/*
kris:from Arduino/File/Examples/MIDI COntroller/EX.11.Button_Matrix w slight mod.
Leonardo  end kris


This is an example of the "ButtonMatrix" class of the MIDI_controller library.
Connect a 4 × 3 matrix of buttons with the rows to pins 2, 3, 4 and 5, 
and the columns to pins 6, 7 and 8.
Pull-up resistors are not necessary, because the internal ones will be used. 

If you want to be able to press multiple buttons at once, add a diode 
in series with each button, as shown in the schematic on the Wiki:
https://github.com/tttapa/MIDI_controller/wiki/Hardware

The note numbers are specified in the 'addresses' array.
Map accordingly in your DAW or DJ software.

Written by tttapa, 24/09/2017
https://github.com/tttapa/MIDI_controller

modified to 6x6 by kris

*/

#include "MIDI_Controller.h" // Include the library

const uint8_t velocity = 0b1111111; // Maximum velocity (0b1111111 = 0x7F = 127)
const uint8_t addresses[6][6] = {   // the note numbers corresponding to the buttons in the matrix
  { 36, 37, 38, 39, 40, 41},
  { 42, 43, 44, 45, 46, 47},
  { 48, 49, 50, 51, 52, 53},
  { 54, 55, 56, 57, 58, 59},
  { 60, 61, 62, 63, 64, 65},
  { 66, 67, 68, 69, 70, 71},
};

// Create a new instance of the class 'ButtonMatrix', called 'buttonmatrix', with dimensions 4 rows and 3 columns, with the rows connected to pins 2, 3, 4 and 5
// and the columns connected to pins 6, 7 and 8, that sends MIDI messages with the notes specified in 'addresses' on MIDI channel 1, with velocity 127
ButtonMatrix<6, 6> buttonmatrix({2, 3, 4, 5, 6, 7}, { A0, A1, A2, A3, A4, A5}, addresses, 1, velocity);

void setup() {}

void loop() {
  // Refresh the buttons (check whether the states have changed since last time, if so, send it over MIDI)
  MIDI_Controller.refresh();
}