RPI4 Raspbian 64 bit & LinuxCNC: Gmoccapy problem.

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23 Oct 2021 19:35 #224022 by Cncninja
is there a more current 64bit image than the link above or is this the go-to?

Thank so much

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24 Oct 2021 09:28 #224077 by elovalvo
You can find the latest versions of RaspBianOS 32 and 64 bit with the patch for PREEMP-RT or low-latency at this link

github.com/kdoren/linux/wiki.

The installation and building methods are also reported

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28 Oct 2021 20:01 - 02 Nov 2021 12:06 #224608 by elovalvo
Following what is reported in this link

github.com/kdoren/linux/wiki

I prepared an image of RaspiOS64 based on realtime Kernel 5.10.74-rt54 with version 2.8.2 of LinuxCNC.

The image can be downloaded from this link

linuxcnc-2.8.2-pi4-arm64.zip

LinuxCNC 64-bit deb packages (compiled for 64 bit OS) are also available:

for version 2.8.2

Linuxcnc_2.8.2_arm64deb.zip

and 2.9.0~pre0

Linuxcnc_2.9.0~pre0_arm64deb.zip
Last edit: 02 Nov 2021 12:06 by elovalvo.
The following user(s) said Thank You: andypugh, tommylight, TG_Imagineer

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13 Nov 2021 12:18 #226315 by virencq
Is RTAI kernel still not possible on RPI

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13 Nov 2021 20:18 - 13 Nov 2021 20:20 #226360 by Bari
There is no current port of RTAI to any ARM CPU. It would take lots of work to do so and not sure if it would provide a much lower latency than preemp_rt or Xenomai.

We ran Xenomai on some Allwinner ARM processors about 7 years ago. Latency was around 40,000nS.

Allwinner and Rockchip both make ARM SOC's with integrated microcontrollers. It has already been proven to work on the Allwinners to offload the real time tasks to the integrated micros. forum.linuxcnc.org/18-computer/39037-lin...-orange-pi-allwincnc

This is similar to using the PRU's in the Beagle Bone Black ARM SOC.
Last edit: 13 Nov 2021 20:20 by Bari.
The following user(s) said Thank You: virencq

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