From 11effeee2c38d1b3f5fc62e01e993f4a51dc1edf Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Sun, 20 Nov 2016 23:12:07 -0600
Subject: [PATCH] Add an option for delta to home to the top

---
 Marlin/Marlin_main.cpp                                       | 2 +-
 Marlin/example_configurations/delta/biv2.5/Configuration.h   | 3 +++
 Marlin/example_configurations/delta/generic/Configuration.h  | 3 +++
 .../example_configurations/delta/kossel_mini/Configuration.h | 3 +++
 .../example_configurations/delta/kossel_pro/Configuration.h  | 5 +++--
 .../example_configurations/delta/kossel_xl/Configuration.h   | 3 +++
 6 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index da54ce4d6c..975127a3f9 100755
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -3438,7 +3438,7 @@ inline void gcode_G28() {
 
   endstops.not_homing();
 
-  #if ENABLED(DELTA)
+  #if ENABLED(DELTA) && ENABLED(DELTA_HOME_TO_SAFE_ZONE)
     // move to a height where we can use the full xy-area
     do_blocking_move_to_z(delta_clip_start_height);
   #endif
diff --git a/Marlin/example_configurations/delta/biv2.5/Configuration.h b/Marlin/example_configurations/delta/biv2.5/Configuration.h
index 7151a9f3e4..5ea14c1811 100644
--- a/Marlin/example_configurations/delta/biv2.5/Configuration.h
+++ b/Marlin/example_configurations/delta/biv2.5/Configuration.h
@@ -452,6 +452,9 @@
   // in ultralcd.cpp@lcd_delta_calibrate_menu()
   //#define DELTA_CALIBRATION_MENU
 
+  // After homing move down to a height where XY movement is unconstrained
+  #define DELTA_HOME_TO_SAFE_ZONE
+
   //#define DELTA_ENDSTOP_ADJ { 0, 0, 0 }
 
 #endif
diff --git a/Marlin/example_configurations/delta/generic/Configuration.h b/Marlin/example_configurations/delta/generic/Configuration.h
index 962d68feab..ce8cbefa46 100644
--- a/Marlin/example_configurations/delta/generic/Configuration.h
+++ b/Marlin/example_configurations/delta/generic/Configuration.h
@@ -452,6 +452,9 @@
   // in ultralcd.cpp@lcd_delta_calibrate_menu()
   //#define DELTA_CALIBRATION_MENU
 
+  // After homing move down to a height where XY movement is unconstrained
+  #define DELTA_HOME_TO_SAFE_ZONE
+
   //#define DELTA_ENDSTOP_ADJ { 0, 0, 0 }
 
 #endif
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration.h b/Marlin/example_configurations/delta/kossel_mini/Configuration.h
index 71bd831152..af6ef53bfd 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration.h
@@ -452,6 +452,9 @@
   // in ultralcd.cpp@lcd_delta_calibrate_menu()
   //#define DELTA_CALIBRATION_MENU
 
+  // After homing move down to a height where XY movement is unconstrained
+  #define DELTA_HOME_TO_SAFE_ZONE
+
   //#define DELTA_ENDSTOP_ADJ { 0, 0, 0 }
 
 #endif
diff --git a/Marlin/example_configurations/delta/kossel_pro/Configuration.h b/Marlin/example_configurations/delta/kossel_pro/Configuration.h
index 36ad235b94..0bfcacd940 100644
--- a/Marlin/example_configurations/delta/kossel_pro/Configuration.h
+++ b/Marlin/example_configurations/delta/kossel_pro/Configuration.h
@@ -22,8 +22,6 @@
 
 /**
  * Example configuration file for OpenBeam Kossel Pro
- * tested on 2015-05-19 by @Wackerbarth
- * using Arduino 1.6.5 (Mac)
  */
 
 /**
@@ -441,6 +439,9 @@
   // in ultralcd.cpp@lcd_delta_calibrate_menu()
   //#define DELTA_CALIBRATION_MENU
 
+  // After homing move down to a height where XY movement is unconstrained
+  #define DELTA_HOME_TO_SAFE_ZONE
+
   //#define DELTA_ENDSTOP_ADJ { 0, 0, 0 }
 
 #endif
diff --git a/Marlin/example_configurations/delta/kossel_xl/Configuration.h b/Marlin/example_configurations/delta/kossel_xl/Configuration.h
index 40a8958cab..d174555612 100644
--- a/Marlin/example_configurations/delta/kossel_xl/Configuration.h
+++ b/Marlin/example_configurations/delta/kossel_xl/Configuration.h
@@ -450,6 +450,9 @@
   // in ultralcd.cpp@lcd_delta_calibrate_menu()
   //#define DELTA_CALIBRATION_MENU
 
+  // After homing move down to a height where XY movement is unconstrained
+  #define DELTA_HOME_TO_SAFE_ZONE
+
   //#define DELTA_ENDSTOP_ADJ { 0, 0, 0 }
 
 #endif