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

Re: Connection timed out
by William Henderson 17 Jun '13

17 Jun '13

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Connection timed out
by Rick Mann 17 Jun '13

17 Jun '13

I get a lot of disconnects like this: cm:didDisconnect: <CBConcretePeripheral: 0xcb61400 UUID = <CFUUID 0xcb88f30> DEC75B53-6D1F-3E3C-864B-0801A5578854, Name = "Mattercam 1", IsConnected = NO> error: Error Domain=CBErrorDomain Code=6 "The connection has timed out unexpectedly." UserInfo=0x13447680 {NSLocalizedDescription=The connection has timed out unexpectedly.} I'm guessing I'll just re-connect in my code when this happens. Do I need to re-discover all the characteristics I have, or can I just use the ones I found before? -- 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: Connect to nokia pc suite
by Livio Isaia 15 Jun '13

15 Jun '13

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Re: Attribute handle
by Etan Kissling 14 Jun '13

14 Jun '13

No. Etan On 14.06.2013, at 17:43, Gábor Navota <gnavota(a)infomatix.hu> wrote: > Hello, > > Is it possible to get the attribute handle of a characteristic with core bluetooth? > > Best regards, > Gabor > > InfomatiX Kft. Forgach u. 9/B. H-1139 Budapest, Hungary > > This e-mail is for the use of the intended recipient(s) only. If you have received this e-mail in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not use, disclose or distribute this e-mail without the author's prior permission. We have taken precautions to minimize the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. Any views and/or opinions expressed in this e-mail are of the author only and do not represent the views of InfomatiX Kft or any other company within its group. > > Please consider the environment before printing this email. > > _______________________________________________ > 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/kissling%40oberon.ch > > This email sent to kissling(a)oberon.ch _______________________________________________ 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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Attribute handle
by Gábor Navota 14 Jun '13

14 Jun '13

Hello, Is it possible to get the attribute handle of a characteristic with core bluetooth? Best regards, Gabor InfomatiX Kft. Forgach u. 9/B. H-1139 Budapest, Hungary This e-mail is for the use of the intended recipient(s) only. If you have received this e-mail in error, please notify the sender immediately and then delete it. If you are not the intended recipient, you must not use, disclose or distribute this e-mail without the author's prior permission. We have taken precautions to minimize the risk of transmitting software viruses, but we advise you to carry out your own virus checks on any attachment to this message. We cannot accept liability for any loss or damage caused by software viruses. Any views and/or opinions expressed in this e-mail are of the author only and do not represent the views of InfomatiX Kft or any other company within its group. Please consider the environment before printing this email. _______________________________________________ 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: Bluetooth Low Energy Throughput and Rate Limiting
by Etan Kissling 14 Jun '13

14 Jun '13

Kendrick, yes, Apple is limiting throughput by restricting the number of packets sent to 4 per connection event (officially 6 - see http://stackoverflow.com/questions/10354613) My measurements at 37.50ms connection interval are as follows: Indications / Read / Write With Response : ~4 kbit/s Notifications / Write Without Response: ~20 kbit/s Graph for Notifications: http://www.scriptreactor.com/conn_interval-throughput.pdf When you go with Notifications / Write Without Response you need your own protocol to offer reliability, as such packets may be dropped at any time. Depends also on range and angles in which you hold the device. Etan On 14.06.2013, at 03:53, Kendrick Taylor <kendrick(a)sano.co> wrote: > I'm running some performance tests on Core Bluetooth for a project I'm > working on. It seems like apple is rate limiting the BLE connection, > even when the app is in the foreground. I've tried reading a > characteristic repeatedly and the throughput drops from a max of 400 > bytes a second, to 10 bytes a second after 12 seconds. This is > repeatable if I use indications, instead of reading a characteristic > repeatedly. Anyone have any insight on this issue? I may need higher > continuous throughput in bursts over 12 seconds for my project, but > not consistently. > > Thanks for any insight. > > Kendrick Taylor > > -- > Kendrick Taylor > Sano > kendrick(a)sano.co > sano.co > 703.855.5608 > _______________________________________________ > 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/kissling%40oberon.ch > > This email sent to kissling(a)oberon.ch _______________________________________________ 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: Connect to nokia pc suite
by Alexander Traud 14 Jun '13

14 Jun '13

> It works only if I change kBluetoothSDPUUID16ServiceClassSerialPort to > kBluetoothSDPUUID16ServiceClassOBEXFileTransfer, but in that case it's a > normal file transfer operation which doesn't list messages folder (it uses the > service record named "OBEX File Transfer" and not "Nokia PC Suite"). Now you got me. I mixed Nokia Series 40 with Nokia Symbian and confused myself totally. In Nokia Series 40, like your Nokia 5000, you have to use the standard OBEX File Transfer (FTP) service as normal. However, to get the special folders like /Messages you have to use an additional Who header in the OBEX SetPATH operation. The value of that Who header is "PC Suite". Please note: The path of folders changes with the current language of the phone. In German it would be /Mitteilungen. Therefore for the start, please, change the language of your phone to English. > It seems that OBEXSession is not able to connect to Nokia PC Suite service > even if I use a target uuid. > I just wonder why. > the SessionEvent type is kOBEXSessionEventTypeError > the serverResponseOpCode is 0x88 (?) > the errorData error is -21880 (kOBEXSessionTransportDiedError) <https://developer.apple.com/downloads/>, in the search box, enter "PacketLogger". As of today, this gives "Hardware IO Tools for Xcode" (Late July 2012) and PacketLogger 4.0.9. The PacketLogger helps you to understand what is happening behind the scenes. But be warned: Its OBEX parser is a bit buggy and might decode in a wrong way. Then, just have a look at the raw bytes. OBEX is not that complicated. > Do I have to create my own OBEX client? I don't know where to start. Can you > give me some hint? Information about this is spare and it would be pure luck to find information on Google. Please, start at my webpage which gives an general overview how everything is related/connected: <http://www.traud.de/gsm/>. The later chapters are a starting point with many links: PC Suite <http://www.traud.de/gsm/nokia.htm> OBEX <http://www.traud.de/gsm/OBEX.htm> SyncML <http://www.traud.de/gsm/SyncML.htm> The trick is to read these specifications, find similar tools, and do reverse engineering. > I tried with target, then with target and who. Target is only allowed in OBEX CONNECT. As client, Who is only allowed in operations which are not CONNECT. Or stated differently, the use of Target and Who headers is mutually exclusive. You use Who in the SetPATH operations. Target in the CONNECT operation. > The target I use is "f9ec7bc4-953c-11d2-984e-525400dc9e09". That is the correct FTP target header. By the way: In Nokia Series 40, the Serial Port Profile (SPP, Nokia PC Suite) uses its own protocol which multiplexes AT commands and OBEX. I am not aware of a public documentation of that. It was called FBus once. If your legislation allows it, you have to reverse engineer that. Therefore, I recommended the Nokia PC Suite in Windows <http://nds1.nokia.com/files/support/global/phones/software/Nokia_PC_Suite_g er_web.exe> plus tools like from LogoManager <http://www.logomanager.co.uk/php/products.php?id=51>. An open source project are Gammu/Wammu <http://wammu.eu/docs/manual/faq/config.html#faq-config-nokia> and gnokii. _______________________________________________ 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: Disconnect BT mouse
by William Henderson 14 Jun '13

14 Jun '13

Yes. Just connect to a lot of other Bluetooth devices. =) William > On Jun 13, 2013, at 7:58 PM, Jeff Schindler <jas001(a)gmail.com> wrote: > > Is there any way to disconnect a connected BT device (in this case, a mouse) either from code or the command line? I don't want to unpair it, but just disconnect it at the OS level (not just locally to my application). > > Thanks, > Jeff > _______________________________________________ > 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/william.c.henderson%4… > > This email sent to william.c.henderson(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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Disconnect BT mouse
by Jeff Schindler 14 Jun '13

14 Jun '13

Is there any way to disconnect a connected BT device (in this case, a mouse) either from code or the command line? I don't want to unpair it, but just disconnect it at the OS level (not just locally to my application). Thanks, Jeff _______________________________________________ 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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Bluetooth Low Energy Throughput and Rate Limiting
by Kendrick Taylor 14 Jun '13

14 Jun '13

I'm running some performance tests on Core Bluetooth for a project I'm working on. It seems like apple is rate limiting the BLE connection, even when the app is in the foreground. I've tried reading a characteristic repeatedly and the throughput drops from a max of 400 bytes a second, to 10 bytes a second after 12 seconds. This is repeatable if I use indications, instead of reading a characteristic repeatedly. Anyone have any insight on this issue? I may need higher continuous throughput in bursts over 12 seconds for my project, but not consistently. Thanks for any insight. Kendrick Taylor -- Kendrick Taylor Sano kendrick(a)sano.co sano.co 703.855.5608 _______________________________________________ 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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