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John Park
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Guitar_Hero_MIDI/GuitarHeroMIDI/GuitarHeroMIDI.ino
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134
Guitar_Hero_MIDI/GuitarHeroMIDI/GuitarHeroMIDI.ino
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//Wii Guitar Hero MIDI Controller
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// by John Park for Adafruit Industries
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#include <WiiChuck.h>
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#include <Adafruit_TinyUSB.h>
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#include <MIDI.h>
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Accessory guitar;
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Adafruit_USBD_MIDI usb_midi;
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MIDI_CREATE_INSTANCE(Adafruit_USBD_MIDI, usb_midi, MIDI);
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int MIDI_OUT_CH = 1; // pick your midi output channel here
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bool DEBUG = 0; // set to 1 to use serial monitor to check out controller values
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int whammyBar;
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int joyX;
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int joyY;
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int minusButton; // drop an octave w each press
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int plusButton; // up and octave w each press
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int strumDown;
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int strumUp;
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int fretButtons[5];
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bool minusButtonOn = 0;
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bool plusButtonOn = 0;
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bool strumDownOn = 0;
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bool strumUpOn = 0;
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bool fretButtonOn[] = {0, 0, 0, 0, 0};
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int octave = 12; // note offset value, used to change octaves
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int strumDownChord[] = {36, 40, 43, 45}; //all note values will be offset by octave value
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int strumUpChord[] = {36, 41, 43, 45} ;
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int fretNotes[] = {24, 26, 28, 29, 31};
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int lastWhammy = 16; // Use the resting state value of your whammy bar
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int whammyPitchVal = 8192; // resting position of pitchwheel
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int lastJoyX = 223; // resting value of joyX
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int joyXCCNum = 71; // VCF or whatever you assign in synth software
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int joyXCCVal = 0;
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int lastJoyY = 224; // resting value of joyY
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int joyYCCNum = 72; // VCA
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int joyYCCVal = 0;
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void setup() {
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Serial.begin(115200);
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MIDI.begin(MIDI_CHANNEL_OMNI);
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guitar.begin();
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guitar.type = GuitarHeroController;
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}
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void loop() {
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guitar.readData(); // Read inputs and update maps
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fretButtons[0] = guitar.values[10]; // green
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fretButtons[1] = guitar.values[11]; // red
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fretButtons[2] = guitar.values[12]; // yellow
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fretButtons[3] = guitar.values[13]; //blue
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fretButtons[4] = guitar.values[14]; // orange
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minusButton = guitar.values[6];
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plusButton = guitar.values[16];
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strumDown = guitar.values[7];
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strumUp = guitar.values[7];
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whammyBar = guitar.values[0];
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joyX = guitar.values[20];
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joyY = guitar.values[21];
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for(int i=0;i<5;i++){
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if(fretButtons[i]==255 && fretButtonOn[i]==0){
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MIDI.sendNoteOn(fretNotes[i]+octave, 127, MIDI_OUT_CH);
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fretButtonOn[i] = 1;}
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if(fretButtons[i]==0 && fretButtonOn[i]==1){
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MIDI.sendNoteOff(fretNotes[i]+octave, 0, MIDI_OUT_CH);
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fretButtonOn[i] = 0;}
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}
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if(whammyBar!=lastWhammy){
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whammyPitchVal=map(whammyBar, 15, 26, 8192, 16383); // remap to pitch value range, two semitones here
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MIDI.sendPitchBend(whammyPitchVal, MIDI_OUT_CH);
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lastWhammy=whammyBar;
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}
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if(joyX!=lastJoyX){
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joyXCCVal=map(joyX, 190, 255, 0, 127); // remap to bigger range
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MIDI.sendControlChange(joyXCCNum, joyXCCVal, MIDI_OUT_CH);
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lastJoyX=joyX;
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}
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if(joyY!=lastJoyY){
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joyYCCVal=map(joyY, 190, 255, 0, 127); // remap to bigger range
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MIDI.sendControlChange(joyYCCNum, joyYCCVal, MIDI_OUT_CH);
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lastJoyY=joyY;
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}
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if(minusButton==0 && minusButtonOn==0){
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octave = constrain((octave - 12), 0, 108);
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minusButtonOn = 1;}
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if(minusButton==128 && minusButtonOn==1){
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minusButtonOn = 0;}
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if(plusButton==255 && plusButtonOn==0){
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octave = constrain((octave + 12), 0, 108);
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plusButtonOn = 1;}
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if(plusButton==0 && plusButtonOn==1){
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plusButtonOn = 0;}
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if(strumDown==0 && strumDownOn==0){
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for(int c=0; c<4; c++){
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MIDI.sendNoteOn(strumDownChord[c]+octave, 127, MIDI_OUT_CH);}
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strumDownOn = 1;}
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if(strumDown==128 && strumDownOn==1){
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for(int c=0; c<4; c++){
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MIDI.sendNoteOff(strumDownChord[c]+octave, 0, MIDI_OUT_CH);}
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strumDownOn = 0;}
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if(strumUp==255 && strumUpOn==0){
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for(int c=0; c<4; c++){
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MIDI.sendNoteOn(strumUpChord[c]+octave, 127, MIDI_OUT_CH);}
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strumUpOn = 1;}
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if(strumUp==128 && strumUpOn==1){
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for(int c=0; c<4; c++){
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MIDI.sendNoteOff(strumUpChord[c]+octave, 0, MIDI_OUT_CH);}
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strumUpOn = 0;}
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delay(5);
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if(DEBUG){
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Serial.println("-------------------------------------------");
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guitar.printInputs();
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for (int i = 0; i < WII_VALUES_ARRAY_SIZE+3; i++) {
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Serial.println(
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"Controller Val " + String(i) + " = "
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+ String((uint8_t) guitar.values[i]));
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}
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delay(50); // keeps the terminal from flooding
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}
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}
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