August 2012 - Bluetooth-dev

Re: UIRequiredDeviceCapabilities key
by Jeffrey Peng 16 Aug '12

16 Aug '12

Yes! Same question here! The New iPad can not found nor install the bluetooth-le app at AppStore. Is this a bug? Jeff 2012/8/14 Anton Lam <anton(a)ideaslab.hk>: > Greetings! > > We're developing an app that requires BLE capability. > > According to the documentation at > http://developer.apple.com/library/ios/#documentation/general/Reference/Inf…, > we should add the key 'bluetooth-le' to UIRequiredDeviceCapabilities in > info.plist. > > But the problem is that after we added the key, XCode refused to load the > app onto the New iPad. > > Is this a bug? > > Should I add the key when submitting to App Store? > > > Thanks. > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/bluetooth-dev/jeffpeng78%40gmail.com > > This email sent to jeffpeng78(a)gmail.com > _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Re: Not receiving BLE events in background
by András Kövi 16 Aug '12

16 Aug '12

Hi Arthur, thank you for the response. I'll try what you suggest. However, it seems to be odd that my app does not (or with significant delay) receive attribute write requests while connected in the background. This would not be good at all. A few hundred milliseconds delay is ok but 10s is intolerable. The reason why I think something is still missing from the whole picture is that heart rate monitors and similar are also target applications. Those devices send the data at a constant pace and I can't think that the framework would buffer it for my app. Anyway, it would be good to hear the official Apple opinion as well. Best regards, Andras 2012/8/16 Arturs Vonda <arturs(a)artursvonda.lv>: > Hi, > > I have done some tests in recent days and here is what I've found: > > 1) It takes a while to discover devices in background mode. Usually it takes > 10-30 seconds till first discovery, but can be a more. If you allow > duplicate peripherals (notification for each ad package), it interval > between those notifications can be minutes. > 2) I haven't tested this, but as far as I understand, you can only scan for > specific services in background mode. If you scan for all devices, this > might not work. > > I did the tests with two iPhones 4s -- one as peripheral and on as central. > > Also I noticed that events in background more might take a while to execute. > I had timer to fire 10 seconds after the peripheral was found and the events > in method took couple of minutes to execute (including making request to > server). > > Hope this helps somehow. > > Sincerely, > Arthur > > On Aug 16, 2012, at 10:41, "m.kroll" <m.kroll(a)mac.com> wrote: > > Hi Andras, > I have the same issues here. > > In my app delegates method: > > - (void)applicationDidEnterBackground:(UIApplication *)application > > I'm calling: > > - (void)scanForPeripheralsWithServices:(NSArray *)serviceUUIDs > options:(NSDictionary *)options; > > But the delegate method: > > > - (void)centralManager:(CBCentralManager *)central > didDiscoverPeripheral:(CBPeripheral *)peripheral > advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI; > > > > Seems to be never called. > "bluetooth-central" is in my UIBackgroundModes array as well. > > I changed the ADV Interval of my peripherals to 20ms in order to meet the > Apple BLE Peripheral recommendations but this changed nothing. > > Kind Regards, > Dr. Michael Kroll. > > > On Aug 16, 2012, at 09:24 AM, Andras Kovi <allprog(a)gmail.com> wrote: > > Hi! > > Do I have to add anything to the app to indicate iOS that BLE events must be > delivered to it while backgrounded? I declared the UIBackgroundModes / > bluetooth-central in the info.plist file, so in theory I should be able to > receive the events. > > 1. The app scans for the BLE accessory and connects to it. Connection is > reestablished automatically if the didDisconnect is received. > 2. Go back to the home screen. > 3. No callbacks while the app is in the background. > 4. Bring the app back to foreground, and the didConnect, didDiscover and > other callbacks are immediately called. > > Thanks in advance, > Andras > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/bluetooth-dev/m.kroll%40mac.com > > This email sent to m.kroll(a)mac.com > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/bluetooth-dev/apple.bluetooth-dev%4… > > This email sent to apple.bluetooth-dev(a)artursvonda.lv > > _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Re: Not receiving BLE events in background
by Arturs Vonda 16 Aug '12

16 Aug '12

Kind Regards, Dr. Michael Kroll. _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Re: Not receiving BLE events in background
by m.kroll 16 Aug '12

16 Aug '12

Kind Regards, Dr. Michael Kroll. _______________________________________________ Do not post admin requests to the list. They will be ignored. Bluetooth-dev mailing list (Bluetooth-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Not receiving BLE events in background
by Andras Kovi 16 Aug '12

16 Aug '12

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Re: Running timers in background of BLE app
by Joakim Linde 15 Aug '12

15 Aug '12

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UIRequiredDeviceCapabilities key
by Anton Lam 14 Aug '12

14 Aug '12

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Re: IOS Device Acting As both Central and Peripheral
by Andras Kovi 13 Aug '12

13 Aug '12

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RE: Running timers in background of BLE app
by Nick Moen 13 Aug '12

13 Aug '12

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IOS Device Acting As both Central and Peripheral
by James Collins 13 Aug '12

13 Aug '12

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