#include <avr/io.h> /* Hardware-Definitionen */
#include <util/delay.h>
#include <stdint.h>  /* Für uint8_t */
#include "keys.h" /* Notennummern und -dauern */

/* Anzahl der Einzelschritte in der Melodie */
#define NOTE_COUNT 71

/* Tempo in Schlägen pro Minute */
#define TEMPO 103


uint8_t note_pitches[NOTE_COUNT] = {
	KEY_G3, KEY_G3, KEY_G3, KEY_Eb3, KEY_Bb3,
	KEY_G3, KEY_Eb3, KEY_B3, KEY_G3,
	KEY_D4, KEY_D4, KEY_D4, KEY_Eb4, KEY_Bb3,
	KEY_Gb3, KEY_Eb3, KEY_Bb3, KEY_G3, 

	KEY_G4, KEY_G3, KEY_G3, KEY_G4, KEY_Fis4, KEY_F4, 
	KEY_E4, KEY_Dis4, KEY_E4, PAUSE, KEY_Gis3, KEY_Cis4, KEY_C4, KEY_B3,
	KEY_Bb3, KEY_A3, KEY_Bb3, PAUSE, KEY_Eb3, KEY_Gb3, KEY_Eb3, KEY_Gb3,
	KEY_G3, KEY_G3, KEY_Bb3, KEY_D4,

	KEY_G4, KEY_G3, KEY_G3, KEY_G4, KEY_Fis4, KEY_F4, 
	KEY_E4, KEY_Dis4, KEY_E4, PAUSE, KEY_Gis3, KEY_Cis4, KEY_C4, KEY_B3,
	KEY_Bb3, KEY_A3, KEY_Bb3, PAUSE, KEY_Eb3, KEY_Gb3, KEY_Eb3, KEY_Bb3,

	KEY_G3, KEY_Eb3, KEY_Bb3, KEY_G3,
	
	PAUSE
};

/* Tonlängen (in 1/48-Noten) */
uint8_t note_durations[NOTE_COUNT] = {
	DUR_4th, DUR_4th, DUR_4th, DUR_8th_dot, DUR_16th,
	DUR_4th, DUR_8th_dot, DUR_16th, DUR_half,
	DUR_4th, DUR_4th, DUR_4th, DUR_8th_dot, DUR_16th,
	
	DUR_4th, DUR_8th_dot, DUR_16th, DUR_half,
	DUR_4th, DUR_8th_dot, DUR_16th, DUR_4th, DUR_8th_dot, DUR_16th,
	DUR_16th, DUR_16th, DUR_8th, DUR_8th, DUR_8th, DUR_4th, DUR_8th_dot, DUR_16th,
	
	DUR_16th, DUR_16th, DUR_8th, DUR_8th, DUR_8th, DUR_4th, DUR_8th_dot, DUR_16th,
	DUR_4th, DUR_8th_dot, DUR_16th, DUR_half,
	DUR_4th, DUR_8th_dot, DUR_16th, DUR_4th, DUR_8th_dot, DUR_16th,
	
	DUR_16th, DUR_16th, DUR_8th, DUR_8th, DUR_8th, DUR_4th, DUR_8th_dot, DUR_16th,
	DUR_16th, DUR_16th, DUR_8th, DUR_8th, DUR_8th, DUR_4th, DUR_8th_dot, DUR_16th,
	DUR_4th, DUR_8th_dot, DUR_16th, DUR_half,
	
	DUR_whole
};

int main(int argc, char** argv) {


  // Tasterpin als Eingang konfigurieren
  DDRD &= ~(1 << 6);
  // Pull-up Widerstand für den Taster aktivieren
  PORTD |= (1 << 6);

  int i = 2;

  bool pressed = false;

  while (1) {

    if (!(PIND & (1 << 6))) {
      pressed = true;
    }

    if(pressed) {

      DDRD = (1<<i);

      PORTD |= (1<<i); /* LED an */
      _delay_ms(250); /* 500ms warten */
      PORTD &= ~(1<<i); /* LED aus */
      _delay_ms(250); /* 500ms warten */
      
      i++;

      if(i == 6) {
        i = 2;
        pressed = false;
      }
    }
    
  }
  return 0; 
}