UV_K5_playground/src/spectrum_fagci/keys.hpp

enum Keys {
  NUM0,
  NUM1,
  NUM2,
  NUM3,
  NUM4,
  NUM5,
  NUM6,
  NUM7,
  NUM8,
  NUM9,
  MENU,     // 10
  UP,       // 11
  DOWN,     // 12
  EXIT,     // 13
  ASTERISK, // 14
  FUNCTION, // 15
  _NA16,
  _NA17,
  _NA18,
  _NA19,
  _NA20,
  _NA21,
  FN2, // 22
  FN1, // 23
};