Bug fixes for Z_PROBE_AND_ENDSTOP.

Code cleanup for Z_PROBE_AND_ENDSTOP.
Added Z_PROBE_PIN to pins_RAMPS_13.h

Marlin/Configuration.h

 // As of 3-28-2015, there are NO Z Probe pins defined in any board config files.
 // Z_PROBE_PIN is for the signal pin only. RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board for the signal.
 // The D32 pin in Aux 4 on RAMPS maps to the Arduino D32 pin. The Z_PROBE_PIN is setting the pin to use on the Arduino. Since the D32 pin on the RAMPS maps to D32 on Arduino, this works.
-// If you have RAMPS 1.3/1.4 and want to use the RAMPS D32 pin, set Z_PROBE_PIN to 32 and use ground and 5v next to it as needed. Check the RAMPS 1.3/1.4 pinout diagram for details.
+// D32 is currently selected in the RAMPS 1.3/1.4 pin file. Update the pins.h file for your control board to make use of this. Not doing so nullifies Z_PROBE_AND_ENDSTOP
 // WARNING: Setting the wrong pin may have unexpected and disastrous outcomes. Use with caution and do your homework.
-  #define Z_PROBE_PIN -1
 
 // Mechanical endstop with COM to ground and NC to Signal uses "false" here (most common setup).
     const bool Z_PROBE_ENDSTOP_INVERTING = false; // set to true to invert the logic of the endstop.

Marlin/Marlin_main.cpp

     
     st_synchronize();
     
+    #if defined(Z_PROBE_AND_ENDSTOP)
+    bool z_probe_endstop = (READ(Z_PROBE_PIN) != Z_PROBE_ENDSTOP_INVERTING);
+    if (z_probe_endstop)
+    #else
     bool z_min_endstop = (READ(Z_MIN_PIN) != Z_MIN_ENDSTOP_INVERTING);
-    if (!z_min_endstop)
+    if (z_min_endstop)
+    #endif
     {
         if (!Stopped)
         {
   #endif
   #if defined(Z_PROBE_PIN) && Z_PROBE_PIN >-1
     SERIAL_PROTOCOLPGM(MSG_Z_PROBE);
-    SERIALPROTOCOLLN(((READ(Z_PROBE_PIN)^72Z_PROBE_ENDSTOP_INVERTING)?MSG_ENDSTOP_HIT:MSG_ENDSTOP_OPEN));
+    SERIAL_PROTOCOLLN(((READ(Z_PROBE_PIN)^Z_PROBE_ENDSTOP_INVERTING)?MSG_ENDSTOP_HIT:MSG_ENDSTOP_OPEN));
   #endif
 }
 

Marlin/pins_RAMPS_13.h

   #define FILWIDTH_PIN        5
 #endif
 
+#if defined(Z_PROBE_ANDENDSTOP)
+  // Define a pin to use as the signal pin on Arduino for the Z_PROBE endstop.
+ #define 32
+#endif
+
 #if defined(FILAMENT_RUNOUT_SENSOR)
   // define digital pin 4 for the filament runout sensor. Use the RAMPS 1.4 digital input 4 on the servos connector
   #define FILRUNOUT_PIN        4

Marlin/stepper.cpp

 
         #if defined(Z_PROBE_PIN) && Z_PROBE_PIN > -1
           UPDATE_ENDSTOP(z, Z, probe, PROBE);
-          bool z_probe_endstop(READ(Z_PROBE_PIN) != Z_MIN_ENDSTOP_INVERTING);
+          z_probe_endstop=(READ(Z_PROBE_PIN) != Z_MIN_ENDSTOP_INVERTING);
           if(z_probe_endstop && old_z_probe_endstop)
           {
         	  endstops_trigsteps[Z_AXIS] = count_position[Z_AXIS];
         	  endstop_z_hit=true;
 
 //        	  if (z_probe_endstop && old_z_probe_endstop) SERIAL_ECHOLN("z_probe_endstop = true");
-
-
-        	  if (!(performing_homing)) //if not performing home
-        	  {
-        		  step_events_completed = current_block->step_event_count;
-        	  }
           }
           old_z_probe_endstop = z_probe_endstop;
-          old_z2_probe_endstop = z2_probe_endstop;
         #endif
       }
     }
 
         #if defined(Z_PROBE_PIN) && Z_PROBE_PIN > -1
           UPDATE_ENDSTOP(z, Z, probe, PROBE);
-          bool z_probe_endstop(READ(Z_PROBE_PIN) != Z_MAX_ENDSTOP_INVERTING);
+          z_probe_endstop=(READ(Z_PROBE_PIN) != Z_MAX_ENDSTOP_INVERTING);
           if(z_probe_endstop && old_z_probe_endstop)
           {
         	  endstops_trigsteps[Z_AXIS] = count_position[Z_AXIS];
         	  endstop_z_hit=true;
-
 //        	  if (z_probe_endstop && old_z_probe_endstop) SERIAL_ECHOLN("z_probe_endstop = true");
-
-
-        	  if (!(performing_homing)) //if not performing home
-        	  {
-        		  step_events_completed = current_block->step_event_count;
-        	  }
           }
           old_z_probe_endstop = z_probe_endstop;
-          old_z2_probe_endstop = z2_probe_endstop;
         #endif
       }
     }