[SOLVED] get to work an old stepper_mm machine

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22 Dec 2024 12:14 - 22 Dec 2024 13:30 #317140 by cromlin
Hello. I've been using linuxcnc from emc2 until 2019. now I have to restore my old machine. I cut foam. I installed 2.7.4 old distro but cannot get it to work. I saved old config files, try to use them but cannot get to work.
as far as I remember I only changed standart_pinout and that's all. Motors are connected and I cannot rotate them by hand, but cannot remember what should I do more.
from default
net Xstep => parport.0.pin-03-out
net Xdir  => parport.0.pin-02-out
net Ystep => parport.0.pin-05-out
net Ydir  => parport.0.pin-04-out
to
net Xstep => parport.0.pin-02-out
net Xdir  => parport.0.pin-03-out
net Ystep => parport.0.pin-04-out
net Ydir  => parport.0.pin-05-out.
I remember I inverted them with
setp parport.0.pin-03-out-invert 1
but it doesn't help also.
machine is very simple stepper_mm with parport.
it seems something simple but I cannot remember. please help if possible.

edit: I started Stepper Configuration Wizard and remembered that machine is based on L297.
then I tried cat /proc/ioports and lspci -v but haven't found anything 0378-037a or 278: is it possible my parallel port is dead or maybe wheezy didn't install driver for it? maybe try buster.
edit: BIOS says parport is 378, irq7.
EDIT: holy moses! i lurked linuxcnc forums and somehow from other topics found something "holds" or uses parport. then after
sudo rmmod ppdev sudo rmmod lp
parport "freed" and motors began to move. thanks to linuxcnc.
I leave this thread in case if someone will be also googling similar problem.
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Last edit: 22 Dec 2024 13:30 by cromlin. Reason: new info
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04 Jan 2025 14:05 #318065 by tommylight
Replied by tommylight on topic [SOLVED] get to work an old stepper_mm machine
Thank you for reporting back with the solution.

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