April 2013 - Bluetooth-dev - lists.apple.com

Re: how to change BLE MTU on ios
by Matthew Chung 03 Apr '13

03 Apr '13

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how to change BLE MTU on ios
by 寇凡 03 Apr '13

03 Apr '13

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OOB pairing in BTLE?
by Rick Mann 01 Apr '13

01 Apr '13

Hi. We'd like to use a QR code on our BTLE device with our app to securely connect. I didn't see anything in the Core Bluetooth API for setting the OOB key. Is there a mechanism? Thanks! -- 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: Battery Usage - Connect vs. Scan - App in Background
by Stephen Jablonski 01 Apr '13

01 Apr '13

Hi Mike, I can't speak in exact battery consumption, but I can tell you that from our tests in the past that neither had a significant impact on our battery life at all. Even better, when our test iPod Touches are in peripheral mode we've had them last for many days in the background without draining the battery (only app running at the time). I would like to assume that in a central role you would see much the same. BTLE is meant to be run at a very low power consumption. As for the discovery time… it varies. iOS ramps up and down the amount of times it listens depending if your app is in the foreground or background. There is no exact number. If you ramp up the advertising rate on your peripheral device it will connection much faster. In our test cases we saw anything from 5 seconds to 40. It all depends on the you listening at the same time your advertising. That will always change. Hope that helps. Sorry that there is no "conclusive" numbers. - Steve Jablonski On Apr 1, 2013, at 5:23 PM, Michael Farley <michael.farley(a)gmail.com> wrote: > What is the most power efficient way to find out a known BLE device is > within range, while the app is in the background? Please assume that > the BLE device has not been seen during this background scan (i.e. I'm > aware of no-duplicates when you're in the background). iOS device is > the central device, and the "BLE device" is the peripheral. > > I already have the UUID of said BLE device, so I can issue a > connectPeripheral(). Alternatively, I could issue a > scanForPeripheralsWithServices() to find the device. Is one better > than the other in terms of iOS battery consumption? How about > "discovery" time (i.e. would I get a didConnectPeripheral() call > faster than I would get a didDiscoverPerpheral() call)? > > Thanks in advance, > Mike > _______________________________________________ > 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/stevejabs%40gmail.com > > This email sent to stevejabs(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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Battery Usage - Connect vs. Scan - App in Background
by Michael Farley 01 Apr '13

01 Apr '13

What is the most power efficient way to find out a known BLE device is within range, while the app is in the background? Please assume that the BLE device has not been seen during this background scan (i.e. I'm aware of no-duplicates when you're in the background). iOS device is the central device, and the "BLE device" is the peripheral. I already have the UUID of said BLE device, so I can issue a connectPeripheral(). Alternatively, I could issue a scanForPeripheralsWithServices() to find the device. Is one better than the other in terms of iOS battery consumption? How about "discovery" time (i.e. would I get a didConnectPeripheral() call faster than I would get a didDiscoverPerpheral() call)? Thanks in advance, Mike _______________________________________________ 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: Characteristic notification on iPad
by Alexey Grechaninov 01 Apr '13

01 Apr '13

Just want to let you know that this issue has been fixed in 6.1.3 > Thanks for confirmation! > > Please let know: > > 1. Did you submit this bug to Apple? > 2. Did you checked it with 6.1.3 beta 2 ? (Unfortunately I have no additional hardware to test...) > > > 10.03.2013, в 22:09, Arvydas Sidorenko <asido4(a)gmail.com> написал(а): > >> On Sun, Mar 10, 2013 at 8:37 AM, Alexey Grechaninov <alex(a)beetsblu.com> wrote: >>> I'm working on notification of changed characteristic and noticed that CBCentralManager running on iPad 3 simply does not getting notifications from CBPeripheralManager running on iPhone 5. >> >> I had the same issue and I was told that notifications/indications do >> not work until at least iOS 6.1 beta 4. >> The solution for now could be a periodic polling. > _______________________________________________ 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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