File content as of revision 16:1f50a27806ee:

//=================================
// microbit_switch_if_joy
//=================================
//    BLE switch interface with GROVE joystic for micro:bit
//    It is intended for use with ios devices.
//
//    The MIT License (MIT)   Copyright (c) 2019 Masatomo Kojima
//
//  LED message
//    S  key code setting 
//    C  Conected
//    P  success Pearing
//    F  Fail pearing
//    E  Error at sending data by ble
//    e  Error at writting data to flash memory
//    I  Error by Incorrect cording
//    G  GROVE sensor connect error
//
//  Please refer to the following site. (Japanese only)
//   http://mahoro-ba.net/files/workshop_text_switch_if_104.pdf
//   http://mahoro-ba.net/files/workshop_text_switch_if_401.pdf
//
//  I refer to information written on the following sites.
//    (1)https://os.mbed.com/teams/microbit/code/microbit_presenter/
//           Licensed under the Apache License, Version 2.0
//
//    (2)https://lancaster-university.github.io/microbit-docs/
//          The MIT License (MIT)
//          Copyright (c) 2016 British Broadcasting Corporation.
//

Version
JOY-190225  初版リリース(3SW-190215から派生）
JOY-190316  S=3のキー割り当てを変更
JOY-190320  安定性改善