Kalimba scale example

/*
  Sawyer Monk Kalimba Style Example
  I defined two scales to compare, one the regular scale, and one for the kalimba
  with CC1 (modwheel) you can switch through the scales, off = chromatic, full = kalimba

  scale array explanation:

  0 - 11 are as follows:
  0  1  2  3  4  5  6  7  8  9  10  11
  C  C# D  D# E  F  F# G  G# A  A#  B

  to remap whites:
  C     E     G  B     D     F     A
  written in numbers:
  0     2     7  11    2     5     9
  blacks:
     D     F        C     E     G
  =  2     5        1     4     7
  total array entry:
  0, 2, 2,  5, 7,11, 1, 2, 4,5, 7, 9

  now let's duy it!:
*/
const byte scales[2][12] = {
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, // 0 'Chromatic'
{0, 2 ,2, 5, 7, 11,1, 2, 4, 5, 7, 9}, // 1 ‘Kalimba’
};

byte scale=0;

// calculate key octave:
byte octavebyKey(byte key)
{
  if (key == 0)
    return 0;

  return (key / 12);
}

// calculate scaled key:
byte scaledKey(byte key)
{
  return scales[scale][(key % 12)] + (octavebyKey(key) * 12);
}

// check if modwheel is changed:
bool RK002_onControlChange(byte chn, byte nr, byte val)
{
  if (nr == 1) {
    scale=val/126; // low values will give scale value 0, high values will give value 1
    // Send "all notes off" to disable notes being sustained during controller change
    RK002_sendControlChange(chn, 123, 0);
  }
  return true;
}

// process note on messages:
bool RK002_onNoteOn(byte chn, byte key, byte vel)
{
  RK002_sendNoteOn(chn, scaledKey(key), vel);
  return false;
}

// process note of messages:
bool RK002_onNoteOff(byte chn, byte key, byte vel)
{
  RK002_sendNoteOff(chn, scaledKey(key), vel);
  return false;
}
// .. no other processed needed, next is the compulsory routines
// but these can be empty

void setup()
{
}

void loop()
{
}