CCIncrementDecrementButtons.ino

CCIncrementDecrementButtons

This is an example that demonstrates the use of Increment and Decrement buttons that can be used for scrolling through a song list, tuning effects, etc.
You can compare it to a rotary encoder, but with two buttons instead of an encoder.

Boards:

AVR, AVR USB, Nano Every, Due, Nano 33, Teensy 3.x, ESP32

Connections

• 5: momentary push button (to ground)
• 6: momentary push button (to ground)

The internal pull-up resistors for the buttons will be enabled automatically.

Behavior

• If the button on pin 5 is pressed, a MIDI CC increment message is sent.
• If the button on pin 6 is pressed, a MIDI CC decrement message is sent.
• The controller number MCU::V_POT_1 will be used.
• If either of the buttons is pressed down for a longer time, it will keep on sending increment/decrement messages quickly until you release it (like a key on a computer keyboard). This is to make it easier to scroll a large amount, for example. The timing can be changed by tweaking AH::LONG_PRESS_DELAY and AH::LONG_PRESS_REPEAT_DELAY in AH/Settings/Settings.hpp.
• If both buttons are pressed simultaneously, a MIDI Note On event is sent on note MCU::V_POT_SELECT_1.
  (This is optional, you can just leave out the final argument to the constructor, and it won't send anything when you press both buttons at once).
• The multiplier can be used to increment multiple ticks per each time you press a button. This is useful if you have to press the button for a very long time to get a substantial change.

Map the Arduino as a Mackie Control Universal (MCU) or equivalent in your audio software.

Written by PieterP, 2019-01-26
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 CCIncrementDecrementButtons object
CCIncrementDecrementButtons buttons = {
  {5, 6},              // Button pins: 5 increments, 6 decrements
  MCU::V_POT_1,        // Increment/Decrement CC address
  1,                   // Multiplier
  MCU::V_POT_SELECT_1, // Reset note address
};
 
void setup() {
  // Use the Mackie Control protocol for sending relative MIDI CC messages.
  RelativeCCSender::setMode(MACKIE_CONTROL_RELATIVE);
 
  Control_Surface.begin(); // Initialize Control Surface
}
 
void loop() {
  Control_Surface.loop(); // Update the control surface
}