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This project has been moved. The nRF Blinky application for iOS is now available as a Sample app at CoreBluetooth Mock library.

nRF Blinky

nRF Blinky is an example app targeted towards newcomer BLE developers. This application will demonstrate how to control a LED on an nRF development kit and receive notifications when the button on the kit is pressed and released.

Nordic LED and Button Service

Service UUID: 00001523-1212-EFDE-1523-785FEABCD123

A simplified proprietary service by Nordic Semiconductor, containing two characteristics one to control LED3 and Button1:

  • First characteristic controls the LED state (On/Off).

    • UUID: 00001525-1212-EFDE-1523-785FEABCD123
    • Value: 1 => LED On
    • Value: 0 => LED Off

  • Second characteristic notifies central of the button state on change (Pressed/Released).

    • UUID: 00001524-1212-EFDE-1523-785FEABCD123
    • Value: 1 => Button Pressed
    • Value: 0 => Button Released

    For full specification, check out documentation.

Requirements:

  • An iOS device with BLE capabilities
  • A Development Kit
  • The Blinky example firmware to flash on the Development Kit. For your conveninence, we have bundled two firmwares in this project under the Firmwares directory.
  • To get the latest firmwares and check the source code, you may go directly to our Developers website and download the SDK version you need, then you can find the source code and hex files to the blinky demo in the directory /examples/ble_peripheral/ble_app_blinky/
  • More information about the nRFBlinky example firmware can be found in the documentation.

Installation and usage:

  • Prepare your Development kit.

    • Plug in the Development Kit to your computer via USB.
    • Power On the Development Kit.
    • The Development Kit will now appear as a Mass storage device.
    • Drag (or copy/paste) the appropriate HEX file onto that new device.
    • The Development Kit LEDs will flash and it will disconnect and reconnect.
    • The Development Kit is now ready and flashed with the nRFBlinky example firmware.

  • Start Xcode and run build the project against your target iOS Device (Note: BLE is not available in the iOS simulator, so the iOS device is a requirement to test the application).

    • Launch the nRFBlinky app on your iOS device.
    • The app will start scanning for nearby peripherals.
    • Select the Nordic_Blinky peripheral that appears on screen (Note: if the peripheral does not show up, ensure that it's powered on and functional).
    • Your iOS device will now connect to the peripheral and state is displayed on the screen.
    • Changing the value of the Toggle switch will turn LED 3 on or off.
    • Pressing Button 1 on the Development Kit will show the button state as Pressed on the app.
    • Releasing Button 1 will show the state as Released on the App.