Re: [Bluez-devel] Gumstix / speed setting in Infineon PBA31308

[Brian Smith <brian.john.smith@gmail.com>]

Thanks again for the reply Brad. It is interesting for me to see how the 
bluetooth hardware/software works. Thanks for your ongoing work on Linux 
Bluetooth too.

Brad Midgley wrote:
> Brian
>
>   
>> Do you know if the gumstix's NSSP is visible in userspace?
>>     
>
> yes but you'll have to dig into the wiki to get the details and the
> results may be subpar even running as root with a negative nice value.
>
>  I might have
>   
>> a poke around in the kernel and try and get the audio stream working. 
>> (there looks to be some docu in the kernel about it).  I think 
>> carwhisperer can get a SCO session open at least (I think). might play 
>>     
>
> You open an rfcomm connection to the headset and use some AT commands to
> do things. It's really quite simple (get the headset profile docs at
> bluetooth.com)
>
>   
>> with that. Is your 'scoot' program available? Do you have any pointer so 
>> more documentation on this stuff? If the audio is streamed direct to the 
>>     
>
> I won't write scoot after all... we're putting things together in a more
> general way.
>
>   
>> CPU once sco is opened, why is it necessary for the hci connection to 
>> run at 912k ? Is there a choice of whether to take the audio from hci or 
>> direct from pcm then?
>>     
>
> it's not necessary for sco. 921k would be nice for stereo audio.
>
> on csr adapters it's well known how to kick them back and forth between
> pcm and hci for sco but I don't know about this adapter.
>
> Brad
>
>
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