Why don't you use something other than 1wire? You can directly wire a thermocouple to the ADC of an AVR chip, then run RS485 back to a controller.
If you really want to make your life easy, don't bother with any of that, just get a PLC and program that. They are around US$130 and are programmed using ladder logic on a PC, then run stand alone. Most of them have ADC inputs and it'll be way easier than using an AVR.... http://web5.automationdirect.com/adc/Shopping/Catalog/PLC_Hardware/DirectLogic_05/PLC_Units That way, all the control logic is on the PLC and you can send it commands via a serial connection. Some PLCs even have network connections as addons... Yes, I realize this is a 1wire list, but sometimes you just have to use the appropriate tool for the job.... Chris. Matthias Urlichs wrote: > Hi, > > Chris Maresca: > >>> (NB: Does anybody know of code for the slave side? >>> >> Do you mean on the micro or the PC? I'm assuming the PC. >> > > AVR. > > The problem: I'd like to remote-control my heating system with 1wire; > the issue I'm worried about is safety fall-back if the server crashes. > Thus, the controller needs to be *somewhat* more high-level than a > DS2405+relay for the furnace, and a DS2760 for the thermocouple. :-/ > > Besides: when the thing turns on, it creates an EM storm that tends to > disrupt the 1wire communication. Thus, my 1wire master system has to > suspend bus activity at that time. > > ------------------------------------------------------------------------- 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 [email protected] https://lists.sourceforge.net/lists/listinfo/owfs-developers
