Código Fuente:
#include "MIDIUSB.h" const int N_BUTTONS = 18; // total numbers of buttons const int BUTTON_ARDUINO_PIN[18] = {2, 3, 4, 5, 6, 7, 14, 15, 18, 19, 20, 21}; // pins of each button connected straight to the Arduino const int BUTTON_NOTES[18] = {64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75}; int buttonCState[N_BUTTONS] = {}; // stores the button current value int buttonPState[N_BUTTONS] = {}; // stores the button previous value // debounce unsigned long lastDebounceTime[N_BUTTONS] = { 0 }; // the last time the output pin was toggled unsigned long debounceDelay = 50; // the debounce time; increase if the output flickers //---------------------MIDI---------------------- byte midiCh = 0; // MIDI channel to be used - start with 1 for MIDI.h lib or 0 for MIDIUSB lib //---------------------SETUP---------------------- void setup() { for (int i = 0; i < N_BUTTONS; i++) { pinMode(BUTTON_ARDUINO_PIN[i], INPUT_PULLUP); } } //---------------------LOOP---------------------- void loop() { buttons(); } //---------------------BUTTONS---------------------- void buttons() { for (int i = 0; i < N_BUTTONS; i++) { buttonCState[i] = digitalRead(BUTTON_ARDUINO_PIN[i]); // read pins from arduino if ((millis() - lastDebounceTime[i]) > debounceDelay) { if (buttonPState[i] != buttonCState[i]) { lastDebounceTime[i] = millis(); if (buttonCState[i] == LOW) { controlChange(midiCh, BUTTON_NOTES[i], 127); // channel, note, velocity MidiUSB.flush(); } else { controlChange(midiCh, BUTTON_NOTES[i], 0); // channel, note, velocity MidiUSB.flush(); } buttonPState[i] = buttonCState[i]; } } } } void controlChange(byte channel, byte control, byte value) { midiEventPacket_t event = { 0x0B, 0xB0 | channel, control, value }; MidiUSB.sendMIDI(event); }
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