[Etherlab-users] Problem with running Etherlab and Ethercat Master

[Henrik Barie]

Dear Etherlab-Users and -Developers,

I tried installing and running Etherlab + Ethercat Master on
my Labtop using the latest Ubuntu version 22.04.1 LTS (Jammy Jellyfish, 
because it offers a Realtime-Kernel Beta which is easy to install. 
Before that, I tried it with Realtime-Kernel patches on OpenSUSE, Ubuntu 
18.04 and 20.04 but I couldnt get the Realtime-Kernels to work, so I 
decided to use this Realtime-Kernel Beta for 22.04 LTS.

I installed Etherlab + Ethercat Master using this Guide:

https://github.com/SchapplM/etherlab-examples/blob/master/SETUP_ETHERCAT.MD

I set up Matlab 2014b using this guide:

https://symbitron.eu/wiki/index.php?title=EtherLab_Installation#Installing_the_IgH_EtherCAT_master_1.5.2

In this guide it said: this version of etherlab contains a c-file 
(ec_slave3.c) that is not compatible with the newer MATALAB versions
That is why I used 2014b and not a newer Version. The "setup_etherlab" 
command worked fine and I had no errors which I had with newer 
Matlab-Versions.

The Problem is that after installing, I couldnt start Ethercat:

When I first typed in "sudo /etc/init.d/ethercat start", it said
the ec_master module wasnt found. When I used the "depmod"-command afer 
this and tried to start again, it said:

Starting EtherCAT master 1.6.0-rc1 modprobe: ERROR: could not insert 
'ec_master': Invalid argument
  failed

After this I used "sudo dmesg" and saw these Messages:

[   87.523095] ec_master: loading out-of-tree module taints kernel.
[   87.523232] ec_master: module verification failed: signature and/or 
required key missing - tainting kernel
[   87.524968] EtherCAT: Master driver 1.6.0-rc1 unknown
[   87.525000] EtherCAT ERROR: MAC address may not be empty.

......

  6007.467568] EtherCAT: Master driver 1.6.0-rc1 unknown
[ 6007.467607] EtherCAT ERROR: MAC address may not be empty.

......

[29706.025402] EtherCAT: Master driver 1.6.0-rc1 unknown
[29706.025429] EtherCAT ERROR: MAC address may not be empty.


(3 times this message)

and for these errors I couldnt find a solution so I wanted to ask you if 
you could maybe help me with this.

I have written my Ethernet MAC-Adress as MASTER0_DEVICE as well as the
"generic" Driver as DEVICE_MODULES in the sysconfig-File, which is also 
the only one that is enabled.


My Kernel is 5.15.0-1020-realtime

#########################################################################

A second Error which occurred is Matlab-related, but maybe you know the 
solution to this:

When typing:
>> etherlab_lib

I get the following messages and nothing happens afterwards:

MATLAB:dispatcher:loadLibrary Can't reload 
'/usr/local/MATLAB/R2014b/bin/glnxa64/libmwsl_graphical_classes.so'.
Caught MathWorks::System::FatalException

This also happens when trying to start Simulink


I really hope you can help me with these problems,
because I am unable to continue my Project without this software.



Greetings
Henrik