Stepgen and 4-phase steppers

Thank you!

Hi,

I have tried to configure (by hand, mostly copying configurations from uploaded examples) for one phase stepper motor control using Linuxcnc. Attached are *.hal and *.ini files. May I ask, if configuration files are right, assuming I connected L298N driver leads into parport 2, 3, 4, and 5 pins (motor A A* B B* leads I connected to L298N driver as suggested in spec.sheet)?

The stepper I am using is a motor from DVD ROM.
Driver - L298N.

My other question would be, if the parameters (e.g. cycle time, linear velocity, etc.) are set correct (I guess I left the default values)... Its hard to find those values for DVD ROM motor and L298N driver..

Thank you!

In your pinout.hal file there is
net XPA => parport.0.pin-03-out
net XPB => parport.0.pin-04-out
net XPC => parport.0.pin-05-out
net XPD => parport.0.pin-06-out

Not 2,3,4,5 as you say in the post, so correct that.
When testing set LinuxCNC to very low speed, like 100mm/minute and check if the motor turns.
Also set the step_type to 6 until the motor is turning correctly as it will make it easier to check, later you can try mode 7 or 8 or 9 and see what gets you more torque or more speed.

Yes, sorry, I made mistake in post here. The pins are 3, 4, 5, and 6. Thanks for correction.

I tried to load this configuration file, however, I got error: function 'parport.0.read' not found in core_stepper.hal. For this reason LinuxCNC terminated.

Gather everything from two hal files to one, then edit the ini to use only that hal file.
I see no reason why it is complaining about that, but might be due to the loading of real time stuff.

Finally it works! Thank you everyone for suggestions!

Just a reminder:

I wanted to drive stepper motor (taken from old DVD/CD/Floppy) with L298N using LinuxCNC.
Because Step/dir configuration could not be used, configuration must have been prepared manually (without config. wizard).

Below are the figure of hardware configuration, as well as added *.hal and *.ini files. *.var, and *.tbl files also should be included in the same directory (not added here).

Only 1 axis is configured. However, it is super easy to add other axis too (just copy-paste-rename X axis; change some number accordingly, e.g. axis number, naming, etc.)

Also, be aware that when manually tested motor movement in LinuxCNC (under continuous option) - the stepper motor will spin with no brake (as long as you press "+" or "-"). This might damage the sledge or motor, if being not careful.

Best,

Simonas.