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Re: need to reboot device to get btle working again question
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Re: need to reboot device to get btle working again question


  • Subject: Re: need to reboot device to get btle working again question
  • From: William Henderson <email@hidden>
  • Date: Mon, 08 Jul 2013 16:58:17 -0700

FWIW I have yet to see this in any of the iOS 7 betas (I was experiencing it regularly before).

An aside: Matthew, you should definitely invest in one of the new cheap camera-less iPod Touches to test iOS 7 with. A lot is changing and you're going to have a rough time otherwise. Good advice from one dev to another =).

William


On Tue, Jun 11, 2013 at 11:06 AM, Matthew Chung <email@hidden> wrote:
For anyone who saw the bt daemon crash and has ios7 installed, I just got a response from apple regarding the bug . (I can't install ios7 since I need to work on ios6 for now)

---

This is a follow-up regarding regarding Bug ID# 13442577.

We believe this issue has been addressed in iOS 7 beta 1 (11A4372q). Please verify with this release, and update your bug report with the results.

Best Regards,

Apple Developer Support
Worldwide Developer Relations


On Mon, Mar 18, 2013 at 9:32 AM, Dave Camp <email@hidden> wrote:
That console message indicates that the bluetooth daemon crashed and restarted. Things don't always work so good after that. Be sure to file a bug with Apple provide them with sample code if possible.

Dave

On Mar 18, 2013, at 8:30 AM, Ming Leung <email@hidden> wrote:

I have the exact problem and I am using an external central device. So I guess the problem is with CBPeripheralManager.

When this problem occurs, I saw CoreBluetooth[ERROR] XPC and BT was reset. After it recovers, sometimes it never can send notification (via updateValue:forCharacteristic:onSubscribedCentrals:) even you restart the app or turn off/on the Bluetooth in Settings). The only way to get out that situation is to hard reset (or off/on) the device.

../ming  

On Monday, March 18, 2013, Matthew Chung wrote:
Hello,

I have an ipad mini and iphone 5 both running ios 6.1.2. One is acting as the central and the other as the peripheral, where the central is receiving data via notifications.
 
Intermittently, my call to updateValue in the peripheral

didSend = [self.peripheralManager updateValue:chunk forCharacteristic:self.transferCharacteristic onSubscribedCentrals:nil]

always returns false and

peripheralManagerIsReadyToUpdateSubscribers

never gets called. also my central delegate callback

- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
 
does not get called.  normally, restarting the app or rebuilding in xcode works fine, but at times, I need to reboot the device to get notifications working again.  This is even if the central has successfully subscribed. 
 
I'm not sure if the issue is in the Central or Peripheral. Anyone have any thoughts as to why this may be?

Thank you.  
(this is a cut n paste job from https://devforums.apple.com/thread/182331?tstart=0)
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Regards,
Matthew

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