GoogleCodeExporter
commented
8 years ago Hi Franz,
it is very hard to obtain all these devices. 433 MHz, 868MHz, 2.4 GHz are just
mediums over which run transport, network and application protocols, many of
them proprietary. Some of the gateways carry about the transport and network
layers and expect just the application protocol from the software. But many of
them, not. For example I have played with EnOcean devices from Eltako
electronics with hard-wire RS-485 bus, not wireless (very nice devices and very
cost-effective). I used a regular USB <-> RS-485 dongle as a gateway to the
system and wrote a simple C++ "driver" that converted commands to binary,
packed them to the EnOcean protocol capsule and sent the serial data to the
USB. My point is that writing separate bindings for many different protocols
and DIY devices is definitely not cost-effective and probably even impossible.
Instead I suggest to focus on a single binding that would be something like a
protocol framework and could be used over the serial and tcp/udp bindings
(tcp/udp binding is not yet implemented). This protocol framework should define
a "protocol schema" via DSL syntax as everything in openHAB. The protocol
schema should describe device addresses, payloads, sumchecks and so on. The
binding must provide convert methods to binary, hex, decimal, ASCII and also
defining custom methods.
I think this is the right way and this would greatly expand openHAB to the DIY
market. I imagine users will create these protocol schemes and share them to
other users. Kai, Thomas, what do you think about this?
> openHAB (incl. Designer) should run eg on an Internet Access gateway (no-PC!)
openHAB runtime should run even now on devices with ARM architecture and little
RAM. Please check this thread -
http://groups.google.com/group/openhab/browse_thread/thread/6bff8cfc48f6c7dd
However most of the Internet Access gateways/routers on the market have
relatively low hardware, especially memory - 64MB - 128MB. I better bet on
plug-computers like SheevaPlug or projects like
BeagleBoard/PandaBoard/EagleBoard (the last one is a quad-core OMAP5 board, but
it's still in development) or even Raspberry Pi.
Regarding the openHAB Designer, there are plans openHAB to provide REST API to
the file system, so it would be possible to use the Designer remotely and will
open the front for web-based Designer.
Hope I helped.
Original comment by mishoboss on 23 Jan 2012 at 8:55
Original issue reported on code.google.com by
franz.kr...@gmail.comon 23 Jan 2012 at 7:38