[gnea/grbl-Mega Issue#65] Pin definition, swapping Y and Z and disabling Z for a laser printer

Dear all,

from some preliminary testing it seems that grbl will run on RAMP just fine, however this laser printer has the two motors pushing the Y and no Z axis.

I found some threads showing code changes to literally just swap the axis definitions (ie the pins they were associated with), however I guess the code changes a lot since then and those changes no longer work.

The closest thing I can identify as a place where to make this change is cpumap.h, the defines for [XYZ]STEP_BIT . Would that be the place to swap axis? anywhere else?

also, there’s things like homing that will involve attempting to home the Z axis and fail since the axis doesn’t exist… is there any way I could completely disable the axis? for the homing specifically I found a define that seems to address that problem tho, but I’m worried more will pop up.

thank you for your help,