On Saturday 11 June 2005 04:53 pm, Jan Kandziora wrote:
> Serg (and anybody else who may it concern),
>
> I got some problems with owtcl (owfs-2.1p0RC-1). I connected a single
> DS2406 to an 1-Wire/USB-adapter and used owtcl to control a single LED,
> hooked up on its PIO pin. Unfortunately, it works *a little bit*, so I
> think I found a serious bug in owtcl or owlib.
>
> Please teak a look into the test code below. The first 10 to 70 (varies)
> cycles of the loop the LED blinks but I get an
>
> unknown error 4294967295
>
> After about 2..5s (varies), I get an
>
> invalid argument
>
> And the DS2406 output does not change any more. Any more info needed?
>
> Kind regards
>
> Jan
Works fine from Shell scripts.
DS9490 USB adapter.
Newest code from CVS
A few chips on board, and a 3-pin 2406
Ran the script:
while : ; do \
echo "1" > /mnt/1wire/12.C4DF1F000000/PIO.A \
sleep .2 \
echo "0" > /mnt/1wire/12.C4DF1F000000/PIO.A \
sleep .3 \
done
Which has been blinking very nicely for a while, now.
Next removed the pauses, since you don't pause. Still works fine (faster).
Next, tried perl:
perl -MOW -e "my \$p=qq[/12.C4DF1F000000/PIO.A];OW::init(qq[u]);while(1)
{ OW::put(\$p,1);OW::put(\$p,0)}"
Blinks even faster.
All I can conclude is that:
1. owtcl has a problem
2. Distribution differences (SuSE 9.2 here)
3. Slightly newer version here.
4. Hardware problem.
I'm voting for 1.
Why not try the scripts I list above (owfs was invoked for the shell script
with "/opt/owfs/bin/owfs -u /mnt/1wire" ) to see if we can further figure
this out.
(Of course substitute your DS2406's serial number).
Paul
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