Z Safe Homing for all

[thinkyhead]

The Z_SAFE_HOMING feature is coupled in a pretty basic way with probes and not leveling, so we might as well make it available for general use. This keeps it enabled or disabled as it was in the existing configs.

[AnHardt]

So here's the question! Should these options (and the rest of the probe options) be moved out of the AUTO_BED_LEVELING_FEATURE block? Or, should I alter the code so Z_SAFE_HOMING will work without these options defined?

Yes. Please move all the probe stuff out of AUTO_BED_LEVELING_FEATURE. Alexanders wish to use Z_SAFE_HOMING indicates he is using a probe for homing. If he'd use an ordinary endtop there would no need for Z_SAFE_HOMING.

But i'm still convinced this 'bigger plan' is not necessary a good one for an RC. If you try to do it in the configurations only, you will realize very soon, how deep the probes are woven in, into the bed leveling code, in MarlinMain.cpp.

[thinkyhead]

I'm sure it's a tangle. I will proceed with great care.

[jbrazio]

@thinkyhead I will agree with @AnHardt here, we should go stable on this branch.

[thinkyhead]

@jbrazio I agree this can wait till 1.1.1. I'm just looking for something new to fix so I won't get bored waiting for the 5 issues that are blocking RC6 to get some resolution.

[jbrazio]

@thinkyhead have you decided how to proceed into MarlinDev ? Will you rebase it against RC or manually push the patches there ? Or start from scratch based on HEAD RC ?

[thinkyhead]

Well, I started reorganizing the RCBugFix files into the MarlinKimbra layout, and that seems ok. The dev and RC code have diverged a lot, but it shouldn't take me more than a few hours to bring them into full parity, each with their current layout. Some bits may have been fixed in dev that haven't yet migrated to RCBugFix, but most migration will be going the other way. I wish it was as easy as rebasing all commits from RC onto dev. But, it would take some tricky maneuvering. (First, match the file layout of RCBugFix, then rebase RC on top of dev, then move dev back into its new layout…) Anyway, I will figure out some way to make it go quicker.