I've been working through some of the examples in the new O'Reilly book on BLE, all of which read from the accelerometer, and it has stopped working. the app only shows "*". I've tried turning it off and on from the settings menu, running the app on a different android phone, and even pulling out the battery for a hard reset.
Nothing.
All of the other sensors work just fine. What could I have done, and how can I recover it?
Thanks!