Greg- I'm not completely clear on your placement of the reed switch. It seems as if you are using the reed switch to connect/disconnect the DS2423 from the 1-wire bus. Is that correct? Or is the 'no device' unintended?
The only usage I've seen to date is with the DS2423 left on the bus and the reed switch used to toggle the counter inputs. By the way, the counter inputs have about a 28M ohm internal pull-up, so there should be an external pull-up on them. Paul On Apr 27, 2011, at 11:40 PM, Gregg Levine wrote: > Hello! > Question time again: > Can anyone explain why the DS2423 counts when its input channels are > disconnected? Using a magnetic switch I've accomplished the usual > example application. Well its running on either a VM of Windows98SE > and the original manager program for DS devices. And as it happens I'd > start it going, and with the magnet in place. I'd move the magnet away > and it would complain no device. But when the magnet is returned to > the switch I would see an advance in the chosen counter. > > Of course the version Four drivers viewer doesn't indicate any change > between steps regarding the switch. > > Despite the fact that these "DS2423 4kbit 1-Wire RAM with Counter" > devices were discontinued by the firm and the datasheet even indicates > that it is not recommended for new designs, I am working towards > completing a design that was originally studied some time earlier. > (The reason why I bought the chip that is. Bought because at the time > the firm was DS not Maxim and samples were not part of the company's > method of doing things, then.) > ----- > Gregg C Levine [email protected] > "This signature fought the Time Wars, time and again." > > ------------------------------------------------------------------------------ > WhatsUp Gold - Download Free Network Management Software > The most intuitive, comprehensive, and cost-effective network > management toolset available today. Delivers lowest initial > acquisition cost and overall TCO of any competing solution. > http://p.sf.net/sfu/whatsupgold-sd > _______________________________________________ > Owfs-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/owfs-developers > ------------------------------------------------------------------------------ WhatsUp Gold - Download Free Network Management Software The most intuitive, comprehensive, and cost-effective network management toolset available today. Delivers lowest initial acquisition cost and overall TCO of any competing solution. http://p.sf.net/sfu/whatsupgold-sd _______________________________________________ Owfs-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
