LinuxCNC on Raspberry Pi 4

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26 Feb 2022 11:19 #235841 by knipknap
Using the following download: I flashed an SD card and put it into my Raspberry Pi 4. It doesn't boot, instead showing the following error: "This board requires newer software". (Screenshot attached)

Any workaround for that one, apart from setting up Raspbian/Debian from scratch?
 
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26 Feb 2022 12:27 #235844 by tommylight
I was sure there is no RPI 4 with 1GB of ram, i was wrong :(
First result sheds some light
www.google.com/search?q=rpi4+versions&so...oAEB&sclient=gws-wiz

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26 Feb 2022 20:40 #235871 by knipknap
Replied by knipknap on topic LinuxCNC on Raspberry Pi 4
Yeah, and it's the only model available for sale anywhere at the moment :-/

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28 Feb 2022 07:59 - 28 Feb 2022 08:08 #235994 by elovalvo
Last edit: 28 Feb 2022 08:08 by elovalvo.

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15 Mar 2022 00:13 - 15 Mar 2022 00:14 #237269 by andypugh
Replied by andypugh on topic LinuxCNC on Raspberry Pi 4
It's a bit late here now, but I would suggest starting with a standard 64-bit Raspbian install then searching for a packaged RT kernel.
sudo apt-cache search linux-image*

I think it will probably be this one: packages.debian.org/buster/linux-image-rt-arm64

If you find one then the next step is to install is (sudo apt-get installl linux-image....... ) then compile LinuxCNC from source. (As the buildbot is only making 32-bit arm-hf images)
Last edit: 15 Mar 2022 00:14 by andypugh.

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15 Mar 2022 08:02 - 15 Mar 2022 08:03 #237299 by elovalvo
Last edit: 15 Mar 2022 08:03 by elovalvo.

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17 Mar 2022 22:25 #237576 by Elco
Replied by Elco on topic LinuxCNC on Raspberry Pi 4
Is there any documentation about configuring the GPIO's? My X86 system died, and I am trying to switch to my RPi4B (8GB).
I managed on the RPi to install LinuxCNC 2.8.2 on an SSD. However the documentation in that kit is not related to GPIO's it seems. Also the latest version of the LinuxCNC_documentation.pdf does not mention them.

I installed the utility rpi-gpio, but have no idea what the generated output means. Are there any GPIO configuration examples?

Thanks,
Robert
 

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18 Mar 2022 07:34 #237620 by elovalvo
Replied by elovalvo on topic LinuxCNC on Raspberry Pi 4
in this link you can find an example of configuration:

forum.linuxcnc.org/9-installing-linuxcnc...-io-pins-only#203365
The following user(s) said Thank You: Elco

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22 Mar 2022 23:24 #238049 by andypugh
Replied by andypugh on topic LinuxCNC on Raspberry Pi 4
LinuxCNC has a driver for the Pi GPIO, but it is barely documented (and as it only builds at all when the target is the Pi it doesn't show up in the lists)

There is an example HAL file, and that's your lot. Sadly.

github.com/LinuxCNC/linuxcnc/blob/master...hal_pi_gpio_demo.hal

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