Unopad - Arduino MIDI Controller with Ableton

1#include "Buttons.h"
2
3//------Notes-------------
4#define NOTE_ONE   36
5#define NOTE_TWO 37
6#define NOTE_THREE 38
7#define NOTE_FOUR 39
8#define   NOTE_FIVE 40
9#define NOTE_SIX 41
10#define NOTE_SEVEN 42
11#define NOTE_EIGHT   43
12#define NOTE_NINE 44
13
14#define NOTE_ON_CMD 0x90
15#define NOTE_OFF_CMD   0x80
16#define MAX_MIDI_VELOCITY 127
17
18//------------------------
19
20int   NUMBER_BUTTONS = 9;
21
22Button Button1(4, NOTE_ONE);
23Button Button2(3, NOTE_TWO);
24Button   Button3(2, NOTE_THREE);
25Button Button4(7, NOTE_FOUR);
26Button Button5(6, NOTE_FIVE);
27Button   Button6(5, NOTE_SIX);
28Button Button7(10, NOTE_SEVEN);
29Button Button8(9, NOTE_EIGHT);
30Button   Button9(8, NOTE_NINE);
31
32Button *Buttons[] {&Button1,&Button2,&Button3,&Button4,&Button5,&Button6,&Button7,&Button8,&Button9};
33
34
35int   red_light_pin= 11;
36int green_light_pin = 12;
37int blue_light_pin = 13;
38
39
40void   setup() {
41   Serial.begin(9600);
42}
43
44void loop() {
45  if (NUMBER_BUTTONS   != 0) updateButtons();
46}
47
48void updateButtons() {
49
50  for (int i =   0; i < NUMBER_BUTTONS; i++) {
51      int state = Buttons[i]->getButtonState();
52       
53      //  Button is pressed     
54      if (state == 0) 
55      {
56          midiNoteOn(Buttons[i]->Note,127);
57      }
58  
59      //  Button   is not pressed
60      if (state == 1) 
61  	  {
62  		   midiNoteOff(Buttons[i]->Note,0);   
63      }
64  }
65}
66
67
68void RGB_color(int red_light_value, int green_light_value,   int blue_light_value)
69 {
70  analogWrite(red_light_pin, red_light_value);
71   analogWrite(green_light_pin, green_light_value);
72  analogWrite(blue_light_pin,   blue_light_value);
73}
74
75// Send MIDI note ON
76void midiNoteOn(byte note,   byte midiVelocity)
77{
78  Serial.write(NOTE_ON_CMD);
79  Serial.write(note);
80   Serial.write(midiVelocity);
81}
82
83//Send MIDI note OFF
84void midiNoteOff(byte   note, byte midiVelocity)
85{
86  Serial.write(NOTE_OFF_CMD);
87  Serial.write(note);
88   Serial.write(midiVelocity);
89}

1#ifndef Buttons_h
2#define Buttons_h
3
4#include <Arduino.h>
5
6//Button   (Pin Number, Note Number)
7class Button
8{
9  public:
10    Button(int pin,   short note);
11    int getButtonState();
12    int Note;
13   
14  private:
15     int _pin;
16    short _note;
17    int _state;
18    int _lastState;
19};
20
21#endif

1#include "Buttons.h"
2
3//------Notes-------------
4#define NOTE_ONE  36
5#define NOTE_TWO 37
6#define NOTE_THREE 38
7#define NOTE_FOUR 39
8#define  NOTE_FIVE 40
9#define NOTE_SIX 41
10#define NOTE_SEVEN 42
11#define NOTE_EIGHT  43
12#define NOTE_NINE 44
13
14#define NOTE_ON_CMD 0x90
15#define NOTE_OFF_CMD  0x80
16#define MAX_MIDI_VELOCITY 127
17
18//------------------------
19
20int  NUMBER_BUTTONS = 9;
21
22Button Button1(4, NOTE_ONE);
23Button Button2(3, NOTE_TWO);
24Button  Button3(2, NOTE_THREE);
25Button Button4(7, NOTE_FOUR);
26Button Button5(6, NOTE_FIVE);
27Button  Button6(5, NOTE_SIX);
28Button Button7(10, NOTE_SEVEN);
29Button Button8(9, NOTE_EIGHT);
30Button  Button9(8, NOTE_NINE);
31
32Button *Buttons[] {&Button1,&Button2,&Button3,&Button4,&Button5,&Button6,&Button7,&Button8,&Button9};
33
34
35int  red_light_pin= 11;
36int green_light_pin = 12;
37int blue_light_pin = 13;
38
39
40void  setup() {
41   Serial.begin(9600);
42}
43
44void loop() {
45  if (NUMBER_BUTTONS  != 0) updateButtons();
46}
47
48void updateButtons() {
49
50  for (int i =  0; i < NUMBER_BUTTONS; i++) {
51      int state = Buttons[i]->getButtonState();
52      
53      //  Button is pressed     
54      if (state == 0) 
55      {
56         midiNoteOn(Buttons[i]->Note,127);
57      }
58  
59      //  Button  is not pressed
60      if (state == 1) 
61  	  {
62  		   midiNoteOff(Buttons[i]->Note,0);  
63      }
64  }
65}
66
67
68void RGB_color(int red_light_value, int green_light_value,  int blue_light_value)
69 {
70  analogWrite(red_light_pin, red_light_value);
71  analogWrite(green_light_pin, green_light_value);
72  analogWrite(blue_light_pin,  blue_light_value);
73}
74
75// Send MIDI note ON
76void midiNoteOn(byte note,  byte midiVelocity)
77{
78  Serial.write(NOTE_ON_CMD);
79  Serial.write(note);
80  Serial.write(midiVelocity);
81}
82
83//Send MIDI note OFF
84void midiNoteOff(byte  note, byte midiVelocity)
85{
86  Serial.write(NOTE_OFF_CMD);
87  Serial.write(note);
88  Serial.write(midiVelocity);
89}

1#ifndef Buttons_h
2#define Buttons_h
3
4#include <Arduino.h>
5
6//Button  (Pin Number, Note Number)
7class Button
8{
9  public:
10    Button(int pin,  short note);
11    int getButtonState();
12    int Note;
13   
14  private:
15    int _pin;
16    short _note;
17    int _state;
18    int _lastState;
19};
20
21#endif

1#include "Buttons.h"
2
3
4Button::Button(int pin, short note)
5{
6  _pin = pin;
7  pinMode(_pin, INPUT_PULLUP);
8  _state = 1;
9  _lastState  = 1;
10  Note = note;
11}
12
13
14int Button::getButtonState()
15{
16   int  returnValue = -1;
17   int state = digitalRead(_pin);
18    
19    if(state ==  _lastState)
20      return 5;
21   if(state!= _lastState)
22   {
23        if(state  == 0)
24         {
25            returnValue = 0;       
26         }
27         else
28         {
29            returnValue = 1;
30         }
31   }
32
33   _lastState  = state;
34
35   return returnValue;
36}