Am 19.04.2013 um 11:30 schrieb Andrew <parallel.kinemat...@gmail.com>:

> 2013/4/19 Michael Haberler
> <mai...@mah.priv.at<https://mail.google.com/mail/u/0/?view=cm&fs=1&tf=1&to=mai...@mah.priv.at>
>> 
> 
>> Andrew,
>> 
>>> I recently run into http://www.youtube.com/watch?v=YSnNtgZrfyU
>>> LCNC 2.5 is ported to ARM with Xenomai
>> 
>> The capability to run on ARM boards has been in a linuxcnc.orgdevelopment 
>> branch since late last year, among them Raspberry Pi and the
>> Beaglebone, both in a v2.5_branch based and master-based branch
>> 
>> please see the emc-developers archive for details
>> 
>> the link you give above was a one-off effort which never made it back into
>> linuxcnc and is not a recommended base to start on
>> 
>> 
> Thanks for pointing that out, Michael!
> 
> 2013/4/19 Michael Haberler <mai...@mah.priv.at>
> 
>> again: this is _stock_, done, ready to go, not blue skye - build from
>> here:
>> http://git.mah.priv.at/gitweb?p=emc2-dev.git;a=shortlog;h=refs/heads/arm335x-hal-pru-module
>> 
>> no reason to reinvent the wheel in square form ;)
>> 
> 
> Great! Where should I start to get LCNC working on ARM device?

The information on ARM ports is atm bit littered over the emc-developers 
mailing list, which I suggest to read back to last fall, and several Wiki 
entries:

http://wiki.linuxcnc.org/cgi-bin/wiki.pl?BeagleboneDevsetup
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?NewRTInstall
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?RaspbianXenomaiBuild

> What is recommended board to play with?

my personal recommendation would be the new 'black' Beaglebone board about to 
come out - umph and I/O capabilities leave the Raspberry in the dust (which I 
think is a totally overhyped platform; it does have a decent package stream but 
thats about all of the upside I could think of relative to the BB for LinuxCNC 
purposes)

the advantage of the black BB over the current one is - it has on-board HDMI 
and more memory

I had no chance to build on the black BB since it isnt out yet but I dont 
expect any surprises except maybe for OpenGL support being a bit bumpy to start 
with

the concept of glueing an Arduino to an ARM core is basically shmoozing up to 
the popularity of the Arduino and trying to get some marketing uplift from 
there; in terms of architectural wisdom and usefulneess I think it's obtuse BS 
that wont get any traction.

--

As for other boards - the tough part is finding a realtime kernel that works 
and for the ARM boards Xenomai is the only realistic option atm - so before you 
jump make sure that the board, or at least the processor chip, are supported by 
Xenomai - see www.xenomai.org 

you miss out on this step - you have a board which will run the 'simulator 
mode' only (non-realtime threads) which isnt useful for real work; or face 
nontrivial kernel work to get the board supported and debugged with Xenomai. 

So the 'great deal' on the board of the week might serve well to enrich your 
assortment of doorstops ;)

- Michael

> Any FAQ or Wiki available?
> 
> Andrew
> ------------------------------------------------------------------------------
> Precog is a next-generation analytics platform capable of advanced
> analytics on semi-structured data. The platform includes APIs for building
> apps and a phenomenal toolset for data science. Developers can use
> our toolset for easy data analysis & visualization. Get a free account!
> http://www2.precog.com/precogplatform/slashdotnewsletter
> _______________________________________________
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users


------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data. The platform includes APIs for building
apps and a phenomenal toolset for data science. Developers can use
our toolset for easy data analysis & visualization. Get a free account!
http://www2.precog.com/precogplatform/slashdotnewsletter
_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users

Reply via email to