May 2012 - Bluetooth-dev - lists.apple.com

Re: BLE Options in Mac Mini
by Brian Tucker 04 May '12

04 May '12

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BLE Options in Mac Mini
by Badri K 04 May '12

04 May '12

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Re: Background BTLE Advertisement Intervals
by Joe Sines 03 May '12

03 May '12

Thank you, Joakim. I would be very eager to test any timings that you would suggest as you find them. Joe On May 3, 2012, at 4:57 PM, Joakim Linde wrote: > > Hi Joe, > > I can compile that information and share it on this list. It will be a couple of days before I can get to it. > > Thanks, > Joakim > > On May 3, 2012, at 1:19 PM, Joe Sines wrote: > >> Hello, >> >> I see that others here are seeing issues with >100ms advertising intervals causing a significant and erratic delay in background discovery. The recommendation of using 20ms advertising seems a bit harsh(as far as battery consumption goes). It is also well below the 100ms limit that the Bluetooth SIG has put on undirected non-connectable devices. I trust that efforts are being made to improve this situation, but for now it seems there may be some missing pieces to the puzzle. >> >> The current Apple Development Guidelines show a list of 645ms+ advertising intervals that are approved to work ideally with the current background discovery algorithm. I would like to see another list that would list some Apple-approved advertising intervals between 20ms to 100ms, and perhaps a few between 100ms to 645ms. This would seem necessary to properly support both connectable and non-connectable devices without choosing a "bad" timing (that may prove to have poor performance with the current CoreBluetooth algorithm). >> >> Are these intervals known? >> >> Cheers, >> Joe Sines > _______________________________________________ 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: Background BTLE Advertisement Intervals
by Joakim Linde 03 May '12

03 May '12

Hi Joe, I can compile that information and share it on this list. It will be a couple of days before I can get to it. Thanks, Joakim On May 3, 2012, at 1:19 PM, Joe Sines wrote: > Hello, > > I see that others here are seeing issues with >100ms advertising intervals causing a significant and erratic delay in background discovery. The recommendation of using 20ms advertising seems a bit harsh(as far as battery consumption goes). It is also well below the 100ms limit that the Bluetooth SIG has put on undirected non-connectable devices. I trust that efforts are being made to improve this situation, but for now it seems there may be some missing pieces to the puzzle. > > The current Apple Development Guidelines show a list of 645ms+ advertising intervals that are approved to work ideally with the current background discovery algorithm. I would like to see another list that would list some Apple-approved advertising intervals between 20ms to 100ms, and perhaps a few between 100ms to 645ms. This would seem necessary to properly support both connectable and non-connectable devices without choosing a "bad" timing (that may prove to have poor performance with the current CoreBluetooth algorithm). > > Are these intervals known? > > Cheers, > Joe Sines _______________________________________________ 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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Background BTLE Advertisement Intervals
by Joe Sines 03 May '12

03 May '12

Hello, I see that others here are seeing issues with >100ms advertising intervals causing a significant and erratic delay in background discovery. The recommendation of using 20ms advertising seems a bit harsh(as far as battery consumption goes). It is also well below the 100ms limit that the Bluetooth SIG has put on undirected non-connectable devices. I trust that efforts are being made to improve this situation, but for now it seems there may be some missing pieces to the puzzle. The current Apple Development Guidelines show a list of 645ms+ advertising intervals that are approved to work ideally with the current background discovery algorithm. I would like to see another list that would list some Apple-approved advertising intervals between 20ms to 100ms, and perhaps a few between 100ms to 645ms. This would seem necessary to properly support both connectable and non-connectable devices without choosing a "bad" timing (that may prove to have poor performance with the current CoreBluetooth algorithm). Are these intervals known? Cheers, Joe Sines _______________________________________________ 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: The operation could not be completed. (CBErrorDomain error 0.)
by Joakim Linde 03 May '12

03 May '12

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Re: BLE Peripheral value indication in the background
by Joakim Linde 03 May '12

03 May '12

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Re: Connection Parameters for reduce power consumption
by Joakim Linde 03 May '12

03 May '12

Hi Kim Hyung Joong, Most likely what happened is that your new connection parameters got rejected because they don't meet the requirements in the guidelines. Please try some different parameters to see if that helps. Thanks, Joakim On May 2, 2012, at 1:36 AM, Kim Hyung Joong wrote: > Hello, > > I have been working to reduce power consumption our BLE module. > (It almost same TI keyfob) > > In the document(BT design guidelines), there are rules about "connection parameters". > > Accoding to the rules, fixed connection parameters were applied. (for reduce power consumption) > > However, power consumption was not reduced. > > Sorry for my poor English. > > _______________________________________________ > 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: Can an iPad 3 be paired with an Phone 4s via BLE?
by Joakim Linde 03 May '12

03 May '12

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RE: Can an iPad 3 be paired with an Phone 4s via BLE?
by Alan Lawrence 03 May '12

03 May '12

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