August 2012 - Bluetooth-dev

Re: How do I reconnect with App in the background.
by Joakim Linde 21 Aug '12

21 Aug '12

Hi Jim, Andras is correct, Core Bluetooth will try to connect to the device while the app is in the background or the screen is off. Andras, please file a bug report at bugreport.apple.com with your issue and we'll take a look at it. Thanks, Joakim On Aug 21, 2012, at 11:30 AM, András Kövi wrote: > Hi Jim, > > if you issue a connectPeripheral call in the didDisconnectPeripheral > callback, the phone will reconnect to the device as soon as it becomes > reachable again. You have nothing else to do, this is happening > automatically. If in 2 seconds, then in 2 seconds, if 3 months, then 3 > months. The framework will invoke the didConnect callback when it > happens. I tried this. > > But note that this reconnect may take longer than when the app is in > the foreground. For some reason, backgrounded scanning is 55 times > slower than in the foreground and I suspect something similar is > affecting the connection times too. > > My issue, however, is that the peripheral attribute write requests are > somehow not delivered to the app in background. Could you tell me what > mechanism do you use to communicate with the device when in the > background? > > Thanks, > Andras > > 2012/8/21 Jim Gamache <jamespgamache(a)gmail.com>: >> Joakim, >> I am designing a medical device which is being worn and using the >> Iphone as a gateway. When my app is in the background, and the user >> moves out of range, I get the didDisconnectPeripheral event, and this >> will reconnect if the device is back in range. However, without a >> timer running I don’t know how to keep retrying to reconnect. It could >> be hours later. >> I tried having my device send notifications, but once disconnected, >> the iphone doesn’t receive these. It is not acceptable to make the >> user hit a button on the phone to reconnect. >> >> 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/allprog%40gmail.com >> >> This email sent to allprog(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/joakim%40apple.com > > This email sent to joakim(a)apple.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: How do I reconnect with App in the background.
by András Kövi 21 Aug '12

21 Aug '12

Hi Jim, if you issue a connectPeripheral call in the didDisconnectPeripheral callback, the phone will reconnect to the device as soon as it becomes reachable again. You have nothing else to do, this is happening automatically. If in 2 seconds, then in 2 seconds, if 3 months, then 3 months. The framework will invoke the didConnect callback when it happens. I tried this. But note that this reconnect may take longer than when the app is in the foreground. For some reason, backgrounded scanning is 55 times slower than in the foreground and I suspect something similar is affecting the connection times too. My issue, however, is that the peripheral attribute write requests are somehow not delivered to the app in background. Could you tell me what mechanism do you use to communicate with the device when in the background? Thanks, Andras 2012/8/21 Jim Gamache <jamespgamache(a)gmail.com>: > Joakim, > I am designing a medical device which is being worn and using the > Iphone as a gateway. When my app is in the background, and the user > moves out of range, I get the didDisconnectPeripheral event, and this > will reconnect if the device is back in range. However, without a > timer running I don’t know how to keep retrying to reconnect. It could > be hours later. > I tried having my device send notifications, but once disconnected, > the iphone doesn’t receive these. It is not acceptable to make the > user hit a button on the phone to reconnect. > > 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/allprog%40gmail.com > > This email sent to allprog(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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How do I reconnect with App in the background.
by Jim Gamache 21 Aug '12

21 Aug '12

Joakim, I am designing a medical device which is being worn and using the Iphone as a gateway. When my app is in the background, and the user moves out of range, I get the didDisconnectPeripheral event, and this will reconnect if the device is back in range. However, without a timer running I don’t know how to keep retrying to reconnect. It could be hours later. I tried having my device send notifications, but once disconnected, the iphone doesn’t receive these. It is not acceptable to make the user hit a button on the phone to reconnect. 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/site_archiver%40lists… This email sent to site_archiver(a)lists.apple.com

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RE: App auto start on iAP device connection
by Alan Lawrence 21 Aug '12

21 Aug '12

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App auto start on iAP device connection
by Alan Lawrence 20 Aug '12

20 Aug '12

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RE: CBPeripheralManager Implementation
by Jonathan Rosen 20 Aug '12

20 Aug '12

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Re: Not receiving BLE events in background
by m.kroll 20 Aug '12

20 Aug '12

Kind Regards/Mit freundlichen Grüssen, Dr. Michael Kroll. --- Blog: http://www.mkroll.mobi Forum: http://forum.mkroll.mobi --- Blog: http://www.mkroll.mobi Forum: http://forum.mkroll.mobi _______________________________________________ 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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CBPeripheralManager Implementation
by R. Justin 20 Aug '12

20 Aug '12

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Re: Not receiving BLE events in background
by Joakim Linde 17 Aug '12

17 Aug '12

--- Blog: http://www.mkroll.mobi Forum: http://forum.mkroll.mobi _______________________________________________ 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 17 Aug '12

17 Aug '12

--- Blog: http://www.mkroll.mobi Forum: http://forum.mkroll.mobi _______________________________________________ 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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