And currently the temperature alarming is very, very broke. We have a situation where we have many temperature sensors sharing a onewire bus with many other sensors, for which we're already using alarming (total of ~40-70 sensors per bus; collection of 2406, 18B20, and 2450). We'd like to use alarming with all of them, unfortunately OWFS only properly alarms 2406's. We already have our scripts set up to do conversions on a regular interval and do alarm searches continuously
So for the moment, we're implementing alarms in software for our temperature and A/D readings. This is taking its toll on the bus, though, and currently we only have ~5 of these devices on our largest bus. This summer, if I get the time, I was going to do some bus-level analysis of what OWFS is sending out to the chips to figure out how its misconfiguring them. Don't know if I'll have time yet, though. --Jim. On Wed, Apr 23, 2008 at 3:50 AM, Paul Alfille <[EMAIL PROTECTED]> wrote: > For a couple of sensors, you may as well just monitor directly. You can do > more sophisticated temperature control that way as well (rate of change, > etc) > > You will have to do temperature measurements in any case. The alarms only > make sense if you have many non-parasitic sensors and do a simultaneous > conversion and then use alarm to find the sensors out of range. > > Paul Alfille > > > > On Wed, Apr 23, 2008 at 6:43 AM, Alessio Sangalli <[EMAIL PROTECTED]> > wrote: > > Hi, in my embedded application I want to monitor a couple of temperature > > sensors and, when the value goes below a certain amount, switch on some > > heaters using a pin of the DS2413. > > > > Now: what would you use? A simple script that polls the sensors with > > owread and turn on/off the heaters with a owwrite in case, or something > > more "advanced" using alarms and so on? > > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by the 2008 JavaOne(SM) Conference > Don't miss this year's exciting event. There's still time to save $100. > Use priority code J8TL2D2. > > http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers > > ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
