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6.1.69 Fully preempt kernel
SPI enabled by default
Linuxcnc 2.9 built from git repo today just uspace & dev packages no docs
Mesaflash built from source today, version 3.5.10
Instead of xfce I built the image with Mate, std debian config looks different to std Mint install.





Tested mesaflash to just get the pins from my 7c81 clone tested ok
Test loading the hm2_spix driver for the rpi via a halrun session ok
Quick latency test ok

drive.google.com/file/d/1MEgxQ1IrdI2hnnw...ilQ/view?usp=sharing

hello,I can install on both raspberry pi5 4gb and 8gb but the new 16gb I bought gives an error. What is the reason for this?

Ok it was a typo I made, but if you tried to edit the file it should not of existed.

as superuser edit /boot/broadcom/config.txt & change the line from

#dtparam=i2c_arm=on
to
dtparam=i2c_arm=on

Then reboot.

I’m using a raspberry pi 5 8gb with the latest 2.93 image that’s linked on the first page of this thread. I’ve attached a screen shot of what I’m getting when run the commands. 

Wow, thank you @cornholio! That will make it much easier for us
@PCW thank you as well for the info.

Did you run the commands I suggested and post the output ?

What RPi are you using ?
What Linuxcnc img are you using ?

It’s only showing 11 & 12, I can’t get 1 to show.

I’m pretty sure I’m using the latest kernel though.
6.6.44-rt39

Too hard to edit

[ls -la /dev/i2c*[/code]

Would be good to see permissions, not that should affect sudo.

I'm working on a Rpi5 with an image I built myself from rodw's image builder

This is my kernel.
Linux raspberrypi 6.1.69-rt21 #1 SMP PREEMPT_RT Fri Jan 17 10:39:48 AEDT 2025 aarch64 GNU/Linux

Before I finalised my post I checked running by running
As I have nothing connected I got this:
sudo i2cdetect -y 1
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --


What doesshow ?

/dev/i2c-1 /dev/i2c-11 /dev/i2c-12

I was able to enable i2c, but the instructions say use “sudo i2cdetect -y 1”, 1 doesn’t seem to exist for me, I can only detect 11 and 12 and neither show the 0x36 address.
I have confirmed that the pins are making good contact, so bad connection is ruled out.
Could it be the kernel configuration?

To turn on i2c

edit as superuser /boot/broadcom/config.txt and uncomment the lines relate to i2c.

then edit as superuser /etc/modules and either add i2c-dev or uncomment if it is commented out

reboot

That will get i2c up and enabled

Hey guys, I’ve add a Geekworm x1201 UPS to my Pi5 as I often get power outages at my place and wanted a bit of extra security.
I was able to access and change the EEPROM to get it to charge and power the pi5 from the batteries. But to change anymore detailed settings, like battery monitoring, It’s telling me I need to open Raspi-config. Which I obviously can’t using the Linuxcnc image. 

Here a link to the detailed instructions, suptronics.com/Raspberrypi/Power_mgmt/x120x-v1.0_software.html
unfortunately it’s all for the Raspberry Pi OS. 

Is there anyway I can make this work or am I wasting my time? 

 

The biggest issue is that Linuxcnc will require building from source as the RPi5 images don’t have Linuxcnc packages built from the most recent code base. Editing config.txt to turn on spi is a trivial matter.

Give me a day or 2 and I’ll generate an image with the most recent Linuxcnc & Mesaflash.

The 7C80 will work with the RPI5 using the hm2_spix driver.

Note that some 7C80s were shipped with firmware that does
not work with the RPI5. These cards can be re-programmed
on a RPI4 if that's convenient. All the distributed bitfiles are OK.
 

Hi all, 
after swapping our Raspberry Pi4 with a 5 things didn't work anymore as they did before, and thanks to this forum, as far as I understood there is no SPI support yet, right? 
I have also read that "rodw" you have created an image builder, and "Cornholio" you managed to patch it so it works right?
As we are trying to run the mesa 7c80 with a Raspberry Pi5, is there an image available currently that supports this combination? If not what would be the steps to "patch" it together? 

Thanks a lot in advance