#include<avr/io.h> 

uint8_t leds_on_off_DDR[5] = {0xFB, 0xFB, 0xFE, 0xFE, 0xFD};
uint8_t leds_on_off[5] = {(0xFD<<PF0), (0xFE<<PF0), (0xFB<<PF0), (0xFD<<PF0), (0xFB<<PF0)};


typedef enum {
	led1=0,
	led2,
	led3,
	led4,
	led5
}  leds;

void io_init () {
	
	DDRF = 0x07;
	PORTF = 0xF8;
	
}

void Delay(void ) {
  volatile cnt = 16000;
  while (cnt--){
    asm("nop");
  }
}


void turn_on_led () {
	
  DDRF = 0x07;
	PORTF = 0xF8;

  if (PINF!=0xF8) {
		
		if (!((PINF>>PINF3)&1)) {
			
			DDRF = leds_on_off_DDR[ led1 ];
			PORTF = leds_on_off[ led1 ];
		}
		else if (!( PINF &(1<<PINF4) )) {

			DDRF = leds_on_off_DDR[ led2 ];
			PORTF = leds_on_off[ led2 ];
		}
		else if (!( PINF &(1<<PINF5) )) {
			
			DDRF = leds_on_off_DDR[ led3 ];
			PORTF = leds_on_off[ led3 ];
		}
		
		else if (!( PINF &(1<<PINF6) )) {

			DDRF = leds_on_off_DDR[ led4 ];
			PORTF = leds_on_off[ led4 ];
		}
		else if (!( PINF &(1<<PINF7) )) {
			
			DDRF = leds_on_off_DDR[ led5 ];
			PORTF = leds_on_off[ led5 ];
		}
	}
	else {
		DDRF = 0x07;
		PORTF = 0xF8;
	}
}

void main() {
	io_init();
	while (1) {
		turn_on_led();
    Delay();
	}
	
}