Compiling errors with 4 Extruders defined

Here were a few changes that I had to make/add lines for the 4th hotend.
A compiling problem in the Temperature.cpp and missing lines in
configuration.h and configuration_adv.h. I added these lines in all of
the example configs too.

Marlin/Configuration.h

@@ -122,6 +122,7 @@ Here are some standard links for getting your machine calibrated:
 #define TEMP_SENSOR_0 -1
 #define TEMP_SENSOR_1 -1
 #define TEMP_SENSOR_2 0
+#define TEMP_SENSOR_3 0
 #define TEMP_SENSOR_BED 0
 
 // 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.
@@ -139,6 +140,7 @@ Here are some standard links for getting your machine calibrated:
 #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.
@@ -147,6 +149,7 @@ Here are some standard links for getting your machine calibrated:
 #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

Marlin/example_configurations/Hephestos/Configuration.h

@@ -1,4 +1,4 @@
-#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
 #include "boards.h"
@@ -122,6 +122,7 @@ Here are some standard links for getting your machine calibrated:
 #define TEMP_SENSOR_0 1
 #define TEMP_SENSOR_1 0
 #define TEMP_SENSOR_2 0
+#define TEMP_SENSOR_3 0
 #define TEMP_SENSOR_BED 0
 
 // 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.
@@ -139,6 +140,7 @@ Here are some standard links for getting your machine calibrated:
 #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.
@@ -147,6 +149,7 @@ Here are some standard links for getting your machine calibrated:
 #define HEATER_0_MAXTEMP 260
 #define HEATER_1_MAXTEMP 260
 #define HEATER_2_MAXTEMP 260
+#define HEATER_3_MAXTEMP 260
 #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

Marlin/example_configurations/K8200/Configuration.h

@@ -1,4 +1,4 @@
-#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
 #include "boards.h"
@@ -124,6 +124,7 @@ Here are some standard links for getting your machine calibrated:
 #define TEMP_SENSOR_0 5
 #define TEMP_SENSOR_1 0
 #define TEMP_SENSOR_2 0
+#define TEMP_SENSOR_3 0
 #define TEMP_SENSOR_BED 5
 
 // 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.
@@ -141,6 +142,7 @@ Here are some standard links for getting your machine calibrated:
 #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.
@@ -149,6 +151,7 @@ Here are some standard links for getting your machine calibrated:
 #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

Marlin/example_configurations/SCARA/Configuration.h

@@ -1,4 +1,4 @@
-#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
 #include "boards.h"
@@ -142,6 +142,7 @@ Here are some standard links for getting your machine calibrated:
 #define TEMP_SENSOR_0 1
 #define TEMP_SENSOR_1 0
 #define TEMP_SENSOR_2 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.
@@ -159,6 +160,7 @@ Here are some standard links for getting your machine calibrated:
 #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.
@@ -167,6 +169,7 @@ Here are some standard links for getting your machine calibrated:
 #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

Marlin/example_configurations/SCARA/Configuration_adv.h

@@ -78,6 +78,7 @@
 #define EXTRUDER_0_AUTO_FAN_PIN   -1
 #define EXTRUDER_1_AUTO_FAN_PIN   -1
 #define EXTRUDER_2_AUTO_FAN_PIN   -1
+#define EXTRUDER_3_AUTO_FAN_PIN   -1
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
@@ -478,6 +479,10 @@ 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
@@ -491,6 +496,9 @@ 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
@@ -509,6 +517,10 @@ 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

Marlin/example_configurations/WITBOX/Configuration.h

@@ -1,4 +1,4 @@
-#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
 #include "boards.h"
@@ -125,6 +125,7 @@ Here are some standard links for getting your machine calibrated:
 #define TEMP_SENSOR_0 1
 #define TEMP_SENSOR_1 0
 #define TEMP_SENSOR_2 0
+#define TEMP_SENSOR_3 0
 #define TEMP_SENSOR_BED 0
 
 // 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.
@@ -142,6 +143,7 @@ Here are some standard links for getting your machine calibrated:
 #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.
@@ -150,6 +152,7 @@ Here are some standard links for getting your machine calibrated:
 #define HEATER_0_MAXTEMP 260
 #define HEATER_1_MAXTEMP 260
 #define HEATER_2_MAXTEMP 260
+#define HEATER_3_MAXTEMP 260
 #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

Marlin/example_configurations/delta/Configuration.h

@@ -1,4 +1,4 @@
-#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
 #include "boards.h"
@@ -147,6 +147,7 @@ Here are some standard links for getting your machine calibrated:
 #define TEMP_SENSOR_0 -1
 #define TEMP_SENSOR_1 -1
 #define TEMP_SENSOR_2 0
+#define TEMP_SENSOR_3 0
 #define TEMP_SENSOR_BED 0
 
 // 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.
@@ -164,6 +165,7 @@ Here are some standard links for getting your machine calibrated:
 #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.
@@ -172,6 +174,7 @@ Here are some standard links for getting your machine calibrated:
 #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

Marlin/example_configurations/delta/Configuration_adv.h

@@ -78,6 +78,7 @@
 #define EXTRUDER_0_AUTO_FAN_PIN   -1
 #define EXTRUDER_1_AUTO_FAN_PIN   -1
 #define EXTRUDER_2_AUTO_FAN_PIN   -1
+#define EXTRUDER_3_AUTO_FAN_PIN   -1
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
@@ -472,6 +473,10 @@ 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
@@ -485,6 +490,9 @@ 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
@@ -503,6 +511,10 @@ 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

Marlin/example_configurations/makibox/Configuration.h

@@ -1,4 +1,4 @@
-#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
 #include "boards.h"
@@ -127,6 +127,7 @@ Here are some standard links for getting your machine calibrated:
 #define TEMP_SENSOR_0 1
 #define TEMP_SENSOR_1 0
 #define TEMP_SENSOR_2 0
+#define TEMP_SENSOR_3 0
 #define TEMP_SENSOR_BED 12
 
 // 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.
@@ -144,6 +145,7 @@ Here are some standard links for getting your machine calibrated:
 #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.
@@ -152,6 +154,7 @@ Here are some standard links for getting your machine calibrated:
 #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

Marlin/example_configurations/makibox/Configuration_adv.h

@@ -78,6 +78,7 @@
 #define EXTRUDER_0_AUTO_FAN_PIN   -1
 #define EXTRUDER_1_AUTO_FAN_PIN   -1
 #define EXTRUDER_2_AUTO_FAN_PIN   -1
+#define EXTRUDER_3_AUTO_FAN_PIN   -1
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
@@ -469,6 +470,10 @@ 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
@@ -482,6 +487,9 @@ 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
@@ -500,6 +508,10 @@ 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

Marlin/example_configurations/tvrrug/Round2/Configuration.h

@@ -1,4 +1,4 @@
-#ifndef CONFIGURATION_H
+#ifndef CONFIGURATION_H
 #define CONFIGURATION_H
 
 #include "boards.h"
@@ -126,6 +126,7 @@ Here are some standard links for getting your machine calibrated:
 #define TEMP_SENSOR_0 5
 #define TEMP_SENSOR_1 0
 #define TEMP_SENSOR_2 0
+#define TEMP_SENSOR_3 0
 #define TEMP_SENSOR_BED 5
 
 // 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.
@@ -143,6 +144,7 @@ Here are some standard links for getting your machine calibrated:
 #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.
@@ -151,6 +153,7 @@ Here are some standard links for getting your machine calibrated:
 #define HEATER_0_MAXTEMP 275
 #define HEATER_1_MAXTEMP 275
 #define HEATER_2_MAXTEMP 275
+#define HEATER_3_MAXTEMP 275
 #define BED_MAXTEMP 150
 
 #define CONFIG_STEPPERS_TOSHIBA	1

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

@@ -78,6 +78,7 @@
 #define EXTRUDER_0_AUTO_FAN_PIN   -1
 #define EXTRUDER_1_AUTO_FAN_PIN   -1
 #define EXTRUDER_2_AUTO_FAN_PIN   -1
+#define EXTRUDER_3_AUTO_FAN_PIN   -1
 #define EXTRUDER_AUTO_FAN_TEMPERATURE 50
 #define EXTRUDER_AUTO_FAN_SPEED   255  // == full speed
 
@@ -472,6 +473,10 @@ 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
@@ -485,6 +490,9 @@ 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
@@ -503,6 +511,10 @@ 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

Marlin/temperature.cpp

@@ -465,8 +465,7 @@ void checkExtruderAutoFans()
   #endif
   #if defined(EXTRUDER_3_AUTO_FAN_PIN) && EXTRUDER_3_AUTO_FAN_PIN > -1
     if (EXTRUDER_3_AUTO_FAN_PIN != EXTRUDER_0_AUTO_FAN_PIN 
-        && EXTRUDER_3_AUTO_FAN_PIN != EXTRUDER_1_AUTO_FAN_PIN)
-        && EXTRUDER_3_AUTO_FAN_PIN != EXTRUDER_0_AUTO_FAN_PIN)
+        && EXTRUDER_3_AUTO_FAN_PIN != EXTRUDER_2_AUTO_FAN_PIN)
       setExtruderAutoFanState(EXTRUDER_3_AUTO_FAN_PIN, (fanState & 8) != 0);
   #endif
 }