/** 
 * This example demonstrates the use of MIDI Control Change potentiometers that
 * can be used for changing effect parameters, volumes, pan and balance
 * controls, etc. It can control almost any knob in your DAW software.
 *
 * @boards  AVR, AVR USB, Nano Every, Due, Nano 33 IoT, Nano 33 BLE, UNO R4, Pi Pico, Teensy 3.x, ESP32, ESP8266
 * 
 * Connections
 * -----------
 * 
 * - A0: wiper of a potentiometer
 * 
 * Connect the left terminal of the potentiometer to ground, and the right one
 * to V<sub>CC</sub>.
 * 
 * Behavior
 * --------
 * 
 * - When you turn the potentiometer, you should receive MIDI Control Change
 *   events, with a value between 0 and 127.
 * - The analog input is filtered, so there shouldn't be any noise on the 
 *   position. If there is, check your wiring, and make sure that the resistance
 *   of the potentiometer isn't too high (10 kΩ is ideal).
 * 
 * Mapping
 * -------
 * 
 * Select the Arduino as a custom MIDI controller in your DAW, and use the 
 * MIDI learn option to assign the potentiometer to a function.  
 * It will send the MIDI Control Change Channel Volume parameter for channel 1.
 * 
 * Written by PieterP, 2019-08-13  
 * https://github.com/tttapa/Control-Surface
 */

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

// Instantiate a MIDI over USB interface.
USBMIDI_Interface midi;

// Instantiate a CCPotentiometer object
CCPotentiometer potentiometer {
  A0,                                   // Analog pin connected to potentiometer
  {MIDI_CC::Channel_Volume, Channel_1}, // Channel volume of channel 1
};

void setup() {
  Control_Surface.begin(); // Initialize Control Surface
}

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