#include "P10Timers.h"
#include "UART0.h"
#include "song.h"
#include <avr/pgmspace.h>

uint32_t button_millis_check = 0;
uint8_t button_id = 0;

uint8_t checkButton ( void ) {
	static uint8_t button_pressed = 0;
	if ( PINF != 0x03) {
		if (((PINF & 1) == 0)) {
			button_id = 0;
		}
		if (((PINF & 2) == 0)) {
			button_id = 1;
		}
		button_pressed ++;
		button_millis_check = check_millis();
		return -1;
	}
	if ( (button_pressed != 0) && ((check_millis() - button_millis_check) > 100)) {
		button_pressed = 0;
		return button_id; 
	}
	return -1;
}


int main(void)
{
	UART0_autobaudrate();
	DDRH = (1 << PH6);
	DDRF = 0x00;
	PORTF = 0x03;
	///no poner en 0, cancion nula
	uint16_t song_index = 1; 
	uint8_t volume = 0;

	Timer0_Ini();

	while(1){

		if (Timer2_Play( pgm_read_word(&song_list[song_index]), pgm_read_word(&song_list[song_index-1]))) {
			if (song_index < 7) {
				song_index++;
			}
			else {
				song_index = 1;
			}
		}
			
			
			//Increase Volume	
			if(UART_getchar() == 'V'){
				Timer2_Volume(1);
			}
			//Decrease Volume
			if(UART_getchar() == 'v'){
				Timer2_Volume(-1);
			}

		switch (checkButton()){
			case 0: 
				if (song_index <= 7){
					song_index++;
				}
				else {
					song_index = 1;
				}
				break;
			case 1: 
				if (song_index > 1){	
					song_index--;
				}
				else {
					song_index = 7;
				}
					break;
			default: 
				asm("nop");
				break;
		}

	}
	return 0;
}