On Sat, February 17, 2007 23:36, Tim Sailer said:
>
> On Sat, February 17, 2007 22:14, Tim Sailer said:
>> On Sat, February 17, 2007 19:53, Tim Sailer said:
>>>> It looks like the read timed out or something, and then each
>>>> subsequent
>>>> read is off. If it matters, the temperature readings had been reading
>>>> 185
>>>> (wrongly) up until the misread.
>>>
>>> I think I found the problem. I tried just about everything, but when I
>>> started owserver with '--timeout_serial 20', all my problems seem to
>>> have
>>> gone away for the devices that take a while to read, like the AAG
>>> barometer and the temp sensors. I'll load the bus up with every device
>>> I
>>> have and give it a try.
>>
>> Nope, that wasn't it. There's something about the timing. The read is
>> issued, but the code seems to give up, and every subsequent read is off
>> by
>> one value, since the reply to the read acatually happens. Paul, is there
>> any to clear the read buffer in OWNet.pm?
>
> Well, it ain't pretty, but it works...
>
> my $bpressure;
> $bpressure=$owserver->read("/$bus/$sn/TAI8570/pressure");
> if (!defined($bpressure))
> {
> $bpressure=$owserver->read("/");
> $owserver=OWNet->new("localhost:4304 -F");
> }
>
> This pulls the value waiting in the 'queue', and then resets the
> connection. I guess this is the bad part of persistant connections...
OK, it's working now. I had to rip out all the object oriented OWNet code
and go back to the old style OWNet::read(). Everything looks like it's
working. I still miss occasional reads on the AAG barometer, but I get
enough to make it work. I'll write up some basic documentation and
rerelease the perl code.
Tim
--
Tim Sailer
Coastal Internet, Inc.
www.buoy.com
631-399-2910
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