MidiMixerV1.ino

// Include the library
#include <Control_Surface.h>

// Instantiate a MIDI Interface to use
USBMIDI_Interface midi;

// Instantiate an analog multiplexer
CD74HC4051 mux = {
  A0,       // Analog input pin
  { 2,3, 4} // Address pins S0, S1, S2
};

int invertMap(int value){
  
}
// Create an array of potentiometers that send out
// MIDI Control Change messages when you turn the
// potentiometers connected to the eight input pins of
// the multiplexer
CCPotentiometer pots[] = {
  {mux.pin(0), {MIDI_CC::Effect_Control_1, CHANNEL_1}},
  {mux.pin(1), {MIDI_CC::Effect_Control_1, CHANNEL_2}},
  {mux.pin(2), {MIDI_CC::Effect_Control_1, CHANNEL_3}},
  {mux.pin(3), {MIDI_CC::Effect_Control_1, CHANNEL_4}},
  {mux.pin(4), {MIDI_CC::Effect_Control_1, CHANNEL_5}},
  {mux.pin(5), {MIDI_CC::Effect_Control_1, CHANNEL_6}},
  {mux.pin(6), {MIDI_CC::Effect_Control_1, CHANNEL_7}},
  {mux.pin(7), {MIDI_CC::Effect_Control_1, CHANNEL_8}},
};

analog_t invertPot(analog_t val) {
  return 1023 - val;
}

void setup () {
  for (auto &pot : pots)
    pot.map(invertPot);
  Control_Surface.begin();
}

// Update the Control Surface
void loop() {
  Control_Surface.loop();
}