enum with arrays

ucgosu_functions_pointers.c

    enum rc_button
    {
      RC_BUTTON_POWER,
      RC_BUTTON_1,
      RC_BUTTON_2,
      RC_BUTTON_VOLUME_UP,
      RC_BUTTON_VOLUME_DOWN,
      RC_BUTTON_CNT,
    };

    static rc_command_cb buttons_to_commands_mapping[RC_BUTTON_CNT] =
    {
      [RC_BUTTON_POWER] = RC_COM_POWER_cb,
      [RC_BUTTON_VOLUME_UP] = RC_SPEED_UP_cb,
      [RC_BUTTON_VOLUME_DOWN] = RC_SPEED_DOWN_cb,
    };