OW::get('/uncached');
On Feb 19, 2008 3:01 PM, Chris Maresca <[EMAIL PROTECTED]> wrote:
> 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....
> > >
> > >
> > >
> >
> ------------------------------------------------------------------------
> > >
> > >
> >
> -------------------------------------------------------------------------
> > > This SF.net email is sponsored by: Microsoft
> > > Defy all challenges. Microsoft(R) Visual Studio 2008.
> > > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> > >
> >
> ------------------------------------------------------------------------
> > >
> > > _______________________________________________
> > > Owfs-developers mailing list
> > > Owfs-developers@lists.sourceforge.net
> > <mailto:Owfs-developers@lists.sourceforge.net>
> > > https://lists.sourceforge.net/lists/listinfo/owfs-developers
> > >
> >
> >
> -------------------------------------------------------------------------
> > This SF.net email is sponsored by: Microsoft
> > Defy all challenges. Microsoft(R) Visual Studio 2008.
> > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> > _______________________________________________
> > Owfs-developers mailing list
> > Owfs-developers@lists.sourceforge.net
> > <mailto:Owfs-developers@lists.sourceforge.net>
> > https://lists.sourceforge.net/lists/listinfo/owfs-developers
> >
> >
> > ------------------------------------------------------------------------
> >
> >
> -------------------------------------------------------------------------
> > This SF.net email is sponsored by: Microsoft
> > Defy all challenges. Microsoft(R) Visual Studio 2008.
> > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Owfs-developers mailing list
> > Owfs-developers@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/owfs-developers
> >
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Microsoft
> Defy all challenges. Microsoft(R) Visual Studio 2008.
> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
> _______________________________________________
> Owfs-developers mailing list
> Owfs-developers@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/owfs-developers
>
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Owfs-developers mailing list
Owfs-developers@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/owfs-developers
