[linux-audio-dev] HELP:porting linux audio driver to RTLinux(rtlinux core driver)

Jan Depner eviltwin69 at cableone.net
Fri Apr 8 17:02:39 UTC 2005

On Fri, 2005-04-08 at 16:25, Fons Adriaensen wrote:
> On Fri, Apr 08, 2005 at 11:04:29AM -0500, Jan Depner wrote:
> > IIRC part of it was servicing IRIG-B interrupts.
> The easiest way to input IRIG-B is as an audio signal via a
> soundcard, and use a software decoder. That was one my first
> jobs when I joined Alcatel Space more than 10 years ago :-)
> We are still using that code -- it takes less than 0.1% of
> available CPU on today's systems, and provides sub-microsecond
> accuracy.

    That's about the time frame that we started using them.  Most
everything now is time tagged at the sensor so it's much less of a
problem than it used to be.


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