LinuxCNC on Raspberry Pi 5
- Cant do this anymore bye all
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Unless you are going to use Ethernet or prepared to wait for the hm2_rspi driver to get rewritten I wouldn't grab one right away. And due to the need to really run a cooler, fitting to the 7c81 is going to need a bit of ingenuity.By the way, DigiKey has over 2500 pi5 4GB in stock. $60 plus shipping.
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- thadwald
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I added the network-manager-gnome package in order to get the GUI nm-applet.
I also added the raspberry pi repository
deb archive.raspberrypi.org/debian/ bookworm main
so I could get raspi-config
isolcpus 2.3
Max latency during a short test was about 15us
I hooked it up to a MESA 7i76s and just worked. So no network latency issues (yet).
I'll let it run for a while.
The 640x480 display limit is a bugger. Any idea how to fix that?
It does run pretty warm.
Processor utilization running gcode in Axis is around 15% for cores 1 and 2
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- elovalvo
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(www.raspberrypi.com/software/operating-s...spberry-pi-os-64-bit)
Release date: December 5th 2023
System: 64-bit
Kernel version: 6.1
Debian version: 12 (bookworm)
and the new Preempt_RT patch
mirrors.edge.kernel.org/pub/linux/kernel/projects/rt/6.1/
I prepared a new image for the Raspberry Pi5
Linux raspberrypi5 6.1.65-rt16-v8-16k-elv_rt+ #1 SMP PREEMPT_RT Thu Dec 7 13:43:31 CET 2023 aarch64
in which I installed a version of linuxcnc_2.10.0~pre0_arm64
forum.linuxcnc.org/9-installing-linuxcnc...xcnc?start=20#287208
This image can be downloaded from here
drive.google.com/file/d/16kKamxMKPdYAeJp...KLf/view?usp=sharing
At first glance everything seems to work regularly and the lowest value that did not show the "Unexpected realtime delay" message was
latency-test 12000
The values are much better than the version here:
forum.linuxcnc.org/9-installing-linuxcnc...-pi-5?start=0#285243
Attachments:
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- Cant do this anymore bye all
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If you are running Wayland just be wary that any apps that make calls to X lib functions will be a little, ahem, slow.
There is an option in raspi-config to change from Wayland to X.
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No solutions as of yet, I think its related to not being able to read EDID of the display. Raspberry Pi OS is fine. Which, IMHO, does feel a little snappier, but that's just a "seat of the pants" feeling.Well ...
I added the network-manager-gnome package in order to get the GUI nm-applet.
I also added the raspberry pi repository
deb archive.raspberrypi.org/debian/ bookworm main
so I could get raspi-config
isolcpus 2.3
Max latency during a short test was about 15us
I hooked it up to a MESA 7i76s and just worked. So no network latency issues (yet).
I'll let it run for a while.
The 640x480 display limit is a bugger. Any idea how to fix that?
It does run pretty warm.
Processor utilization running gcode in Axis is around 15% for cores 1 and 2
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- rodw
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video=HDMI-A-1:1920x1080M@60D
I also noticed that the RT patch 6.1,66 has been released and the 6.1.66 kernel was merged into the 6.1.y branch yesterday so it would be a good time to build another image.
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Just remember rod that the RPi5 is a different beast compared to the RPi4.
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- thadwald
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There was no cmdline.txt. Creating one with this line didn't change anything.rodw post=287637 userid=20660I did a bit of reading. can you guys try adding this at the beginning of cmdline.txt?
video=HDMI-A-1:1920x1080M@60D
I also noticed that the RT patch 6.1,66 has been released and the 6.1.66 kernel was merged into the 6.1.y branch yesterday so it would be a good time to build another image.
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- thadwald
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Trying your image now. ... what username and pw does it take?This image can be downloaded from here
drive.google.com/file/d/16kKamxMKPdYAeJp...KLf/view?usp=sharing
At first glance everything seems to work regularly and the lowest value that did not show the "Unexpected realtime delay" message was
latency-test 12000
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- rodw
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