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


#define LED_STATUS      PC0  
#define LED_GREEN       PC1
#define LED_RED         PC2
#define BUZZER          PC3
#define RELAIS          PC4


#define LED_STATUS_ON   PORTC &= ~(1 << LED_STATUS)
#define LED_GREEN_ON    PORTC &= ~(1 << LED_GREEN)
#define LED_RED_ON      PORTC &= ~(1 << LED_RED)
#define BUZZER_ON       PORTC &= ~(1 << BUZZER)
#define RELAIS_ON       PORTC &= ~(1 << RELAIS)


#define LED_STATUS_OFF  PORTC |= (1 << LED_STATUS)
#define LED_GREEN_OFF   PORTC |= (1 << LED_GREEN)
#define LED_RED_OFF     PORTC |= (1 << LED_RED)
#define BUZZER_OFF      PORTC |= (1 << BUZZER)
#define RELAIS_OFF      PORTC |= (1 << RELAIS)


#define isStatusLedOn   ((PORTC & (1 << LED_STATUS)) == LED_STATUS)
#define isGREENLedOn    ((PORTC & (1 << LED_GREEN)) == LED_GREEN)
#define isREDLedOn      ((PORTC & (1 << LED_RED)) == LED_RED)
#define isBuzzerOn      ((PORTC & (1 << BUZZER)) == BUZZER)
#define isRelaisOn      ((PORTC & (1 << RELAIS)) == RELAIS)



SIGNAL (SIG_OVERFLOW0) {
	if (isStatusLedOn)
		LED_STATUS_OFF;
	else
		LED_STATUS_ON;
}

void init_hardware(void) {
	DDRC = 0xFF;
	
	TCCR0 = (1 << CS00) | (1 << CS02);
	TIMSK = (1 << TOIE0);
	
	PORTC = 0x02;
}

void main (void) {
	init_hardware();
	sei();
	
	
	while (1) {

		if (isStatusLedOn)
			LED_GREEN_ON;
		else
			LED_GREEN_OFF;

		if(isGREENLedOn)
			LED_RED_ON;
		else
			LED_RED_OFF;

		if(isREDLedOn)
			RELAIS_ON;
		else
			RELAIS_OFF;

		if (isRelaisOn)
			BUZZER_ON;
		else
			BUZZER_OFF;

	}
}