Ds18S20 is connected between pin 1 and pin 3. I have moved it to the main port.
Since I´m using DS18S20-PAR I don´t think it so good ide to supply pover to pin 3 since its internally connected to pin 1. I´m using the 6-channel master hub from hobby-boards (http://www.hobby-boards.com/catalog/product_info.php?cPath=23&products_id=33), and as I worte ealrier it work just fine with other software like igitemp so i doubt that there is an hardwareproblem. /Thomas Mark Richards skrev: > Thomas Berg wrote: >> die: C2 >> >> I belive too that owfs is doing this properly, but somthing goes wrong >> when there is an hub connected between master and slave. > > Two things come to mind - and they are related. Forgive me as I don't > know how experienced you are with the hardware, so perhaps you've > already done these things: > > Lead 3 (Vdd) of the DS18x20 should be GROUNDED (connected to lead 1 - > GND) when it is expected to operate parasitically. Is it? If not, > ground it and try again. > > Second, the MAIN and AUX ports of a DS2409 switch (the hub) operate > with a slight difference (mostly to the software). Try the existing > configuration using both ports before doing other tinkering. It could > be simply that OWFS isn't handling the AUX port properly (I doubt it > as they're very thorough with their software). > > If these test fails and Lead 3 is grounded, lift if from ground and > try applying power to lead 3 instead. This takes it from parasitic to > direct powered mode and therefore the state of the buss will NOT > bother the chip's operation. > > To do this wire +5vdc to the power pin (lead 3) of the DS18x20 device > via your existing source of +5vdc through a 100kohm 1/4 watt resistor. > The +5vdc MUST have the DS18x20 GND as a common ground connection. As > long as you ONLY wire to the DS18x20 lead 3, you need not worry about > breaking your hub. > > If OWFS works after change, then at least you can feed back to OWFS > that the issue has to do with how it handles a DS2409 switch when > operating in parasitic mode. > > If it does not, some study of your hub is in order. > > > /m > > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
