Allow enabling volumetric filament on config load

Marlin/Configuration_adv.h

@@ -1085,4 +1085,14 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/Marlin_main.cpp

@@ -388,7 +388,13 @@ int feedrate_percentage = 100, saved_feedrate_percentage,
     flow_percentage[EXTRUDERS] = ARRAY_BY_EXTRUDERS1(100);
 
 bool axis_relative_modes[] = AXIS_RELATIVE_MODES,
-     volumetric_enabled = false;
+     volumetric_enabled = 
+      #if ENABLED(VOLUMETRIC_DEFAULT_ON)
+        true
+      #else
+        false
+      #endif
+      ;
 float filament_size[EXTRUDERS] = ARRAY_BY_EXTRUDERS1(DEFAULT_NOMINAL_FILAMENT_DIA),
       volumetric_multiplier[EXTRUDERS] = ARRAY_BY_EXTRUDERS1(1.0);
 

Marlin/configuration_store.cpp

@@ -824,7 +824,13 @@ void Config_ResetDefault() {
     retract_recover_feedrate_mm_s = RETRACT_RECOVER_FEEDRATE;
   #endif
 
-  volumetric_enabled = false;
+  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;
 

Marlin/example_configurations/Cartesio/Configuration_adv.h

@@ -1080,4 +1080,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Felix/Configuration_adv.h

@@ -1085,4 +1085,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Hephestos/Configuration_adv.h

@@ -1085,4 +1085,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Hephestos_2/Configuration_adv.h

@@ -1068,4 +1068,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/K8200/Configuration_adv.h

@@ -1093,4 +1093,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/K8400/Configuration_adv.h

@@ -1080,4 +1080,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/RigidBot/Configuration_adv.h

@@ -1085,4 +1085,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/SCARA/Configuration_adv.h

@@ -1085,4 +1085,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/TAZ4/Configuration_adv.h

@@ -1088,4 +1088,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/WITBOX/Configuration_adv.h

@@ -1085,4 +1085,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/generic/Configuration_adv.h

@@ -1087,4 +1087,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h

@@ -1087,4 +1087,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h

@@ -1092,4 +1092,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h

@@ -1087,4 +1087,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/makibox/Configuration_adv.h

@@ -1085,4 +1085,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

@@ -1085,4 +1085,13 @@
  */
 //#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.
+ */ 
+//#define VOLUMETRIC_DEFAULT_ON
+
 #endif // CONFIGURATION_ADV_H