From 9e50375c034d054e6fb705d6eb110722198deb76 Mon Sep 17 00:00:00 2001
From: elpopo <68954733+elpopo-eng@users.noreply.github.com>
Date: Sun, 25 Feb 2024 17:37:35 +0100
Subject: [PATCH] Add a park front macro for toolhead maintenance (#494)

---
 macros/base/park.cfg | 62 +++++++++++++++++++++++++++-----------------
 1 file changed, 38 insertions(+), 24 deletions(-)

diff --git a/macros/base/park.cfg b/macros/base/park.cfg
index 0c1196925..b6b24c212 100644
--- a/macros/base/park.cfg
+++ b/macros/base/park.cfg
@@ -24,30 +24,44 @@ gcode:
         {% set z_safe = max_z %}
     {% endif %}
 
-    {% if printer.toolhead.homed_axes != "xyz" %}
-        RESPOND MSG="Cannot park because XYZ not homed"
-    {% else %}      # retract filament before move up toolhead
-        {% if printer.extruder.can_extrude %}
-            {% if firmware_retraction_enabled %}    # use firmware_retraction parameter for retract (in case firmware retraction is selected in printer.cfg)
-                {% if verbose %}
-                    RESPOND MSG="Firmware retraction enabled, Extruder retraction = {printer.firmware_retraction.retract_length}"
-                {% endif %}
-                G10
-            {% else %}                              # otherwise:
-                {% if MATERIAL != "XXX" %}          # use material parameter if available for retract, otherwise use default value
-                    {% set material = printer["gcode_macro _USER_VARIABLES"].material_parameters[MATERIAL] %}
-                    {% set E = material.retract_length %}
-                {% endif %}
-                {% if verbose %}
-                    RESPOND MSG="Firmware retraction disabled, Extruder retraction = {E}"
-                {% endif %}
-                G92 E0
-                G1 E-{E} F2100
+    _CG28 ; home if not already homed
+
+    {% if printer.extruder.can_extrude %}
+        {% if firmware_retraction_enabled %}    # use firmware_retraction parameter for retract (in case firmware retraction is selected in printer.cfg)
+            {% if verbose %}
+                RESPOND MSG="Firmware retraction enabled, Extruder retraction = {printer.firmware_retraction.retract_length}"
+            {% endif %}
+            G10
+        {% else %}                              # otherwise:
+            {% if MATERIAL != "XXX" %}          # use material parameter if available for retract, otherwise use default value
+                {% set material = printer["gcode_macro _USER_VARIABLES"].material_parameters[MATERIAL] %}
+                {% set E = material.retract_length %}
+            {% endif %}
+            {% if verbose %}
+                RESPOND MSG="Firmware retraction disabled, Extruder retraction = {E}"
             {% endif %}
-        {% else %}
-            RESPOND MSG="no extruder retraction because extruder temperature ({printer.extruder.temperature}) is lower than min_extrude_temp ({printer.configfile.config.extruder.min_extrude_temp})"
+            G92 E0
+            G1 E-{E} F2100
         {% endif %}
-        G90
-        G1 Z{z_safe} F{Sz}
-        G0 X{Px} Y{Py} F{St}
+    {% else %}
+        RESPOND MSG="no extruder retraction because extruder temperature ({printer.extruder.temperature}) is lower than min_extrude_temp ({printer.configfile.config.extruder.min_extrude_temp})"
     {% endif %}
+
+    G90
+    G1 Z{z_safe} F{Sz}
+    G0 X{Px} Y{Py} F{St}
+
+
+[gcode_macro PARK_FRONT]
+description: Park the toolhead on the front of the printer for maintenance
+gcode:
+    {% set St = printer["gcode_macro _USER_VARIABLES"].travel_speed * 60 %}
+    {% set Sz = printer["gcode_macro _USER_VARIABLES"].z_drop_speed * 60 %}
+
+    _CG28 ; home if not already homed
+
+    SAVE_GCODE_STATE NAME=PARK_FRONT
+    G90      ; absolute positioning
+    G0 Z{printer.toolhead.axis_maximum.z/3*2} F{Sz}
+    G0 X{printer.toolhead.axis_maximum.x/2} Y{printer.toolhead.axis_minimum.y+10} F{St}
+    RESTORE_GCODE_STATE NAME=PARK_FRONT