Add pre-calculated planner.e_factor

Marlin/Marlin.h

 #define MMS_SCALED(MM_S) ((MM_S)*feedrate_percentage*0.01)
 
 extern bool axis_relative_modes[];
-extern bool volumetric_enabled;
-extern int16_t flow_percentage[EXTRUDERS]; // Extrusion factor for each extruder
-extern float filament_size[EXTRUDERS]; // cross-sectional area of filament (in millimeters), typically around 1.75 or 2.85, 0 disables the volumetric calculations for the extruder.
-extern float volumetric_multiplier[EXTRUDERS]; // reciprocal of cross-sectional area of filament (in square millimeters), stored this way to reduce computational burden in planner
 extern bool axis_known_position[XYZ];
 extern bool axis_homed[XYZ];
 extern volatile bool wait_for_heatup;
   extern float mixing_factor[MIXING_STEPPERS];
 #endif
 
-void calculate_volumetric_multipliers();
-
 /**
  * Blocking movement and shorthand functions
  */

Marlin/Marlin_main.cpp

 
 float feedrate_mm_s = MMM_TO_MMS(1500.0);
 static float saved_feedrate_mm_s;
-int16_t feedrate_percentage = 100, saved_feedrate_percentage,
-    flow_percentage[EXTRUDERS] = ARRAY_BY_EXTRUDERS1(100);
+int16_t feedrate_percentage = 100, saved_feedrate_percentage;
 
 // Initialized by settings.load()
-bool axis_relative_modes[] = AXIS_RELATIVE_MODES,
-     volumetric_enabled;
-float filament_size[EXTRUDERS], volumetric_multiplier[EXTRUDERS];
+bool axis_relative_modes[] = AXIS_RELATIVE_MODES;
 
 #if HAS_WORKSPACE_OFFSET
   #if HAS_POSITION_SHIFT
     set_destination_from_current();
     stepper.synchronize();  // Wait for buffered moves to complete
 
-    const float renormalize = 100.0 / flow_percentage[active_extruder] / volumetric_multiplier[active_extruder];
+    const float renormalize = 1.0 / planner.e_factor[active_extruder];
 
     if (retracting) {
       // Retract by moving from a faux E position back to the current E position
   #endif
 
   void do_pause_e_move(const float &length, const float fr) {
-    current_position[E_AXIS] += length * 100.0 / flow_percentage[active_extruder] / volumetric_multiplier[active_extruder];
+    current_position[E_AXIS] += length / planner.e_factor[active_extruder];
     set_destination_from_current();
     RUNPLAN(fr);
     stepper.synchronize();
     // 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
-    volumetric_enabled = (parser.value_linear_units() != 0.0);
-    if (volumetric_enabled) {
-      filament_size[target_extruder] = parser.value_linear_units();
+    if ( (parser.volumetric_enabled = (parser.value_linear_units() != 0.0)) ) {
+      planner.filament_size[target_extruder] = parser.value_linear_units();
       // 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;
+      for (uint8_t i = 0; i < COUNT(planner.filament_size); i++)
+        if (!planner.filament_size[i]) planner.filament_size[i] = DEFAULT_NOMINAL_FILAMENT_DIA;
     }
   }
-  calculate_volumetric_multipliers();
+  planner.calculate_volumetric_multipliers();
 }
 
 /**
  */
 inline void gcode_M221() {
   if (get_target_extruder_from_command(221)) return;
-  if (parser.seenval('S'))
-    flow_percentage[target_extruder] = parser.value_int();
+  if (parser.seenval('S')) {
+    planner.flow_percentage[target_extruder] = parser.value_int();
+    planner.refresh_e_factor(target_extruder);
+  }
 }
 
 /**
     //SERIAL_PROTOCOLPGM("Filament dia (measured mm):");
     //SERIAL_PROTOCOL(filament_width_meas);
     //SERIAL_PROTOCOLPGM("Extrusion ratio(%):");
-    //SERIAL_PROTOCOL(flow_percentage[active_extruder]);
+    //SERIAL_PROTOCOL(planner.flow_percentage[active_extruder]);
   }
 
   /**
    */
   inline void gcode_M406() {
     filament_sensor = false;
-    calculate_volumetric_multipliers();   // Restore correct 'volumetric_multiplier' value
+    planner.calculate_volumetric_multipliers();   // Restore correct 'volumetric_multiplier' value
   }
 
   /**
           }
         #endif // PREVENT_COLD_EXTRUSION
         #if ENABLED(PREVENT_LENGTHY_EXTRUDE)
-          if (FABS(destination[E_AXIS] - current_position[E_AXIS]) > (EXTRUDE_MAXLENGTH) / volumetric_multiplier[active_extruder]) {
+          if (FABS(destination[E_AXIS] - current_position[E_AXIS]) * planner.e_factor[active_extruder] > (EXTRUDE_MAXLENGTH)) {
             current_position[E_AXIS] = destination[E_AXIS]; // Behave as if the move really took place, but ignore E part
             SERIAL_ECHO_START();
             SERIAL_ECHOLNPGM(MSG_ERR_LONG_EXTRUDE_STOP);
 
 #endif // FAST_PWM_FAN
 
-float calculate_volumetric_multiplier(const float diameter) {
-  if (!volumetric_enabled || diameter == 0) return 1.0;
-  return 1.0 / (M_PI * sq(diameter * 0.5));
-}
-
-void calculate_volumetric_multipliers() {
-  for (uint8_t i = 0; i < COUNT(filament_size); i++)
-    volumetric_multiplier[i] = calculate_volumetric_multiplier(filament_size[i]);
-}
-
 void enable_all_steppers() {
   enable_X();
   enable_Y();

Marlin/configuration_store.cpp

  *  533  M208 R    swap_retract_recover_feedrate_mm_s (float)
  *
  * Volumetric Extrusion:                            21 bytes
- *  537  M200 D    volumetric_enabled               (bool)
- *  538  M200 T D  filament_size                    (float x5) (T0..3)
+ *  537  M200 D    parser.volumetric_enabled        (bool)
+ *  538  M200 T D  planner.filament_size            (float x5) (T0..3)
  *
  * HAVE_TMC2130:                                    22 bytes
  *  558  M906 X    Stepper X current                (uint16_t)
 #include "temperature.h"
 #include "ultralcd.h"
 #include "stepper.h"
-
-#if ENABLED(INCH_MODE_SUPPORT) || (ENABLED(ULTIPANEL) && ENABLED(TEMPERATURE_UNITS_SUPPORT))
-  #include "gcode.h"
-#endif
+#include "gcode.h"
 
 #if ENABLED(MESH_BED_LEVELING)
   #include "mesh_bed_leveling.h"
     thermalManager.updatePID();
   #endif
 
-  calculate_volumetric_multipliers();
+  planner.calculate_volumetric_multipliers();
 
   #if HAS_HOME_OFFSET || ENABLED(DUAL_X_CARRIAGE)
     // Software endstops depend on home_offset
     EEPROM_WRITE(swap_retract_recover_length);
     EEPROM_WRITE(swap_retract_recover_feedrate_mm_s);
 
-    EEPROM_WRITE(volumetric_enabled);
+    EEPROM_WRITE(parser.volumetric_enabled);
 
     // Save filament sizes
     for (uint8_t q = 0; q < MAX_EXTRUDERS; q++) {
-      if (q < COUNT(filament_size)) dummy = filament_size[q];
+      if (q < COUNT(planner.filament_size)) dummy = planner.filament_size[q];
       EEPROM_WRITE(dummy);
     }
 
       // Volumetric & Filament Size
       //
 
-      EEPROM_READ(volumetric_enabled);
+      EEPROM_READ(parser.volumetric_enabled);
       for (uint8_t q = 0; q < MAX_EXTRUDERS; q++) {
         EEPROM_READ(dummy);
-        if (q < COUNT(filament_size)) filament_size[q] = dummy;
+        if (q < COUNT(planner.filament_size)) planner.filament_size[q] = dummy;
       }
 
       //
     swap_retract_recover_feedrate_mm_s = RETRACT_RECOVER_FEEDRATE_SWAP;
   #endif // FWRETRACT
 
-  volumetric_enabled =
+  parser.volumetric_enabled =
     #if ENABLED(VOLUMETRIC_DEFAULT_ON)
       true
     #else
       false
     #endif
   ;
-  for (uint8_t q = 0; q < COUNT(filament_size); q++)
-    filament_size[q] = DEFAULT_NOMINAL_FILAMENT_DIA;
+  for (uint8_t q = 0; q < COUNT(planner.filament_size); q++)
+    planner.filament_size[q] = DEFAULT_NOMINAL_FILAMENT_DIA;
 
   endstops.enable_globally(
     #if ENABLED(ENDSTOPS_ALWAYS_ON_DEFAULT)
     CONFIG_ECHO_START;
     #if ENABLED(INCH_MODE_SUPPORT)
       #define LINEAR_UNIT(N) ((N) / parser.linear_unit_factor)
-      #define VOLUMETRIC_UNIT(N) ((N) / (volumetric_enabled ? parser.volumetric_unit_factor : parser.linear_unit_factor))
+      #define VOLUMETRIC_UNIT(N) ((N) / (parser.volumetric_enabled ? parser.volumetric_unit_factor : parser.linear_unit_factor))
       SERIAL_ECHOPGM("  G2");
       SERIAL_CHAR(parser.linear_unit_factor == 1.0 ? '1' : '0');
       SERIAL_ECHOPGM(" ; Units in ");
     if (!forReplay) {
       CONFIG_ECHO_START;
       SERIAL_ECHOPGM("Filament settings:");
-      if (volumetric_enabled)
+      if (parser.volumetric_enabled)
         SERIAL_EOL();
       else
         SERIAL_ECHOLNPGM(" Disabled");
     }
 
     CONFIG_ECHO_START;
-    SERIAL_ECHOPAIR("  M200 D", filament_size[0]);
+    SERIAL_ECHOPAIR("  M200 D", planner.filament_size[0]);
     SERIAL_EOL();
     #if EXTRUDERS > 1
       CONFIG_ECHO_START;
-      SERIAL_ECHOPAIR("  M200 T1 D", filament_size[1]);
+      SERIAL_ECHOPAIR("  M200 T1 D", planner.filament_size[1]);
       SERIAL_EOL();
       #if EXTRUDERS > 2
         CONFIG_ECHO_START;
-        SERIAL_ECHOPAIR("  M200 T2 D", filament_size[2]);
+        SERIAL_ECHOPAIR("  M200 T2 D", planner.filament_size[2]);
         SERIAL_EOL();
         #if EXTRUDERS > 3
           CONFIG_ECHO_START;
-          SERIAL_ECHOPAIR("  M200 T3 D", filament_size[3]);
+          SERIAL_ECHOPAIR("  M200 T3 D", planner.filament_size[3]);
           SERIAL_EOL();
           #if EXTRUDERS > 4
             CONFIG_ECHO_START;
-            SERIAL_ECHOPAIR("  M200 T4 D", filament_size[4]);
+            SERIAL_ECHOPAIR("  M200 T4 D", planner.filament_size[4]);
             SERIAL_EOL();
           #endif // EXTRUDERS > 4
         #endif // EXTRUDERS > 3
       #endif // EXTRUDERS > 2
     #endif // EXTRUDERS > 1
 
-    if (!volumetric_enabled) {
+    if (!parser.volumetric_enabled) {
       CONFIG_ECHO_START;
       SERIAL_ECHOLNPGM("  M200 D0");
     }

Marlin/gcode.cpp

 // Must be declared for allocation and to satisfy the linker
 // Zero values need no initialization.
 
+bool GCodeParser::volumetric_enabled;
+
 #if ENABLED(INCH_MODE_SUPPORT)
   float GCodeParser::linear_unit_factor, GCodeParser::volumetric_unit_factor;
 #endif

Marlin/gcode.h

   #include "serial.h"
 #endif
 
-#if ENABLED(INCH_MODE_SUPPORT)
-  extern bool volumetric_enabled;
-#endif
-
 /**
  * GCode parser
  *
 
   // Global states for GCode-level units features
 
+  static bool volumetric_enabled;
+
   #if ENABLED(INCH_MODE_SUPPORT)
     static float linear_unit_factor, volumetric_unit_factor;
   #endif

Marlin/planner.cpp

   uint8_t Planner::last_extruder = 0;     // Respond to extruder change
 #endif
 
+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_multiplier[EXTRUDERS];  // Reciprocal of cross-sectional area of filament (in mm^2). Pre-calculated to reduce computation in the planner
+
 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
 }
 
+inline float calculate_volumetric_multiplier(const float &diameter) {
+  if (!parser.volumetric_enabled || diameter == 0) return 1.0;
+  return 1.0 / CIRCLE_AREA(diameter * 0.5);
+}
+
+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);
+  }
+}
+
 #if PLANNER_LEVELING
   /**
    * rx, ry, rz - cartesian position in mm
 
   long de = target[E_AXIS] - position[E_AXIS];
 
-  const float e_factor = volumetric_multiplier[extruder] * flow_percentage[extruder] * 0.01;
-
   #if ENABLED(LIN_ADVANCE)
-    float de_float = e - position_float[E_AXIS];
+    float de_float = e - position_float[E_AXIS]; // Should this include e_factor?
   #endif
 
   #if ENABLED(PREVENT_COLD_EXTRUSION) || ENABLED(PREVENT_LENGTHY_EXTRUDE)
         }
       #endif // PREVENT_COLD_EXTRUSION
       #if ENABLED(PREVENT_LENGTHY_EXTRUDE)
-        const int32_t de_mm = labs(de * e_factor);
-        if (de_mm > (int32_t)axis_steps_per_mm[E_AXIS_N] * (EXTRUDE_MAXLENGTH)) { // It's not important to get max. extrusion length in a precision < 1mm, so save some cycles and cast to int
+        if (labs(de * e_factor[extruder]) > (int32_t)axis_steps_per_mm[E_AXIS_N] * (EXTRUDE_MAXLENGTH)) { // It's not important to get max. extrusion length in a precision < 1mm, so save some cycles and cast to int
           position[E_AXIS] = target[E_AXIS]; // Behave as if the move really took place, but ignore E part
           de = 0; // no difference
           #if ENABLED(LIN_ADVANCE)
   #endif
   if (de < 0) SBI(dm, E_AXIS);
 
-  const float esteps_float = de * e_factor;
+  const float esteps_float = de * e_factor[extruder];
   const int32_t esteps = abs(esteps_float) + 0.5;
 
   // Calculate the buffer head after we push this byte

Marlin/planner.h

       static uint8_t last_extruder;             // Respond to extruder change
     #endif
 
+    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_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 max_feedrate_mm_s[XYZE_N],     // Max speeds in mm per second
                  axis_steps_per_mm[XYZE_N],
                  steps_to_mm[XYZE_N];
     static void reset_acceleration_rates();
     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;
+    }
+
     // Manage fans, paste pressure, etc.
     static void check_axes_activity();
 
+    static void calculate_volumetric_multipliers();
+
     /**
      * Number of moves currently in the planner
      */

Marlin/temperature.cpp

       // Get the delayed info and add 100 to reconstitute to a percent of
       // the nominal filament diameter then square it to get an area
       const float vmroot = measurement_delay[meas_shift_index] * 0.01 + 1.0;
-      volumetric_multiplier[FILAMENT_SENSOR_EXTRUDER_NUM] = vmroot <= 0.1 ? 0.01 : sq(vmroot);
+      planner.volumetric_multiplier[FILAMENT_SENSOR_EXTRUDER_NUM] = vmroot <= 0.1 ? 0.01 : sq(vmroot);
+      planner.refresh_e_factor(FILAMENT_SENSOR_EXTRUDER_NUM);
     }
   #endif // FILAMENT_WIDTH_SENSOR
 

Marlin/ultralcd.cpp

 #include "stepper.h"
 #include "configuration_store.h"
 #include "utility.h"
+#include "gcode.h"
 
 #if HAS_BUZZER && DISABLED(LCD_USE_I2C_BUZZER)
   #include "buzzer.h"
     #endif
   #endif
 
+  // Refresh the E factor after changing flow
+  inline void _lcd_refresh_e_factor_0() { planner.refresh_e_factor(0); }
+  #if EXTRUDERS > 1
+    inline void _lcd_refresh_e_factor() { planner.refresh_e_factor(active_extruder); }
+    inline void _lcd_refresh_e_factor_1() { planner.refresh_e_factor(1); }
+    #if EXTRUDERS > 2
+      inline void _lcd_refresh_e_factor_2() { planner.refresh_e_factor(2); }
+      #if EXTRUDERS > 3
+        inline void _lcd_refresh_e_factor_3() { planner.refresh_e_factor(3); }
+        #if EXTRUDERS > 4
+          inline void _lcd_refresh_e_factor_4() { planner.refresh_e_factor(4); }
+        #endif // EXTRUDERS > 4
+      #endif // EXTRUDERS > 3
+    #endif // EXTRUDERS > 2
+  #endif // EXTRUDERS > 1
+
   /**
    *
    * "Tune" submenu
     // Flow [1-5]:
     //
     #if EXTRUDERS == 1
-      MENU_ITEM_EDIT(int3, MSG_FLOW, &flow_percentage[0], 10, 999);
+      MENU_ITEM_EDIT_CALLBACK(int3, MSG_FLOW, &planner.flow_percentage[0], 10, 999, _lcd_refresh_e_factor_0);
     #else // EXTRUDERS > 1
-      MENU_ITEM_EDIT(int3, MSG_FLOW, &flow_percentage[active_extruder], 10, 999);
-      MENU_ITEM_EDIT(int3, MSG_FLOW MSG_N1, &flow_percentage[0], 10, 999);
-      MENU_ITEM_EDIT(int3, MSG_FLOW MSG_N2, &flow_percentage[1], 10, 999);
+      MENU_ITEM_EDIT_CALLBACK(int3, MSG_FLOW, &planner.flow_percentage[active_extruder], 10, 999, _lcd_refresh_e_factor);
+      MENU_ITEM_EDIT_CALLBACK(int3, MSG_FLOW MSG_N1, &planner.flow_percentage[0], 10, 999, _lcd_refresh_e_factor_0);
+      MENU_ITEM_EDIT_CALLBACK(int3, MSG_FLOW MSG_N2, &planner.flow_percentage[1], 10, 999, _lcd_refresh_e_factor_1);
       #if EXTRUDERS > 2
-        MENU_ITEM_EDIT(int3, MSG_FLOW MSG_N3, &flow_percentage[2], 10, 999);
+        MENU_ITEM_EDIT_CALLBACK(int3, MSG_FLOW MSG_N3, &planner.flow_percentage[2], 10, 999, _lcd_refresh_e_factor_2);
         #if EXTRUDERS > 3
-          MENU_ITEM_EDIT(int3, MSG_FLOW MSG_N4, &flow_percentage[3], 10, 999);
+          MENU_ITEM_EDIT_CALLBACK(int3, MSG_FLOW MSG_N4, &planner.flow_percentage[3], 10, 999, _lcd_refresh_e_factor_3);
           #if EXTRUDERS > 4
-            MENU_ITEM_EDIT(int3, MSG_FLOW MSG_N5, &flow_percentage[4], 10, 999);
+            MENU_ITEM_EDIT_CALLBACK(int3, MSG_FLOW MSG_N5, &planner.flow_percentage[4], 10, 999, _lcd_refresh_e_factor_4);
           #endif // EXTRUDERS > 4
         #endif // EXTRUDERS > 3
       #endif // EXTRUDERS > 2
       MENU_ITEM_EDIT(float3, MSG_ADVANCE_K, &planner.extruder_advance_k, 0, 999);
     #endif
 
-    MENU_ITEM_EDIT_CALLBACK(bool, MSG_VOLUMETRIC_ENABLED, &volumetric_enabled, calculate_volumetric_multipliers);
+    MENU_ITEM_EDIT_CALLBACK(bool, MSG_VOLUMETRIC_ENABLED, &parser.volumetric_enabled, planner.calculate_volumetric_multipliers);
 
-    if (volumetric_enabled) {
+    if (parser.volumetric_enabled) {
       #if EXTRUDERS == 1
-        MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM, &filament_size[0], 1.5, 3.25, calculate_volumetric_multipliers);
+        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 MSG_DIAM_E1, &filament_size[0], 1.5, 3.25, calculate_volumetric_multipliers);
-        MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(float43, MSG_FILAMENT_DIAM MSG_DIAM_E2, &filament_size[1], 1.5, 3.25, 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, &filament_size[2], 1.5, 3.25, calculate_volumetric_multipliers);
+          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, &filament_size[3], 1.5, 3.25, calculate_volumetric_multipliers);
+            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, &filament_size[4], 1.5, 3.25, calculate_volumetric_multipliers);
+              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

Marlin/ultralcd_impl_DOGM.h

     strcpy(zstring, ftostr52sp(FIXFLOAT(LOGICAL_Z_POSITION(current_position[Z_AXIS]))));
     #if ENABLED(FILAMENT_LCD_DISPLAY) && DISABLED(SDSUPPORT)
       strcpy(wstring, ftostr12ns(filament_width_meas));
-      strcpy(mstring, itostr3(100.0 * volumetric_multiplier[FILAMENT_SENSOR_EXTRUDER_NUM]));
+      strcpy(mstring, itostr3(100.0 * planner.volumetric_multiplier[FILAMENT_SENSOR_EXTRUDER_NUM]));
     #endif
   }
 
         lcd_print(ftostr12ns(filament_width_meas));
         lcd_printPGM(PSTR("  " LCD_STR_FILAM_MUL));
         u8g.print(':');
-        lcd_print(itostr3(100.0 * volumetric_multiplier[FILAMENT_SENSOR_EXTRUDER_NUM]));
+        lcd_print(itostr3(100.0 * planner.volumetric_multiplier[FILAMENT_SENSOR_EXTRUDER_NUM]));
         u8g.print('%');
       }
     #else

Marlin/ultralcd_impl_HD44780.h

       lcd_printPGM(PSTR("Dia "));
       lcd.print(ftostr12ns(filament_width_meas));
       lcd_printPGM(PSTR(" V"));
-      lcd.print(itostr3(100.0 * volumetric_multiplier[FILAMENT_SENSOR_EXTRUDER_NUM]));
+      lcd.print(itostr3(100.0 * planner.volumetric_multiplier[FILAMENT_SENSOR_EXTRUDER_NUM]));
       lcd.write('%');
       return;
     }