MarlinFirmware · MagoKimbra · Jun 11, 2014
diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
@@ -87,6 +87,11 @@
 // This defines the number of extruders
 #define EXTRUDERS 1
 
+// Setting for one hotend and more extruder, firmware by MagoKimbra
+#if EXTRUDERS > 1
+  #define SINGLENOZZLE //This is used for singlenozzled multiple extrusion configuration
+#endif
+
 //// The following define selects which power supply you have. Please choose the one that matches your setup
 // 1 = ATX
 // 2 = X-Box 360 203Watts (the blue wire connected to PS_ON and the red wire to VCC)
@@ -137,12 +142,17 @@
 #define TEMP_SENSOR_0 -1
 #define TEMP_SENSOR_1 -1
 #define TEMP_SENSOR_2 0
-#define TEMP_SENSOR_BED 0
+#define TEMP_SENSOR_3 0
+#define TEMP_SENSOR_BED 1
 
 // This makes temp sensor 1 a redundant sensor for sensor 0. If the temperatures difference between these sensors is to high the print will be aborted.
 //#define TEMP_SENSOR_1_AS_REDUNDANT
 #define MAX_REDUNDANT_TEMP_SENSOR_DIFF 10
 
+#ifdef SINGLENOZZLE
+  #undef TEMP_SENSOR_1_AS_REDUNDANT
+#endif
+
 // Actual temperature must be close to target for this long before M109 returns success
 #define TEMP_RESIDENCY_TIME 10  // (seconds)
 #define TEMP_HYSTERESIS 3       // (degC) range of +/- temperatures considered "close" to the target one
@@ -154,6 +164,7 @@
 #define HEATER_0_MINTEMP 5
 #define HEATER_1_MINTEMP 5
 #define HEATER_2_MINTEMP 5
+#define HEATER_3_MINTEMP 5
 #define BED_MINTEMP 5
 
 // When temperature exceeds max temp, your heater will be switched off.
@@ -162,6 +173,7 @@
 #define HEATER_0_MAXTEMP 275
 #define HEATER_1_MAXTEMP 275
 #define HEATER_2_MAXTEMP 275
+#define HEATER_3_MAXTEMP 275
 #define BED_MAXTEMP 150
 
 // If your bed has low resistance e.g. .6 ohm and throws the fuse you can duty cycle it to reduce the
@@ -314,6 +326,7 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
 #define INVERT_E0_DIR false   // for direct drive extruder v9 set to true, for geared extruder set to false
 #define INVERT_E1_DIR false    // for direct drive extruder v9 set to true, for geared extruder set to false
 #define INVERT_E2_DIR false   // for direct drive extruder v9 set to true, for geared extruder set to false
+#define INVERT_E3_DIR false   // for direct drive extruder v9 set to true, for geared extruder set to false
 
 // ENDSTOP SETTINGS:
 // Sets direction of endstops when homing; 1=MAX, -1=MIN

diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
@@ -445,6 +445,10 @@ const unsigned int dropsegments=5; //everything with less than this number of st
   #error "You cannot use HEATERS_PARALLEL if EXTRUDERS > 1"
 #endif
 
+#if defined SINGLENOZZLE && defined TEMP_SENSOR_1_AS_REDUNDANT
+  #error "You cannot use TEMP_SENSOR_1_AS_REDUNDANT if SINGLENOZZLE"
+#endif
+
 #if TEMP_SENSOR_0 > 0
   #define THERMISTORHEATER_0 TEMP_SENSOR_0
   #define HEATER_0_USES_THERMISTOR
@@ -457,6 +461,10 @@ const unsigned int dropsegments=5; //everything with less than this number of st
   #define THERMISTORHEATER_2 TEMP_SENSOR_2
   #define HEATER_2_USES_THERMISTOR
 #endif
+#if TEMP_SENSOR_3 > 0
+  #define THERMISTORHEATER_3 TEMP_SENSOR_3
+  #define HEATER_3_USES_THERMISTOR
+#endif
 #if TEMP_SENSOR_BED > 0
   #define THERMISTORBED TEMP_SENSOR_BED
   #define BED_USES_THERMISTOR
@@ -470,6 +478,9 @@ const unsigned int dropsegments=5; //everything with less than this number of st
 #if TEMP_SENSOR_2 == -1
   #define HEATER_2_USES_AD595
 #endif
+#if TEMP_SENSOR_3 == -1
+  #define HEATER_3_USES_AD595
+#endif
 #if TEMP_SENSOR_BED == -1
   #define BED_USES_AD595
 #endif
@@ -488,6 +499,10 @@ const unsigned int dropsegments=5; //everything with less than this number of st
   #undef HEATER_2_MINTEMP
   #undef HEATER_2_MAXTEMP
 #endif
+#if TEMP_SENSOR_3 == 0
+  #undef HEATER_3_MINTEMP
+  #undef HEATER_3_MAXTEMP
+#endif
 #if TEMP_SENSOR_BED == 0
   #undef BED_MINTEMP
   #undef BED_MAXTEMP

diff --git a/Marlin/Marlin.h b/Marlin/Marlin.h
@@ -166,6 +166,15 @@ void manage_inactivity();
   #define disable_e2() /* nothing */
 #endif
 
+#if (EXTRUDERS > 3) && defined(E3_ENABLE_PIN) && (E3_ENABLE_PIN > -1)
+  #define enable_e3() WRITE(E3_ENABLE_PIN, E_ENABLE_ON)
+  #define disable_e3() WRITE(E3_ENABLE_PIN,!E_ENABLE_ON)
+#else
+  #define enable_e3()  /* nothing */
+  #define disable_e3() /* nothing */
+#endif
+
+
 
 enum AxisEnum {X_AXIS=0, Y_AXIS=1, Z_AXIS=2, E_AXIS=3};
 

diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
@@ -196,6 +196,9 @@ int extruder_multiply[EXTRUDERS] = {100
     , 100
     #if EXTRUDERS > 2
       , 100
+	  #if EXTRUDERS > 3
+      	, 100
+	  #endif
     #endif
   #endif
 };
@@ -204,6 +207,9 @@ float volumetric_multiplier[EXTRUDERS] = {1.0
     , 1.0
     #if EXTRUDERS > 2
       , 1.0
+      #if EXTRUDERS > 3
+        , 1.0
+      #endif
     #endif
   #endif
 };
@@ -219,16 +225,18 @@ float zprobe_zoffset;
 
 // Extruder offset
 #if EXTRUDERS > 1
-#ifndef DUAL_X_CARRIAGE
-  #define NUM_EXTRUDER_OFFSETS 2 // only in XY plane
-#else
-  #define NUM_EXTRUDER_OFFSETS 3 // supports offsets in XYZ plane
-#endif
-float extruder_offset[NUM_EXTRUDER_OFFSETS][EXTRUDERS] = {
-#if defined(EXTRUDER_OFFSET_X) && defined(EXTRUDER_OFFSET_Y)
-  EXTRUDER_OFFSET_X, EXTRUDER_OFFSET_Y
-#endif
-};
+  #ifndef SINGLENOZZLE
+    #ifndef DUAL_X_CARRIAGE
+      #define NUM_EXTRUDER_OFFSETS 2 // only in XY plane
+    #else
+      #define NUM_EXTRUDER_OFFSETS 3 // supports offsets in XYZ plane
+    #endif
+    float extruder_offset[NUM_EXTRUDER_OFFSETS][EXTRUDERS] = {
+    #if defined(EXTRUDER_OFFSET_X) && defined(EXTRUDER_OFFSET_Y)
+      EXTRUDER_OFFSET_X, EXTRUDER_OFFSET_Y
+    #endif
+    };
+  #endif
 #endif
 uint8_t active_extruder = 0;
 int fanSpeed=0;
@@ -1829,7 +1837,11 @@ void process_commands()
       if(setTargetedHotend(104)){
         break;
       }
-      if (code_seen('S')) setTargetHotend(code_value(), tmp_extruder);
+      #ifndef SINGLENOZZLE
+        if (code_seen('S')) setTargetHotend(code_value(), tmp_extruder);
+      #else
+        if (code_seen('S')) setTargetHotend(code_value(), 0);
+      #endif
 #ifdef DUAL_X_CARRIAGE
       if (dual_x_carriage_mode == DXC_DUPLICATION_MODE && tmp_extruder == 0)
         setTargetHotend1(code_value() == 0.0 ? 0.0 : code_value() + duplicate_extruder_temp_offset);
@@ -1857,7 +1869,13 @@ void process_commands()
           SERIAL_PROTOCOLPGM(" /");
           SERIAL_PROTOCOL_F(degTargetBed(),1);
         #endif //TEMP_BED_PIN
-        for (int8_t cur_extruder = 0; cur_extruder < EXTRUDERS; ++cur_extruder) {
+
+        #ifndef SINGLENOZZLE
+          for (int8_t cur_extruder = 0; cur_extruder < EXTRUDERS; ++cur_extruder) {
+        #else
+          for (int8_t cur_extruder = 0; cur_extruder < 1; ++cur_extruder) {
+        #endif
+
           SERIAL_PROTOCOLPGM(" T");
           SERIAL_PROTOCOL(cur_extruder);
           SERIAL_PROTOCOLPGM(":");
@@ -1893,7 +1911,11 @@ void process_commands()
             SERIAL_PROTOCOLPGM("C->");
             SERIAL_PROTOCOL_F(rawBedTemp()/OVERSAMPLENR,0);
           #endif
-          for (int8_t cur_extruder = 0; cur_extruder < EXTRUDERS; ++cur_extruder) {
+          #ifndef SINGLENOZZLE
+            for (int8_t cur_extruder = 0; cur_extruder < EXTRUDERS; ++cur_extruder) {
+          #else
+            for (int8_t cur_extruder = 0; cur_extruder < 1; ++cur_extruder) {
+          #endif
             SERIAL_PROTOCOLPGM("  T");
             SERIAL_PROTOCOL(cur_extruder);
             SERIAL_PROTOCOLPGM(":");
@@ -1916,14 +1938,22 @@ void process_commands()
         autotemp_enabled=false;
       #endif
       if (code_seen('S')) {
-        setTargetHotend(code_value(), tmp_extruder);
+        #ifndef SINGLENOZZLE
+          setTargetHotend(code_value(), tmp_extruder);
+        #else
+          setTargetHotend(code_value(), 0);
+        #endif
 #ifdef DUAL_X_CARRIAGE
         if (dual_x_carriage_mode == DXC_DUPLICATION_MODE && tmp_extruder == 0)
           setTargetHotend1(code_value() == 0.0 ? 0.0 : code_value() + duplicate_extruder_temp_offset);
 #endif
         CooldownNoWait = true;
       } else if (code_seen('R')) {
-        setTargetHotend(code_value(), tmp_extruder);
+        #ifndef SINGLENOZZLE
+          setTargetHotend(code_value(), tmp_extruder);
+        #else
+          setTargetHotend(code_value(), 0);
+        #endif
 #ifdef DUAL_X_CARRIAGE
         if (dual_x_carriage_mode == DXC_DUPLICATION_MODE && tmp_extruder == 0)
           setTargetHotend1(code_value() == 0.0 ? 0.0 : code_value() + duplicate_extruder_temp_offset);
@@ -1944,8 +1974,12 @@ void process_commands()
       codenum = millis();
 
       /* See if we are heating up or cooling down */
-      target_direction = isHeatingHotend(tmp_extruder); // true if heating, false if cooling
-
+      #ifndef SINGLENOZZLE
+        target_direction = isHeatingHotend(tmp_extruder); // true if heating, false if cooling
+      #else
+        target_direction = isHeatingHotend(0); // true if heating, false if cooling
+      #endif
+
       #ifdef TEMP_RESIDENCY_TIME
         long residencyStart;
         residencyStart = -1;
@@ -1954,14 +1988,26 @@ void process_commands()
         while((residencyStart == -1) ||
               (residencyStart >= 0 && (((unsigned int) (millis() - residencyStart)) < (TEMP_RESIDENCY_TIME * 1000UL))) ) {
       #else
-        while ( target_direction ? (isHeatingHotend(tmp_extruder)) : (isCoolingHotend(tmp_extruder)&&(CooldownNoWait==false)) ) {
+        #ifndef SINGLENOZZLE
+          while ( target_direction ? (isHeatingHotend(tmp_extruder)) : (isCoolingHotend(tmp_extruder)&&(CooldownNoWait==false)) ) {
+        #else
+          while ( target_direction ? (isHeatingHotend(0)) : (isCoolingHotend(0)&&(CooldownNoWait==false)) ) {
+        #endif
       #endif //TEMP_RESIDENCY_TIME
           if( (millis() - codenum) > 1000UL )
           { //Print Temp Reading and remaining time every 1 second while heating up/cooling down
             SERIAL_PROTOCOLPGM("T:");
-            SERIAL_PROTOCOL_F(degHotend(tmp_extruder),1);
+            #ifndef SINGLENOZZLE
+              SERIAL_PROTOCOL_F(degHotend(tmp_extruder),1);
+            #else
+              SERIAL_PROTOCOL_F(degHotend(0),1);
+            #endif
             SERIAL_PROTOCOLPGM(" E:");
-            SERIAL_PROTOCOL((int)tmp_extruder);
+            #ifndef SINGLENOZZLE
+              SERIAL_PROTOCOL((int)tmp_extruder);
+            #else
+              SERIAL_PROTOCOL(0); //There's only one nozzle
+            #endif
             #ifdef TEMP_RESIDENCY_TIME
               SERIAL_PROTOCOLPGM(" W:");
               if(residencyStart > -1)
@@ -1984,12 +2030,21 @@ void process_commands()
         #ifdef TEMP_RESIDENCY_TIME
             /* start/restart the TEMP_RESIDENCY_TIME timer whenever we reach target temp for the first time
               or when current temp falls outside the hysteresis after target temp was reached */
-          if ((residencyStart == -1 &&  target_direction && (degHotend(tmp_extruder) >= (degTargetHotend(tmp_extruder)-TEMP_WINDOW))) ||
-              (residencyStart == -1 && !target_direction && (degHotend(tmp_extruder) <= (degTargetHotend(tmp_extruder)+TEMP_WINDOW))) ||
-              (residencyStart > -1 && labs(degHotend(tmp_extruder) - degTargetHotend(tmp_extruder)) > TEMP_HYSTERESIS) )
-          {
-            residencyStart = millis();
-          }
+          #ifndef SINGLENOZZLE
+            if ((residencyStart == -1 &&  target_direction && (degHotend(tmp_extruder) >= (degTargetHotend(tmp_extruder)-TEMP_WINDOW))) ||
+                (residencyStart == -1 && !target_direction && (degHotend(tmp_extruder) <= (degTargetHotend(tmp_extruder)+TEMP_WINDOW))) ||
+                (residencyStart > -1 && labs(degHotend(tmp_extruder) - degTargetHotend(tmp_extruder)) > TEMP_HYSTERESIS) )
+            {
+              residencyStart = millis();
+            }
+          #else
+            if ((residencyStart == -1 &&  target_direction && (degHotend(0) >= (degTargetHotend(0)-TEMP_WINDOW))) ||
+                (residencyStart == -1 && !target_direction && (degHotend(0) <= (degTargetHotend(0)+TEMP_WINDOW))) ||
+                (residencyStart > -1 && labs(degHotend(0) - degTargetHotend(0)) > TEMP_HYSTERESIS) )
+            {
+              residencyStart = millis();
+            }
+          #endif
         #endif //TEMP_RESIDENCY_TIME
         }
         LCD_MESSAGEPGM(MSG_HEATING_COMPLETE);
@@ -2403,7 +2458,7 @@ void process_commands()
 
     }break;
     #endif // FWRETRACT
-    #if EXTRUDERS > 1
+    #if EXTRUDERS > 1 && !defined(SINGLENOZZLE)
     case 218: // M218 - set hotend offset (in mm), T<extruder_number> X<offset_on_X> Y<offset_on_Y>
     {
       if(setTargetedHotend(218)){
@@ -2438,7 +2493,7 @@ void process_commands()
       }
       SERIAL_ECHOLN("");
     }break;
-    #endif
+    #endif //EXTRUDERS and SINGLENOZZLE
     case 220: // M220 S<factor in percent>- set speed factor override percentage
     {
       if(code_seen('S'))
@@ -3096,12 +3151,14 @@ void process_commands()
         }
       #else
         // Offset extruder (only by XY)
+      #ifndef SINGLENOZZLE
         int i;
         for(i = 0; i < 2; i++) {
            current_position[i] = current_position[i] -
                                  extruder_offset[i][active_extruder] +
                                  extruder_offset[i][tmp_extruder];
         }
+      #endif
         // Set the new active extruder and position
         active_extruder = tmp_extruder;
       #endif //else DUAL_X_CARRIAGE

diff --git a/Marlin/pins.h b/Marlin/pins.h
@@ -2738,7 +2738,12 @@ DaveX plan for Teensylu/printrboard-type pinouts (ref teensylu & sprinter) for a
 
 #endif
 
-
+#ifndef HEATER_3_PIN
+  #define HEATER_3_PIN -1
+#endif
+#ifndef TEMP_3_PIN
+  #define TEMP_3_PIN -1
+#endif
 
 #ifndef KNOWN_BOARD
 #error Unknown MOTHERBOARD value in configuration.h
@@ -2756,6 +2761,11 @@ DaveX plan for Teensylu/printrboard-type pinouts (ref teensylu & sprinter) for a
 #else
   #define _E2_PINS
 #endif
+#if EXTRUDERS > 3
+  #define _E3_PINS E3_STEP_PIN, E3_DIR_PIN, E3_ENABLE_PIN, HEATER_3_PIN,
+#else
+  #define _E3_PINS
+#endif
 
 #ifdef X_STOP_PIN
   #if X_HOME_DIR < 0
@@ -2801,7 +2811,7 @@ DaveX plan for Teensylu/printrboard-type pinouts (ref teensylu & sprinter) for a
 
 #define SENSITIVE_PINS {0, 1, X_STEP_PIN, X_DIR_PIN, X_ENABLE_PIN, X_MIN_PIN, X_MAX_PIN, Y_STEP_PIN, Y_DIR_PIN, Y_ENABLE_PIN, Y_MIN_PIN, Y_MAX_PIN, Z_STEP_PIN, Z_DIR_PIN, Z_ENABLE_PIN, Z_MIN_PIN, Z_MAX_PIN, PS_ON_PIN, \
                         HEATER_BED_PIN, FAN_PIN,                  \
-                        _E0_PINS _E1_PINS _E2_PINS             \
-                        analogInputToDigitalPin(TEMP_0_PIN), analogInputToDigitalPin(TEMP_1_PIN), analogInputToDigitalPin(TEMP_2_PIN), analogInputToDigitalPin(TEMP_BED_PIN) }
+                        _E0_PINS _E1_PINS _E2_PINS _E3_PINS           \
+                        analogInputToDigitalPin(TEMP_0_PIN), analogInputToDigitalPin(TEMP_1_PIN), analogInputToDigitalPin(TEMP_2_PIN), analogInputToDigitalPin(TEMP_3_PIN), analogInputToDigitalPin(TEMP_BED_PIN) }
 #endif
 
diff --git a/Marlin/planner.cpp b/Marlin/planner.cpp
@@ -664,16 +664,18 @@ block->steps_y = labs((target[X_AXIS]-position[X_AXIS]) - (target[Y_AXIS]-positi
     {
       switch(extruder)
       {
-        case 0: enable_e0(); disable_e1(); disable_e2(); break;
-        case 1: disable_e0(); enable_e1(); disable_e2(); break;
-        case 2: disable_e0(); disable_e1(); enable_e2(); break;
+        case 0: enable_e0(); disable_e1(); disable_e2(); disable_e3(); break;
+        case 1: disable_e0(); enable_e1(); disable_e2(); disable_e3(); break;
+        case 2: disable_e0(); disable_e1(); enable_e2(); disable_e3(); break;
+		case 3: disable_e0(); disable_e1(); disable_e2(); enable_e3(); break;
       }
     }
     else //enable all
     {
       enable_e0();
       enable_e1();
-      enable_e2(); 
+      enable_e2();
+	  enable_e3();
     }
   }