mirror of
https://git.alemi.dev/cv-keyboard.git
synced 2024-11-23 17:04:49 +01:00
Implemented an arpeggiator and then broke it (should wait for MIDI clock). Added a basic implementation of 3 capacitive buttons (for drum pads)
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eadbbbf9eb
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1 changed files with 145 additions and 60 deletions
205
cvkeyboard.ino
205
cvkeyboard.ino
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@ -18,10 +18,13 @@
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#define Oct4 10
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#define noteOffset 36
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#define MINUTE 60000
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//#include <MIDI.h>
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//#include <HID.h>
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//MIDI_CREATE_DEFAULT_INSTANCE();
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#include <CapacitiveSensor.h>
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#include <MIDI.h>
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#include <HID.h>
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MIDI_CREATE_DEFAULT_INSTANCE();
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typedef struct OctaveStatus {
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bool stat[12];
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@ -29,14 +32,27 @@ typedef struct OctaveStatus {
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} octst;
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int note[12] = {
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C, Db, D, Eb, E, F, Gb, G, Ab, A, Bb, B }; // Note Pins above
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C, Db, D, Eb, E, F, Gb, G, Ab, A, Bb, B }; // Note Pins above
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int octave[4] = {
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Oct1, Oct2, Oct3, Oct4 }; // Octave Pins above
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int ledPins[12]{
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19, 18, 17, 16, 15, 14, 2, 3, 4, 5, 6, 0 };
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Oct1, Oct2, Oct3, Oct4 }; // Octave Pins above
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int clock = 0; // Keeps track of current octave
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int clock = 0; // Used if arp to cycle through notes
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octst buff;
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bool kboard[49];
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bool raw; // Global Settings. RAW = signal is sent when key is detected
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byte velocity = 100;
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byte channel = 1;
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byte midi_clock = 0xf8;
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byte dataIn;
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int bpm = 360;
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unsigned long nextBeat = 0;
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unsigned long gate = 50; //ms of keypress if arpeggiator
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int npressed;
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bool bu1, bu2, bu3;
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CapacitiveSensor b1 = CapacitiveSensor(5, 6);
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CapacitiveSensor b2 = CapacitiveSensor(4, 3);
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CapacitiveSensor b3 = CapacitiveSensor(16, 17);
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void setup() {
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for (int cOctave = 0; cOctave < 4; cOctave++) {
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@ -45,36 +61,49 @@ void setup() {
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for (int cNote = 0; cNote < 12; cNote++) {
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pinMode(note[cNote], INPUT);
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}
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for (int cLed = 0; cLed < 12; cLed++) {
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pinMode(ledPins[cLed], OUTPUT);
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}
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// MIDI.begin(MIDI_CHANNEL_OFF);
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MIDI.begin(MIDI_CHANNEL_OFF);
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Serial.begin(115200);
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// nextBeat = millis() + (MINUTE / bpm);
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for (int cLed = 0; cLed < 12; cLed++) {
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digitalWrite(ledPins[cLed], HIGH);
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delay(100);
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}
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for (int cLed = 0; cLed < 12; cLed++) {
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digitalWrite(ledPins[cLed], LOW);
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delay(100);
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}
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pinMode(50, OUTPUT);
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nextBeat = millis() + (MINUTE / bpm);
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pinMode(2, INPUT_PULLUP);
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for (int cStat = 0; cStat < 49; cStat++) kboard[cStat] = LOW;
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nextBeat = 0;
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b1.set_CS_AutocaL_Millis(0xFFFFFFFF);
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b2.set_CS_AutocaL_Millis(0xFFFFFFFF);
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b3.set_CS_AutocaL_Millis(0xFFFFFFFF);
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bu1 = LOW;
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bu2 = LOW;
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bu3 = LOW;
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}
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void loop() {
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for (clock = 0; clock < 4; clock++) {
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digitalWrite(octave[clock], HIGH);
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buff = scan(clock);
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digitalWrite(octave[clock], LOW);
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debug(buff);
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serialDebug(buff);
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scanButtons();
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npressed = 0;
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raw = digitalRead(2);
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for (int cOctave = 0; cOctave < 4; cOctave++) {
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digitalWrite(octave[cOctave], HIGH);
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npressed += eval(scan(cOctave));
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digitalWrite(octave[cOctave], LOW);
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}
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if (raw) return;
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if (npressed < 1) return;
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dataIn = Serial.read();
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if (dataIn == midi_clock) {
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clock++;
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while (kboard[clock] == LOW) {
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clock++;
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if (clock == 49) clock = 0;
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}
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playNote(clock, HIGH);
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delay(gate);
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playNote(clock, LOW);
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}
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}
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octst scan(int nOct) { // This function reads the 12 note pins and returns a struct
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int c; // with 1 bool for each note
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octst scan(int nOct) { // This function reads the 12 note pins and returns a struct
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int c; // with 1 bool for each note
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octst output;
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output.nOct = nOct;
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@ -85,46 +114,102 @@ octst scan(int nOct) { // This function reads the 12 note pins and returns a
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return output;
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}
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void debug(octst input) { // Lights up 12 LEDs used to control the readings
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int c;
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for (c = 0; c < 12; c++) {
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digitalWrite(ledPins[c], input.stat[c]);
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}
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delay(5);
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for (c = 0; c < 12; c++) {
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digitalWrite(ledPins[c], LOW);
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int eval(octst input) {
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int pressed = 0;
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int snote = input.nOct * 12;
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for (int c = 0; c < 12; c++) {
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if (input.stat[c] ^ kboard[c + snote]) {
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if (raw) playNote(c + snote, input.stat[c]);
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kboard[c + snote] = input.stat[c];
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}
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if (kboard[c + snote] == HIGH) pressed++;
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}
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return pressed;
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}
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void serialDebug(octst input) { // Prints on the Serial Monitor the 12 bits just read
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void serialDebug(octst input) { // Prints on the Serial Monitor the 12 bits just read
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for (int c = 0; c < 12; c++) {
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Serial.print(input.stat[c]);
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}
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Serial.println("");
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}
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bool debouncedRead(int pin) { // Should clear readings from false positives but doesn't work
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if (digitalRead(pin) == HIGH) {
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if (digitalRead(pin) == HIGH) {
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if (digitalRead(pin) == HIGH) {
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if (digitalRead(pin) == HIGH) {
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if (digitalRead(pin) == HIGH) {
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return HIGH;
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}
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}
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}
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}
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void playNote(int c, bool status) {
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byte n = c + noteOffset;
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if (status == HIGH) {
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MIDI.sendNoteOn(n, velocity, channel);
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}
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else if (status == LOW) {
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MIDI.sendNoteOff(n, velocity, channel);
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}
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return LOW;
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}
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/*octst clearOct(octst o1, octst o2, octst o3, octst o4, octst o5) {
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octst output;
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void scanButtons() {
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long sensor1 = b1.capacitiveSensor(1);
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long sensor2 = b2.capacitiveSensor(1);
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long sensor3 = b3.capacitiveSensor(1);
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output.nOct = o1.nOct;
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for (int c = 0; c < 12; +c++) {
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if (o1.stat[c] && o2.stat[c] && o3.stat[c] && o4.stat[c] && o5.stat[c]) output.stat[c] = HIGH;
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else output.stat[c] = LOW;
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}
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return output;
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}*/
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if (sensor1 > 10) {
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if (!bu1) {
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MIDI.sendNoteOn(95, velocity, 7);
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bu1 = HIGH;
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}
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}
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else {
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if (bu1) {
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MIDI.sendNoteOff(95, velocity, 7);
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bu1 = LOW;
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}
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}
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if (sensor2 > 10) {
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if (!bu2) {
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MIDI.sendNoteOn(97, velocity, 7);
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bu2 = HIGH;
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}
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}
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else {
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if (bu2) {
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MIDI.sendNoteOff(97, velocity, 7);
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bu2 = LOW;
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}
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}
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if (sensor3 > 10) {
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if (!bu3) {
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MIDI.sendNoteOn(99, velocity, 7);
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bu3 = HIGH;
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}
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}
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else {
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if (bu3) {
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MIDI.sendNoteOff(99, velocity, 7);
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bu3 = LOW;
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}
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}
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/*bu1 = evalButton(b1, bu1, 95);
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bu2 = evalButton(b2, bu2, 97);
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bu3 = evalButton(b3, bu3, 99);*/
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}
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bool evalButton(CapacitiveSensor b, bool value, int note) {
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long sensor = b.capacitiveSensor(1);
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if (sensor > 15) {
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if (value) return HIGH;
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else {
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MIDI.sendNoteOn(note, velocity, 7);
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return HIGH;
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}
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}
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else {
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if (!value) return LOW;
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else {
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MIDI.sendNoteOff(note, velocity, 7);
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return LOW;
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}
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}
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}
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