Move G42 to G44 to allow for CNC G42/G43

[thinkyhead]

The G42 command is currently assigned to "Move to Mesh Point." As this is a less essential feature and not used inside of sliced G-code, I propose to move this function to the unassigned G-code (both in RepRap and in CNC) G44 so that we can make room for the G42 and G43 commands which are used in CNC for Dynamic Cutter Compensation (radius and left/right of path) and for Tool Length Offset.

[GMagician]

CNC machine uses G40, G41 and G42 for tool compensation, G43 is not used for that purpose as I know

EDIT: G43 tool lenght...sorry I lost this statement

[thinkyhead]

As I'm implementing CNC features for a client, in the process I'm trying to maintain compatible codes (following LinuxCNC guidance), and also aiming to retain the expected behavior of CNC G-code — such as permitting multiple Gnn codes within a single line of G-code. While I cannot merge these features for a while, it seems like a good idea to clear out space early.

[GMagician]

There is also the possibility to have same gcode that act in a different way depending on "machine typology" this, maybe, can be a solution for historical commands that cannot be moved.

[thinkyhead]

True. I think it's relatively safe to deprecate G42 in favor of G44. Most of the time when codes are added we are more careful to check both RepRap.org and LinuxCNC.org.

[boelle]

@thinkyhead did you do the move of G42 to G44 ?

[boelle]

this one has gone stale and the discussion could be done on discord as well

Marlin Discord server. Join link: https://discord.gg/n5NJ59y

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.