From 80026729381685b3fd93bc1bf9bbabe9b6ac7d67 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Mon, 1 May 2017 12:20:25 -0500
Subject: [PATCH] Fixes for DUAL_NOZZLE_DUPLICATION_MODE

---
 Marlin/enum.h      |  2 +-
 Marlin/planner.cpp | 46 ++++++++++++++++++++++++----------------------
 2 files changed, 25 insertions(+), 23 deletions(-)

diff --git a/Marlin/enum.h b/Marlin/enum.h
index 1e993e918..642e331b4 100644
--- a/Marlin/enum.h
+++ b/Marlin/enum.h
@@ -161,7 +161,7 @@ enum LCDViewAction {
   LCDVIEW_CALL_NO_REDRAW
 };
 
-#if ENABLED(DUAL_X_CARRIAGE)
+#if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
   enum DualXMode {
     DXC_FULL_CONTROL_MODE,
     DXC_AUTO_PARK_MODE,
diff --git a/Marlin/planner.cpp b/Marlin/planner.cpp
index 09631ba1d..2fb9996d4 100644
--- a/Marlin/planner.cpp
+++ b/Marlin/planner.cpp
@@ -131,7 +131,7 @@ float Planner::previous_speed[NUM_AXIS],
 
 #if ENABLED(DISABLE_INACTIVE_EXTRUDER)
   uint8_t Planner::g_uc_extruder_last_move[EXTRUDERS] = { 0 };
-#endif // DISABLE_INACTIVE_EXTRUDER
+#endif
 
 #ifdef XY_FREQUENCY_LIMIT
   // Old direction bits. Used for speed calculations
@@ -863,27 +863,29 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
 
     #if ENABLED(DISABLE_INACTIVE_EXTRUDER) // Enable only the selected extruder
 
+      #define DISABLE_IDLE_E(N) if (!g_uc_extruder_last_move[N]) disable_E##N();
+
       for (uint8_t i = 0; i < EXTRUDERS; i++)
         if (g_uc_extruder_last_move[i] > 0) g_uc_extruder_last_move[i]--;
 
       switch(extruder) {
         case 0:
           enable_E0();
+          g_uc_extruder_last_move[0] = (BLOCK_BUFFER_SIZE) * 2;
           #if ENABLED(DUAL_X_CARRIAGE) || ENABLED(DUAL_NOZZLE_DUPLICATION_MODE)
             if (extruder_duplication_enabled) {
               enable_E1();
               g_uc_extruder_last_move[1] = (BLOCK_BUFFER_SIZE) * 2;
             }
           #endif
-          g_uc_extruder_last_move[0] = (BLOCK_BUFFER_SIZE) * 2;
           #if EXTRUDERS > 1
-            if (g_uc_extruder_last_move[1] == 0) disable_E1();
+            DISABLE_IDLE_E(1);
             #if EXTRUDERS > 2
-              if (g_uc_extruder_last_move[2] == 0) disable_E2();
+              DISABLE_IDLE_E(2);
               #if EXTRUDERS > 3
-                if (g_uc_extruder_last_move[3] == 0) disable_E3();
+                DISABLE_IDLE_E(3);
                 #if EXTRUDERS > 4
-                  if (g_uc_extruder_last_move[4] == 0) disable_E4();
+                  DISABLE_IDLE_E(4);
                 #endif // EXTRUDERS > 4
               #endif // EXTRUDERS > 3
             #endif // EXTRUDERS > 2
@@ -893,13 +895,13 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
           case 1:
             enable_E1();
             g_uc_extruder_last_move[1] = (BLOCK_BUFFER_SIZE) * 2;
-            if (g_uc_extruder_last_move[0] == 0) disable_E0();
+            DISABLE_IDLE_E(0);
             #if EXTRUDERS > 2
-              if (g_uc_extruder_last_move[2] == 0) disable_E2();
+              DISABLE_IDLE_E(2);
               #if EXTRUDERS > 3
-                if (g_uc_extruder_last_move[3] == 0) disable_E3();
+                DISABLE_IDLE_E(3);
                 #if EXTRUDERS > 4
-                  if (g_uc_extruder_last_move[4] == 0) disable_E4();
+                  DISABLE_IDLE_E(4);
                 #endif // EXTRUDERS > 4
               #endif // EXTRUDERS > 3
             #endif // EXTRUDERS > 2
@@ -908,12 +910,12 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
             case 2:
               enable_E2();
               g_uc_extruder_last_move[2] = (BLOCK_BUFFER_SIZE) * 2;
-              if (g_uc_extruder_last_move[0] == 0) disable_E0();
-              if (g_uc_extruder_last_move[1] == 0) disable_E1();
+              DISABLE_IDLE_E(0);
+              DISABLE_IDLE_E(1);
               #if EXTRUDERS > 3
-                if (g_uc_extruder_last_move[3] == 0) disable_E3();
+                DISABLE_IDLE_E(3);
                 #if EXTRUDERS > 4
-                  if (g_uc_extruder_last_move[4] == 0) disable_E4();
+                  DISABLE_IDLE_E(4);
                 #endif
               #endif
             break;
@@ -921,21 +923,21 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
               case 3:
                 enable_E3();
                 g_uc_extruder_last_move[3] = (BLOCK_BUFFER_SIZE) * 2;
-                if (g_uc_extruder_last_move[0] == 0) disable_E0();
-                if (g_uc_extruder_last_move[1] == 0) disable_E1();
-                if (g_uc_extruder_last_move[2] == 0) disable_E2();
+                DISABLE_IDLE_E(0);
+                DISABLE_IDLE_E(1);
+                DISABLE_IDLE_E(2);
                 #if EXTRUDERS > 4
-                  if (g_uc_extruder_last_move[4] == 0) disable_E4();
+                  DISABLE_IDLE_E(4);
                 #endif
               break;
               #if EXTRUDERS > 4
                 case 4:
                   enable_E4();
                   g_uc_extruder_last_move[4] = (BLOCK_BUFFER_SIZE) * 2;
-                  if (g_uc_extruder_last_move[0] == 0) disable_E0();
-                  if (g_uc_extruder_last_move[1] == 0) disable_E1();
-                  if (g_uc_extruder_last_move[2] == 0) disable_E2();
-                  if (g_uc_extruder_last_move[3] == 0) disable_E3();
+                  DISABLE_IDLE_E(0);
+                  DISABLE_IDLE_E(1);
+                  DISABLE_IDLE_E(2);
+                  DISABLE_IDLE_E(3);
                 break;
               #endif // EXTRUDERS > 4
             #endif // EXTRUDERS > 3