IoT Empire
Experimental BLE Blinky Application using a LED and button service server. This is a small custom service that is used to toggle LEDs and receive button status from wirelessly connected Bluetooth Smart development boards.
Homepage
For information on the GATT service UUID, characteristic UUIDs, or what to expect when manipulating them, please refer to:
http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v13.0.0%2Fble_sdk_app_blinky.html http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v11.0.0%2Fgroup__ble__sdk__srv__lbs.html http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v11.0.0%2Fgroup__ble__sdk__srv__lbs__c.html
Good luck with that.
For an easy 5 minute tour of how Bluetooth Smart works, program a developer kit (nRF52-DK for example) with this application. Once it starts to run it will indicate advertising by blinking LED1. At this time, install a corresponding client application like the nRF Blinky Android app [1] and watch it detect the developer kit. Click on the 'Lightsw' identifier to connect with the GATT service and wait until the developer kit LED1 stops blinking to indicate a connected state. Now, illuminate LED2 by clicking on the lightbulb. Pressing one of the developer kit's buttons will cause the Android app's background to illuminate illustrating bidirectional communication over Bluetooth Smart.
[1] https://play.google.com/store/apps/details?id=no.nordicsemi.android.nrfblinky