Fix Nextion and Color Mixing

MK/module/MK_Main.cpp

@@ -675,12 +675,12 @@ void setup() {
     setup_statled();
   #endif
 
-  #if ENABLED(MIXING_EXTRUDER_FEATURE) && MIXING_VIRTUAL_TOOLS > 1
+  #if ENABLED(COLOR_MIXING_EXTRUDER) && MIXING_VIRTUAL_TOOLS > 1
     // Initialize mixing to 100% color 1
     for (uint8_t i = 0; i < DRIVER_EXTRUDERS; i++) {
       mixing_factor[i] = (i == 0) ? 1 : 0;
     }
-    for (uint8_t t = 0; t < EXTRUDERS; t++) {
+    for (uint8_t t = 0; t < MIXING_VIRTUAL_TOOLS; t++) {
       for (uint8_t i = 0; i < DRIVER_EXTRUDERS; i++) {
         mixing_virtual_tool_mix[t][i] = mixing_factor[i];
       }
@@ -2555,7 +2555,7 @@ static void clean_up_after_endstop_move() {
     }
   }
 
-#endif //DELTA
+#endif // DELTA
 
 #if ENABLED(COLOR_MIXING_EXTRUDER)
   void normalize_mix() {

MK/module/motion/planner.cpp

@@ -614,7 +614,7 @@ float junction_deviation = 0.1;
   // For a mixing extruder, get steps for each
   #if ENABLED(COLOR_MIXING_EXTRUDER)
     for (uint8_t i = 0; i < DRIVER_EXTRUDERS; i++)
-      block->mix_event_count[i] = block->step_event_count / mixing_factor[i];
+      block->mix_event_count[i] = (mixing_factor[i] < 0.0001) ? 9999999999999999 : block->step_event_count / mixing_factor[i];
   #endif
 
   // Add update block variables for LASER BEAM control 

MK/module/motion/stepper.cpp

@@ -161,7 +161,9 @@ volatile signed char count_direction[NUM_AXIS] = { 1 };
   #define Z_APPLY_STEP(v,Q) Z_STEP_WRITE(v)
 #endif
 
-#define E_APPLY_STEP(v,Q) E_STEP_WRITE(v)
+#if DISABLED(COLOR_MIXING_EXTRUDER)
+  #define E_APPLY_STEP(v,Q) E_STEP_WRITE(v)
+#endif
 
 // intRes = intIn1 * intIn2 >> 16
 // uses:
@@ -611,13 +613,7 @@ FORCE_INLINE void trapezoid_generator_reset() {
     advance = current_block->initial_advance;
     final_advance = current_block->final_advance;
     // Do E steps + advance steps
-    #if ENABLED(COLOR_MIXING_EXTRUDER)
-      // Move mixing steppers proportionally
-      for (int8_t j = 0; j < DRIVER_EXTRUDERS; j++)
-        e_steps[j] += ((advance >> 8) - old_advance) * current_block->mix_steps[j] / current_block->step_event_count;
-    #else
     e_steps[current_block->active_driver] += ((advance >> 8) - old_advance);
-    #endif
     old_advance = advance >>8;
   #endif
   deceleration_time = 0;
@@ -759,7 +755,7 @@ ISR(TIMER1_COMPA_vect) {
           }
           for (uint8_t j = 0; j < DRIVER_EXTRUDERS; j++) {
             if (counter_m[j] > 0) {
-              counter_m[j] -= current_block->step_event_count;
+              counter_m[j] -= current_block->mix_event_count[j];
               En_STEP_WRITE(j, INVERT_E_STEP_PIN);
             }
           }

MK/module/nextion/Nextion_lcd.cpp

@@ -30,7 +30,7 @@
   NexPage Psdcard       = NexPage(4, 0, "sdcard");
   NexPage Psetup        = NexPage(5, 0, "setup");
   NexPage Pmove         = NexPage(6, 0, "move");
-  NexPage Pfeed         = NexPage(7, 0, "feed");
+  NexPage Pspeed        = NexPage(7, 0, "speed");
 
   // Page 0 Start
   NexTimer startimer    = NexTimer(0,  1, "tm0");  
@@ -61,7 +61,8 @@
   NexPicture NStop      = NexPicture(1, 25, "p8");
   NexVar SD             = NexVar(1, 26, "sd");
   NexVar RFID           = NexVar(1, 27, "rfid");
-  NexPicture Feedpic    = NexPicture(1, 18, "p9");
+  NexPicture Speedpic   = NexPicture(1, 28, "p9");
+  NexVar VSpeed         = NexVar(1, 29, "vspeed");
 
   // Page 2 Temp
   NexText set0          = NexText(2,  2,  "set0");
@@ -112,8 +113,7 @@
   NexText LedCoord6     = NexText(6, 19, "mcoord");
 
   // Page 7 Feed
-  NexVar  Feedrate      = NexVar(7, 1, "feedrate");
-  NexPicture Feedok     = NexPicture(7, 3,  "p0");
+  NexPicture SpeedOk    = NexPicture(7, 2,  "p0");
 
   NexTouch *nex_listen_list[] =
   {
@@ -125,7 +125,7 @@
     &MSD6,
     &MSetup,
     &Fanpic,
-    &Feedpic,
+    &Speedpic,
     &NPlay,
     &NStop,
     &hot0,
@@ -155,7 +155,7 @@
     &ZHome,
     &ZUp,
     &ZDown,
-    &Feedok,
+    &SpeedOk,
     NULL
   };
 
@@ -206,7 +206,7 @@
         Hotend21.setText("BED");
       #endif
 
-      Feedrate.setValue(100);
+      VSpeed.setValue(100);
 
       #if HAS(FAN)
         Fan.setValue(1);
@@ -433,9 +433,9 @@
       NextionPage = 5;
       Psetup.show();
     }
-    else if (ptr == &Feedpic) {
+    else if (ptr == &Speedpic) {
       NextionPage = 7;
-      Pfeed.show();
+      Pspeed.show();
     }
   }
 
@@ -523,7 +523,7 @@
 
       Menu.attachPop(setpagePopCallback,    &Menu);
       MSetup.attachPop(setpagePopCallback,  &MSetup);
-      Feedpic.attachPop(setpagePopCallback, &Feedpic);
+      Speedpic.attachPop(setpagePopCallback, &Speedpic);
       Fanpic.attachPop(setfanPopCallback,   &Fanpic);
       m11.attachPop(sethotPopCallback,      &m11);
       tup.attachPop(settempPopCallback,     &tup);
@@ -536,7 +536,7 @@
       ZHome.attachPop(setmovePopCallback);
       ZUp.attachPop(setmovePopCallback);
       ZDown.attachPop(setmovePopCallback);
-      Feedok.attachPop(ExitPopCallback);
+      SpeedOk.attachPop(ExitPopCallback);
 
       startimer.enable();
     }
@@ -610,8 +610,8 @@
         if (fanSpeed > 0) fantimer.enable();
         else fantimer.disable();
 
-        uint32_t* temp_feedrate;
-        Feedrate.getValue(temp_feedrate);
+        uint32_t temp_feedrate = 0;
+        VSpeed.getValue(&temp_feedrate);
         feedrate_multiplier = (int)temp_feedrate;
 
         #if HAS(TEMP_0)