From 3567eee448cbb44cd4f16b9e77ea2ea307f1f709 Mon Sep 17 00:00:00 2001 From: Thiago Hersan Date: Sat, 7 May 2016 15:38:37 -0300 Subject: [PATCH 1/2] 1st try at CV2MIDI --- arduino/CVtoMidi/CVtoMidi.ino | 176 ++++++++++++---------------------- 1 file changed, 62 insertions(+), 114 deletions(-) diff --git a/arduino/CVtoMidi/CVtoMidi.ino b/arduino/CVtoMidi/CVtoMidi.ino index 8eaad58..5fe809c 100644 --- a/arduino/CVtoMidi/CVtoMidi.ino +++ b/arduino/CVtoMidi/CVtoMidi.ino @@ -6,140 +6,88 @@ //CV2 modulación y velocidad //GateIn produce la nota midi -#include // detalles de la libreria: http://arduinomidilib.fortyseveneffects.com/a00015.html +#include +MIDI_CREATE_DEFAULT_INSTANCE(); const int NUM_READINGS = 10; +const int NUM_SENSORS = 3; +const int GATE_THRESHOLD = 100; -int readings1[NUM_READINGS]; -int readings2[NUM_READINGS]; -int readings3[NUM_READINGS]; - -int MyIndexCV1 = 0; // the index of the current reading -int MyIndexCV2 = 0; -int MyIndexGate = 0; - -int total = 0; // the running total -int average = 0;// the average - - -// CV INPUTS -int CV1 = 5; -int CV2 = 6; -int GateIn = 7; +// PINS +int inputPins[NUM_SENSORS] = {5, 6, 7}; -// CV VARIABLE -int CV1val; -int CV2val; -int GateInVal; -int CV1reading; -int CV2reading; -int GateInreading; - -//midi variables -int note; -int modulation; // 14-bit resolution (0-3FFFh) -int pitchBend; //14-bit resolution (0-3FFFh) -int velocity; // velocidad 0 = gateOff otra velocidad = gateOn +// Sensor reading variables +int readings[NUM_SENSORS][NUM_READINGS]; +int readingIndex[NUM_SENSORS]; +int readingSum[NUM_SENSORS]; +int readingAverage[NUM_SENSORS]; +// midi +int lastNoteOn = 0; +bool bNoteOn = 0; void setup() { //envia a todos los canales MIDI.begin(MIDI_CHANNEL_OMNI); - int sum = 0; - - //revisar valores del CV1 input - for (int thisReading = 0; thisReading < NUM_READINGS; thisReading++) - { readings1[thisReading] = 0; - sum = sum + analogRead(CV1);//hacer lectura del sensor; - delay(1); + // init readings + for (int i = 0; i < NUM_SENSORS; i++) { + readingIndex[i] = 0; + readingSum[i] = 0; + readingAverage[i] = 0; + for (int j = 0; j < NUM_READINGS; j++) { + readings[i][j] = analogRead(inputPins[i]); + readingSum[i] += readings[i][j]; + delay(1); + } + readingAverage[i] = readingSum[i] / NUM_READINGS; } - - //revisar valores del CV2 input - for (int thisReading = 0; thisReading < NUM_READINGS; thisReading++) - { readings2[thisReading] = 0; - sum = sum + analogRead(CV2); //hacer lectura dle sensor2 - delay(1); - } - - //revisar valores GateIn - for (int thisReading = 0; thisReading < NUM_READINGS; thisReading++) -{ readings3[thisReading] = 0; -sum = sum + analogRead(GateIn); -delay(1); } -} - void loop() { + // smooth values + for (int i = 0; i < NUM_SENSORS; i++) { + readingSum[i] -= readings[i][readingIndex[i]]; + readings[i][readingIndex[i]] = analogRead(inputPins[i]); + readingSum[i] += readings[i][readingIndex[i]]; + readingIndex[i] += 1; + if (readingIndex[i] >= NUM_READINGS) + readingIndex[i] = 0; + } - CV1reading = analogRead(CV1); - CV2reading = analogRead(CV2); - GateInreading = analogRead(GateIn); - CV1val = map(CV1reading, 0, 1023, 0, 127); - CV2val = map(CV2reading, 0, 1023, 0, 127); - GateInVal = map(GateInreading, 0, 1023, 0, 127); - - - //smothing values CV1 - total = total - readings1[MyIndexCV1]; - readings1[MyIndexCV1] = analogRead(CV1); - total = total + readings1[MyIndexCV1]; - MyIndexCV1 = MyIndexCV1 + 1; - - if (MyIndexCV1 >= NUM_READINGS) - MyIndexCV1 = 0; - - //smothing values CV2 - total = total - readings2[MyIndexCV2]; - readings2[MyIndexCV2] = analogRead(CV2); - total = total + readings2[MyIndexCV2]; - MyIndexCV2 = MyIndexCV2 + 1; - - if (MyIndexCV2 >= NUM_READINGS) - MyIndexCV2 = 0; - - - //smothing values GateIn - total = total - readings3[MyIndexGate]; - readings3[MyIndexGate] = analogRead(GateIn); - total = total + readings3[MyIndexGate]; - MyIndexGate = MyIndexGate + 1; - - if (MyIndexGate >= NUM_READINGS) - MyIndexGate = 0; - - //convertir el valor mapeado a nota - GateInreading = note; - //enviar la nota que se genero con la velocida de CV2 - MIDI.sendNoteOn(note, CV2, MIDI_CHANNEL_OMNI); - delay(100); - MIDI.sendNoteOff(note, CV2, MIDI_CHANNEL_OMNI); - - // const int value = inPitchValue * MIDI_PITCHBEND_MAX * Settings::Toto; - // sendPitchBend(value, inChannel); - - Serial.println(note); - Serial.print("\n note:"); - delay(1); - Serial.println(CV1reading); - Serial.print("\n CV1:"); - delay(1); - Serial.println(CV2reading); - Serial.print("\n CV2:"); - delay(1); - Serial.println(GateInreading); - Serial.print("\n GateIn:"); - delay(1); - - - + // calculate the averages + for (int i = 0; i < NUM_SENSORS; i++) { + readingAverage[i] = readingSum[i] / NUM_READINGS; + } -} + // print values to serial + for (int i = 0; i < NUM_SENSORS; i++) { + Serial.print("\t Sensor["); + Serial.print(i); + Serial.print("]: "); + Serial.print(readingAverage[i]); + } + //convertir el valor de input a nota + int note = map(readingAverage[0], 0, 1023, 0, 127); + int velocity = map(readingAverage[1], 0, 1023, 0, 127); + int GateVal = map(readingAverage[2], 0, 1023, 0, 127); + /// ???? + if ((GateVal >= GATE_THRESHOLD) && (!bNoteOn)) { + MIDI.sendNoteOn(note, velocity, MIDI_CHANNEL_OMNI); + lastNoteOn = note; + bNoteOn = !bNoteOn; + } + else if ((GateVal < GATE_THRESHOLD) && (bNoteOn)) { + note = lastNoteOn; + MIDI.sendNoteOff(note, 0, MIDI_CHANNEL_OMNI); + bNoteOn = !bNoteOn; + } + delay(10); +} From 19b9388b6f34f98c085b536d67a7566d6712d869 Mon Sep 17 00:00:00 2001 From: Thiago Hersan Date: Sat, 7 May 2016 15:39:30 -0300 Subject: [PATCH 2/2] with comment --- arduino/CVtoMidi/CVtoMidi.ino | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arduino/CVtoMidi/CVtoMidi.ino b/arduino/CVtoMidi/CVtoMidi.ino index 5fe809c..b8b7319 100644 --- a/arduino/CVtoMidi/CVtoMidi.ino +++ b/arduino/CVtoMidi/CVtoMidi.ino @@ -75,7 +75,7 @@ void loop() { int velocity = map(readingAverage[1], 0, 1023, 0, 127); int GateVal = map(readingAverage[2], 0, 1023, 0, 127); - /// ???? + // http://www.midikits.net/downloads/source/cv2midi.txt if ((GateVal >= GATE_THRESHOLD) && (!bNoteOn)) { MIDI.sendNoteOn(note, velocity, MIDI_CHANNEL_OMNI); lastNoteOn = note;