Controller build for Plasma

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3 years 5 months ago #271473 by xnaron
Replied by xnaron on topic Controller build for Plasma
Well I didn't end up putting the controller into service and now I get to read through my thread again to remember everything I have done. I ended up blowing away the tiny pc that I had linuxCNC setup on so now I need to start that all over again.  Does the latest ISO from the website support the mesa 7i96 or do I still need to do something special with the kernel selection?  I realize the 7i96 was replaced with 7196s because of availability issue for the FPGA. Hopefully should be able to follow the same process to get it setup again.

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3 years 5 months ago #271477 by tommylight

  Does the latest ISO from the website support the mesa 7i96 or do I still need to do something special with the kernel selection? 
It should, both.
Although you might want to go with Debian BookWorm as LinuxCNC is in their repositories from now on.
cdimage.debian.org/cdimage/bookworm_di_r...-rc2-amd64-DVD-1.iso
Install, reboot, update and upgrade, then
sudo apt install linuxcnc-uspace

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3 years 5 months ago #271491 by xnaron
Replied by xnaron on topic Controller build for Plasma
Thanks. Just reinstalled and updated.

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3 years 5 months ago #271627 by xnaron
Replied by xnaron on topic Controller build for Plasma
I've installed Debian Bookworm using Rod's instruction document and I am trying the 6.3.0 kernel he posted in the document.  So far for the last few hours running the script to test latency looks like below.  I'll let it run overnight to see if it gets worse.  If it stays as below is this ok?

 

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3 years 5 months ago #271628 by PCW
Replied by PCW on topic Controller build for Plasma
Note that for hardware step/dir systems (like Mesa)
no base thread is needed so you will get better data
by testing the servo thread latency only, like

latency-test 1ms 1ms
or
latency-histogram --nobase --sbinsize 500
The following user(s) said Thank You: rodw

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3 years 5 months ago #271630 by rodw
Replied by rodw on topic Controller build for Plasma
The latency you show is fine for a Mesa card. As PCW said, its probably a bit overstated with the base thread in there.

Thanks for using my kernel.

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