#include "config.h"
#include "Port.h"
#include <stdio.h>
#include <avr/interrupt.h>

#define SET_LED() PORTB &= ~_BV(LEDPIN)
#define CLR_LED() PORTB |= _BV(LEDPIN)

#define DELAY_1S  15

void inline io_init(void)
{
    PORTB |= _BV(LEDPIN); 			//HIGH
    DDRB |= _BV(LEDPIN);  			//OUTPUT
}

void inline timer0_init(void)
{
    TCNT0 = 0;
    TCCR0 = _BV(CS02)|_BV(CS00); 	//FCLK i/o/1024

    TIMSK |= _BV(TOV0);
}


void inline interrupt_set(void)
{
    sei();
}

void inline blinky(void)
{
    static uint8 led_flag=0;
    if (led_flag)
    {
        led_flag = 0;
        SET_LED();
    }
    else
    {
        led_flag=1;
        CLR_LED();
    }
}

SIGNAL(SIG_OVERFLOW0)
{
    static uint8 timer_count=0;
    timer_count++;
    if (timer_count==(DELAY_1S-1))
    {
        timer_count=0;
        blinky();
    }
}
int main(void)
{
    io_init();
    timer0_init();
    interrupt_set();

    while (1)
    {
    }
}