Linuxcnc-ethercat: undefined symbol: ecrt_slave_config_sdo

Stormhold,

I hope your installation mint will be okey for ethercat !

I had no luck today with ec-debianize.

Ethercat 1.5 stable run's ok and is advised to run on production machines.

ec-debianize has corrupt code for the kernel > 5.0.0

I have to think what to do. Maybe start from a clean qt program to make a shared library.

Hi,

I've got an new project together with Sascha for the same customer. I think that ec-debianize will get migrated this or next week.....

Hi db1981,

Nice work !

What do you mean with migrating? You mean compatible for newer kernels or something else ?
If you can get it compatible, it would save me lot's of work. You can download the rt iso already for debian 11.
It's on a temp folder on sourceforge. No one know's it's there, but it's downloaded several times. I'm surprised.

And you can put linuxcnc on it as .deb package. Qt is ready, Ethercat-hg stable is ready.
Let me know if you are interested?


I just got linuxcnc-ethercat compiled. Wtf. There where a lot of typo's around in the source code.
Here is my log : github.com/grotius-cnc/debian_distro_liv.../fix-ec-debianize.md

I had a go at ec-debianize a few days ago. For Rpi4 though.
Why this complex setup to compile? It didn't work for me.
This one did work github.com/icshwi/etherlabmaster, there were just the normal "make"s I am familiar with.
And it works, have it running with two beckhoffs right now (on Rpi4).
I would appreciate if we can go away from the build method in ec-debianize.

I mean, to get the source from git for the etherlabmaster, instead of using mercury..
ec-debianize is only an workaround for installing the ec master.

compiling linuxcnc-ethercat should not be kernel related, if the ecmaster is proper installed...

Hey Grotius

So far no luck with this new kernel 4.19.1-rt3 on mint 19.3

I have went and gotten this error nowWhich i have read somewhere is a kernel related error. Previously on the other none rt kernel, the version differing specified in the error message was inverted with /dev/EtherCAT0: 30, libethercat: 36 . So i have little to no clue what is going on.

User bkt seems to have had success with the same distro and kernel here. However i followed the instructions with no luck. Will keep trying though ! Good day to all

EDIT:
Also like bkt i have a weird output from update-ethercat-config, where the kernel is wrongAlthough i followed his step to fix this, and no luck

Hi,

I was very lucky this morning..

Got the ethercat working without ec-debianize on linuxcnc for kernels > 5.0.0

I modified the linuxcnc-ethercat source code a little bit, removed unused code, did a clean up, fixed typo's, added linkers, removed
already done patches, etc.

Also thanks to your post the link problem was solved in no time. I am not so good in editing Makefile's.
Take a look : github.com/grotius-cnc/linuxcnc-ethercat

For your error. It looks like libethercat is not compatible at the moment.
Maybe do this :

[Edit]
This must work for all systems, installs etherlab source code :
github.com/grotius-cnc/debian_distro_liv.../ethercat-master.deb
$ sudo dpkg -i ethercat-master.deb

Then this one :
Maybe then you are lucky.. It worked for me.

Also like bkt i have a weird output from update-ethercat-config, where the kernel is wrong
update-ethercat-config is a linuxcnc command.
Before linuxcnc was connected with ethercat it was already messed up i think.

What i learned is that you have to check out stable 1.5. at git. In later version's, for me it was messed up.
This 1.5 stable version is the only version that is suitable for production machines.

I have to look now. There are several patches around. Wich patch can be used safely?

@Hakan,

I would appreciate if we can go away from the build method in ec-debianize.
It's indeed a abracadabra install procedure. It could be set up very clear, step by step.
We have too look at the patches it does. And see if they brake something or not.

Hey Grotius

I feel very honored by my topic making it into your README.md, glad to have helped somehow.

Unfortunately i am on a bad luck streak. So no success so far, still problems with the versions of /dev/ethercat and libethercat.
When i eventually make it i will be sure to make a post about it here.
Good day to all!

Hi Stormhold,

Do you have a download link for me to your linux mint iso? Or the one you are trying to get fixed?
I will install it and try it for you.

Wow that would be very helpful, thank you !
I used this one here