Right, sorry for the vagueness. I'm basically trying to duplicate a range of RT tests across the same motor (basic, low cost stepper most likely) using PREEMPT_RT, Xenomai, PRU scenarios in order to better understand pros and cons of each. I didn't want to overcomplicate this thread, esp. since there's much related discussion around PRUs, so I was just focusing on the Xenomai part where there seemed to be less guidance.
Thanks much. Charles On Tuesday, June 23, 2015 at 10:09:11 AM UTC-4, Charles Steinkuehler wrote: > > On 6/23/2015 12:04 AM, chnyc wrote: > > > > 2) *klatency* - runs with following error: > > > > $ xeno klatency > > open(/proc/xenomai/registry/native/pipes/klat_pipe): No such file or > > directory > > modprobe klat_mod or try the -P option? > > > > Is the reason I can't run the above due to kernel config issues? If so, > > it's not clear to me where/how to change the config settings since I > didn't > > compile from source. > > Unknown, I'm not a Xenomai expert...I'd look into the docs at the > Xenomai site. If you need to build from source, just clone: > > https://github.com/RobertCNelson/bb-kernel/tree/3.8.13-xenomai > > ...and run "./build-deb.sh". You'll get a compiled kernel, *.deb > package, and a full source tree for experimenting. > > > 3) *Motor test* - My intention is to run some motor tests with Xenomai > and > > without and compare performance. Do you have any recommended > > Xenomai-specific tutorials using motors or for any actual use case of > the > > kernel in action on the BBB? Although I recognize that much of your > > wonderful MachineKit work is about driving motors, I've found very > little > > on the subject showing simple usage without capes or without MachineKit. > > "Motor test" is a bit vague. You can drive motors _many_ different > ways, from sending packets via Ethernet or CAN to controlling hardware > PWMs to interacting with the PRU to twiddling GPIO pins. > > What exactly are you trying to do? > > -- > Charles Steinkuehler > [email protected] <javascript:> > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
