Merge pull request #5963 from thinkyhead/rc_no_offsets_optim

New option: NO_WORKSPACE_OFFSETS

Marlin/Configuration_adv.h

@@ -1169,4 +1169,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/Marlin.h

@@ -275,27 +275,19 @@ extern volatile bool wait_for_heatup;
 #endif
 
 extern float current_position[NUM_AXIS];
-extern float position_shift[XYZ];
-extern float home_offset[XYZ];
 
-#if HOTENDS > 1
+// Workspace offsets
-  extern float hotend_offset[XYZ][HOTENDS];
+#if DISABLED(NO_WORKSPACE_OFFSETS)
-#endif
+  extern float position_shift[XYZ],
-
+               home_offset[XYZ],
-// Software Endstops
+               workspace_offset[XYZ];
-void update_software_endstops(AxisEnum axis);
+  #define LOGICAL_POSITION(POS, AXIS) ((POS) + workspace_offset[AXIS])
-#if ENABLED(min_software_endstops) || ENABLED(max_software_endstops)
+  #define RAW_POSITION(POS, AXIS)     ((POS) - workspace_offset[AXIS])
-  extern bool soft_endstops_enabled;
-  void clamp_to_software_endstops(float target[XYZ]);
 #else
-  #define soft_endstops_enabled false
+  #define LOGICAL_POSITION(POS, AXIS) (POS)
-  #define clamp_to_software_endstops(x) NOOP
+  #define RAW_POSITION(POS, AXIS)     (POS)
 #endif
-extern float soft_endstop_min[XYZ];
-extern float soft_endstop_max[XYZ];
 
-#define LOGICAL_POSITION(POS, AXIS) ((POS) + home_offset[AXIS] + position_shift[AXIS])
-#define RAW_POSITION(POS, AXIS)     ((POS) - home_offset[AXIS] - position_shift[AXIS])
 #define LOGICAL_X_POSITION(POS)     LOGICAL_POSITION(POS, X_AXIS)
 #define LOGICAL_Y_POSITION(POS)     LOGICAL_POSITION(POS, Y_AXIS)
 #define LOGICAL_Z_POSITION(POS)     LOGICAL_POSITION(POS, Z_AXIS)
@@ -304,6 +296,26 @@ extern float soft_endstop_max[XYZ];
 #define RAW_Z_POSITION(POS)         RAW_POSITION(POS, Z_AXIS)
 #define RAW_CURRENT_POSITION(AXIS)  RAW_POSITION(current_position[AXIS], AXIS)
 
+#if HOTENDS > 1
+  extern float hotend_offset[XYZ][HOTENDS];
+#endif
+
+// Software Endstops
+extern float soft_endstop_min[XYZ];
+extern float soft_endstop_max[XYZ];
+
+#if ENABLED(min_software_endstops) || ENABLED(max_software_endstops)
+  extern bool soft_endstops_enabled;
+  void clamp_to_software_endstops(float target[XYZ]);
+#else
+  #define soft_endstops_enabled false
+  #define clamp_to_software_endstops(x) NOOP
+#endif
+
+#if DISABLED(NO_WORKSPACE_OFFSETS) || ENABLED(DUAL_X_CARRIAGE) || ENABLED(DELTA)
+  void update_software_endstops(const AxisEnum axis);
+#endif
+
 // GCode support for external objects
 bool code_seen(char);
 int code_value_int();

Marlin/Marlin_main.cpp

@@ -396,6 +396,8 @@ bool axis_relative_modes[] = AXIS_RELATIVE_MODES,
 float filament_size[EXTRUDERS] = ARRAY_BY_EXTRUDERS1(DEFAULT_NOMINAL_FILAMENT_DIA),
       volumetric_multiplier[EXTRUDERS] = ARRAY_BY_EXTRUDERS1(1.0);
 
+#if DISABLED(NO_WORKSPACE_OFFSETS)
+
   // The distance that XYZ has been offset by G92. Reset by G28.
   float position_shift[XYZ] = { 0 };
 
@@ -403,6 +405,11 @@ float position_shift[XYZ] = { 0 };
   // Set by M206, M428, or menu item. Saved to EEPROM.
   float home_offset[XYZ] = { 0 };
 
+  // The above two are combined to save on computes
+  float workspace_offset[XYZ] = { 0 };
+
+#endif
+
 // Software Endstops are based on the configured limits.
 #if ENABLED(min_software_endstops) || ENABLED(max_software_endstops)
   bool soft_endstops_enabled = true;
@@ -1333,6 +1340,8 @@ bool get_target_extruder_from_command(int code) {
 
 #endif // DUAL_X_CARRIAGE
 
+#if DISABLED(NO_WORKSPACE_OFFSETS) || ENABLED(DUAL_X_CARRIAGE) || ENABLED(DELTA)
+
   /**
    * Software endstops can be used to monitor the open end of
    * an axis that has a hardware endstop on the other end. Or
@@ -1342,8 +1351,8 @@ bool get_target_extruder_from_command(int code) {
    * the software endstop positions must be refreshed to remain
    * at the same positions relative to the machine.
    */
-void update_software_endstops(AxisEnum axis) {
+  void update_software_endstops(const AxisEnum axis) {
-  float offs = LOGICAL_POSITION(0, axis);
+    const float offs = workspace_offset[axis] = LOGICAL_POSITION(0, axis);
 
     #if ENABLED(DUAL_X_CARRIAGE)
       if (axis == X_AXIS) {
@@ -1376,8 +1385,10 @@ void update_software_endstops(AxisEnum axis) {
     #if ENABLED(DEBUG_LEVELING_FEATURE)
       if (DEBUGGING(LEVELING)) {
         SERIAL_ECHOPAIR("For ", axis_codes[axis]);
+        #if DISABLED(NO_WORKSPACE_OFFSETS)
           SERIAL_ECHOPAIR(" axis:\n home_offset = ", home_offset[axis]);
           SERIAL_ECHOPAIR("\n position_shift = ", position_shift[axis]);
+        #endif
         SERIAL_ECHOPAIR("\n soft_endstop_min = ", soft_endstop_min[axis]);
         SERIAL_ECHOLNPAIR("\n soft_endstop_max = ", soft_endstop_max[axis]);
       }
@@ -1387,9 +1398,11 @@ void update_software_endstops(AxisEnum axis) {
       if (axis == Z_AXIS)
         delta_clip_start_height = soft_endstop_max[axis] - delta_safe_distance_from_top();
     #endif
-
   }
 
+#endif // NO_WORKSPACE_OFFSETS
+
+#if DISABLED(NO_WORKSPACE_OFFSETS)
   /**
    * Change the home offset for an axis, update the current
    * position and the software endstops to retain the same
@@ -1398,11 +1411,12 @@ void update_software_endstops(AxisEnum axis) {
    * Since this changes the current_position, code should
    * call sync_plan_position soon after this.
    */
-static void set_home_offset(AxisEnum axis, float v) {
+  static void set_home_offset(const AxisEnum axis, const float v) {
     current_position[axis] += v - home_offset[axis];
     home_offset[axis] = v;
     update_software_endstops(axis);
   }
+#endif // NO_WORKSPACE_OFFSETS
 
 /**
  * Set an axis' current position to its home position (after homing).
@@ -1433,8 +1447,10 @@ static void set_axis_is_at_home(AxisEnum axis) {
 
   axis_known_position[axis] = axis_homed[axis] = true;
 
+  #if DISABLED(NO_WORKSPACE_OFFSETS)
     position_shift[axis] = 0;
     update_software_endstops(axis);
+  #endif
 
   #if ENABLED(DUAL_X_CARRIAGE)
     if (axis == X_AXIS && (active_extruder == 1 || dual_x_carriage_mode == DXC_DUPLICATION_MODE)) {
@@ -1507,8 +1523,10 @@ static void set_axis_is_at_home(AxisEnum axis) {
 
   #if ENABLED(DEBUG_LEVELING_FEATURE)
     if (DEBUGGING(LEVELING)) {
+      #if DISABLED(NO_WORKSPACE_OFFSETS)
         SERIAL_ECHOPAIR("> home_offset[", axis_codes[axis]);
         SERIAL_ECHOLNPAIR("] = ", home_offset[axis]);
+      #endif
       DEBUG_POS("", current_position);
       SERIAL_ECHOPAIR("<<< set_axis_is_at_home(", axis_codes[axis]);
       SERIAL_CHAR(')');
@@ -1549,8 +1567,8 @@ inline void line_to_destination(float fr_mm_s) {
 }
 inline void line_to_destination() { line_to_destination(feedrate_mm_s); }
 
-inline void set_current_to_destination() { memcpy(current_position, destination, sizeof(current_position)); }
+inline void set_current_to_destination() { COPY(current_position, destination); }
-inline void set_destination_to_current() { memcpy(destination, current_position, sizeof(destination)); }
+inline void set_destination_to_current() { COPY(destination, current_position); }
 
 #if IS_KINEMATIC
   /**
@@ -3557,7 +3575,7 @@ inline void gcode_G28() {
         HOMEAXIS(X);
 
         // Consider the active extruder to be parked
-        memcpy(raised_parked_position, current_position, sizeof(raised_parked_position));
+        COPY(raised_parked_position, current_position);
         delayed_move_time = 0;
         active_extruder_parked = true;
 
@@ -4357,7 +4375,7 @@ inline void gcode_G28() {
         #endif
 
         float converted[XYZ];
-        memcpy(converted, current_position, sizeof(converted));
+        COPY(converted, current_position);
 
         planner.abl_enabled = true;
         planner.unapply_leveling(converted); // use conversion machinery
@@ -4379,7 +4397,7 @@ inline void gcode_G28() {
         }
 
         // The rotated XY and corrected Z are now current_position
-        memcpy(current_position, converted, sizeof(converted));
+        COPY(current_position, converted);
 
         #if ENABLED(DEBUG_LEVELING_FEATURE)
           if (DEBUGGING(LEVELING)) DEBUG_POS("G29 corrected XYZ", current_position);
@@ -4595,8 +4613,10 @@ inline void gcode_G92() {
 
         if (i != E_AXIS) {
           didXYZ = true;
+          #if DISABLED(NO_WORKSPACE_OFFSETS)
             position_shift[i] += v - p; // Offset the coordinate space
             update_software_endstops((AxisEnum)i);
+          #endif
         }
       #endif
     }
@@ -6326,6 +6346,8 @@ inline void gcode_M205() {
   if (code_seen('E')) planner.max_jerk[E_AXIS] = code_value_axis_units(E_AXIS);
 }
 
+#if DISABLED(NO_WORKSPACE_OFFSETS)
+
   /**
    * M206: Set Additional Homing Offset (X Y Z). SCARA aliases T=X, P=Y
    */
@@ -6343,6 +6365,8 @@ inline void gcode_M206() {
     report_current_position();
   }
 
+#endif // NO_WORKSPACE_OFFSETS
+
 #if ENABLED(DELTA)
   /**
    * M665: Set delta configurations
@@ -7165,6 +7189,8 @@ void quickstop_stepper() {
 
 #endif
 
+#if DISABLED(NO_WORKSPACE_OFFSETS)
+
   /**
    * M428: Set home_offset based on the distance between the
    *       current_position and the nearest "reference point."
@@ -7205,6 +7231,8 @@ inline void gcode_M428() {
     }
   }
 
+#endif // NO_WORKSPACE_OFFSETS
+
 /**
  * M500: Store settings in EEPROM
  */
@@ -7929,7 +7957,7 @@ void tool_change(const uint8_t tmp_extruder, const float fr_mm_s/*=0.0*/, bool n
               break;
             case DXC_AUTO_PARK_MODE:
               // record raised toolhead position for use by unpark
-              memcpy(raised_parked_position, current_position, sizeof(raised_parked_position));
+              COPY(raised_parked_position, current_position);
               raised_parked_position[Z_AXIS] += TOOLCHANGE_UNPARK_ZLIFT;
               #if ENABLED(max_software_endstops)
                 NOMORE(raised_parked_position[Z_AXIS], soft_endstop_max[Z_AXIS]);
@@ -8073,10 +8101,14 @@ void tool_change(const uint8_t tmp_extruder, const float fr_mm_s/*=0.0*/, bool n
           // The newly-selected extruder XY is actually at...
           current_position[X_AXIS] += xydiff[X_AXIS];
           current_position[Y_AXIS] += xydiff[Y_AXIS];
+          #if DISABLED(NO_WORKSPACE_OFFSETS) || ENABLED(DUAL_X_CARRIAGE)
             for (uint8_t i = X_AXIS; i <= Y_AXIS; i++) {
+              #if DISABLED(NO_WORKSPACE_OFFSETS)
                 position_shift[i] += xydiff[i];
+              #endif
               update_software_endstops((AxisEnum)i);
             }
+          #endif
 
           // Set the new active extruder
           active_extruder = tmp_extruder;
@@ -8631,9 +8663,12 @@ void process_next_command() {
       case 205: //M205: Set advanced settings
         gcode_M205();
         break;
+
+      #if DISABLED(NO_WORKSPACE_OFFSETS)
         case 206: // M206: Set home offsets
           gcode_M206();
           break;
+      #endif
 
       #if ENABLED(DELTA)
         case 665: // M665: Set delta configurations
@@ -8797,9 +8832,11 @@ void process_next_command() {
           break;
       #endif
 
+      #if DISABLED(NO_WORKSPACE_OFFSETS)
         case 428: // M428: Apply current_position to home_offset
           gcode_M428();
           break;
+      #endif
 
       case 500: // M500: Store settings in EEPROM
         gcode_M500();
@@ -9287,7 +9324,7 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
     planner.unapply_leveling(cartes);
   #endif
   if (axis == ALL_AXES)
-    memcpy(current_position, cartes, sizeof(cartes));
+    COPY(current_position, cartes);
   else
     current_position[axis] = cartes[axis];
 }
@@ -9322,14 +9359,14 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
     // Split at the left/front border of the right/top square
     int8_t gcx = max(cx1, cx2), gcy = max(cy1, cy2);
     if (cx2 != cx1 && TEST(x_splits, gcx)) {
-      memcpy(end, destination, sizeof(end));
+      COPY(end, destination);
       destination[X_AXIS] = LOGICAL_X_POSITION(mbl.get_probe_x(gcx));
       normalized_dist = (destination[X_AXIS] - current_position[X_AXIS]) / (end[X_AXIS] - current_position[X_AXIS]);
       destination[Y_AXIS] = MBL_SEGMENT_END(Y);
       CBI(x_splits, gcx);
     }
     else if (cy2 != cy1 && TEST(y_splits, gcy)) {
-      memcpy(end, destination, sizeof(end));
+      COPY(end, destination);
       destination[Y_AXIS] = LOGICAL_Y_POSITION(mbl.get_probe_y(gcy));
       normalized_dist = (destination[Y_AXIS] - current_position[Y_AXIS]) / (end[Y_AXIS] - current_position[Y_AXIS]);
       destination[X_AXIS] = MBL_SEGMENT_END(X);
@@ -9349,7 +9386,7 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
     mesh_line_to_destination(fr_mm_s, x_splits, y_splits);
 
     // Restore destination from stack
-    memcpy(destination, end, sizeof(end));
+    COPY(destination, end);
     mesh_line_to_destination(fr_mm_s, x_splits, y_splits);
   }
 
@@ -9385,14 +9422,14 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
     // Split at the left/front border of the right/top square
     int8_t gcx = max(cx1, cx2), gcy = max(cy1, cy2);
     if (cx2 != cx1 && TEST(x_splits, gcx)) {
-      memcpy(end, destination, sizeof(end));
+      COPY(end, destination);
       destination[X_AXIS] = LOGICAL_X_POSITION(bilinear_start[X_AXIS] + ABL_BG_SPACING(X_AXIS) * gcx);
       normalized_dist = (destination[X_AXIS] - current_position[X_AXIS]) / (end[X_AXIS] - current_position[X_AXIS]);
       destination[Y_AXIS] = LINE_SEGMENT_END(Y);
       CBI(x_splits, gcx);
     }
     else if (cy2 != cy1 && TEST(y_splits, gcy)) {
-      memcpy(end, destination, sizeof(end));
+      COPY(end, destination);
       destination[Y_AXIS] = LOGICAL_Y_POSITION(bilinear_start[Y_AXIS] + ABL_BG_SPACING(Y_AXIS) * gcy);
       normalized_dist = (destination[Y_AXIS] - current_position[Y_AXIS]) / (end[Y_AXIS] - current_position[Y_AXIS]);
       destination[X_AXIS] = LINE_SEGMENT_END(X);
@@ -9412,7 +9449,7 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
     bilinear_line_to_destination(fr_mm_s, x_splits, y_splits);
 
     // Restore destination from stack
-    memcpy(destination, end, sizeof(end));
+    COPY(destination, end);
     bilinear_line_to_destination(fr_mm_s, x_splits, y_splits);
   }
 
@@ -9507,7 +9544,7 @@ void set_current_from_steppers_for_axis(const AxisEnum axis) {
 
       // Get the logical current position as starting point
       float logical[XYZE];
-      memcpy(logical, current_position, sizeof(logical));
+      COPY(logical, current_position);
 
       #define DELTA_VAR logical
 
@@ -10480,8 +10517,12 @@ void setup() {
   // This also updates variables in the planner, elsewhere
   Config_RetrieveSettings();
 
+  #if DISABLED(NO_WORKSPACE_OFFSETS)
     // Initialize current position based on home_offset
-  memcpy(current_position, home_offset, sizeof(home_offset));
+    COPY(current_position, home_offset);
+  #else
+    ZERO(current_position);
+  #endif
 
   // Vital to init stepper/planner equivalent for current_position
   SYNC_PLAN_POSITION_KINEMATIC();

Marlin/Version.h

@@ -61,7 +61,9 @@
   #define REQUIRED_CONFIGURATION_ADV_H_VERSION 010100
 
   /**
-   * @todo: Missing documentation block
+   * The protocol for communication to the host. Protocol indicates communication
+   * standards such as the use of ASCII, "echo:" and "error:" line prefixes, etc.
+   * (Other behaviors are given by the firmware version and capabilities report.)
    */
   #define PROTOCOL_VERSION "1.0"
 

Marlin/configuration_store.cpp

@@ -171,8 +171,10 @@ void Config_Postprocess() {
 
   calculate_volumetric_multipliers();
 
+  #if DISABLED(NO_WORKSPACE_OFFSETS) || ENABLED(DUAL_X_CARRIAGE) || ENABLED(DELTA)
     // Software endstops depend on home_offset
     LOOP_XYZ(i) update_software_endstops((AxisEnum)i);
+  #endif
 }
 
 #if ENABLED(EEPROM_SETTINGS)
@@ -251,6 +253,9 @@ void Config_Postprocess() {
     EEPROM_WRITE(planner.min_travel_feedrate_mm_s);
     EEPROM_WRITE(planner.min_segment_time);
     EEPROM_WRITE(planner.max_jerk);
+    #if ENABLED(NO_WORKSPACE_OFFSETS)
+      float home_offset[XYZ] = { 0 };
+    #endif
     EEPROM_WRITE(home_offset);
 
     #if HOTENDS > 1
@@ -501,6 +506,10 @@ void Config_Postprocess() {
       EEPROM_READ(planner.min_travel_feedrate_mm_s);
       EEPROM_READ(planner.min_segment_time);
       EEPROM_READ(planner.max_jerk);
+
+      #if ENABLED(NO_WORKSPACE_OFFSETS)
+        float home_offset[XYZ];
+      #endif
       EEPROM_READ(home_offset);
 
       #if HOTENDS > 1
@@ -729,7 +738,9 @@ void Config_ResetDefault() {
   planner.max_jerk[Y_AXIS] = DEFAULT_YJERK;
   planner.max_jerk[Z_AXIS] = DEFAULT_ZJERK;
   planner.max_jerk[E_AXIS] = DEFAULT_EJERK;
-  home_offset[X_AXIS] = home_offset[Y_AXIS] = home_offset[Z_AXIS] = 0;
+  #if DISABLED(NO_WORKSPACE_OFFSETS)
+    ZERO(home_offset);
+  #endif
 
   #if HOTENDS > 1
     constexpr float tmp4[XYZ][HOTENDS] = {
@@ -940,6 +951,7 @@ void Config_ResetDefault() {
     SERIAL_ECHOPAIR(" E", planner.max_jerk[E_AXIS]);
     SERIAL_EOL;
 
+    #if DISABLED(NO_WORKSPACE_OFFSETS)
       CONFIG_ECHO_START;
       if (!forReplay) {
         SERIAL_ECHOLNPGM("Home offset (mm)");
@@ -949,6 +961,7 @@ void Config_ResetDefault() {
       SERIAL_ECHOPAIR(" Y", home_offset[Y_AXIS]);
       SERIAL_ECHOPAIR(" Z", home_offset[Z_AXIS]);
       SERIAL_EOL;
+    #endif
 
     #if HOTENDS > 1
       CONFIG_ECHO_START;

Marlin/example_configurations/Cartesio/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Felix/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Hephestos/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/Hephestos_2/Configuration_adv.h

@@ -1149,4 +1149,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/K8200/Configuration_adv.h

@@ -1179,4 +1179,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/K8400/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/RigidBot/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/SCARA/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/TAZ4/Configuration_adv.h

@@ -1174,4 +1174,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/WITBOX/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/generic/Configuration_adv.h

@@ -1168,4 +1168,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h

@@ -1168,4 +1168,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h

@@ -1173,4 +1173,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h

@@ -1168,4 +1168,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/makibox/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h

@@ -1166,4 +1166,13 @@
  */ 
 //#define VOLUMETRIC_DEFAULT_ON
 
+/**
+ * Enable this option for a leaner build of Marlin that removes all
+ * workspace offsets, simplifying coordinate transformations, leveling, etc.
+ *
+ *  - M206 and M428 are disabled.
+ *  - G92 will revert to its behavior from Marlin 1.0.
+ */
+//#define NO_WORKSPACE_OFFSETS
+
 #endif // CONFIGURATION_ADV_H

Marlin/macros.h

@@ -79,6 +79,7 @@
 #define NUMERIC_SIGNED(a) (NUMERIC(a) || (a) == '-')
 #define COUNT(a) (sizeof(a)/sizeof(*a))
 #define ZERO(a) memset(a,0,sizeof(a))
+#define COPY(a,b) memcpy(a,b,min(sizeof(a),sizeof(b)))
 
 // Macros for initializing arrays
 #define ARRAY_6(v1, v2, v3, v4, v5, v6, ...) { v1, v2, v3, v4, v5, v6 }

Marlin/planner.cpp

@@ -1298,7 +1298,7 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
   block->flag |= BLOCK_FLAG_RECALCULATE | (block->nominal_speed <= v_allowable ? BLOCK_FLAG_NOMINAL_LENGTH : 0);
 
   // Update previous path unit_vector and nominal speed
-  memcpy(previous_speed, current_speed, sizeof(previous_speed));
+  COPY(previous_speed, current_speed);
   previous_nominal_speed = block->nominal_speed;
   previous_safe_speed = safe_speed;
 
@@ -1360,7 +1360,7 @@ void Planner::_buffer_line(const float &a, const float &b, const float &c, const
   block_buffer_head = next_buffer_head;
 
   // Update the position (only when a move was queued)
-  memcpy(position, target, sizeof(position));
+  COPY(position, target);
   #if ENABLED(LIN_ADVANCE)
     position_float[X_AXIS] = a;
     position_float[Y_AXIS] = b;