M4 doesn't work

ah, nice thanks.
Here is the spindle.txt

10 bit IN TRUE halui.spindle.0.override.count-enable
10 s32 IN 0 halui.spindle.0.override.counts <== SpindleOverride

Looks like you have your override active and turned all the way down which is like issuing
M4 S0

This will not activate spindle.0.on but it will activate halui.spindle.0.runs-backward.

Not sure what the issue is but I still suspect something with halui

Basic spindle operation is as expected in 2.10:

M3:



M4:

 


 

yes, i've seen this too. I think thats a clue

Maybe check the value of this signal when you issue M4 S...:

net SpindleOverride <= halui.spindle.0.override.counts <= arduino.lpoti.1.out

[edit]
Actually, if you are using a potentiometer then you may want to use halui.spindle.0.override.direct-value rather than .counts which would probably be used with an encoder.

Thanks for the suggestions. I've had a closer look at it and i conclude, i don't think this is the root of the issue.
I've made a short Video to show you:

So basically the issue seems to be that the M4 S.. command turns into M4 S0 which gives me the same behavior on an axis simulation config.

I presume that you have tried M4 S100 in a simulation config and checked the value of spindle.0.speed-out.

If that works then I'm afraid the only strategy I can think of is to start with a new config and add things step by step to find out what actually breaks the M4 functionality.

I now opened the standard sim axis and indeed M4 S100 works as expected.

I kind of tried to start with a new conifg by loading the first commit in my Git repo.
However nothing changed....

Unfortunately i too have the feeling, it is something with my config and or my machine, not a LinuxCNC Bug.

Unfortunately i too have the feeling, it is something with my config and or my machine, not a LinuxCNC Bug.

Fortunately for everybody else, that is likely the case. Although I'd sure like to know what is going on there.

So i now i created a new machine configuration using Pncconf. If i set a stepgen for the Spindle output it breaks M4.
When i edit the same config with Pncconf again and rempve the Spindle from the Stepgen, M4 works again.

Can somebody else confirm?