I haveĀ anticipatedĀ a probe function and left stubs in the code to support a probe function this would be based on Gcode G38.2, which is the Gcode probe command. Here is what I would do if I were doing this:
— add a G38 command to the Gcode parser:
case 38:
switch (_point(value)) {
case 2: SET_MODAL (MODAL_GROUP_G0, next_action, NEXT_ACTION_STRAIGHT_PROBE);
default: status = TG_UNRECOGNIZED_COMMAND;
}
break;
}
….Ā case NEXT_ACTION_STRAIGHT_PROBE: { status = cm_probe_cycle_start(); break;}
Add a file called cycle_probe.c modeled after cycle_homing.c. The homing logic can then be adapted to run a probe cycle. You will also need to go into gpio.c to configure any switches you are using, and to add a CYCLE_PROBE behavior to the ISR helper. CYCLE_PROBE is defined in canonical_machine.h, and would need to be set in cycle_probe.c when you enter the cycle.
Of course there’s a lot more to it than this, but hopefully this will get you started.
—Alden
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