Rename Z_LATE_ENABLE to Z_AUTODISABLE and refine description.

Also turn it on by default for the Mendel printer.

Also add the forgotten Mendel90 printer.

config/printer.mendel.h

@@ -176,12 +176,16 @@
 */
 //#define USE_INTERNAL_PULLUPS
 
-/** \def Z_LATE_ENABLE
+/** \def Z_AUTODISABLE
-  Some printers have a heavy z-axis, some a not self locking spindle. In that case
+  Automatically disable Z axis when not in use. This is useful for printers
-  you should not activate this. This will deactivate the stepper after a finished move,
+  with a self-locking Z axis, e.g. the various Mendel derivates.
-  and will only activate it, when z will move.
+
+  Other printers have a heavy Z axis or a not self-locking spindle. In that
+  case you should not activate this.
+
+  This option has no effect on controllers with a common stepper enable pin.
 */
-//#define Z_LATE_ENABLE
+#define Z_AUTODISABLE
 
 /** \def TEMP_HYSTERESIS
   Actual temperature must be target +/- this hysteresis before target

config/printer.mendel90.h

@@ -176,6 +176,17 @@
 */
 //#define USE_INTERNAL_PULLUPS
 
+/** \def Z_AUTODISABLE
+  Automatically disable Z axis when not in use. This is useful for printers
+  with a self-locking Z axis, e.g. the various Mendel derivates.
+
+  Other printers have a heavy Z axis or a not self-locking spindle. In that
+  case you should not activate this.
+
+  This option has no effect on controllers with a common stepper enable pin.
+*/
+#define Z_AUTODISABLE
+
 /** \def TEMP_HYSTERESIS
   Actual temperature must be target +/- this hysteresis before target
   temperature is considered to be achieved. Also, BANG_BANG tries to stay

config/printer.wolfstrap.h

@@ -176,12 +176,16 @@
 */
 //#define USE_INTERNAL_PULLUPS
 
-/** \def Z_LATE_ENABLE
+/** \def Z_AUTODISABLE
-  Some printers have a heavy z-axis, some a not self locking spindle. In that case
+  Automatically disable Z axis when not in use. This is useful for printers
-  you should not activate this. This will deactivate the stepper after a finished move,
+  with a self-locking Z axis, e.g. the various Mendel derivates.
-  and will only activate it, when z will move.
+
+  Other printers have a heavy Z axis or a not self-locking spindle. In that
+  case you should not activate this.
+
+  This option has no effect on controllers with a common stepper enable pin.
 */
-//#define Z_LATE_ENABLE
+//#define Z_AUTODISABLE
 
 /** \def TEMP_HYSTERESIS
   Actual temperature must be target +/- this hysteresis before target

configtool/miscellaneouspage.py

@@ -13,7 +13,7 @@ class MiscellaneousPage(wx.Panel, Page):
     self.font = font
 
     self.labels = {'USE_INTERNAL_PULLUPS': "Use Internal Pullups",
-                   'Z_LATE_ENABLE': "Z Late Enable",
+                   'Z_AUTODISABLE': "Z Autodisable",
                    'EECONFIG': "Enable EEPROM Storage",
                    'BANG_BANG': "Enable",
                    'BANG_BANG_ON': "On PWM Level:",
@@ -75,7 +75,7 @@ class MiscellaneousPage(wx.Panel, Page):
     cb = self.addCheckBox(k, self.onCheckBox)
     sz.Add(cb, pos = (6, 1))
 
-    k = 'Z_LATE_ENABLE'
+    k = 'Z_AUTODISABLE'
     cb = self.addCheckBox(k, self.onCheckBox)
     sz.Add(cb, pos = (7, 1))
 

configtool/printer.generic.h

@@ -176,12 +176,16 @@
 */
 #define USE_INTERNAL_PULLUPS
 
-/** \def Z_LATE_ENABLE
+/** \def Z_AUTODISABLE
-  Some printers have a heavy z-axis, some a not self locking spindle. In that case
+  Automatically disable Z axis when not in use. This is useful for printers
-  you should not activate this. This will deactivate the stepper after a finished move,
+  with a self-locking Z axis, e.g. the various Mendel derivates.
-  and will only activate it, when z will move.
+
+  Other printers have a heavy Z axis or a not self-locking spindle. In that
+  case you should not activate this.
+
+  This option has no effect on controllers with a common stepper enable pin.
 */
-#define Z_LATE_ENABLE
+#define Z_AUTODISABLE
 
 /** \def TEMP_HYSTERESIS
   Actual temperature must be target +/- this hysteresis before target

dda.c

@@ -279,7 +279,7 @@ void dda_create(DDA *dda, TARGET *target) {
 		stepper_enable();
 		x_enable();
 		y_enable();
-    #ifndef Z_LATE_ENABLE
+    #ifndef Z_AUTODISABLE
       z_enable();
     // #else Z is enabled in dda_start().
     #endif
@@ -495,7 +495,7 @@ void dda_start(DDA *dda) {
 	if ( ! dda->nullmove) {
 		// get ready to go
 		psu_timeout = 0;
-    #ifdef Z_LATE_ENABLE
+    #ifdef Z_AUTODISABLE
       if (dda->delta[Z])
         z_enable();
     #endif
@@ -720,7 +720,7 @@ void dda_step(DDA *dda) {
 		#ifdef	DC_EXTRUDER
 			heater_set(DC_EXTRUDER, 0);
 		#endif
-    #ifdef Z_LATE_ENABLE
+    #ifdef Z_AUTODISABLE
       // Z stepper is only enabled while moving.
       z_disable();
     #endif