arduino-sound-programmer.ino

#include <Wire.h>
#include <LCD_I2C.h>
#include "notes.h"

const static int pinUp PROGMEM = 4;
const static int pinLeft PROGMEM = 8;
const static int pinRight PROGMEM = 10;
const static int pinDown PROGMEM = 12;
const static int pinLengthUp PROGMEM = 11;
const static int pinLengthDown PROGMEM = 9;
const static int pinPlay PROGMEM = 6;
const static int pinSpeaker PROGMEM = 2;
const static int melodyLength PROGMEM = 100;
const static int standardNote PROGMEM = 0;
const static int standardLength PROGMEM = 4;
const static int maxLength PROGMEM = 16;
const static int pauseBetweenNotes PROGMEM = 50;
const static int BPM PROGMEM = 130;
const static int debounceTime PROGMEM = 200;
const static int debounceTimeNote PROGMEM = 100;

int selNote = 0;

typedef struct
{
  int note;
  int length;
} melody;

melody Melody[melodyLength + 1];

byte arrowLeft[8] = {
    B00010,
    B00110,
    B01110,
    B11110,
    B01110,
    B00110,
    B00010,
    B00000};

byte arrowRight[8] = {
    B01000,
    B01100,
    B01110,
    B01111,
    B01110,
    B01100,
    B01000,
    B00000};

LCD_I2C lcd(0x3F, 16, 2);
//LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup()
{
  Serial.begin(250000);
  Serial.println("Starting!");
  pinMode(pinUp, INPUT);
  pinMode(pinLeft, INPUT);
  pinMode(pinRight, INPUT);
  pinMode(pinDown, INPUT);
  pinMode(pinLengthUp, INPUT);
  pinMode(pinLengthDown, INPUT);
  pinMode(pinPlay, INPUT);
  for (int i = 0; i <= melodyLength; i++)
  {
    Melody[i].note = standardNote;
    Melody[i].length = standardLength;
  };
  if (digitalRead(pinLengthDown) == HIGH)
  {
    for (int i = 0; i <= 90; i++)
    {
      Melody[i].note = i;
      Melody[i].length = standardLength;
    };
  }
  if (digitalRead(pinDown) == HIGH)
  {
    for (int i = 0; i <= 90; i++)
    {
      Melody[i].note = i;
      Melody[i].length = i;
    };
  }
  lcd.begin();
  lcd.backlight();
  lcd.createChar(0, arrowLeft);
  lcd.createChar(1, arrowRight);
  drawLCD();
}
void loop()
{
  if (digitalRead(pinUp) == HIGH && Melody[selNote].note < 90)
  {
    Melody[selNote].note++;
    drawLCD();
    delay(debounceTimeNote);
  }
  else if (digitalRead(pinDown) == HIGH && Melody[selNote].note > 0)
  {
    Melody[selNote].note--;
    drawLCD();
    delay(debounceTimeNote);
  }
  else if (digitalRead(pinLeft) == HIGH && selNote > 0)
  {
    selNote--;
    drawLCD();
    delay(debounceTime);
  }
  else if (digitalRead(pinRight) == HIGH && selNote < melodyLength)
  {
    selNote = selNote + 1;
    drawLCD();
    delay(debounceTime);
  }
  else if (digitalRead(pinLengthUp) == HIGH && Melody[selNote].length < maxLength)
  {
    Melody[selNote].length++;
    drawLCD();
    delay(debounceTime);
  }
  else if (digitalRead(pinLengthDown) == HIGH && Melody[selNote].length > 0)
  {
    Melody[selNote].length--;
    drawLCD();
    delay(debounceTime);
  }
  else if (digitalRead(pinPlay) == HIGH)
  {
    playMelody();
    drawLCD();
    delay(debounceTime);
  }
}

void drawLCD()
{
  if (selNote > 0)
  {
    lcd.setCursor(0, 0);
    lcd.write(byte(0));
    lcd.setCursor(2, 0);
    lcd.print(Notes[Melody[selNote - 1].note].name);
  }
  else
  {
    lcd.setCursor(0, 0);
    lcd.print(F("     "));
  }
  lcd.setCursor(6, 0);
  lcd.print(Notes[Melody[selNote].note].name);
  if (selNote < melodyLength)
  {
    lcd.setCursor(16, 0);
    lcd.write(byte(1));
    lcd.setCursor(10, 0);
    lcd.print(Notes[Melody[selNote + 1].note].name);
  }
  else
  {
    lcd.setCursor(10, 0);
    lcd.print(F("      "));
  }
  lcd.setCursor(0, 1);
  lcd.print(F("L:"));
  lcd.print(Melody[selNote].length);
  lcd.print(F(" "));
  lcd.setCursor(5, 1);
  lcd.print(selNote);
  lcd.print(F("/"));
  lcd.print(melodyLength);
  lcd.print(F("  "));
  lcd.setCursor(7, 0);
}

void playMelody()
{
  for (int i = 0; i <= melodyLength; i++)
  {
    selNote = i;
    if (Melody[selNote].note != 0)
    {
      drawLCD();
      delay(pauseBetweenNotes);
      tone(pinSpeaker, Notes[Melody[selNote].note].pitch);
      delay(((60.0 / BPM) / Melody[selNote].length) * 1000);
      noTone(pinSpeaker);
    }
  }
  selNote = 0;
}