#include <MIDIUSB.h>
#include <DebFuncs.h>

const int LEDPIN = 13;
const int INPIN[] = {3,4,5,6};
const int CC_NUM[] = {25,26,27,28};

DF::Debounce debounce[4];
DF::IsDROPPED isDropped[4];
DF::IsRAISED isRaised[4];

void setup() {
  for (int i = 0; i < 4; i++ ) {
    pinMode( INPIN[i], INPUT_PULLUP );
  }
  pinMode( LEDPIN, OUTPUT );
  Serial.begin( 115200 );

}

void loop() {
  for (int i = 0; i < 4; i++ ) {
    const int DEBOUNCED_DATA = debounce[i]( digitalRead( INPIN[i] ) );
    if ( isDropped[i]( DEBOUNCED_DATA ) ) {
      controlChange( 0, CC_NUM[i], 127 );
      MidiUSB.flush();
      digitalWrite( LEDPIN, HIGH );
    }
    if ( isRaised[i]( DEBOUNCED_DATA ) ) {
      controlChange( 0, CC_NUM[i], 0 );
      MidiUSB.flush();
      digitalWrite( LEDPIN, LOW );
    }
  }
  delay(1);
}

void controlChange( byte channel, byte control, byte value) {
  midiEventPacket_t event = { 0x0B, 0xB0 | channel, control, value };
  MidiUSB.sendMIDI( event );
}