Subject:
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Re: multiplexor and legOS
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Mon, 4 Feb 2002 23:12:22 GMT
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Viewed:
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2238 times
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#include <sys/time.h>
void systime_set_timeslice (unsigned char slice);
include/sys/time.h:43-45:
#ifdef CONF_TM
#define TM_DEFAULT_SLICE 20 file://!< default multitasking timeslice
#endif
hope that helps,
Albert
"Michael J Ash" <mikeash@csd.uwm.edu> wrote in message
news:Pine.OSF.3.96.1020204011226.17362A-100000@alpha3.csd.uwm.edu...
> On Sun, 3 Feb 2002, Mark Falco wrote:
>
> > well anyone who looked at the code I attached may have notcied that I • had one
> > of the msleeps commented out. Oops, with this now uncommented I at • least see
> > the second and third light sensors pulse on, but only for an extremely • short
> > time. Suring the 1s sleep that follows selecting the port it is the 1st • light
> > sensor that is always lit. Any thoughts would still be appreciated, • if/when I
> > figure it out I'll be sure to post what I was doing wrong. I've now got • a
> > rotation sensor hooked up to a regular sensor port and am using it to • vary the
> > pulse length :)
>
> Don't ask me for a cite, but I seem to remember something about msleep
> only having 20ms granularity. If that's the case, your msleep(10) is
> either not sleeping at all or is sleeping 20ms, either one of which could
> cause problems.
>
> I'd suggest at the very least verifying your timing using sys_time in the
> code. If msleep indeed isn't accurate enough, then you could make some
> kind of busy-waiting loop.
>
> --
> "From now on, we live in a world where man has walked on the moon.
> And it's not a miracle, we just decided to go." -- Jim Lovell
>
> Mike Ash - <http://www.mikeash.com/>, <mailto:mail@mikeash.com>
>
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Message is in Reply To:
 | | Re: multiplexor and legOS
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| (...) Don't ask me for a cite, but I seem to remember something about msleep only having 20ms granularity. If that's the case, your msleep(10) is either not sleeping at all or is sleeping 20ms, either one of which could cause problems. I'd suggest (...) (23 years ago, 4-Feb-02, to lugnet.robotics.rcx.legos)
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