#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/atomic.h>
#include <util/delay.h>
#include <stdint.h>



#define LIGHT_DAY       _BV(PC0)
#define LIGHT_BRAKE     _BV(PC1)
#define LIGHT_DIR_R     _BV(PC2)
#define LIGHT_REV       _BV(PC3)
#define LIGHT_DIR_L     _BV(PC4)
#define LIGHT_STROBO_L  _BV(PC5)
#define LIGHT_STROBO_R  _BV(PC6)
#define LIGHT_NIGHT     _BV(PC7)



#define SET_LIGHTS(LIGHTS)  PORTC |= (LIGHTS);
#define CLR_LIGHTS(LIGHTS)  PORTC &= ~(LIGHTS);



typedef uint8_t Time;



volatile Time systemTime = 0;



ISR(TIMER1_COMPA_vect){
    systemTime++;
}



void initAll(){
    DDRC = 0xFF;

    // system clock
    TCCR1B = _BV(WGM12) | _BV(CS12);
    TCNT1  = 0;
    OCR1A  = 31250;
    TIMSK  = _BV(OCIE1A);

    sei();
}



int main(){
    initAll();

    while(1){
        PORTC = systemTime;
    }

    return 0;
}