August 2006 - Bluetooth-dev

Multiple RFCOMM instances - limitation
by Christian Martin 31 Aug '06

31 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Hi, Am I missing something here ? _______________________________________________ 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: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.… I currently developping an application in C and Objection C (mixed) on Mac OS X 10.4.7 with IOBluetooth framework of SDK 1.4.u I am able to go to the process of creating a instance and get data from the Bluetooth serial device. I am capable of doing the same for a second and third. Everything works fine. When I try to connect to 4th instance ... I sometime manage to connect and pair but eventually one of the three initally connected and paired is kicked out : I get kIOBluetoothRFCOMMChannelTerminateEvent (obviously one of the connection is closed). (All this is handled in the same application). I noticed in the archives that one user was having problems connecting six instances or 7 (the max is 7 obvioulsy)... But in my case, I cannot go further than 3. Most of the time, I get an error on calling IOBluetoothDeviceOpenConnection(...); Also, does it still hold true that only one Bluetooth USB dongle is supported by OS X ? Thx Christian Martin This email sent to site_archiver(a)lists.apple.com

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Re: Tutorials
by Bubba Giles 30 Aug '06

30 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Thread-index: AcbLzPa9NTmi7DfAEdu2iAAWy/ZWKg== Thread-topic: Tutorials User-agent: Microsoft-Entourage/11.2.5.060620 There are several sample programs in /Developer/Examples/Bluetooth And here is a starting place for Bluetooth APIs, as well as some Apple stack organizational documents: <http://developer.apple.com/documentation/HardwareDrivers/Bluetooth-date.htm l> HTH, jason > Hello, > > I am very interested in Bluetooth-programing and have some experience > with it from Linux. I would now like to start developing applications > using Bluetooth on OS X, but I'm having a hard time figuring out where > to start. Do you have any handy links, tutorials or other stuff that > might help? > > Thanks in advance. > > -Kristian _______________________________________________ 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: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Tutorials
by Kristian Evensen 28 Aug '06

28 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com User-agent: Thunderbird 1.5.0.5 (Windows/20060719) Hello, Thanks in advance. -Kristian _______________________________________________ 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: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.… I am very interested in Bluetooth-programing and have some experience with it from Linux. I would now like to start developing applications using Bluetooth on OS X, but I'm having a hard time figuring out where to start. Do you have any handy links, tutorials or other stuff that might help? This email sent to site_archiver(a)lists.apple.com

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Bluetooth Headphone Compatability
by Philip Ershler 17 Aug '06

17 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Thanks, Phil _______________________________________________ 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: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.… Hi, I've got a set of Jensen Bluetooth headphones with mic. While a I can successfully pair with my MBP (10.4.7), the sound quality is poor and most often after a minute or two of operation the bluetooth connection breaks. Trying to use the headphones with iTunes results in all manor of odd system behaviors and lockups. If I use the bluetooth interface that came the the headphones (which just accepts an analog input), the sound quality is actually quite amazing. Is there something about the bluetooth protocol that Jensen uses that is incompatible with the headphone protocol that is currently in 10.4.7? This email sent to site_archiver(a)lists.apple.com

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Local device capabilities
by Nigel Spon 14 Aug '06

14 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Nigel Spon _______________________________________________ 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: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.… Does anyone know what would be the appropriate means, if any, to determine if the local Bluetooth interface is v2.0? I can see a lot of IOBluetoothGetxxx calls, but none of them seem to address the question. Our device is 2.0 and we may need the extra bandwidth in some circumstances, so it would be nice to be able to warn the user if we can't get it. --- "No point in mentioning those bats, I thought. The poor bastard will see them soon enough." This email sent to site_archiver(a)lists.apple.com

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Re: Handsfree Profile (HFP) Implementation
by Zach Rosen 14 Aug '06

14 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com If you'd like to see it in action, there's a beta version available at: http://mirasoftware.com/BPE2/download/?com.mirasoftware.BPE2 Zach Rosen CEO and Developer mirasoftware.com reelintelligence.com On Aug 10, 2006, at 9:43 AM, mat davidson wrote: mat. On Aug 9, 2006, at 11:35 PM, Andrew Cooper wrote: Sincerely, Andrew Cooper _______________________________________________ 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: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.… I don't want to violate my NDA with Apple, but it pains me to see another developer struggling with the same issue that I banged my head on for over a year. Using the Mac as a headset/handsfree device has been possible since OS X 10.4.4 using the existing audio driver and some unpublished Bluetooth APIs. I am purposely being as vague as possible because the implementation details were given to me through an Apple Developer Technical Support incident under strict confidences. This is as close as you're going to get to driver information, Im the one who wrote it! So, it sounds like you're trying to use the Mac as a headset/ handsfree-device? Im pretty sure we didn't design that driver you're using to support such behavior. That driver only supports Handsfree-Gateway, the role your phone is currently playing. Its meant to send audio to headset and handsfree devices and is really really restrictive about device behavior that is out of spec. The good news is that we hope to change this in Leopard which unfortunately doesn't help you in the short term. Interesting that you're trying to make the Mac behave as a headset/ HF device, there could be some interesting scenarios there. Maybe support for that behavior will show up in Leopard as well. In the meantime, Im not sure there is much you can do. Heres the list of things involved if you absolutely need to move forwards: - Vend the Headset SDP service, which you may already have done - Write an IOAudioFamily driver that matches on the incoming RFCOMM "Service Level" connection from the AudioGateway device (phone) - Your driver would need to catch the incoming SCO connection, capture the data, format it, and route it into the audio system - You may also need an agent application as well to change the System Sound input/output to the newly loaded driver so the audio data can be heard/sent when the device connects. Sounds pretty nasty to me, but not impossible. Ofcouse we're willing to help, but you're looking at quite a load of work there. I have no idea where I should head to try and solve the problems listed in my last email. It seems like the SCO link isn't ever established with the phone. Is there a way to debug what's actually happening in the driver and why the link might be failing? I can find no documentation on the IOBluetooth audio driver. If I could get the link established and data flowing, I believe I could direct the audio data wherever I please, so getting the SCO link working is the final lynchpin in having my app working. Can anyone offer any suggestions at all? Is there a way to contact Apple more directly for documentation on their driver? _______________________________________________ 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: http://lists.apple.com/mailman/options/bluetooth-dev/mddavids% 40apple.com This email sent to mddavids(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: http://lists.apple.com/mailman/options/bluetooth-dev/zrosen% 40mirasoftware.com This email sent to zrosen(a)mirasoftware.com This email sent to site_archiver(a)lists.apple.com

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Re: Handsfree Profile (HFP) Implementation
by Andrew Cooper 10 Aug '06

10 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.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: http://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: Handsfree Profile (HFP) Implementation
by mat davidson 10 Aug '06

10 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.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: http://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: Handsfree Profile (HFP) Implementation
by Andrew Cooper 10 Aug '06

10 Aug '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Sincerely, Andrew Cooper _______________________________________________ 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: http://lists.apple.com/mailman/options/bluetooth-dev/site_archiver%40lists.… I have no idea where I should head to try and solve the problems listed in my last email. It seems like the SCO link isn't ever established with the phone. Is there a way to debug what's actually happening in the driver and why the link might be failing? I can find no documentation on the IOBluetooth audio driver. If I could get the link established and data flowing, I believe I could direct the audio data wherever I please, so getting the SCO link working is the final lynchpin in having my app working. Can anyone offer any suggestions at all? Is there a way to contact Apple more directly for documentation on their driver? This email sent to site_archiver(a)lists.apple.com

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