May 2023 - Bluetooth-dev - lists.apple.com

Re: Access iOS GATT Services over BR/EDR
by Matthias Ringwald via Bluetooth-dev 09 May '23

09 May '23

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=bluekitchen-gmbh.com; s=default; h=References:To:Cc:In-Reply-To:Date: Subject:Mime-Version:Content-Type:Message-Id:From:Content-Transfer-Encoding: Sender:Reply-To:Content-ID:Content-Description; bh=Y+3pl8kByv/Pe26h53lDUKT2hiNH5pfkMF24SbwJeDc=; b=nIf7cqTOoZRxkycoQ0xSwr/7j/ bd/N/cuEGIS9E3C6sxDbh72nywbrIgqtdiilVXf8RUMsffwmIO6V5VsrCqpSkOnZQapKMUJJToMQI j2+E5SEd2iytg/ji0u1MCIkPTZVclccBDMj9VnqNOpnbtqMvmReeiWYsj4gpJn1mweIQjxqoEtLoM SCuZoAc3vu1XPIVTm+wHXR8KHTOdB7mX+mlz2H1Ds1RrCNSyyWjY2LtcGWIwEKwVWvnJCuYs9wpkc gdKyKgqzsitZ3P6sIHqOE8XEYCxg4rx8W76dDyrC4krFNB32Tya6/jgawTGf1AXfNYPwheuNWkI3k czog4ubw==; Hi Duy Thanks for your reply. This not about accessing remote GATT Services via BR/EDR via the CoreBluetooth APIs from an iOS device. It's about reading the iPhone battery level from a device connected via BR/EDR in a headset/hands-free role to show on a head unit in a car or a dashboard on a motor bike As we can successfully query the iOS GATT Battery Service via LE, we've tried to use GATT over BR/EDR from the hands-free unit as the connection already exists for HFP HF/A2DP Sink. After getting the ATT PSM (0x1f) from the GATT SDP Service Record, we get an L2CAP Connection refused – no resources available' (0x04)' when trying to open the L2CAP Connection to that PSM. I'll attach PacketLogger files from our stack as well as from the iPhone. Please let me know if there's anything obviously wrong or If I should file a feedback/bug report with that. Best regards Matthias > On 4 May 2023, at 22:48, Duy Phan <duy_phan(a)apple.com> wrote: > > Hi Matthias, > It’s our intention for developers to have same access to GATT services over > BDR/EDR. > > Could you help file a feedback report and sysdiagnose (with logging profile) > so we can understand how you’re using the APIs? > Thank you! > Duy > >> On Apr 11, 2023, at 7:22 AM, Matthias Ringwald via Bluetooth-dev >> <bluetooth-dev(a)lists.apple.com> wrote: >> >> Hi there >> >> Is it possible to access iOS GATT Services, e.g. the Battery Service, via >> GATT over an existing BR/EDR Connection? >> >> As current iOS and macOS announce GATT over BR/EDR via an SDP record, I've >> tried to connect to it via the announced PSM 0x1f, but I get an L2CAP >> Connection refused – no resources available' (0x04)'. >> I've tried both as Central without other profiles being connected, as well >> as Peripheral, after iOS connected to our HFP HF profile? >> >> Why? A customer of our stack wants to build some kind of HFP HF device and >> has asked us if they can get a better battery status than the 5 levels from >> HFP. >> As iOS provides it's battery level, it's possible to create an additional LE >> connection to read the battery status, but it's would be way more elegant, >> and requires less logic, to access the battery service via >> the existing BR/EDR connection. >> >> Thanks >> Matthias >> >> — >> Dr. sc. Matthias Ringwald >> CTO and Co-founder of BlueKitchen GmbH, Zurich >> https://bluekitchen-gmbh.com <https://bluekitchen-gmbh.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 gatt-over-classic-from-accessory-2.zip

1 0

Re: Access iOS GATT Services over BR/EDR
by Duy Phan via Bluetooth-dev 04 May '23

04 May '23

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Hi Matthias, It’s our intention for developers to have same access to GATT services over BDR/EDR. Could you help file a feedback report and sysdiagnose (with logging profile) so we can understand how you’re using the APIs? Thank you! Duy > On Apr 11, 2023, at 7:22 AM, Matthias Ringwald via Bluetooth-dev > <bluetooth-dev(a)lists.apple.com> wrote: > > Hi there > > Is it possible to access iOS GATT Services, e.g. the Battery Service, via > GATT over an existing BR/EDR Connection? > > As current iOS and macOS announce GATT over BR/EDR via an SDP record, I've > tried to connect to it via the announced PSM 0x1f, but I get an L2CAP > Connection refused – no resources available' (0x04)'. > I've tried both as Central without other profiles being connected, as well as > Peripheral, after iOS connected to our HFP HF profile? > > Why? A customer of our stack wants to build some kind of HFP HF device and > has asked us if they can get a better battery status than the 5 levels from > HFP. > As iOS provides it's battery level, it's possible to create an additional LE > connection to read the battery status, but it's would be way more elegant, > and requires less logic, to access the battery service via > the existing BR/EDR connection. > > Thanks > Matthias > > — > Dr. sc. Matthias Ringwald > CTO and Co-founder of BlueKitchen GmbH, Zurich > https://bluekitchen-gmbh.com <https://bluekitchen-gmbh.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/duy_phan%40apple.com > > This email sent to duy_phan(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

1 0

Valid PSM values
by Dr. Michael 'Mickey' Lauer via Bluetooth-dev 02 May '23

02 May '23

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com I’m working on creating an OBD2/CAN+ENET adapter that communicates via a custom L2CAP protocol to the clients. Everything works pretty well except chosing the PSM. It seems there is only a handful of numbers allowed, for most I get an L2CAP error from CoreBluetooth when attempting to open the connection (Only from Apple devices though… when connecting from Linux it works fine). 0x0081 seems to work. Do you know why? Best Regards, Mickey. _______________________________________________ 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

1 0

Re: Access iOS GATT Services over BR/EDR
by Dr. Michael 'Mickey' Lauer via Bluetooth-dev 02 May '23

02 May '23

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com I don’t think it’s possible. CoreBluetooth shields a lot of the underlying details from us – for the better or worse. Cheers, :M: _______________________________________________ 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

1 0

Re: Bluetooth-dev Digest, Vol 20, Issue 2
by Kaveh Mohammad Pour via Bluetooth-dev 02 May '23

02 May '23

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1683004563; x=1685596563; h=to:subject:message-id:date:from:in-reply-to:references:mime-version :from:to:cc:subject:date:message-id:reply-to; bh=s3gBAD+yd36DilxBMY2lE3ItcTEMiGvAe2WX+myadYY=; b=KcSXjZQhxwXd4ORmfQfV3esM2SrzdkyNpq+HNo4/Q1Qs46jglcJ/TJ9xg4i/m3jDPp TxY8CIOTd0u00p0RHy4XHNtLSLDKphmMxEFGZsg68hpka76IUINp3swZH7qosM25Z5Cs z7khuaWRd9PL8QKI9r+r93jBCSiEEzEETvqyXIC8nOoJbK/Fjpua/ZC/3n/aqRwrdRxd cvGFaHJIgkD17gcAgX1lGJolxfk+y06x1mgpvIcEgpccWPHyrzJiyZyL5v9l3bEY35jf 5Ui0qtHwtC+LZiZCtdzcjOEixHHm4aFjqSmHayGZ4a9W4cqvbdDuYU3U40gblLJjVdH1 /NPw== On Wed, Apr 12, 2023 at 2:00 PM <bluetooth-dev-request(a)lists.apple.com> wrote: > Send Bluetooth-dev mailing list submissions to > bluetooth-dev(a)lists.apple.com > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.apple.com/mailman/listinfo/bluetooth-dev > or, via email, send a message with subject or body 'help' to > bluetooth-dev-request(a)lists.apple.com > > You can reach the person managing the list at > bluetooth-dev-owner(a)lists.apple.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Bluetooth-dev digest..." > > > Today's Topics: > > 1. Bluetooth-dev mailing list submissions (Kaveh Mohammad Pour) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 12 Apr 2023 02:52:05 -0500 > From: Kaveh Mohammad Pour <mp.kaveh(a)gmail.com> > To: bluetooth-dev(a)lists.apple.com > Subject: Bluetooth-dev mailing list submissions > Message-ID: > <CABppTXz4EdcEmJewnKw58SO0R=se= > d-SBnaKGbqy1DuRL6E5Ng(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > >

1 0