QTPlasmaC can't find Python3-serial
01 Nov 2023 19:01 #284277
by donell
QTPlasmaC can't find Python3-serial was created by donell
Hi,
I have been trying to get my QTPlasmaC to talk to my Hytertherm 45 using the RS485 interface.
I am running QTPlasmaC with Buster.
I can get the interface to work with the test program which indicates the RS485 is working OK but when I generate a simple config including the Powermax port using the PNCconf Wizard and try and run it get the following error message:-
--- QtVCP Screen Started on: Tue, Oct 31 2023 19:49:19 ---
--- my_LinuxCNC_machine - QtPlasmaC v1.236.290, powered by QtVCP on LinuxCNC v2.10.0-pre0-2069-g9de3c86d4 ---
Tue31 19:49: Module Error:
python3-serial cannot be found
Install python3-serial or linuxcnc-dev
Tue31 19:49: Tool 0: torch
I have tried installing python3-serial but it tells me it is already installed.
I can run a configuration without a Powermax port defined just fine, but with the Powermax port set it will not work.
If anyone had any idea what is causing this fault I would be very grateful for some advice.
Many thanks
I have been trying to get my QTPlasmaC to talk to my Hytertherm 45 using the RS485 interface.
I am running QTPlasmaC with Buster.
I can get the interface to work with the test program which indicates the RS485 is working OK but when I generate a simple config including the Powermax port using the PNCconf Wizard and try and run it get the following error message:-
--- QtVCP Screen Started on: Tue, Oct 31 2023 19:49:19 ---
--- my_LinuxCNC_machine - QtPlasmaC v1.236.290, powered by QtVCP on LinuxCNC v2.10.0-pre0-2069-g9de3c86d4 ---
Tue31 19:49: Module Error:
python3-serial cannot be found
Install python3-serial or linuxcnc-dev
Tue31 19:49: Tool 0: torch
I have tried installing python3-serial but it tells me it is already installed.
I can run a configuration without a Powermax port defined just fine, but with the Powermax port set it will not work.
If anyone had any idea what is causing this fault I would be very grateful for some advice.
Many thanks
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01 Nov 2023 21:00 #284282
by bkt
Replied by bkt on topic QTPlasmaC can't find Python3-serial
maybe you have 3.4 and need 3.6 ....or 3.8 .... verify these first. .... $ python3 -version
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01 Nov 2023 22:41 #284292
by phillc54
Replied by phillc54 on topic QTPlasmaC can't find Python3-serial
Can you try starting linuxcnc from a terminal to see if there are any other error messages or warnings.
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02 Nov 2023 17:41 #284351
by donell
Replied by donell on topic QTPlasmaC can't find Python3-serial
Thanks for the replies.
phillc54. Did as suggested. Everything looks ok except for the last few lines:-
hm2/hm2_7i96s.0: registered
Found file(lib): /usr/share/linuxcnc/hallib/qtplasmac_comp.hal
Found file(REL): ./custom.hal
Starting DISPLAY program: qtvcp
USRMOT: ERROR: command 30 timeout
emcMotionInit: emcTrajInit failed
Looks like the problem is in qtvcp - which is not really a surprise.
bkt. Python version is 3.7.3. I'm not sure if that is adequate or not.
Any further ideas?
Thanks
Don
phillc54. Did as suggested. Everything looks ok except for the last few lines:-
hm2/hm2_7i96s.0: registered
Found file(lib): /usr/share/linuxcnc/hallib/qtplasmac_comp.hal
Found file(REL): ./custom.hal
Starting DISPLAY program: qtvcp
USRMOT: ERROR: command 30 timeout
emcMotionInit: emcTrajInit failed
Looks like the problem is in qtvcp - which is not really a surprise.
bkt. Python version is 3.7.3. I'm not sure if that is adequate or not.
Any further ideas?
Thanks
Don
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- snowgoer540
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02 Nov 2023 23:18 #284397
by snowgoer540
Replied by snowgoer540 on topic QTPlasmaC can't find Python3-serial
what is the output of:
apt show python3-serial | grep -i versionPlease Log in or Create an account to join the conversation.
03 Nov 2023 09:48 #284424
by donell
Replied by donell on topic QTPlasmaC can't find Python3-serial
snowgoer540 -
Output fromapt show python3-serial | grep -i versionis
python3-serial is version 3.4-4
Don
Output fromapt show python3-serial | grep -i versionis
python3-serial is version 3.4-4
Don
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03 Nov 2023 09:49 #284425
by donell
Replied by donell on topic QTPlasmaC can't find Python3-serial
snowgoer540 -
Output from
apt show python3-serial | grep -i version
is
Version: 3.4-4
Don
Output from
apt show python3-serial | grep -i version
is
Version: 3.4-4
Don
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03 Nov 2023 15:35 #284465
by snowgoer540
Replied by snowgoer540 on topic QTPlasmaC can't find Python3-serial
Are you running a RIP or a package install?
This may be failing somewhere else in the section of code that is wrapped in a try/except, and might not have anything to do with the “missing” package.
From a terminal can you do the follow:
python3
(Press enter)
Type:
import serial
(Press enter)
If that doesn’t produce an error, type this:
import serial.tools.list_ports as PORTS
(press enter)
If neither of those cause an error message, then it’s failing elsewhere and I will make some mods to the handler to give us more robust error messages to figure out the issue.
You can get out of the python session by typing quit()
Let me know the results, please.
This may be failing somewhere else in the section of code that is wrapped in a try/except, and might not have anything to do with the “missing” package.
From a terminal can you do the follow:
python3
(Press enter)
Type:
import serial
(Press enter)
If that doesn’t produce an error, type this:
import serial.tools.list_ports as PORTS
(press enter)
If neither of those cause an error message, then it’s failing elsewhere and I will make some mods to the handler to give us more robust error messages to figure out the issue.
You can get out of the python session by typing quit()
Let me know the results, please.
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03 Nov 2023 16:37 #284475
by tommylight
Replied by tommylight on topic QTPlasmaC can't find Python3-serial
Try this
sudo apt purge brltty*
Reboot and test.
-
This should be the first thing to try on any Linux when having issues with serial!!!
-
This has become a must in my experience as all the new-ish Linux distros will install brltty by default if any fancier keyboard is detected, and that in turn will stop anything serial working, /dev/serial/ will remain empty no matter how many stuff is plugged in and out.
If you get access denied, a quick search for arduino serial access will show how to deal with it by adding your user to "dialout" group, and in some cases using chmod to change permissions is needed, but rarely.
sudo apt purge brltty*
Reboot and test.
-
This should be the first thing to try on any Linux when having issues with serial!!!
-
This has become a must in my experience as all the new-ish Linux distros will install brltty by default if any fancier keyboard is detected, and that in turn will stop anything serial working, /dev/serial/ will remain empty no matter how many stuff is plugged in and out.
If you get access denied, a quick search for arduino serial access will show how to deal with it by adding your user to "dialout" group, and in some cases using chmod to change permissions is needed, but rarely.
The following user(s) said Thank You: snowgoer540
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03 Nov 2023 16:44 #284477
by snowgoer540
Replied by snowgoer540 on topic QTPlasmaC can't find Python3-serial
I didn’t know that, great advice Tommy!
I just ask that before he does that he does my check. I want to make sure the try/except is failing outside of the imports.
Then we can go on to make a better error message, perhaps with your recommendation if it comes to solve his problem.
I just ask that before he does that he does my check. I want to make sure the try/except is failing outside of the imports.
Then we can go on to make a better error message, perhaps with your recommendation if it comes to solve his problem.
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