Message-ID: <4561FE99.1030201@xmission.com>
Date: Mon, 20 Nov 2006 12:14:33 -0700
From: Brad Midgley <bmidgley@xmission.com>
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To: BlueZ development <bluez-devel@lists.sourceforge.net>
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Subject: Re: [Bluez-devel] Gumstix / speed setting in Infineon PBA31308
Reply-To: BlueZ development <bluez-devel@lists.sourceforge.net>
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Brian

first off: the slower speed should be ok for sco since the audio stream
goes direct to the cpu, not through the hci connection. gumstix needs a
kernel driver that works with the pcm connection from bluetooth and
translates that into a kernel audio device. pcm is connected to
gumstix's NSSP i/o (PCM-clock goes to NSSP-clock, PCM-frame goes to
NSSP-frame, and PCM-in/out map to the NSSPTXD/TXD)

(it's not relevant, but fyi: rfcomm works at a different level. For
higher speeds what we need is for hciattach to negotiate 921k properly.
Nobody has worked it out as far as I know. I asked on this list in May
and Goetz Issel said he was working on this same chip in an embedded
device but I never heard if he got it working.)

Brad

> Hi folks.
> Does anybody know if rfcomm can now set the baud rate on the new 
> gumstix  Infineon PBA31308 module to the 921,600bps needed for SCO audio 
> to work to/from it?
> 
> Thanks,
> Brian.
> 
> 
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