October 2012 - Bluetooth-dev

Re: Problem about 128 bits CBUUID Advertising
by Khaos Tian 10 Oct '12

10 Oct '12

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Weird behavior with other BT apps in iOS 6
by Aaron Wright 10 Oct '12

10 Oct '12

We've discovered a weird behavior while using our app as well as other Bluetooth apps, in particular LightBlue. In iOS 6 we found that when the LightBlue app was searching we could not see our peripheral in our app. The strange thing is that even though our app does not display the peripheral, it asks to pair to that device. A few moments later (probably when the LightBlue app stops scanning?) the peripheral will show up in our app. This does not seem to be the case in iOS 5 though. Has anyone experienced this by chance? If so, what are your workarounds? Is this a known issue with the Apple wireless team? Or is this standard behavior for iOS 6? _______________________________________________ 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: Service advertisement in the background is misbehaving
by Andras Kovi 09 Oct '12

09 Oct '12

Hi everyone, sorry for reposting this question but I have not received any reply so far. This issue is relevant for many developers so any official feedback would be highly appreciated. Thank you, Andras On 2012.09.28., at 22:14, Andras Kovi <allprog(a)gmail.com> wrote: > Hi Joakim, > > I just helped debugging an issue for Frederic and found a really interesting behavior. Please confirm or correct me. > > Observation: if the app is sent to background, the advertising continues but the advertisement data is not sent in the packages > > Effect 1: Backgrounded apps cannot be discovered by clients that filter for services. When a client uses scanForPeripheralsWithServices, the peripheral will be found but callback not happens in the app as the service filtering criteria will not be satisfied > > Effect 2: Backgrounded apps will never be discovered by clients that started scanning while the app was in background. If a client starts scanning while the app is in the background, CoreBluetooth finds the peripheral but callback does not happen. Then when the app comes to foreground and advertisement data is sent again, CoreBluetooth will not invoke the callback as it thinks it already provided the callback for that. (Discovery may happen only when the BLE address is changed (every 15 minutes or so)) > > I think this phenomenon can explain many recently reported issues too. > > Your help is much appreciated. > > Regards, > 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/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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Temperature Sensor with TI dev kit?
by Rick Mann 09 Oct '12

09 Oct '12

I finally got my TI BT LE dev kit, which means I can now program the BlueGiga modules I had. But I wonder if there's not firmware to make the TI dev kit dongle or keyfob act as a temperature sensor device compatible with the Xcode sample project? -- Rick _______________________________________________ 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: Future iOS devices' backward compatible with Bluetooth 2.1 + EDR accessories
by Vincent Tong 09 Oct '12

09 Oct '12

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Bluetooth radio recommendation
by Evens Augustin 09 Oct '12

09 Oct '12

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# of LE devices connected
by Rebecca Bird 09 Oct '12

09 Oct '12

How many low energy Bluetooth devices can be simultaneously connected to one central Bluetooth 4.0 radio? Does the answer vary for Bluetooth 4.0-equipped Mac Mini vs Macbook Air vs iPad centrals? _______________________________________________ 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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Future iOS devices' backward compatible with Bluetooth 2.1 + EDR accessories
by Vincent Tong 09 Oct '12

09 Oct '12

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TemperatureSensor.app bug report
by Anders Grunnet-Jepsen 08 Oct '12

08 Oct '12

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iOS / Link Supervision Timeout
by Aaron Wright 06 Oct '12

06 Oct '12

I can't seem to find any information on Link Supervision Timeout in Core Bluetooth on the iOS side. We are experiencing an immediate disconnect / reconnect I wonder what the best way to handle this. Also, does anyone else experience this where a peripheral will connect / disconnect and then reconnect within a matter of milliseconds? _______________________________________________ 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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