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BLE discover device while backgrounded
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BLE discover device while backgrounded


  • Subject: BLE discover device while backgrounded
  • From: Marlon Smith <email@hidden>
  • Date: Thu, 29 Nov 2012 14:55:22 -0800

Hi everyone,

I'm using a TI BLE key fob, along with an application running on my ipod that will scan for and connect to the key fob.  Everything works fine until I start the scan and then background the application before powering up the keyfob.  Even though I have set UIBackgroundModes = "bluetooth-central" in the application's info.plist, the didDiscoverPeripheral function never seems to be called when in the background.

Reading through the documentation and the forums, I understand that it can take 55 times longer to discover a peripheral in the background.  However even after waiting much longer than that, the device never seems to be detected.  If I bring the app back to the foreground, the key fob is detected instantly.

I've seen several posts outlining similar problems, but I haven't seen any solutions on this forum.

Can anyone shed some light on this?

Thanks

Marlon
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