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 > 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
