93 lines
2.1 KiB
Arduino
93 lines
2.1 KiB
Arduino
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#include <SoftwareSerial.h>
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// RX, TX for MIDI out
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SoftwareSerial MIDI(10, 11);
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//button pin
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const int switchPin = 6;
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//rotary encoder pins
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const int encAPin = 4;
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const int encBPin = 5;
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//for sending note-off once after button is released
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boolean btnOff = false;
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//old rotary encoder value
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int encA = LOW;
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//read rotary encoder value
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int enc = HIGH;
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void setup()
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{
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//printing baudrate
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Serial.begin(9600);
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//MIDI baudrate for software serial (pin 10 & 11)
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MIDI.begin(31250);
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//button and encoder pins as input
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pinMode(switchPin, INPUT);
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pinMode(encAPin, INPUT);
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pinMode(encBPin, INPUT);
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//activate pullup-resistors (read value is inverted, so LOW is active)
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digitalWrite(switchPin, HIGH);
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digitalWrite(encAPin, HIGH);
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digitalWrite(encBPin, HIGH);
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}
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void loop() // run over and over
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{
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//print incoming bytes on softwareserial, just for checking MIDI-in, worked
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if (MIDI.available())
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Serial.println(MIDI.read());
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//check if button is pressed
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if (digitalRead(switchPin) == LOW)
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{
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if (!btnOff) {
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//send note on
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midiSignal(144,60,100);
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btnOff = true;
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}
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}
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if (digitalRead(switchPin) == HIGH)
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{
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//send note off
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if (btnOff) {
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midiSignal(128,60,0);
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btnOff = false;
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}
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}
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//read encoder pin A
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enc = digitalRead(encAPin);
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//check if rotary encoder is turned
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if ((encA == HIGH) && (enc == LOW)) {
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//check direction of turning
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if (digitalRead(encBPin) == HIGH) {
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//send note on and note off directly, so signal is send on every turn
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midiSignal(144,62,100);
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midiSignal(128,62,100);
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} else {
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//other direction, other note value
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midiSignal(144,61,100);
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midiSignal(128,61,100);
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}
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}
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//save "old" encoder value
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encA = enc;
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}
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//send MIDI signal through softwareserial
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void midiSignal(byte b1, byte b2, byte b3) {
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//debug printing
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Serial.print("send: ");
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Serial.print(b1);
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Serial.print(" | ");
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Serial.print(b2);
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Serial.print(" | ");
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Serial.print(b3);
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Serial.println("");
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MIDI.write(b1);
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MIDI.write(b2);
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MIDI.write(b2);
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}
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