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Merge pull request #1 from ghostintranslation/add-midi-support
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Add midi support
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@ghostintranslation
ghostintranslation authored Apr 15, 2021
2 parents 96c5bef + c5ec264 commit 3e6b6bc
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Showing 5 changed files with 759 additions and 118 deletions.
159 changes: 139 additions & 20 deletions Drone/Drone.h
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Original file line number Diff line number Diff line change
Expand Up @@ -26,17 +26,25 @@ class Drone{
elapsedMillis clockUpdate;

AudioConnection* patchCords[4];
AudioMixer4 *output;
AudioMixer4 *outputLeft;
AudioMixer4 *outputRight;

public:
static Drone *getInstance();
void init();
void update();
// Inputs callbacks
static void onTuneChange(byte inputIndex, unsigned int value, int diffToPrevious);
static void onMixChange(byte inputIndex, unsigned int value, int diffToPrevious);
static void onFmChange(byte inputIndex, unsigned int value, int diffToPrevious);
AudioMixer4 * getOutput();

// Midi callbacks
static void onMidiTuneChange(byte channel, byte control, byte value);
static void onMidiMixChange(byte channel, byte control, byte value);
static void onMidiFmChange(byte channel, byte control, byte value);
static void onMidiPanChange(byte channel, byte control, byte value);
// Audio output
AudioMixer4 * getOutputLeft();
AudioMixer4 * getOutputRight();
};

// Singleton pre init
Expand All @@ -49,15 +57,23 @@ inline Drone::Drone(){

this->device = Motherboard6::getInstance();

this->output = new AudioMixer4();
this->output->gain(0, 1 );
this->output->gain(1, 1 );
this->output->gain(2, 1 );
this->output->gain(3, 1 );
this->outputLeft = new AudioMixer4();
this->outputLeft->gain(0, 1 );
this->outputLeft->gain(1, 1 );
this->outputLeft->gain(2, 1 );
this->outputLeft->gain(3, 1 );

this->outputRight = new AudioMixer4();
this->outputRight->gain(0, 1 );
this->outputRight->gain(1, 1 );
this->outputRight->gain(2, 1 );
this->outputRight->gain(3, 1 );

for (int i = 0; i < this->voiceCount; i++) {
this->voices[i] = new Voice();
this->patchCords[i] = new AudioConnection(*this->voices[i]->getOutput(), 0, *this->output, i);
this->voices[i]->setUpdateMillis(this->updateMillis);
this->patchCords[i] = new AudioConnection(*this->voices[i]->getOutputLeft(), 0, *this->outputLeft, i);
this->patchCords[i] = new AudioConnection(*this->voices[i]->getOutputRight(), 0, *this->outputRight, i);
}

}
Expand All @@ -75,9 +91,14 @@ inline Drone *Drone::getInstance() {
* Init
*/
inline void Drone::init(){
// 0 = empty, 1 = button, 2 = potentiometer, 3 = encoder
byte controls[9] = {2,2, 2,2, 2,2};
this->device->init(controls);
device->init(
"Drone",
{
Potentiometer, Potentiometer,
Potentiometer, Potentiometer,
Potentiometer, Potentiometer
}
);

// Device callbacks
this->device->setHandlePotentiometerChange(0, onTuneChange);
Expand All @@ -86,28 +107,58 @@ inline void Drone::init(){
this->device->setHandlePotentiometerChange(3, onTuneChange);
this->device->setHandlePotentiometerChange(4, onMixChange);
this->device->setHandlePotentiometerChange(5, onFmChange);

// MIDI callbacks
device->setHandleMidiControlChange(0, 0, "Tune 1", onMidiTuneChange);
device->setHandleMidiControlChange(0, 1, "Tune 2", onMidiTuneChange);
device->setHandleMidiControlChange(0, 2, "Tune 3", onMidiTuneChange);
device->setHandleMidiControlChange(0, 3, "Tune 4", onMidiTuneChange);
device->setHandleMidiControlChange(0, 4, "Mix", onMidiMixChange);
device->setHandleMidiControlChange(0, 5, "FM", onMidiFmChange);
device->setHandleMidiControlChange(0, 6, "Pan 1", onMidiPanChange);
device->setHandleMidiControlChange(0, 7, "Pan 2", onMidiPanChange);
device->setHandleMidiControlChange(0, 8, "Pan 3", onMidiPanChange);
device->setHandleMidiControlChange(0, 9, "Pan 4", onMidiPanChange);
}


/**
* Return the audio output
* Return the audio left output
*/
inline AudioMixer4 * Drone::getOutput(){
return this->output;
inline AudioMixer4 * Drone::getOutputLeft(){
return this->outputLeft;
}

/**
* Return the audio right output
*/
inline AudioMixer4 * Drone::getOutputRight(){
return this->outputRight;
}

/**
* Update
*/
inline void Drone::update(){
this->device->update();

if(this->clockUpdate > updateMillis){
for (int i = 0; i < voiceCount ; i++) {
this->voices[i]->update();
}

this->clockUpdate = 0;
}
}

/**
* On Tune Change
*/
inline void Drone::onTuneChange(byte inputIndex, unsigned int value, int diffToPrevious){
if(diffToPrevious >= -1 && diffToPrevious <= 1){
return;
}

unsigned int freq = (float)map(
(float)value,
getInstance()->device->getAnalogMinValue(),
Expand All @@ -119,10 +170,30 @@ inline void Drone::onTuneChange(byte inputIndex, unsigned int value, int diffToP
getInstance()->voices[inputIndex]->setFrequency(freq);
}


/**
* On MIDI Tune Change
*/
void Drone::onMidiTuneChange(byte channel, byte control, byte value){
unsigned int mapValue = map(
value,
0,
127,
getInstance()->device->getAnalogMinValue(),
getInstance()->device->getAnalogMaxValue()
);

getInstance()->onTuneChange(control, mapValue, 255);
}

/**
* On Mix Change
*/
inline void Drone::onMixChange(byte inputIndex, unsigned int value, int diffToPrevious){
if(diffToPrevious >= -1 && diffToPrevious <= 1){
return;
}

float mix = (float)map(
(float)value,
getInstance()->device->getAnalogMinValue(),
Expand All @@ -136,22 +207,40 @@ inline void Drone::onMixChange(byte inputIndex, unsigned int value, int diffToPr
float voice3Gain = constrain(100*cos(mix+0.5*PI) + pow(mix,2), 0, 100);
float voice4Gain = constrain(100*cos(mix+PI) + pow(mix,2), 0, 100);

getInstance()->output->gain(0, voice1Gain/400);
getInstance()->output->gain(1, voice2Gain/400);
getInstance()->output->gain(2, voice3Gain/400);
getInstance()->output->gain(3, voice4Gain/400);
getInstance()->voices[0]->setGain(voice1Gain/400);
getInstance()->voices[1]->setGain(voice2Gain/400);
getInstance()->voices[2]->setGain(voice3Gain/400);
getInstance()->voices[3]->setGain(voice4Gain/400);

getInstance()->device->setLED(0, 1, 2.5 * voice1Gain);
getInstance()->device->setLED(1, 1, 2.5 * voice2Gain);
getInstance()->device->setLED(2, 1, 2.5 * voice3Gain);
getInstance()->device->setLED(3, 1, 2.5 * voice4Gain);
}

/**
* On MIDI Mix Change
*/
inline void Drone::onMidiMixChange(byte channel, byte control, byte value){
unsigned int mapValue = map(
value,
0,
127,
getInstance()->device->getAnalogMinValue(),
getInstance()->device->getAnalogMaxValue()
);

getInstance()->onMixChange(0, mapValue, 255);
}

/**
* On Fm Change
*/
inline void Drone::onFmChange(byte inputIndex, unsigned int value, int diffToPrevious){

if(diffToPrevious >= -1 && diffToPrevious <= 1){
return;
}

int modulatorFrequency = 0;
float modulatorAmplitude = 0;

Expand Down Expand Up @@ -182,4 +271,34 @@ inline void Drone::onFmChange(byte inputIndex, unsigned int value, int diffToPre
}
}

/**
* On MIDI Fm Change
*/
inline void Drone::onMidiFmChange(byte channel, byte control, byte value){
unsigned int mapValue = map(
value,
0,
127,
getInstance()->device->getAnalogMinValue(),
getInstance()->device->getAnalogMaxValue()
);

getInstance()->onFmChange(0, mapValue, 255);
}

/**
* On MIDI Pan Change
*/
inline void Drone::onMidiPanChange(byte channel, byte control, byte value){
byte pan = map(
value,
0,
127,
0,
255
);

byte inputIndex = control - 6;
getInstance()->voices[inputIndex]->setPan(pan);
}
#endif
8 changes: 4 additions & 4 deletions Drone/Drone.ino
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
\_|| |\_/__) | _|_| | | | \| || |__)|__| | | _|_\_/| |
DRONE
v1.1.0
If you enjoy my work and music please consider donating.
Expand All @@ -16,15 +17,14 @@ https://github.com/ghostintranslation

#include <Audio.h>

#include "Motherboard6.h"
#include "Drone.h"

// Instanciation of Drone
Drone * drone = Drone::getInstance();

AudioOutputI2S i2s2;
AudioConnection patchCord1(*drone->getOutput(), 0, i2s2, 0);
AudioConnection patchCord2(*drone->getOutput(), 0, i2s2, 1);
AudioConnection patchCord1(*drone->getOutputLeft(), 0, i2s2, 0);
AudioConnection patchCord2(*drone->getOutputRight(), 0, i2s2, 1);
AudioControlSGTL5000 audioBoard;

void setup() {
Expand All @@ -36,7 +36,7 @@ void setup() {
AudioMemory(40);

audioBoard.enable();
audioBoard.volume(0.2);
audioBoard.volume(0.4);

while (!Serial && millis() < 2500); // wait for serial monitor

Expand Down
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