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Operaor Error With raspberrypi

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17 Apr 2024 15:22 #298456 by Abdulkareem
Operaor Error With raspberrypi was created by Abdulkareem
i am running linuxcnc on raspberrypi 4, and sometimes this error message is shown
 
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17 Apr 2024 15:58 #298457 by PCW
Replied by PCW on topic Operaor Error With raspberrypi
That indicates a real time issue on the RPI

Have you run a latency test?

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18 Apr 2024 11:00 #298545 by Abdulkareem
Replied by Abdulkareem on topic Operaor Error With raspberrypi
Yes I did 
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18 Apr 2024 11:20 #298548 by cornholio
Replied by cornholio on topic Operaor Error With raspberrypi
It's going to help if you can describe your system, are you using ethernet, SPI or gpios (software steeping). Mesa, remora or other hardware.

Your HAl & INI files will help as well.

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18 Apr 2024 12:27 #298551 by Abdulkareem
Replied by Abdulkareem on topic Operaor Error With raspberrypi
i am using ethernet and mesa 7i96s 

File Attachment:

File Name: Dental_CNC.hal
File Size:15 KB
 

File Attachment:

File Name: Dental_CNC.ini
File Size:6 KB
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18 Apr 2024 14:23 #298560 by PCW
Replied by PCW on topic Operaor Error With raspberrypi
Typically with a RPI4 you need to

set the force_turbo option true (in config.txt)
set isolcpus to 2,3 (in cmdline.txt)

You may also need to lower the servo thread
period to 2ms  (2000000)
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21 Apr 2024 15:04 #298781 by Abdulkareem
Replied by Abdulkareem on topic Operaor Error With raspberrypi
How to lower the servo thread period?

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21 Apr 2024 15:09 #298784 by PCW
Replied by PCW on topic Operaor Error With raspberrypi
Change
SERVO_PERIOD = 1000000

to
SERVO_PERIOD = 2000000
The following user(s) said Thank You: cornholio, Abdulkareem

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21 Apr 2024 15:10 #298785 by cornholio
Replied by cornholio on topic Operaor Error With raspberrypi
Change in your ini file
SERVO_PERIOD = 1000000
to
SERVO_PERIOD = 2000000
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