Hmm, that's a good question. My init line is as follows:
OW::init("$port --timeout_directory=1 --timeout_presence=1
--timeout_volatile=1 --timeout_stable=1");
Should I add other flags? Sorry, I don't understand how the caching
works, I thought that setting the above timeouts to 1 would effectively
stop caching...
Thx.
Chris.
Paul Alfille wrote:
> uncached?
>
> On Feb 19, 2008 2:29 PM, Chris Maresca <[EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>> wrote:
>
> I wrote the code in Perl. Basically, it's a giant while() statement
> that calls OW::get twice each loop. Each time OW::get is called, it
> stuffs the list of whatever gets returned into an array, then compares
> the two arrays for differences. If there is a difference, it
> prints out
> the device ID.
>
> It works, but not very reliably. I found I had to insert a sleep
> statement (for 1 second) or it would not pickup new devices. I'm now
> thinking that perhaps I should only do the baseline scan every 10
> loops
> or something.
>
> Chris.
>
> Paul Alfille wrote:
> > In my tests, OWFS can read and respond in < 0.1 second.
> >
> > There are some tricks for fast operation:
> > 1. Segment the 1-wire bus with separate a BUSMASTER for the chips
> > being polled.
> > 2. Don't use a DS2409
> > 3. Make sure your script doesn't have process start-up delays in
> the loop.
> >
> > What language are you planning to ue?
> >
> > Paul Alfille
> >
> > On Feb 19, 2008 2:12 AM, Chris Maresca
> >
> > Why is it that you think a PC couldn't handle this? I've
> built CNC
> > machines with tolerances in the thousandths of an inch using
> real-time
> > Linux, talking to a 1wire bus is trivial by comparison....
> >
> >
> >
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