Operaor Error With raspberrypi

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2 years 6 months ago #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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2 years 6 months ago #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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2 years 6 months ago #298545 by Abdulkareem
Replied by Abdulkareem on topic Operaor Error With raspberrypi
Yes I did 

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2 years 6 months ago #298548 by Cant do this anymore bye all
Replied by Cant do this anymore bye all 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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2 years 6 months ago #298551 by Abdulkareem
Replied by Abdulkareem on topic Operaor Error With raspberrypi
i am using ethernet and mesa 7i96s 

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2 years 6 months ago #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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2 years 6 months ago #298781 by Abdulkareem
Replied by Abdulkareem on topic Operaor Error With raspberrypi
How to lower the servo thread period?

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2 years 6 months ago #298784 by PCW
Replied by PCW on topic Operaor Error With raspberrypi
Change
SERVO_PERIOD = 1000000

to
SERVO_PERIOD = 2000000

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2 years 6 months ago #298785 by Cant do this anymore bye all
Replied by Cant do this anymore bye all on topic Operaor Error With raspberrypi
Change in your ini file
SERVO_PERIOD = 1000000
to
SERVO_PERIOD = 2000000

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2 years 5 months ago #299929 by Abdulkareem
Replied by Abdulkareem on topic Operaor Error With raspberrypi
I was wondering if I used a mini industrial PC, will I get higher speeds

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