July 2006 - Bluetooth-dev - lists.apple.com

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

10 Jul '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Thanks, 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.… So I got the phone to see my laptop vending the handsfree profile and was able to establish the connection by following the procedures in the spec. It seems that all I was lacking for the phone to see to see the powerbook was a Major Service Class of Audio on the powerbook's device class. Setting that through the Bluetooth Explorer.app allowed me to connect the two devices and establish the RFCOMM channel that HFP runs over. Now, the next step is to get an SCO audio connection established with the phone. I have read several accounts from 2003 how SCO wasn't available or couldn't be used, but hardly anything recent. I've been able to use the IOBluetoothAddSCOAudioDevice successfully to create an audio input/output device pair, but trying to select that device in the sound prefpane results in errors like Jul 10 03:01:42 HKCPBG4 kernel[0]: REQUIRE failure: mSCOConnectionHandle != 0 - file: /SourceCache/IOBluetoothFamily/ IOBluetoothFamily-175.3.10/Drivers/IOBluetoothSCOAudioDriver/ IOBluetoothSCOAudioDevice_new.cpp, line: 342 Jul 10 03:01:42 HKCPBG4 kernel[0]: REQUIRE failure: mBluetoothDevice ! = NULL - file: /SourceCache/IOBluetoothFamily/ IOBluetoothFamily-175.3.10/Drivers/IOBluetoothSCOAudioDriver/ IOBluetoothSCOAudioEngine_new.cpp, line: 236 in the system log. Is it even possible to use the current SCO Audio Device implementation to communciate with an Audio Gateway device? If so, how would I go about connecting it with the Built-in audio? That's probably a question better suited for the CoreAudio list, but I would like to know if my plan is even currently possible. I do think that the ability to see the full SDP data could be useful. Probably not for the average user, but a developer could likely find the extra data quite useful. Perhaps as an Inspection function of the Device Discovery List in Bluetooth Explorer. This email sent to site_archiver(a)lists.apple.com

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Re: Handsfree Profile (HFP) Implementation
by Bubba Giles 06 Jul '06

06 Jul '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com Thread-index: AcagnQrpSTTwNQyQEdubQQAKlacvWA== Thread-topic: Handsfree Profile (HFP) Implementation User-agent: Microsoft-Entourage/11.2.3.060209 _______________________________________________ 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 05 Jul '06

05 Jul '06

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Re: Handsfree Profile (HFP) Implementation
by Marco Pontil 05 Jul '06

05 Jul '06

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Handsfree Profile (HFP) Implementation
by Andrew Cooper 05 Jul '06

05 Jul '06

site_archiver(a)lists.apple.com Delivered-To: bluetooth-dev(a)lists.apple.com For reference, these are the specs on my development machine: PowerBook G4 15" 1.67G Bluetooth version 1.7.5f10 (using built-in bluetooth adapter) XCode 2.3 Mac OS X 10.4.7 Many thanks, Andrew Cooper Hello all, I am trying to implement and vend a Handsfree Profile for use with a cellphone. Following the "Providing a New Service" section in [1], modifying the plist in the RFCOMMServerSample example, and using the HFP 1.5 specification at [2](p.65), I believe that I successfully created a service definition plist which I can successfully read and register. Bluetooth Explorer.app's Local Device Information lists the following new service while my app is running (comments are my addition for this email): //ServiceRecordHandle 0x0000 = 0x00010001, //ServiceClassIDList = { ServiceClassHandsFree, ServiceClassGenericAudio} 0x0001 = { <111e>, <1203> }, //ServiceName 0x0100 = "AutoMac HandsFree", //SupportedFeatures 0x0311 = <0000>, //ProtcolDescriptorList = {{L2CAP}, {RFCOMM, channel #1}} 0x0004 = { { <0100> }, { <0003>, 0x01 } }, //LanguageBaseAttributeIDList = { Not sure, the 3rd value seems to be the offset for the ServiceName } 0x0006 = { 0x656e, 0x006a, 0x0100 }, //BluetoothProfileDescriptorList = {{ServiceClassHandsFree,0x0105}} 0x0009 = { { <111e>, <0105> } } As far as I can tell, these are the correct values according to the spec. Now, when I use my phone to search for new Handsfree devices, it does not find my machine. Also, PacketLogger.app does not capture any packets while the phone is searching, which seems odd. Is there anything else I need to do to let the phone see the new handsfree device? I noticed that there are a lot of checkboxes in the Class of Device section of Bluetooth Explorer, but I did not change them since I'm not exactly sure what they do. Perhaps I need to add Audio or Telephony to my machine's class? Also, I looked at the 1.0 version of the HFP spec [3], and the only difference I could see in the SDP definition was a different version number in the BluetoothProfileDescriptionList entry for Hands-Free: 0x0101 instead of 0x0105. Changing this had no effect. The phone is an "unlocked" Motorola V600 with BT file transfer support enabled. The BT module does work as I can exchange contacts, ringtones, and generic files with the phone. References: [1]http://developer.apple.com/documentation/DeviceDrivers/Conceptual/ Bluetooth/BT_Develop_BT_Apps/chapter_4_section_4.html [2]http://www.bluetooth.com/NR/rdonlyres/C0F90A55-BDE4-4FB3-A4FF- DAB0F137DBDF/1762/HFP15_SPEC_V10r00.pdf [3]http://www.bluetooth.com/NR/rdonlyres/ 94EAD32B-3E70-4AEC-9CD5-1E3F887A15F4/917/HFPSpecVersion1_0.pdf _______________________________________________ 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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