Bluetooth Button Service

For another device like a smartphone to use any of the Bluetooth “services” which the board has, it must first be paired with the board. Once paired, the other device may connect to the board and exchange data relating to many of the board’s features.

The Bluetooth button service makes it possible for another device such as a smartphone to be notified wirelessly whenever a button on the front of a board is pressed. Each of the two board buttons can be in one of three possible states:

  • Not pressed
  • Pressed
  • Long press - pressed and held down for at least 2 seconds

The button service allows you to make other things which are connected to your board using Bluetooth respond in some way when you press either of the buttons. You could, for example, hide your smartphone somewhere in the room and have it make an amusing noise when you press either of the buttons on your board. We’ll leave it to you to decide what would be amusing.

No additional code is needed on the board to use the Bluetooth button service from another device.

bluetooth.startButtonService();

Example: Starting the Bluetooth button service

The following code shows the Bluetooth button service being started:

bluetooth.startButtonService();

Video - Button service demo - Starts at 0:59

Advanced

For more advanced information on the board Bluetooth button service including information on using a smartphone, see the Lancaster University board runtime technical documentation

See also

About Bluetooth, board Bluetooth profile overview , board Bluetooth profile reference, Bluetooth on board resources, Bluetooth SIG

bluetooth