M600.cfg

# WIP
# Usage:
# M600 [X<num>] [Y<num>] [Z<mum>] [E<num>] [L<num>] [N]
#   X: position
#   Y: position
#   Z: relative lift distance
#   E: initial retract
#   L: later retract distance for removal
#   N: (no return) Don't return to the previous position after filament change
# See: https://reprap.org/wiki/G-code#M600:_Filament_change_pause
[gcode_macro M600]
description: Filament change pause (Klipper compatible G-code)
gcode:
    {% set default_x = printer.toolhead.axis_minimum.x + 20 %}
    {% set default_y = printer.toolhead.axis_minimum.y + 20 %}
    {% set default_e = 100 %}

    {% if 'save_variables' in printer %}
        {% set svv = printer.save_variables.variables %}
        {% if 'park_x' in svv %}
            {% set default_x = svv.park_x %}
        {% endif %}
        {% if 'park_y' in svv %}
            {% set default_y = svv.park_y %}
        {% endif %}
        {% if 'bowden_length' in svv %}
            {% set default_e = svv.bowden_length %}
        {% endif %}
    {% endif %}

    {% set x = params.X|default(default_x)|float %}
    {% set y = params.Y|default(default_y)|float %}
    {% set z = params.Z|default(20)|float %}
    {% set e = params.E|default(default_e)|float %}

    {% if printer.pause_resume.is_paused %}
        {action_respond_info("Already paused")}
    {% elif printer.toolhead.homed_axes != "xyz" %}
        {action_respond_info("Please home XYZ first")}
    {% else %}
        {% if params.N is not defined %}
            SAVE_GCODE_STATE NAME=M600_state
            PAUSE_PARK X={x} Y={y} Z={z}
            M702 U{e}
            RESTORE_GCODE_STATE NAME=M600_state MOVE=1
        {% else %}
            SAVE_GCODE_STATE NAME=M600_state
            PAUSE_PARK X={x} Y={y} Z={z}
            M702 U{e}
            RESTORE_GCODE_STATE NAME=M600_state MOVE=0
        {% endif %}
    {% endif %}