Re: PC104-DAS16jr/16

From: John Conner <conner_at_empiredi.com> · Date: Thu, 04 Sep 2003 21:01:00 -0600

An update....

The kernel Oops were due to compiling with gcc-3.3 (debian testing
default).  Recompiling with gcc-2.95 did not give the Oops.

At the moment the following combination works.
	Debian testing - updated today 20030904
	Linux kernel 2.4.17 - no patches, gcc-2.95
	comedi-0.7.65-cvs - from May 2002
	comedilib-0.7.20-2 - from Debian testing

This setup seems to require the use of timer mode. With out timer
mode the system just sets there. This happens with the cmd demo
program as well as my application. The comedi_config command is
	comedi_config --read-buffer 1024 pc104-das16jr/16 0x300,5,1,1,0,0,0,0,1

The system that does not work has a 2.4.20 kernel (gcc-3.2/3) and
comedi-0.7.66-cvs (pulled down on 20030417). Every thing else is 
the same. Tomorrow I'll try the compiler change and see if it makes
any differnce.

John Conner

> Amy, your answer was why I mentioned the oops. I have not gone back
> to see if it might be a soluting.
> 
> Dave assuming that I can reproduce the oops, a bug report will be
> filed. I'm not sure at the moment the problem is real. Given the
> other problems my guess is that they are not really bugs but a 
> configuration problem on my system. 
> 
> To get the job in Maimi going, I located and restored  a disk with
> 2.4.17-rtihl  and comedi-0.7.63-cvs (about May 30, 2002).  With 
> this version, the PC104-DAS16jr/16 runs fine in timed mode but
> just sets there in interrupt mode. I should know tomorrow if it works
> in the real world (that is setting on a toilet in a truckers 
> lounge in a rail yard - I kid you not :-) and that is better that
> a lot of locations.) 
> 
> Now that the old stuff is working again I'll try to figure what
> is broken in the newer setup..
> 
> 
> John
> 
> > On Tue, Sep 02, 2003 at 06:45:26PM -0700, Amy Baum wrote:
> > > I was only trying to help the guy who was having trouble
> > > running comedi_config by sharing my experience running it
> > > for the first time. Maybe he only needed to load another
> > > module. I didn't think he'd be interested in a stack trace.
> > 
> > 
> > Nevertheless, the bug tracking database _is_ interested.
> > 
> > 
> > 
> > dave...
> > 
> > 
> > _______________________________________________
> > comedi mailing list
> > comedi_at_comedi.org
> > https://cvs.comedi.org/cgi-bin/mailman/listinfo/comedi
> 
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