Alarming with the DS18B20 on Temphigh/low works fine with owfs - but I guess thats what Jim means - only after a conversion was once (manually) initiated. Also unfortunately regardless wether they're powered with Vdd or not. Thats IMHO a flaw with the chip, surely not owfs, but it would only make deeper sense if the DS18xx would do this by themselves and then alarm. So one has to initiate reading the temp anyway, which is the most time-consuming part and can use the measured temp directly, alarming is in this case, at least in this case for me quite useless ;) But now, its still a minor problem 'cause polling the temps is also fine within a few seconds..
Michael -----Original Message----- From: Paul Alfille [mailto:[email protected]] Sent: Sunday, April 26, 2009 3:48 AM To: [email protected] Subject: Re: [Owfs-developers] Notification or polling switch/presence I'm perplexed by the DS18B20 problems. Alarming should be automatic after each measurement if the temperature is out of bounds. On Fri, Apr 24, 2009 at 9:30 PM, Jim Kusznir <[email protected]> wrote: Now if only the DS2450's and 18B20's would alarm properly....We still have to poll those, as we can't make the alarming actually trigger using owfs. --Jim ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensign option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
