RFC: RTOS for Calypso

Harald Welte laforge at gnumonks.org
Thu May 19 07:36:38 UTC 2011

Hi Gregory,

On Mon, May 16, 2011 at 02:21:45PM -0700, Gregory Nutt wrote:
> I heard through the grape vine that you are considering using NuttX.
>  I don't want to influence your decision, but if the decision is
> final, I would like to offer any support to the project that I can
> give.

thanks a lot for your feedback and assistance, it is very much

> > I have a c5 DSP bridge driver somewhere around on my backup disks as
> > well.  I never released it into NuttX because there was never any
> > need.  Perhaps that could be useful now.
> These DSP bridge drivers present interfaces to load programs into the
> DSP and to support an integrated, seamless messaging system between
> the ARM7 and the DSP.
> The DSP interfaces differ from chip to chip and the drivers that I was
> referring were targeted for uClinux.  However, if that is something
> you are interested in, I would be happy to do the port a driver and
> integrate DSP messaging with the NuttX messaging.

The DSP/ARM interface on the Ti Calyspo is very much defined by the mask
rom code in the DSP.  I think it is extremely GSM specific, and we
already have full support for it in our existing osmocom-bb code... so
I don't think we would be able to base this on anything existing.

- Harald Welte <laforge at gnumonks.org>           http://laforge.gnumonks.org/
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