EMC2 running on Raspberry Pi?

As I said, look in the make file:

setuid:
chown root ../bin/linuxcnc_module_helper
chmod 4750 ../bin/linuxcnc_module_helper
chown root ../bin/pci_write
chmod 4750 ../bin/pci_write
chown root ../bin/pci_read
chmod 4750 ../bin/pci_read

cmorley wrote:

As I said, look in the make file:

setuid:
chown root ../bin/linuxcnc_module_helper
chmod 4750 ../bin/linuxcnc_module_helper
chown root ../bin/pci_write
chmod 4750 ../bin/pci_write
chown root ../bin/pci_read
chmod 4750 ../bin/pci_read

Thanks for the reply, I will get round to looking at all that stuff eventually, but am putting off any further work until I have worked out what to do about real time kernel support.

I pretty much finished up with hardware and driver hacking and put a youtube video of the RPI running a stepper system without realtime kernel support.



I get the feeling realtime kernel hacking could be a little bit too taxing for me, but will give it a try when I get the free time.

mungkie wrote:

I get the feeling realtime kernel hacking could be a little bit too taxing for me, but will give it a try when I get the free time.

I hope to have a fiddle when my Pi arrives. Should be less than 8 weeks now <grrr>

powet.eu/2012/07/25/raspberry-pi-xenomai/

Seems to indicate that Xenomai works. I am unclear what the relationship of rtai and xenomai is.

Andy Pugh wrote:

powet.eu/2012/07/25/raspberry-pi-xenomai/

Seems to indicate that Xenomai works. I am unclear what the relationship of rtai and xenomai is.

Well its interesting enough for me to order one through Farnells. I can spend my time trying to build real time kernels for something else, now the NCBOX is sorted!

I think RTAI and xenomai merged and then split again at some point in the past and the two systems have slightly different goals, RTAI attempts to have the best latency, xenomai attempts to be extensible and have wide compatability. xenomai used to have a RTAI compatability skin but apparently this is buggy and deprecated speedwise RTAI is best followed by xenomai followed by RT_PREEMPT.

I have not been able to get xenomai to boot on my pi, but I think this maybe due to my own stupidity and problems with my cross compile environment.

I just the other day managed to get RT_PREEMPT with the newest kernel to compile and boot on my pi, so I hope to compile the RT_PREEMPT version of linuxcnc this weekend.

Please note I am very much a newbie with RT systems and know nothing about the lower level kernel stuff, I am just hacking things together and seeing what happens.