Hi, > Sorry I dont intend to be a wet blanket here. I would like to add rather > than building the ZigBee stack on Linux user space it would be better to > use a modem based approach. > In todays market there are a lot of certified modules avaliable in the > market and they are cheap too. So if i see from a user point of view i > dont see a need for a userspace stack.
>From a commercial view I think you are right, using a Chip with a full included stack will get you much faster and much cheaper to a working system. But at the moment the development isn't driven by any commercial backgrounds, as far as I know. The big, not so nice point, of Systems with integrated stack is, that every Vendor has its own proprietary API. Since there is no commercial background, developing all this as an own open source stack is a valid goal, even if it is only for the fun of doing it. Sascha. > > From my experience module as a modem is a better method for the > following reasons > 1. The cost and time for certifing the ZigBee stack is huge comapred to > the module cost > 2. ZigBee stack itself is not enough you need a lot of profiles to do > any thing useful. Even the profiles need to be certified > 3. You will need encryption libraries like the one from Certicom- even > on module you have to pay extra > 4. Even the mac is not certified in Linux > > A third party module has all these things inbuild all you need is an > interface driver which can be USB,SPI or even UART > > Just to add but in case of 6Lowpan a good TCP-UDP-IP infrastructure > exsists in Linux. > > > On Tue, Sep 24, 2013 at 10:01 AM, Alexander Aring <alex.ar...@gmail.com > <mailto:alex.ar...@gmail.com>> wrote: > > Hi Sascha, > > On Mon, Sep 23, 2013 at 08:41:20PM +0200, Sascha Herrmann wrote: > > Hi, > > > > > Could it be related somehow to ZigBee lincense ? > (http://www.zigbee.org/) > > > Moreover, I saw in a lecture: > > > > > http://elinux.org/images/7/71/Wireless_Networking_with_IEEE_802.15.4_and_6LoWPAN.pdf > > > from 2012, by Alan Ott: > > > > Maybe you can get some more information about this issue from this > > article: > > > > http://www.freaklabs.org/index.php/Blog/Zigbee/Zigbee-Linux-and-the-GPL.html > > The author had started developing an OpenSource ZigBee Stack and was > > Member of the ZA. If you dig somewhat deeper in his blog (I don't have > > the exact url at hand), you will find an article where he > describes that > > he tried to start an discussion about removing the problematic > part from > > the ZigBee License, but failed with this approach. After this he > stopped > > the development of the stack and quit his ZA membership. > > > > If the information of this article holds, the ZigBee License is > > incompatible with the Linux Kernel. > > > > and here comes the point to switch into a userspace application (if > possible) to avoid license issues. I am not a big fan of that but we can > see this in several other projects at the linux kernel like usbdevfs > which allow to write userspace usb drivers which are not under GPL. > > My basic message is to say "it is possible", but we can't do anything > with that. Maybe it helps us to make a better userspace api. :-) > > - Alex > > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the > most from > the latest Intel processors and coprocessors. See abstracts and > register > > > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk > _______________________________________________ > Linux-zigbee-devel mailing list > Linux-zigbee-devel@lists.sourceforge.net > <mailto:Linux-zigbee-devel@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/linux-zigbee-devel > > > > > -- > Regards, > > Prajosh Premdas > > > ------------------------------------------------------------------------------ > October Webinars: Code for Performance > Free Intel webinars can help you accelerate application performance. > Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from > the latest Intel processors and coprocessors. See abstracts and register > > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk > > > > _______________________________________________ > Linux-zigbee-devel mailing list > Linux-zigbee-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linux-zigbee-devel > -- Hi! I'm a .signature virus! Copy me into your ~/.signature to help me spread! ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60133471&iu=/4140/ostg.clktrk _______________________________________________ Linux-zigbee-devel mailing list Linux-zigbee-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-zigbee-devel
