/) i didn't tested this one, but they work like a multi drop network (rs485)? for example, using one serial allow 10+ ow bus?
2014-01-28 Paul Alfille <paul.alfi...@gmail.com>: > The emulated serial requires changing baud rates for each 1-wire > communication, and using a serial byte to send each 1-wire bit. Since most > computer UARTs have a pretty small buffer, the CPU does a lot of work > waiting for the serial data. > > A microprocessor is great for low-level bit-banging, but sending each serial > command over the network will be slow. That's why I thought a more efficient > serial protocol would be advantageous. You could design one, and we'll > support it, but the chips (Link and HA7E) are about $21. Seems like your > time is worth something, especially since the power and timing and pulse > contouring and echo suppression will be better. > > > On Tue, Jan 28, 2014 at 3:41 PM, Colin Reese <colin.re...@gmail.com> wrote: >> >> Sorry, reading your last sentence, you did address this. Why would you not >> recommend trying this? Error-prone? >> >> >> On Tue, Jan 28, 2014 at 12:12 PM, Paul Alfille <paul.alfi...@gmail.com> >> wrote: >>> >>> I take it your microprocessor doesn't run linux. In that case, you want >>> it to look like a serial bus master. >>> >>> There are 3 serial bus masters that I can remember off hand: the DS9097U, >>> the Link and the HA5. The later 2 use a much simplified serial data stream >>> (simple ascii), and I think are both available in chip format for fairly >>> cheap. The radio part would be transparent. >>> >>> http://www.ibuttonlink.com/products/linkoem >>> >>> http://www.embeddeddatasystems.com/HA7S--ASCII-TTL-1-Wire-Host-Adapter-SIP_p_23.html >>> >>> (I should add that the serial port can synthesize a bus master -- the >>> passive adapter) but I wouldn't recommend that remotely. Code for DS9097U >>> emulation is available -- Maxim never considered restricting masters, only >>> slaves). >>> >>> Paul Alfille >>> >>> >>> >>> On Mon, Jan 27, 2014 at 4:33 PM, Colin Reese <colin.re...@gmail.com> >>> wrote: >>>> >>>> It will look like: >>>> >>>> 1Wire network (DS18B20, DS2408, etc) -- uC (ATTiny, ATmega) GPIO, >>>> OneWire, DallasTemperature, SoftwareSerial libraries -- XBee/Zigbee send -- >>>> XBee/Zigbee receive -- RPi >>>> >>>> At the moment the serial output from the uC is just code I write that >>>> says 'hey, here the temperature is'. If I can process it into a owserver >>>> friendly format at either end, that would be great. Otherwise, I'll just >>>> have to process it into a database using pyserial. Not a big deal, but not >>>> as elegant as owfs and owserver. >>>> >>>> I'd happily put a DS2483 at the 1wire end if I thought it would get me >>>> anywhere, but I can't see that it will. >>>> >>>> >>>> On Mon, Jan 27, 2014 at 1:20 PM, Roberto Spadim <robe...@spadim.com.br> >>>> wrote: >>>>> >>>>> ? i don't understand.... >>>>> check: >>>>> >>>>> >>>>> ethernet (wifi ethernet, ethernet) >>>>> wireless (wifi ethernet, bluetooth, zb) >>>>> serial (rs232,rs485,rs422) >>>>> ow - serial-ow converters (ds2480b), microcontroler bus (on/off gpio), >>>>> i2c-ow converters (ds2482) >>>>> >>>>> what part you need? >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> CenturyLink Cloud: The Leader in Enterprise Cloud Services. >>>>> Learn Why More Businesses Are Choosing CenturyLink Cloud For >>>>> Critical Workloads, Development Environments & Everything In Between. >>>>> Get a Quote or Start a Free Trial Today. >>>>> >>>>> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk >>>>> _______________________________________________ >>>>> Owfs-developers mailing list >>>>> Owfs-developers@lists.sourceforge.net >>>>> https://lists.sourceforge.net/lists/listinfo/owfs-developers >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> CenturyLink Cloud: The Leader in Enterprise Cloud Services. >>>> Learn Why More Businesses Are Choosing CenturyLink Cloud For >>>> Critical Workloads, Development Environments & Everything In Between. >>>> Get a Quote or Start a Free Trial Today. >>>> >>>> http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk >>>> _______________________________________________ >>>> Owfs-developers mailing list >>>> Owfs-developers@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/owfs-developers >>>> >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> WatchGuard Dimension instantly turns raw network data into actionable >>> security intelligence. 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Skip the complicated setup - simply import >> a virtual appliance and go from zero to informed in seconds. >> >> http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk >> _______________________________________________ >> Owfs-developers mailing list >> Owfs-developers@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/owfs-developers >> > > > ------------------------------------------------------------------------------ > WatchGuard Dimension instantly turns raw network data into actionable > security intelligence. It gives you real-time visual feedback on key > security issues and trends. Skip the complicated setup - simply import > a virtual appliance and go from zero to informed in seconds. > http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk > _______________________________________________ > Owfs-developers mailing list > Owfs-developers@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/owfs-developers > -- Roberto Spadim SPAEmpresarial Eng. Automação e Controle ------------------------------------------------------------------------------ WatchGuard Dimension instantly turns raw network data into actionable security intelligence. It gives you real-time visual feedback on key security issues and trends. Skip the complicated setup - simply import a virtual appliance and go from zero to informed in seconds. http://pubads.g.doubleclick.net/gampad/clk?id=123612991&iu=/4140/ostg.clktrk _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
