halcompile shared lib

i check module make inc again.
your llSymbols is not linked with your llxplc from halcompile.

linuxcnc.org/docs/html/hal/comp.html

if userspace = no , extra_link_args and extra_compile_args are bypassed. tells the docu.


I will think about this, by the way i think that this lib is perhaps not realtime suitable.

Good morning db1981
Yes - I've read that docu before and the link I put in goes in the same direction.
www.forum.linuxcnc.org/24-hal-components...-comp?start=10#52813
But: also in that link page 2 it looks like it's been done. I just do not understand this compiler things.

this would need an bigger build process....

Is this Logiclink free stuff? am i able to download this lib packet anywhere?

Hi db1981
You where right.
I just got the mail from LogicLab. That LLSym lib is not really suitable for real-time.
A plug-in is needed using shmem or semaphore to synchronize.
The LLSym can be used to obtain the addresses in the process space.
I can still use it for the Qt part though. In uspace it works great.

Thanks a lot and stay in touch ( if you like to)
Best Regards

P.S. That's what it is all about.

yes, thats what i mean. communcation in rt can't be done over such an event based communication layer. a kind of shmem like in lcnc ethercat is needed for this. Although the implementation in linuxcnc is very old style. (no safe memory ...)
for what do you need the soft plc?

Hi nice

I have a running Linuxcnc with the linuxcnc ethercat debianize ..........
If I use a new ethercat device I need to build a new driver. Every time.
Now for a simple I/O that would be ok but a drive is something different.
That soft-plc has CAN, Modbus, Serial, +++ Interfacees. If you like just have a look.
The Python HMI. Why not c/c++ ? Qt can do that.
Axis is a bit old fashion. Hal-ui... same thing. Why not Qt?

I have that plc in use with www.isg-stuttgart.de/de/isg-kernel/functions.html . But under win10.

Now the idea is to put it all into the plc.
PLC ethercat master to any ethercat device. (or modbus or CAN or....)
PLC to Qt hmi.
PLC to LinuxCNC.
At some point it becomes the new hal.
New times for for a more modern Linuxcnc.

The plc has already build in all the functions you need in Lcnc. (Modules)

Interesting.

but where is the need for linuxcnc, if you have an isg-kernel ?

ISG is Commercial

LinuxCNC is for everyone. It opens up possibilities.
I think of robotics. Fast motion control.
Fast sensors. All over standard interface. maybe ethercat.

Hi,

If you look at this project .

You see how qt is working with hal. And how to set the compile flags.
It's a ethercat app.

halio.h & halio.cpp is a interesting file to look at to see how hal pins and connentions are made.
motion.h & motion.cpp show a s-curve motion profile with a really nice performance.

Hallo Grotius

thank you for the sample. I will have a look.

At the moment I try to build something to get some values (int) array from a terminal to a pin.
And vice versa. Servothread shmem sem. Just to see how it works.
I have to get into my plc. Any Sample?