Following my last article on EnOcean library for Arduino I received some email because the usage example was not good. Indeed I probably didn’t copy past the last version of code so I decided to do a new example (and also improve the library).

This time I will command 1 LED strip using an EnOcean button PTM210. A short click on the button will change the LED strip color to a random one. A long click (more than 2s) turns it off.

Here is the result:

The system requires a strip RGB led, an Arduino Leonardo, an EnOcean TCM 310 receiver and an EnOcean PTM210 emitter (button).

A made few modifications to my first EnOcean library by adding a new variable to check if a message were received on the TCM310. I also add a method to clean the “message” object. The EnOcean library is still available on my bitbucket repo (HERE)

The code is pretty simple. On each loop we check if a new message is available on the TCM310.

void loop() 
{
  delay(50); 
  _Msg.decode();
  if (_Msg.dataAvailable() == true)
  {
    actionTaker();
    _Msg.reset();
  }
}

If yes we will either start a timer if it is a button press or take an action if it is a button release. The action depend if the timer is finish or not (to determine if it is a long or short click).

void actionTaker()
{
  if (_Msg.getPayload() == 0x70)
  {
    Serial.println("The user push the button. Nothing to do appart starting the timer");
    _TimerExpire = false;
    MsTimer2::start(); // active Timer 2 
  }
  else if (_Msg.getPayload() == 0x00)
  {
    Serial.println("The user stop pushing the enocean button");
    if (_TimerExpire == true)
    {
      Serial.println("The user push was more than the timer (long push)");
      TurnOffLed();
      _NbClick=0;
    }
    else
    {
      Serial.println("The user push was quick (short push)");
      RandomLedColor();
      _NbClick=0;
    }
  }
  else
  {
    Serial.print("Received an unsupported command : ");
    Serial.println(_Msg.getPayload());
  }
}

There is also some extra function to determine a rand color and send it to the LED. The whole code is available on bitbucket (HERE)