G34 stepper locks

[InsanityAutomation]

Allow locking/unlocking individual steppers when multiple z steppers exist for manual movements.

[thinkyhead]

Can you detail how it changes G34 / M422 and outline the new usage for the reader? The descriptions you supply may also be used in the website documentation. Thanks!

[sjasonsmith]

I'm having a little trouble understanding how to use it.

I see that I would use something like G34 Z1 to lock and/or unlock Z1, but how do I tell it whether it is locked or unlocked?

I suppose I see two different workflows people might want with this:

• Lock only one motor
• Lock all motors except one

[sjasonsmith]

but how do I tell it whether it is locked or unlocked?

I see, there is an S argument that isn't listed at the top of the G34 changes.

Lock only one motor (might be inverted?)
G34 Z3 S1

Lock all but one motor

G34 Z1 S1
G34 Z2 S1
G34 Z4 S1

Maybe it would make sense to expand L to allow both enabling and disabling all motors.

[thinkyhead]

I tweaked it so that you can send L followed by a Z parameter on the same line. The meaning of L is unlock, so you'd be just specifying a single axis to lock. Since most of the time you probably want the opposite — all axes locked with one free — it might do to expand L so that L0 means unlock all and L1 (or L by itself) means "lock all." And then your Zn indicates the reverse of that.