main.c

#include "include/mcu.h"
#include "include/game.h"

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

#include "peripherals/include/led.h"
#include "peripherals/include/button.h"
#include "peripherals/include/speaker.h"
#include "peripherals/include/rtc.h"

/*
 * Setup hardware peripherals
 */
void setup()
{
	led_init();
	speaker_init();
	
	/* Register handler functions for buttons */
	button_init(&button_pressed, &button_released);
	
	/* Register handler function for RTC effects */
	rtc_init(&game_led_effect_update);
	rtc_set_timeout(LED_EFFECT_TIMEOUT);
	
	sei();
	set_sleep_mode(SLEEP_MODE_STANDBY);	
}

/*
 * Main function called upon reset
 */
int main(void)
{
	setup();
	
	while (1) {
		/* Put CPU in sleep immediately, awake by button depressing */
		sleep_mode();
		
		if(!game_is_running()) {
			int start_status = game_is_ready_to_start();
			
			/* Both starting buttons are not pressed */
			if (start_status == NOT_READY)
				continue;
				
			_delay_ms(BUTTON_START_TIMEOUT);
			
			/* Check if buttons are still pressed after timeout */
			if (start_status == game_is_ready_to_start()) {
				switch (start_status) {
					case READY_EASY:
						game_start(EASY);
						break;
					case READY_HARD:
						game_start(HARD);
						break;
				}
			}
		}		
	}
}