Option to disable all volumetric extrusion

Marlin/Configuration_adv.h

 #define EXTENDED_CAPABILITIES_REPORT
 
 /**
- * Volumetric extrusion default state
- * Activate to make volumetric extrusion the default method,
- * with DEFAULT_NOMINAL_FILAMENT_DIA as the default diameter.
- *
- * M200 D0 to disable, M200 Dn to set a new diameter.
+ * Disable all Volumetric extrusion options
  */
-//#define VOLUMETRIC_DEFAULT_ON
+//#define NO_VOLUMETRICS
+
+#if DISABLED(NO_VOLUMETRICS)
+  /**
+   * Volumetric extrusion default state
+   * Activate to make volumetric extrusion the default method,
+   * with DEFAULT_NOMINAL_FILAMENT_DIA as the default diameter.
+   *
+   * M200 D0 to disable, M200 Dn to set a new diameter.
+   */
+  //#define VOLUMETRIC_DEFAULT_ON
+#endif
 
 /**
  * Enable this option for a leaner build of Marlin that removes all

Marlin/src/gcode/config/M200-M205.cpp

 #include "../../Marlin.h"
 #include "../../module/planner.h"
 
-/**
- * M200: Set filament diameter and set E axis units to cubic units
- *
- *    T<extruder> - Optional extruder number. Current extruder if omitted.
- *    D<linear> - Diameter of the filament. Use "D0" to switch back to linear units on the E axis.
- */
-void GcodeSuite::M200() {
+#if DISABLED(NO_VOLUMETRICS)
+
+  /**
+   * M200: Set filament diameter and set E axis units to cubic units
+   *
+   *    T<extruder> - Optional extruder number. Current extruder if omitted.
+   *    D<linear> - Diameter of the filament. Use "D0" to switch back to linear units on the E axis.
+   */
+  void GcodeSuite::M200() {
 
-  if (get_target_extruder_from_command()) return;
+    if (get_target_extruder_from_command()) return;
 
-  if (parser.seen('D')) {
-    // setting any extruder filament size disables volumetric on the assumption that
-    // slicers either generate in extruder values as cubic mm or as as filament feeds
-    // for all extruders
-    if ( (parser.volumetric_enabled = (parser.value_linear_units() != 0.0)) )
-      planner.set_filament_size(target_extruder, parser.value_linear_units());
+    if (parser.seen('D')) {
+      // setting any extruder filament size disables volumetric on the assumption that
+      // slicers either generate in extruder values as cubic mm or as as filament feeds
+      // for all extruders
+      if ( (parser.volumetric_enabled = (parser.value_linear_units() != 0.0)) )
+        planner.set_filament_size(target_extruder, parser.value_linear_units());
+    }
+    planner.calculate_volumetric_multipliers();
   }
-  planner.calculate_volumetric_multipliers();
-}
+
+#endif // !NO_VOLUMETRICS
 
 /**
  * M201: Set max acceleration in units/s^2 for print moves (M201 X1000 Y1000)

Marlin/src/gcode/gcode.cpp

         #endif
       #endif
 
-      case 200: // M200: Set filament diameter, E to cubic units
-        M200();
-        break;
+      #if DISABLED(NO_VOLUMETRICS)
+        case 200: M200(); break;  // M200: Set filament diameter, E to cubic units
+      #endif
 
       case 201: M201(); break;  // M201: Set max acceleration for print moves (units/s^2)
 

Marlin/src/inc/SanityCheck.h

  */
 #if ENABLED(DISABLE_X) || ENABLED(DISABLE_Y) || ENABLED(DISABLE_Z)
   #if ENABLED(HOME_AFTER_DEACTIVATE) || ENABLED(Z_SAFE_HOMING)
-    #error "DISABLE_[XYZ] not compatible with HOME_AFTER_DEACTIVATE or Z_SAFE_HOMING."
+    #error "DISABLE_[XYZ] is not compatible with HOME_AFTER_DEACTIVATE or Z_SAFE_HOMING."
   #endif
 #endif // DISABLE_[XYZ]
 
 /**
  * Filament Width Sensor
  */
-#if ENABLED(FILAMENT_WIDTH_SENSOR) && !HAS_FILAMENT_WIDTH_SENSOR
-  #error "FILAMENT_WIDTH_SENSOR requires a FILWIDTH_PIN to be defined."
+#if ENABLED(FILAMENT_WIDTH_SENSOR)
+  #if !HAS_FILAMENT_WIDTH_SENSOR
+    #error "FILAMENT_WIDTH_SENSOR requires a FILWIDTH_PIN to be defined."
+  #elif ENABLED(NO_VOLUMETRICS)
+    #error "FILAMENT_WIDTH_SENSOR requires NO_VOLUMETRICS to be disabled."
+  #endif
 #endif
 
 /**

Marlin/src/lcd/ultralcd.cpp

       MENU_ITEM_EDIT(float3, MSG_ADVANCE_K, &planner.extruder_advance_k, 0, 999);
     #endif
 
-    MENU_ITEM_EDIT_CALLBACK(bool, MSG_VOLUMETRIC_ENABLED, &parser.volumetric_enabled, planner.calculate_volumetric_multipliers);
-
-    if (parser.volumetric_enabled) {
-      #if EXTRUDERS == 1
-        MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM, &planner.filament_size[0], 1.5, 3.25, planner.calculate_volumetric_multipliers);
-      #else // EXTRUDERS > 1
-        MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM, &planner.filament_size[active_extruder], 1.5, 3.25, planner.calculate_volumetric_multipliers);
-        MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E1, &planner.filament_size[0], 1.5, 3.25, planner.calculate_volumetric_multipliers);
-        MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E2, &planner.filament_size[1], 1.5, 3.25, planner.calculate_volumetric_multipliers);
-        #if EXTRUDERS > 2
-          MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E3, &planner.filament_size[2], 1.5, 3.25, planner.calculate_volumetric_multipliers);
-          #if EXTRUDERS > 3
-            MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E4, &planner.filament_size[3], 1.5, 3.25, planner.calculate_volumetric_multipliers);
-            #if EXTRUDERS > 4
-              MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E5, &planner.filament_size[4], 1.5, 3.25, planner.calculate_volumetric_multipliers);
-            #endif // EXTRUDERS > 4
-          #endif // EXTRUDERS > 3
-        #endif // EXTRUDERS > 2
-      #endif // EXTRUDERS > 1
-    }
+    #if DISABLED(NO_VOLUMETRICS)
+
+      MENU_ITEM_EDIT_CALLBACK(bool, MSG_VOLUMETRIC_ENABLED, &parser.volumetric_enabled, planner.calculate_volumetric_multipliers);
+
+      if (parser.volumetric_enabled) {
+        #if EXTRUDERS == 1
+          MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM, &planner.filament_size[0], 1.5, 3.25, planner.calculate_volumetric_multipliers);
+        #else // EXTRUDERS > 1
+          MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM, &planner.filament_size[active_extruder], 1.5, 3.25, planner.calculate_volumetric_multipliers);
+          MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E1, &planner.filament_size[0], 1.5, 3.25, planner.calculate_volumetric_multipliers);
+          MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E2, &planner.filament_size[1], 1.5, 3.25, planner.calculate_volumetric_multipliers);
+          #if EXTRUDERS > 2
+            MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E3, &planner.filament_size[2], 1.5, 3.25, planner.calculate_volumetric_multipliers);
+            #if EXTRUDERS > 3
+              MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E4, &planner.filament_size[3], 1.5, 3.25, planner.calculate_volumetric_multipliers);
+              #if EXTRUDERS > 4
+                MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E5, &planner.filament_size[4], 1.5, 3.25, planner.calculate_volumetric_multipliers);
+              #endif // EXTRUDERS > 4
+            #endif // EXTRUDERS > 3
+          #endif // EXTRUDERS > 2
+        #endif // EXTRUDERS > 1
+      }
+
+    #endif // !NO_VOLUMETRICS
 
     END_MENU();
   }

Marlin/src/module/configuration_store.cpp

     thermalManager.updatePID();
   #endif
 
-  planner.calculate_volumetric_multipliers();
+  #if DISABLED(NO_VOLUMETRICS)
+    planner.calculate_volumetric_multipliers();
+  #endif
 
   #if HAS_HOME_OFFSET || ENABLED(DUAL_X_CARRIAGE)
     // Software endstops depend on home_offset
       EEPROM_WRITE(fwretract.swap_retract_recover_feedrate_mm_s);
     #endif
 
-    EEPROM_WRITE(parser.volumetric_enabled);
+    //
+    // Volumetric & Filament Size
+    //
+    #if DISABLED(NO_VOLUMETRICS)
 
-    // Save filament sizes
-    for (uint8_t q = 0; q < MAX_EXTRUDERS; q++) {
-      if (q < COUNT(planner.filament_size)) dummy = planner.filament_size[q];
-      EEPROM_WRITE(dummy);
-    }
+      EEPROM_WRITE(parser.volumetric_enabled);
+
+      // Save filament sizes
+      for (uint8_t q = 0; q < MAX_EXTRUDERS; q++) {
+        if (q < COUNT(planner.filament_size)) dummy = planner.filament_size[q];
+        EEPROM_WRITE(dummy);
+      }
+
+    #endif
 
     // Save TMC2130 or TMC2208 Configuration, and placeholder values
     uint16_t val;
       //
       // Volumetric & Filament Size
       //
+      #if DISABLED(NO_VOLUMETRICS)
 
-      EEPROM_READ(parser.volumetric_enabled);
-      for (uint8_t q = 0; q < MAX_EXTRUDERS; q++) {
-        EEPROM_READ(dummy);
-        if (q < COUNT(planner.filament_size)) planner.filament_size[q] = dummy;
-      }
+        EEPROM_READ(parser.volumetric_enabled);
+
+        for (uint8_t q = 0; q < MAX_EXTRUDERS; q++) {
+          EEPROM_READ(dummy);
+          if (q < COUNT(planner.filament_size)) planner.filament_size[q] = dummy;
+        }
+
+      #endif
 
       //
       // TMC2130 Stepper Current
     fwretract.reset();
   #endif
 
-  parser.volumetric_enabled =
-    #if ENABLED(VOLUMETRIC_DEFAULT_ON)
-      true
-    #else
-      false
-    #endif
-  ;
-  for (uint8_t q = 0; q < COUNT(planner.filament_size); q++)
-    planner.filament_size[q] = DEFAULT_NOMINAL_FILAMENT_DIA;
+  #if DISABLED(NO_VOLUMETRICS)
+
+    parser.volumetric_enabled =
+      #if ENABLED(VOLUMETRIC_DEFAULT_ON)
+        true
+      #else
+        false
+      #endif
+    ;
+    for (uint8_t q = 0; q < COUNT(planner.filament_size); q++)
+      planner.filament_size[q] = DEFAULT_NOMINAL_FILAMENT_DIA;
+
+  #endif
 
   endstops.enable_globally(
     #if ENABLED(ENDSTOPS_ALWAYS_ON_DEFAULT)
 
     SERIAL_EOL();
 
-    /**
-     * Volumetric extrusion M200
-     */
-    if (!forReplay) {
-      CONFIG_ECHO_START;
-      SERIAL_ECHOPGM("Filament settings:");
-      if (parser.volumetric_enabled)
-        SERIAL_EOL();
-      else
-        SERIAL_ECHOLNPGM(" Disabled");
-    }
+    #if DISABLED(NO_VOLUMETRICS)
+
+      /**
+       * Volumetric extrusion M200
+       */
+      if (!forReplay) {
+        CONFIG_ECHO_START;
+        SERIAL_ECHOPGM("Filament settings:");
+        if (parser.volumetric_enabled)
+          SERIAL_EOL();
+        else
+          SERIAL_ECHOLNPGM(" Disabled");
+      }
 
-    CONFIG_ECHO_START;
-    SERIAL_ECHOPAIR("  M200 D", LINEAR_UNIT(planner.filament_size[0]));
-    SERIAL_EOL();
-    #if EXTRUDERS > 1
       CONFIG_ECHO_START;
-      SERIAL_ECHOPAIR("  M200 T1 D", LINEAR_UNIT(planner.filament_size[1]));
+      SERIAL_ECHOPAIR("  M200 D", LINEAR_UNIT(planner.filament_size[0]));
       SERIAL_EOL();
-      #if EXTRUDERS > 2
+      #if EXTRUDERS > 1
         CONFIG_ECHO_START;
-        SERIAL_ECHOPAIR("  M200 T2 D", LINEAR_UNIT(planner.filament_size[2]));
+        SERIAL_ECHOPAIR("  M200 T1 D", LINEAR_UNIT(planner.filament_size[1]));
         SERIAL_EOL();
-        #if EXTRUDERS > 3
+        #if EXTRUDERS > 2
           CONFIG_ECHO_START;
-          SERIAL_ECHOPAIR("  M200 T3 D", LINEAR_UNIT(planner.filament_size[3]));
+          SERIAL_ECHOPAIR("  M200 T2 D", LINEAR_UNIT(planner.filament_size[2]));
           SERIAL_EOL();
-          #if EXTRUDERS > 4
+          #if EXTRUDERS > 3
             CONFIG_ECHO_START;
-            SERIAL_ECHOPAIR("  M200 T4 D", LINEAR_UNIT(planner.filament_size[4]));
+            SERIAL_ECHOPAIR("  M200 T3 D", LINEAR_UNIT(planner.filament_size[3]));
             SERIAL_EOL();
-          #endif // EXTRUDERS > 4
-        #endif // EXTRUDERS > 3
-      #endif // EXTRUDERS > 2
-    #endif // EXTRUDERS > 1
+            #if EXTRUDERS > 4
+              CONFIG_ECHO_START;
+              SERIAL_ECHOPAIR("  M200 T4 D", LINEAR_UNIT(planner.filament_size[4]));
+              SERIAL_EOL();
+            #endif // EXTRUDERS > 4
+          #endif // EXTRUDERS > 3
+        #endif // EXTRUDERS > 2
+      #endif // EXTRUDERS > 1
 
-    if (!parser.volumetric_enabled) {
-      CONFIG_ECHO_START;
-      SERIAL_ECHOLNPGM("  M200 D0");
-    }
+      if (!parser.volumetric_enabled) {
+        CONFIG_ECHO_START;
+        SERIAL_ECHOLNPGM("  M200 D0");
+      }
+
+    #endif // !NO_VOLUMETRICS
 
     if (!forReplay) {
       CONFIG_ECHO_START;

Marlin/src/module/planner.cpp

 
 int16_t Planner::flow_percentage[EXTRUDERS] = ARRAY_BY_EXTRUDERS1(100); // Extrusion factor for each extruder
 
-float Planner::e_factor[EXTRUDERS],               // The flow percentage and volumetric multiplier combine to scale E movement
-      Planner::filament_size[EXTRUDERS],          // diameter of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder
-      Planner::volumetric_area_nominal = CIRCLE_AREA((DEFAULT_NOMINAL_FILAMENT_DIA) * 0.5), // Nominal cross-sectional area
-      Planner::volumetric_multiplier[EXTRUDERS];  // Reciprocal of cross-sectional area of filament (in mm^2). Pre-calculated to reduce computation in the planner
+float Planner::e_factor[EXTRUDERS];               // The flow percentage and volumetric multiplier combine to scale E movement
+
+#if DISABLED(NO_VOLUMETRICS)
+  float Planner::filament_size[EXTRUDERS],          // diameter of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder
+        Planner::volumetric_area_nominal = CIRCLE_AREA((DEFAULT_NOMINAL_FILAMENT_DIA) * 0.5), // Nominal cross-sectional area
+        Planner::volumetric_multiplier[EXTRUDERS];  // Reciprocal of cross-sectional area of filament (in mm^2). Pre-calculated to reduce computation in the planner
+#endif
 
 uint32_t Planner::max_acceleration_steps_per_s2[XYZE_N],
          Planner::max_acceleration_mm_per_s2[XYZE_N]; // Use M201 to override by software
   #endif
 }
 
-/**
- * Get a volumetric multiplier from a filament diameter.
- * This is the reciprocal of the circular cross-section area.
- * Return 1.0 with volumetric off or a diameter of 0.0.
- */
-inline float calculate_volumetric_multiplier(const float &diameter) {
-  return (parser.volumetric_enabled && diameter) ? 1.0 / CIRCLE_AREA(diameter * 0.5) : 1.0;
-}
+#if DISABLED(NO_VOLUMETRICS)
 
-/**
- * Convert the filament sizes into volumetric multipliers.
- * The multiplier converts a given E value into a length.
- */
-void Planner::calculate_volumetric_multipliers() {
-  for (uint8_t i = 0; i < COUNT(filament_size); i++) {
-    volumetric_multiplier[i] = calculate_volumetric_multiplier(filament_size[i]);
-    refresh_e_factor(i);
+  /**
+   * Get a volumetric multiplier from a filament diameter.
+   * This is the reciprocal of the circular cross-section area.
+   * Return 1.0 with volumetric off or a diameter of 0.0.
+   */
+  inline float calculate_volumetric_multiplier(const float &diameter) {
+    return (parser.volumetric_enabled && diameter) ? 1.0 / CIRCLE_AREA(diameter * 0.5) : 1.0;
   }
-}
+
+  /**
+   * Convert the filament sizes into volumetric multipliers.
+   * The multiplier converts a given E value into a length.
+   */
+  void Planner::calculate_volumetric_multipliers() {
+    for (uint8_t i = 0; i < COUNT(filament_size); i++) {
+      volumetric_multiplier[i] = calculate_volumetric_multiplier(filament_size[i]);
+      refresh_e_factor(i);
+    }
+  }
+
+#endif // !NO_VOLUMETRICS
 
 #if ENABLED(FILAMENT_WIDTH_SENSOR)
   /**

Marlin/src/module/planner.h

 
     static int16_t flow_percentage[EXTRUDERS];      // Extrusion factor for each extruder
 
-    static float e_factor[EXTRUDERS],               // The flow percentage and volumetric multiplier combine to scale E movement
-                 filament_size[EXTRUDERS],          // diameter of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder
-                 volumetric_area_nominal,           // Nominal cross-sectional area
-                 volumetric_multiplier[EXTRUDERS];  // Reciprocal of cross-sectional area of filament (in mm^2). Pre-calculated to reduce computation in the planner
-                                                    // May be auto-adjusted by a filament width sensor
+    static float e_factor[EXTRUDERS];               // The flow percentage and volumetric multiplier combine to scale E movement
+
+    #if DISABLED(NO_VOLUMETRICS)
+      static float filament_size[EXTRUDERS],          // diameter of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder
+                   volumetric_area_nominal,           // Nominal cross-sectional area
+                   volumetric_multiplier[EXTRUDERS];  // Reciprocal of cross-sectional area of filament (in mm^2). Pre-calculated to reduce computation in the planner
+                                                      // May be auto-adjusted by a filament width sensor
+    #endif
 
     static float max_feedrate_mm_s[XYZE_N],         // Max speeds in mm per second
                  axis_steps_per_mm[XYZE_N],
     static void refresh_positioning();
 
     FORCE_INLINE static void refresh_e_factor(const uint8_t e) {
-      e_factor[e] = volumetric_multiplier[e] * flow_percentage[e] * 0.01;
+      e_factor[e] = (flow_percentage[e] * 0.01
+        #if DISABLED(NO_VOLUMETRICS)
+          * volumetric_multiplier[e]
+        #endif
+      );
     }
 
     // Manage fans, paste pressure, etc.
       void calculate_volumetric_for_width_sensor(const int8_t encoded_ratio);
     #endif
 
-    FORCE_INLINE static void set_filament_size(const uint8_t e, const float &v) {
-      filament_size[e] = v;
-      // make sure all extruders have some sane value for the filament size
-      for (uint8_t i = 0; i < COUNT(filament_size); i++)
-        if (!filament_size[i]) filament_size[i] = DEFAULT_NOMINAL_FILAMENT_DIA;
-    }
+    #if DISABLED(NO_VOLUMETRICS)
+
+      FORCE_INLINE static void set_filament_size(const uint8_t e, const float &v) {
+        filament_size[e] = v;
+        // make sure all extruders have some sane value for the filament size
+        for (uint8_t i = 0; i < COUNT(filament_size); i++)
+          if (!filament_size[i]) filament_size[i] = DEFAULT_NOMINAL_FILAMENT_DIA;
+      }
+
+    #endif
 
     #if ENABLED(ENABLE_LEVELING_FADE_HEIGHT)