Re: [Bluez-devel] SCO over UART

[David Bannach <david.bannach@umit.at>]

brad,

the mail from infineon was signed with:

    infineon product support
    lb

we are now trying external bt adapters with csr chipset. they are said 
to support sco over hci-uart.

if the pxa in the qbic supports a pcm interface and the effort for 
adapting a driver is not too big we might try this option too.

david

Brad Midgley wrote:

> David,
>
> Who did you talk to at infineon? Gumstix is switching to their 
> PBA31307 chip which is also supposed to support sco over hci (it's 
> hinted at in their docs) but not spelled out anywhere. And it 
> shouldn't be end-of-lifed all that soon...
>
> I would hope that all three chips behave the same for sco...
>
> Gumstix is going to cover the bases with pcm too. When they switch to 
> the PBA, they are going to wire the sco pcm connections to one of 
> xscale's pcm i/o. We should be able to use sco over pcm.
>
> Sco over pcm will require some devel work but it might actually be the 
> perfect time to use libalsa since it will just be a regular pcm driver 
> with extra signaling on top for connect/disconnect/volume.
>
> Brad
>
> David Bannach wrote:
>
>> brad,
>>
>> this is the answer from infineon (after waiting a couple of weeks):
>>
>> "ROK104001 has PD status (Product Discontinuation). Last order date 
>> is November 31, 2005.
>> For the Product Discontinuation please click 
>> http://www.infineon.convergy.de/upload/documents/2005/cPD_036_05.pdf
>> Infineon has no other BT with embedded flash.
>>
>> ROK104001 do not support SCO-traffic via HCI feature.
>>
>> Inquiry: We would like to transfer SCO-traffic via HCI. Is this 
>> possible with the ROK104 001?"
>>
>>
>>
>> for testing i used the tools 'scotest' and 'hstest' to prevent 
>> running into trubles with btsco/alsa.
>>
>> david
>>
>>
>> Brad Midgley wrote:
>>
>>> David,
>>>
>>> It doesn't seem to help anything...
>>>
>>> # hcitool cmd 0x3f 0x001d 0x00
>>> < HCI Command: ogf 0x3f, ocf 0x001d, plen 1
>>>   00
>>> > HCI Event: 0x0e plen 4
>>>   07 1D FC 00
>>>
>>> but then I haven't been able to confirm that I've done all the right 
>>> things to get btsco to work on gumstix.
>>>
>>> This doesn't look right:
>>>
>>> btsco v0.4a
>>> Device is 0:0
>>> Voice setting: 0x0060
>>> RFCOMM channel 2 connected
>>> speaker volume: 0 mic volume: 0
>>> driver is in use
>>> Can't connect SCO audio channel
>>> : Device or resource busy
>>>
>>> where the "driver is in use" message first appears when trying to 
>>> play music to the audio device.
>>>
>>> Brad
>>>
>>> David Bannach wrote:
>>>
>>>> brad,
>>>>
>>>>> What is the ericsson command and how do you inject it into hci?
>>>>>
>>>>> Is the rok101008 similar in this respect to the rok104001? That's 
>>>>> what's on the gumstix.com board and I've been *very* interested in 
>>>>> getting sco working with this. I thought it couldn't be coaxed 
>>>>> into using hci.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> the command is "ericsson_set_sco_data_path". i found it in this 
>>>> document (only): 
>>>> http://www.vs.inf.ethz.ch/res/proj/smart-its/dl/ROK_101_007_revR1C-HCI_ericsson_specific.pdf 
>>>>
>>>>
>>>> i use hcitool for sending the command to the module, e.g. the 
>>>> following line will set the sco mapping to hci:
>>>>
>>>>    hcitool cmd 0x3f 0x001d 0x00
>>>>
>>>> the rok101008 and rok104001 seem very similar. at least the command 
>>>> above returns a positive response on both devices. i did not notice 
>>>> differences of these devices so far. actually i want to get sco 
>>>> running on the rok104001 which is built into a qbic (pxa based 
>>>> wearable) but it's easier to try things with an external module 
>>>> attached to a notebook.
>>>>
>>>> i'm still having the problem that bluez does not send any sco data 
>>>> to the module. i'm really curious about your results.
>>>>
>>>> david
>>>>
>>>>
>>>> -------------------------------------------------------
>>>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>>>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
>>>> Practices
>>>> Agile & Plan-Driven Development * Managing Projects & Teams * 
>>>> Testing & QA
>>>> Security * Process Improvement & Measurement * 
>>>> http://www.sqe.com/bsce5sf
>>>> _______________________________________________
>>>> Bluez-devel mailing list
>>>> Bluez-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>>>
>>>
>>>
>>>
>>>
>>> -------------------------------------------------------
>>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
>>> Practices
>>> Agile & Plan-Driven Development * Managing Projects & Teams * 
>>> Testing & QA
>>> Security * Process Improvement & Measurement * 
>>> http://www.sqe.com/bsce5sf
>>> _______________________________________________
>>> Bluez-devel mailing list
>>> Bluez-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>>
>>
>>
>>
>
>
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
> Practices
> Agile & Plan-Driven Development * Managing Projects & Teams * Testing 
> & QA
> Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel




-------------------------------------------------------
SF.Net email is sponsored by:
Tame your development challenges with Apache's Geronimo App Server. 
Download it for free - -and be entered to win a 42" plasma tv or your very
own Sony(tm)PSP.  Click here to play: http://sourceforge.net/geronimo.php
_______________________________________________
Bluez-devel mailing list
Bluez-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-devel