Paolo Prete wrote: > Hi, > > is there any chance to make rtnet working on an AXIS > ETRAX 100 LX > (http://www.axis.com/products/dev_etrax_100lx/index.htm) > chip? > The problem wouldn't be embedding RTAI (I've found > several docs, howtos etc. about it), but it would be > the axis onchip network adapter: i don't know if it is > (or, at least, its standard is) supported by RTNET; it > seems it's not supported: so, in this case, doing some > "driver hacking" is there a chance to solve this > problem?.
This actually has two aspects (which are related, though): 1. Status of Linux support Is there a board support package? Does it work? Is it up-to-date (2.6.x, fresh 2.4.x, or even part of mainline)? Depending on that, you can evaluate how to get real-time on that platform. Take care not being fooled by oldish documentation. There used to be RTAI support for MIPS, but that is old and unmaintained now. If you just need to get things working once, you may go that path, but you will likely also have to pick an old RTnet version in that case, and you will have to do a lot of things on your own. For a future-proof solution, rather consider joining the community. There are two ongoing efforts to get Adeos/I-pipe and Xenomai running on MIPS [1,2]. 2. RTnet driver support Is there a GPL Linux driver available? If yes, I could estimate via a "short glance" the potential issues of making that driver RT-safe (no guarantees will be provided, of course :) ). Generally, that porting shouldn't be a big issue, just takes a bit debugging and thorough code review. The latter will also be granted once you submit your code for inclusion in RTnet. Looking forward to RTnet on MIPS / AXIS! Jan [1] https://mail.gna.org/public/xenomai-core/2007-03/msg00033.html [2] https://mail.gna.org/public/xenomai-help/2007-03/msg00180.html
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