Counter = 1;
volatile uint8_t counterHolder = 1;

ISR(TIMER0_OVF_vect) {
    static uint8_t count = 0;
    static uint8_t button_state = 0;
    uint8_t current_state = (~BUTTON_PIN & BUTTON_MASK) != 0;
    if (current_state != button_state) {
        count++;
        if (count >= 4) {
            button_state = current_state;
            if (current_state != 0)
            button_down = 1;
            count = 0;
        }
        } else {
        count = 0;
    }
}

ISR(INT0_vect) {
    if(button_down) {
        if(counterHolder != 255) {
            int0Counter *= 2;
        } else {
            int0Counter = 1;
            counterHolder = 1;
        }
        counterHolder |= int0Counter;
    }
}

ISR(TIMER1_COMPA_vect) {
    PORTA = 0;
}

ISR(TIMER1_OVF_vect) {
    PORTA |= counterHolder;
}

void init() {
    cli();
    //+++Konfiguracja wyświetlaczy+++
    DDRA |= 0xFF;
    DDRB |= 0xFF;
    //+++Konfiguracja przerwania INT0+++
    PORTD |= (1 << PD2);
    MCUCR |= (1 << ISC01);
    GICR |= (1 << INT0);
    //+++Konfiguracja timera0+++
    TCCR0 |= (1 << WGM01);
    TIMSK |= (1 << TOIE0);
    OCR0 = 98;
    //+++Konfiguracja Timera1+++
    OCR1A = 7813;
    ICR1 = 31250;
    TCCR1B |= (1 << WGM12) | (1 << WGM13);
    TCCR1A |= (1 << WGM11);
    TCCR1B |= (1 << CS11) | (1 << CS10);
    TIMSK |= (1 << OCIE1A) | (1 << TOIE1);
    sei();
}
int main(void) {
    init();
    while(1) {
        PORTB = TCNT0;
    }
}