October 2015 - Bluetooth-dev

Re: ANCS constantly re-sending notifications?
by Martijn The 28 Oct '15

28 Oct '15

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ANCS constantly re-sending notifications?
by Clem Taylor 27 Oct '15

27 Oct '15

I'm working on completing the firmware for a peripheral that is using ANCS. I'm trying to tune the power consumption by dynamically changing connection interval. Longish interval when nothing is going on and dropping the interval back down when a new notification arrives. In adding support for this I noticed that iOS 9.0.x and 9.1 seem to be constantly re-sending all the active notifications periodically as 'added' events (would have expected 'modified' if something changed). The only thing that seems to change is the the 'pre-existing' flag is set on the re-transmitted notifications. This is not the result of a disconnect/reconnect, the connection is established the entire time. The period between re-sends is ~30s, ~60s, ~90s, ~180s, ~240s (it might be backing off, not sure). Any ideas what this is for? It results in needless traffic and wastes power on both sides (especially for a device with a tiny battery). I don't remember seeing this behavior pre-9.x. Is there something I'm doing wrong that is causing iOS to re-transmit? Many thanks, Clem _______________________________________________ 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: iOS 9 Background Discovery
by Andrew H 27 Oct '15

27 Oct '15

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iOS 9 Background Discovery
by Gabriel Sharp 26 Oct '15

26 Oct '15

In iOS 8 and below when two iOS devices were acting as Central + Peripheral, if either device was unlocked CB would scan for and discover central devices successfully. Since iOS 9 this doesn’t happen, instead the app must be opened (even after being launched previously and running in background) for any discovery to take place. Is this an intended change or an unintended bug? Thanks all _______________________________________________ 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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Pairing dialog disappearing
by Ramin Firoozye 19 Oct '15

19 Oct '15

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Re: CBPeripheralDelegate -peripheral:didModifyServices:
by Robert Carlsen 19 Oct '15

19 Oct '15

Martijn, Thanks for the follow-up. I believe that the firmware had not correctly implemented the module vendor’s API for sending an indication on Service Changed. I worked with our firmware engineer and the vendor’s field application engineer to correct the implementation and now the Core Bluetooth didModifyServices: API is being called as expected when the GATT database is changed on the peripheral. Cheers! -robret > On Oct 19, 2015, at 4:06 PM, Martijn The <martijn(a)pebble.com> wrote: > > Hi Robert, > > Yes, we're seeing that method getting called when our (bonded) device sends a value update indication for the "Service Changed" characteristic with the handle range that has changed (only send it after iOS has subscribed to it). iOS will then perform a service discovery and call that method as a result. > > Martijn > > Pebble Time - Awesome Smartwatch, No Compromises > http://www.pebble.com/ > Tel: +1 (650) 308-9383 / +31(0)619151407 > > On Wed, Oct 14, 2015 at 1:01 AM, Robert Carlsen <robert(a)robertcarlsen.net> wrote: > I’m not having success receiving this delegate method with a bonded peripheral which modifies it’s services while connected. > > We’re confirming with the module vendor that it correctly implements the Service Changed characteristic. Using the vendor’s (Windows-based) tool, I can see that the Service Changed characteristic is visible. > > The only mention of didModifyServices: in a cursory search of the bluetooth-dev archives is below, but it’s light on details: > http://prod.lists.apple.com/archives/bluetooth-dev/2015/Feb/msg00004.html > > Has anyone successfully gotten a callback on the didModifyServices: method (using a non-iOS peripheral)? > > Thank you, > -robert > _______________________________________________ > 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/martijn%40getpebble.c… > > This email sent to martijn(a)getpebble.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: CBPeripheralDelegate -peripheral:didModifyServices:
by Martijn The 19 Oct '15

19 Oct '15

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CBPeripheralDelegate -peripheral:didModifyServices:
by Robert Carlsen 13 Oct '15

13 Oct '15

I’m not having success receiving this delegate method with a bonded peripheral which modifies it’s services while connected. We’re confirming with the module vendor that it correctly implements the Service Changed characteristic. Using the vendor’s (Windows-based) tool, I can see that the Service Changed characteristic is visible. The only mention of didModifyServices: in a cursory search of the bluetooth-dev archives is below, but it’s light on details: http://prod.lists.apple.com/archives/bluetooth-dev/2015/Feb/msg00004.html Has anyone successfully gotten a callback on the didModifyServices: method (using a non-iOS peripheral)? Thank you, -robert _______________________________________________ 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: OS X El Capitain automatically connects to devices, which it should not.
by Roland King 10 Oct '15

10 Oct '15

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Re: OS X El Capitain automatically connects to devices, which it should not.
by Konstantin K. 09 Oct '15

09 Oct '15

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