RPI4 Raspbian 64 bit & LinuxCNC

PCW wrote:

As a first step, can you try with rx-usecs set to 0?

this might've done the trick--i've run the gcode through 3 times in a row without the "error finishing read" popping up again, although i did have a couple of following errors show up...   

i'll run it a few more times, but this seems to have been a big improvement, thank you!

You might check this for following errors:

PCW wrote:

You might check this for following errors:

interesting--so, for reasons i don't understand, my rpi 4 doesn't seem to find my mesa board when wifi is on, so i have to disable it when
running linuxcnc, so any of the following errors have been happening when disconnected from the internet...

that being said, i did the ntp install and verified its running and will run my gcode again (without internet)...

can anyone tell me how to set the rpi 4 to allow both wifi and ethernet simultaneously?

thanks!

beaker152 wrote:

...

can anyone tell me how to set the rpi 4 to allow both wifi and ethernet simultaneously?

thanks!

www.raspberrypi.com/documentation/comput...nfiguring-networking

forums.raspberrypi.com/viewtopic.php?t=329164

PCW wrote:

As a first step, can you try with rx-usecs set to 0?
this might've done the trick--i've run the gcode through 3 times in a row without the "error finishing read" popping up again, although i did have a couple of following errors show up...   

i'll run it a few more times, but this seems to have been a big improvement, thank you!

well, i ran it one more time and got the "error finishing read" problem again, so it seems that there is still an issue.

is it correct that this indicates a 5.x kernel?
linuxcnc@raspberrypi:~ $ uname -a
Linux raspberrypi 5.15.65-rt49-v8+ #1 SMP PREEMPT_RT Tue Sep 6 18:12:35 BST 2022 aarch64 GNU/Linux

i inferred there may be some concern about 5.x on another thread:
forum.linuxcnc.org/27-driver-boards/4691...error-finishing-read

do we know if anyone has tried a 6.x kernel build on a raspberry pi?
 

beaker152 wrote:

.....

do we know if anyone has tried a 6.x kernel build on a raspberry pi?

I'm currently experimenting on a Raspberry Pi 400 with a version of linux 6.0.15-rt14-v8+ compiled by me.
The Debian release is this

was obtained by upgrading the RaspiOS bullseye to bookworm

The LinuxCNC version is 2.10.0pre, also compiled by me.

In this configuration, contrary to the one present on Debian ( raspi.debian.net/daily-images/ ), the hal_pi_gio module works properly.
I don't have Mesa cards so I can't tell you if it works with this one.

The results look interesting

 

elovalvo wrote:

beaker152 wrote:

...

can anyone tell me how to set the rpi 4 to allow both wifi and ethernet simultaneously?

thanks!

www.raspberrypi.com/documentation/comput...nfiguring-networking

forums.raspberrypi.com/viewtopic.php?t=329164

i see that my wifi router Default Gateway is 10.0.0.1 and my Mesa 7i96s is set up with IP address of 10.10.10.10...   is that a conflict that must be resolved to have wifi on while being actively connected to the Mesa card?

is there a way to replace the 5.x kernel i have currently with that 6.0.15 kernel? or would i have to recompile/rebuild the whole thing from scratch?

i found some build instructions here:
forum.linuxcnc.org/9-installing-linuxcnc...mpt-rt-kernel#259347
and tried it the other day, but it seems that script didn't run to completion for me as written and i didn't have enough time to sort out all the edits required to get the last 2% working...

cheers!

beaker152 wrote:

elovalvo wrote:

beaker152 wrote:

...

can anyone tell me how to set the rpi 4 to allow both wifi and ethernet simultaneously?

thanks!

www.raspberrypi.com/documentation/comput...nfiguring-networking

forums.raspberrypi.com/viewtopic.php?t=329164

i see that my wifi router Default Gateway is 10.0.0.1 and my Mesa 7i96s is set up with IP address of 10.10.10.10...   is that a conflict that must be resolved to have wifi on while being actively connected to the Mesa card?
 


It could be a conflict if you did not configure the host netmask to a /24 mask (so LinuxCNC ends up routing packets out the wifi interface)
 

The default subnet for 10.n.n.n is /8, so PCW's advice to set it to /24 is very good.
There might be an issue if you are using WiCD to configure and connect to networks as it does not allow 2 connections at the same time, so removing WiCD and installing network-manager should fix that.