bdotdub/rdar23374935.md

Created November 4, 2015 16:21

Star (0) You must be signed in to star a gist
Fork (0) You must be signed in to fork a gist

Learn more about clone URLs
Clone this repository at <script src="https://gist.github.com/bdotdub/4d22f4c9e2e5c46ea175.js"></script>
Save bdotdub/4d22f4c9e2e5c46ea175 to your computer and use it in GitHub Desktop.

Download ZIP

Raw

rdar23374935.md

CoreBluetooth not discovering peripherals

rdar://23374935

Summary:

Bluetooth LE devices are never detected by a CBCentralManager when scanning for all devices.

Steps to Reproduce:

Clone and run a Bluetooth LE peripheral, e.g. git clone [email protected]:sandeepmistry/osx-ble-peripheral.git
Clone this example on an Apple TV: git clone [email protected]:bdotdub/CBExample.git
Run the example on a tvOS device

Expected Results:

The CBCentralManagerDelegate discovery functions called with Bluetooth LE peripherals nearby

Actual Results:

None of the CBCentralManagerDelegate functions are called

Version:

tvOS 9.0

Notes:

Configuration:

Apple TV

Attachments:

rcarlsen commented Nov 11, 2015

I believe that you are calling the centralManager too soon in the referenced example project. You must wait until the centralManager calls the delegate method centralManagerDidUpdateState() with a state parameter of .PoweredOn or higher before calling methods on the centralManager.

When I moved the call to scanForPerihperalsWithServices() into the .PoweredOn case in ..didUpdateState() then nearby peripherals were discovered as expected.