Re: [Bluez-devel] Bluetooth headset problems.

[James Courtier-Dutton <James@superbug.demon.co.uk>]

Cozza wrote:
> Hi,
> 
> I believe that there is a problem with the hci-usb driver. I performed some
> brief investigations which I posted earlier to this mailing list.
> 
> Are you using a USB device? I've used the same code and Bluetooth headset
> with a PC card Bluetooth adaptor and everything worked fine.
> 
> Both Bluetooth devices use the CSR chipset, but the UART one using the BCSP
> protocol works whereas the USB one misses half the data packets, as you
> suggest.
> 
> My earlier message was posted on 20th June, entitled "SCO problem with USB
> devices" - I'd be interested to see if your problem looks the same. I think
> it possibly is, from what you've posted.
> 
> I haven't yet got around to investigating the problem with the USB stack -
> but I have the same problem, if it helps! If you are in a rush, then PC card
> devices seem to work at the moment...
> 
> Regards,
> 
> Colin
> 
> 
> 
> 
I have made some progress. I can now record audio from the headset 
without it loosing any samples. I.e. I can record 8 bit PCM at 8000hz 
and it sounds fine. Before it was loosing samples and recording at more 
like 4000hz.
Once I get playback to work, I will post a patch to this list.
Cheers
James




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