/********************************************************************************
						Includes
********************************************************************************/
#include <avr/io.h>
#include <stdbool.h>

/********************************************************************************
						Main
********************************************************************************/
int main(void) {
	// configure PORTA as output
	DDRA = 0xFF;
	// configure PORTB as input
	DDRB = 0;
	// make sure PORTB is high impedance and will not source
	PORTB = 0;
	// main loop
	while (true) {
		if (~PINB & (1 << PB0)) {
			// turn on every other light on PORTA, inverse logic
			PORTA = 0xAA;
		} else if (~PINB & (1 << PB1)) {
			// turn on the lower 4 lights light on PORTA, inverse logic
			PORTA = 0xF0;
		} else {
			// default case, all lights off on PORTA, inverse logic
			PORTA = 0xFF;
		}
	}
}