trying to get ender 3 v2 screen on raspberry pi to run on boot | Mainsail | Page 1

desert mauve Aug 24, 2024, 7:16 PM

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Trying to get it to run on boot, it wont do so, and ive executed all commands, one thing i saw tho was that the simplelcd.service would not start. The screen works when i manually do the commands tho, heres the journalctl
Aug 23 18:08:42 carterpi systemd[1]: simpleLCD.service: Failed with result 'exit-code'.
Aug 23 18:08:43 carterpi systemd[1]: simpleLCD.service: Scheduled restart job, restart counter is at 2.
Aug 23 18:08:43 carterpi systemd[1]: Stopped simpleLCD.service - My LCD Service.
Aug 23 18:08:43 carterpi systemd[1]: Started simpleLCD.service - My LCD Service.
Aug 23 18:08:43 carterpi systemd[1]: simpleLCD.service: Main process exited, code=exited, status=217/USER

tropic pawn Aug 24, 2024, 7:18 PM

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Quick question as I'm not familiar with that service, can you send a link to the docs about this?

desert mauve Aug 24, 2024, 7:18 PM

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Yes!

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https://github.com/bustedlogic/DWIN_T5UIC1_LCD

GitHub

GitHub - bustedlogic/DWIN_T5UIC1_LCD: Python class for the Ender 3 ...

Python class for the Ender 3 V2 LCD. Contribute to bustedlogic/DWIN_T5UIC1_LCD development by creating an account on GitHub.

tropic pawn Aug 24, 2024, 7:19 PM

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So it's no klipper feature but some kind of addon?

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Or is that just a tutorial?

desert mauve Aug 24, 2024, 7:20 PM

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tropic pawn So it's no klipper feature but some kind of addon?

Correct

wraith turretBOT Aug 24, 2024, 7:21 PM

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tropic pawn Aug 24, 2024, 7:22 PM

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The screen works when i manually do the commands tho
What commands?

desert mauve Aug 24, 2024, 7:23 PM

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cd DWIN_T5UIC1_LCD
python3 ./run.py

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I am also open to having other ways to run at boot

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i just am not sure where to start

tropic pawn Aug 24, 2024, 7:24 PM

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The service outputs into that file /tmp/lcd.log. Have a look at it

tropic pawn Aug 24, 2024, 7:25 PM

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desert mauve I am also open to having other ways to run at boot

The problem is, I don't know anything about that script and I'm not really willing into reading deep into this

desert mauve Aug 24, 2024, 7:26 PM

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I cant find it in winscp

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tropic pawn Aug 24, 2024, 7:27 PM

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Try out this exact command: /usr/bin/env python3 /home/pi/DWIN_T5UIC1_LCD/run.py > /tmp/lcd.log 2>&1

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Wait, what's the username of your pi?

desert mauve Aug 24, 2024, 7:28 PM

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ctn3770

tropic pawn Aug 24, 2024, 7:28 PM

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It's carterpi, isn't it?

desert mauve Aug 24, 2024, 7:29 PM

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Oh of the pi?

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the name of the pi is carterpi, the user is ctn3770

tropic pawn Aug 24, 2024, 7:29 PM

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Yeah of the pi

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Ok

desert mauve Aug 24, 2024, 7:29 PM

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tropic pawn Aug 24, 2024, 7:29 PM

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Output of cat /lib/systemd/system/simpleLCD.service

desert mauve Aug 24, 2024, 7:30 PM

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ctn3770@carterpi:~ $ cat /lib/systemd/system/simpleLCD.service
[Unit]
Description=My LCD Service
After=multi-user.target

[Service]
Type=idle
ExecStartPre=/bin/sleep 30
ExecStart=/usr/bin/python3 /home/ctn3770/DWIN_T5UIC1_LCD/run.py
User=ctn3770
Restart=always
[Install]
WantedBy=multi-user.target
ctn3770@carterpi:~ $

tropic pawn Aug 24, 2024, 7:31 PM

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Any reason why you deleted the /bin/sh?

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And the log output too

desert mauve Aug 24, 2024, 7:32 PM

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I did?

tropic pawn Aug 24, 2024, 7:32 PM

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At least it's different to the repo you sent

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https://github.com/bustedlogic/DWIN_T5UIC1_LCD/blob/main/simpleLCD.service

GitHub

DWIN_T5UIC1_LCD/simpleLCD.service at main · bustedlogic/DWIN_T5UIC1...

Python class for the Ender 3 V2 LCD. Contribute to bustedlogic/DWIN_T5UIC1_LCD development by creating an account on GitHub.

desert mauve Aug 24, 2024, 7:32 PM

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I didnt even realise

tropic pawn Aug 24, 2024, 7:33 PM

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I recommend to adjust it, just to be sure.

desert mauve Aug 24, 2024, 7:33 PM

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I can change that rq

tropic pawn Aug 24, 2024, 7:33 PM

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You also got a user and a restart policy ^^

desert mauve Aug 24, 2024, 7:33 PM

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yeah lol, i was reccomended to add it

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i will remove those

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and try the new one with the username of the pi

tropic pawn Aug 24, 2024, 7:34 PM

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It should be fine, but I'm not the best in such linux things ^^

desert mauve Aug 24, 2024, 7:36 PM

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Still isnt working, ill get the log output

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python3: can't open file '/home/pi/DWIN_T5UIC1_LCD/run.py': [Errno 2] No such file or directory

tropic pawn Aug 24, 2024, 7:37 PM

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You didn't adjust the path

desert mauve Aug 24, 2024, 7:37 PM

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tropic pawn Aug 24, 2024, 7:37 PM

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It's /home/ctn3770/...

desert mauve Aug 24, 2024, 7:37 PM

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isnt this correct tho?

tropic pawn Aug 24, 2024, 7:37 PM

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Yes it is

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Weird one

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Did you reload the service?

desert mauve Aug 24, 2024, 7:38 PM

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Yes

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tropic pawn Aug 24, 2024, 7:38 PM

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It wouldn't make sense otherwise ^^

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Do a reboot and check the log again

desert mauve Aug 24, 2024, 7:39 PM

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Ill try a reboot

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For some reason it isnt putting out a log

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lemme try another reboot

tropic pawn Aug 24, 2024, 7:47 PM

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desert mauve For some reason it isnt putting out a log

It doesn't have to.

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Ah, ok. It should log at least one line, if it starts

desert mauve Aug 24, 2024, 7:48 PM

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Process: 1322 ExecStart=/usr/bin/env python3 /home/ctn3770/DWIN_T5UIC1_LCD/>
Main PID: 1322 (code=exited, status=217/USER)
CPU: 0

Aug 24 14:48:17 carterpi systemd[1]: simpleLCD.service: Scheduled restart job, >
Aug 24 14:48:17 carterpi systemd[1]: Stopped simpleLCD.service - My LCD Service.
Aug 24 14:48:17 carterpi systemd[1]: simpleLCD.service: Start request repeated >
Aug 24 14:48:17 carterpi systemd[1]: simpleLCD.service: Failed with result 'exi>
Aug 24 14:48:17 carterpi systemd[1]: Failed to start simpleLCD.service - My LCD>
lines 1-13/13 (END)

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Theres no log shown, and here is the status

tropic pawn Aug 24, 2024, 7:49 PM

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Run /usr/bin/env python3 /home/ctn3770/DWIN_T5UIC1_LCD/run.py

desert mauve Aug 24, 2024, 7:51 PM

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ctn3770@carterpi:~ $ /usr/bin/env python3 /home/ctn3770/DWIN_T5UIC1_LCD/run.py

DWIN handshake
DWIN OK.
the ip
Waiting for connect to /home/ctn3770/printer_data/comms/klippy.sock

Connection.

Boot looks good
Testing Web-services
Web site exists

tropic pawn Aug 24, 2024, 7:56 PM

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Then the only thing coming to my mind would be to increase the startup delay or add debugging prints into the python code, to check if it's even starting

desert mauve Aug 24, 2024, 7:56 PM

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How could i do that?

tropic pawn Aug 24, 2024, 7:57 PM

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The startup delay is in the service

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Currently it's at 30s

desert mauve Aug 24, 2024, 7:58 PM

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Ah

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ill try 50

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How do i add the debugging prints>

tropic pawn Aug 24, 2024, 7:59 PM

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In the /home/ctn3770/DWIN_T5UIC1_LCD/run.py file you could add print('Test') at the beginning of the file and at various other lines

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That way it should print those into the log file and we can see where the error happens

desert mauve Aug 24, 2024, 8:04 PM

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Ill do that

desert mauve Aug 24, 2024, 8:05 PM

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tropic pawn That way it should print those into the log file and we can see where the error ...

what if it isnt printing the log?

tropic pawn Aug 24, 2024, 8:05 PM

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Then it doesn't even start the file

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I will then ask someone else to correct that service file

tropic pawn Aug 24, 2024, 8:09 PM

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desert mauve what if it isnt printing the log?

So it doesn't print anything?

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Make sure to reboot once

desert mauve Aug 24, 2024, 8:09 PM

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Im rebooting rn

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Ill check again

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Nope, no print

tropic pawn Aug 24, 2024, 8:11 PM

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Remember, it needs like 50s before it starts

desert mauve Aug 24, 2024, 8:12 PM

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Just checked again

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still nothing

tropic pawn Aug 24, 2024, 8:12 PM

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k

desert mauve Aug 24, 2024, 8:15 PM

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rip

tropic pawn Aug 24, 2024, 8:31 PM

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I asked someone to look at it

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Maybe he got some idea

weak lion Aug 24, 2024, 9:11 PM

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What does happen if you start thr run.py in a terminal session?(aka ssh command prompt)

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How does the file permissions look like? ls -al path/to/run.py

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Which version of python has to be used for this script? Is it installed? If it is python3 did you try /usr/bin/python3 in your service file?

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Whats the output of whereis python ?

desert mauve Aug 25, 2024, 2:25 PM

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Let me try this today once i get home

desert mauve Sep 13, 2024, 3:43 AM

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Hi, sorry for the wait, i am finally trying to figure this out once again lol

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Whereis python is python: /usr/bin/python /usr/share/man/man1/python.1.gz

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And for some reason the run.py stopped working, now yielding ctn3770@carterpi:~/DWIN_T5UIC1_LCD $ python3 ./run.py
Test
Traceback (most recent call last):
File "/home/ctn3770/DWIN_T5UIC1_LCD/./run.py", line 3, in <module>
from dwinlcd import DWIN_LCD
File "/home/ctn3770/DWIN_T5UIC1_LCD/dwinlcd.py", line 6, in <module>
from RPi import GPIO

tropic pawn Sep 13, 2024, 8:00 AM

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We would need the whole traceback

desert mauve Sep 13, 2024, 8:39 PM

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tropic pawn We would need the whole traceback

like the log?

tropic pawn Sep 13, 2024, 9:10 PM

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No, you copied something. But you copied only the first few lines

desert mauve Sep 13, 2024, 10:10 PM

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