MPC tuning improvements

Marlin/Configuration.h

@@ -643,6 +643,9 @@
  * for PID_EXTRUSION_SCALING and PID_FAN_SCALING. Use M306 to autotune the model.
  */
 #if ENABLED(MPCTEMP)
+  //#define MPC_EDIT_MENU                             // Add MPC editing to the "Advanced Settings" menu. (~1300 bytes of flash)
+  //#define MPC_AUTOTUNE_MENU                         // Add MPC auto-tuning to the "Advanced Settings" menu. (~350 bytes of flash)
+
   #define MPC_MAX BANG_MAX                            // (0..255) Current to nozzle while MPC is active.
   #define MPC_HEATER_POWER { 40.0f }                  // (W) Heat cartridge powers.
 
@@ -671,6 +674,7 @@
   #define MPC_STEADYSTATE 0.5f                        // (K/s) Temperature change rate for steady state logic to be enforced.
 
   #define MPC_TUNING_POS { X_CENTER, Y_CENTER, 1.0f } // (mm) M306 Autotuning position, ideally bed center just above the surface.
+  #define MPC_TUNING_END_Z 10.0f                      // (mm) M306 Autotuning final Z position.
 #endif
 
 //===========================================================================

Marlin/src/core/language.h

@@ -232,6 +232,14 @@
 #define STR_PID_DEBUG_DTERM                 " dTerm "
 #define STR_PID_DEBUG_CTERM                 " cTerm "
 #define STR_INVALID_EXTRUDER_NUM            " - Invalid extruder number !"
+#define STR_MPC_AUTOTUNE                    "MPC Autotune"
+#define STR_MPC_AUTOTUNE_START              " start for " STR_E
+#define STR_MPC_AUTOTUNE_INTERRUPTED        " interrupted!"
+#define STR_MPC_AUTOTUNE_FINISHED           " finished! Put the constants below into Configuration.h"
+#define STR_MPC_COOLING_TO_AMBIENT          "Cooling to ambient"
+#define STR_MPC_HEATING_PAST_200            "Heating to over 200C"
+#define STR_MPC_MEASURING_AMBIENT           "Measuring ambient heatloss at "
+#define STR_MPC_TEMPERATURE_ERROR           "Temperature error"
 
 #define STR_HEATER_BED                      "bed"
 #define STR_HEATER_CHAMBER                  "chamber"

Marlin/src/gcode/temp/M306.cpp

@@ -56,17 +56,7 @@ void GcodeSuite::M306() {
     return;
   }
 
-  HOTEND_LOOP() {
-    SERIAL_ECHOLNPGM("MPC constants for hotend ", e);
-    MPC_t& constants = thermalManager.temp_hotend[e].constants;
-    SERIAL_ECHOLNPGM("Heater power: ", constants.heater_power);
-    SERIAL_ECHOLNPGM("Heatblock heat capacity: ", constants.block_heat_capacity);
-    SERIAL_ECHOLNPAIR_F("Sensor responsivness: ", constants.sensor_responsiveness, 4);
-    SERIAL_ECHOLNPAIR_F("Ambient heat transfer coeff. (no fan): ", constants.ambient_xfer_coeff_fan0, 4);
-    #if ENABLED(MPC_INCLUDE_FAN)
-      SERIAL_ECHOLNPAIR_F("Ambient heat transfer coeff. (full fan): ", constants.ambient_xfer_coeff_fan0 + constants.fan255_adjustment, 4);
-    #endif
-  }
+  M306_report(true);
 }
 
 void GcodeSuite::M306_report(const bool forReplay/*=true*/) {

Marlin/src/inc/SanityCheck.h

@@ -2962,6 +2962,8 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
     #error "DWIN_CREALITY_LCD requires SDSUPPORT to be enabled."
   #elif EITHER(PID_EDIT_MENU, PID_AUTOTUNE_MENU)
     #error "DWIN_CREALITY_LCD does not support PID_EDIT_MENU or PID_AUTOTUNE_MENU."
+  #elif EITHER(MPC_EDIT_MENU, MPC_AUTOTUNE_MENU)
+    #error "DWIN_CREALITY_LCD does not support MPC_EDIT_MENU or MPC_AUTOTUNE_MENU."
   #elif ENABLED(LEVEL_BED_CORNERS)
     #error "DWIN_CREALITY_LCD does not support LEVEL_BED_CORNERS."
   #elif BOTH(LCD_BED_LEVELING, PROBE_MANUALLY)
@@ -2972,6 +2974,8 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
     #error "DWIN_LCD_PROUI requires SDSUPPORT to be enabled."
   #elif EITHER(PID_EDIT_MENU, PID_AUTOTUNE_MENU)
     #error "DWIN_LCD_PROUI does not support PID_EDIT_MENU or PID_AUTOTUNE_MENU."
+  #elif EITHER(MPC_EDIT_MENU, MPC_AUTOTUNE_MENU)
+    #error "DWIN_LCD_PROUI does not support MPC_EDIT_MENU or MPC_AUTOTUNE_MENU."
   #elif ENABLED(LEVEL_BED_CORNERS)
     #error "DWIN_LCD_PROUI does not support LEVEL_BED_CORNERS."
   #elif BOTH(LCD_BED_LEVELING, PROBE_MANUALLY)

Marlin/src/lcd/language/language_en.h

@@ -350,6 +350,14 @@ namespace Language_en {
   LSTR MSG_PID_BAD_EXTRUDER_NUM           = _UxGT("Autotune failed. Bad extruder.");
   LSTR MSG_PID_TEMP_TOO_HIGH              = _UxGT("Autotune failed. Temperature too high.");
   LSTR MSG_PID_TIMEOUT                    = _UxGT("Autotune failed! Timeout.");
+  LSTR MSG_MPC_MEASURING_AMBIENT          = _UxGT("Testing heat loss");
+  LSTR MSG_MPC_AUTOTUNE                   = _UxGT("MPC Autotune");
+  LSTR MSG_MPC_EDIT                       = _UxGT("Edit * MPC");
+  LSTR MSG_MPC_POWER_E                    = _UxGT("Power *");
+  LSTR MSG_MPC_BLOCK_HEAT_CAPACITY_E      = _UxGT("Block C *");
+  LSTR MSG_SENSOR_RESPONSIVENESS_E        = _UxGT("Sensor res *");
+  LSTR MSG_MPC_AMBIENT_XFER_COEFF_E       = _UxGT("Ambient h *");
+  LSTR MSG_MPC_AMBIENT_XFER_COEFF_FAN255_E= _UxGT("Amb. h fan *");
   LSTR MSG_SELECT                         = _UxGT("Select");
   LSTR MSG_SELECT_E                       = _UxGT("Select *");
   LSTR MSG_ACC                            = _UxGT("Accel");

Marlin/src/lcd/menu/menu_advanced.cpp

@@ -244,7 +244,7 @@ void menu_backlash();
   }
 #endif
 
-#if BOTH(AUTOTEMP, HAS_TEMP_HOTEND) || EITHER(PID_AUTOTUNE_MENU, PID_EDIT_MENU)
+#if BOTH(AUTOTEMP, HAS_TEMP_HOTEND) || ANY(PID_AUTOTUNE_MENU, PID_EDIT_MENU, MPC_AUTOTUNE_MENU, MPC_EDIT_MENU)
   #define SHOW_MENU_ADVANCED_TEMPERATURE 1
 #endif
 
@@ -253,7 +253,17 @@ void menu_backlash();
 //
 #if SHOW_MENU_ADVANCED_TEMPERATURE
 
+  #if ENABLED(MPC_EDIT_MENU)
+    #define MPC_EDIT_DEFS(N) \
+      MPC_t &c = thermalManager.temp_hotend[N].constants; \
+      TERN(MPC_INCLUDE_FAN, editable.decimal = c.ambient_xfer_coeff_fan0 + c.fan255_adjustment)
+  #endif
+
   void menu_advanced_temperature() {
+    #if ENABLED(MPC_EDIT_MENU) && !HAS_MULTI_HOTEND
+      MPC_EDIT_DEFS(0);
+    #endif
+
     START_MENU();
     BACK_ITEM(MSG_ADVANCED_SETTINGS);
 
@@ -330,6 +340,45 @@ void menu_backlash();
       #endif
     #endif
 
+    #if ENABLED(MPC_EDIT_MENU)
+
+      #define _MPC_EDIT_ITEMS(N) \
+        EDIT_ITEM_FAST_N(float31sign, N, MSG_MPC_POWER_E, &c.heater_power, 1, 200); \
+        EDIT_ITEM_FAST_N(float31sign, N, MSG_MPC_BLOCK_HEAT_CAPACITY_E, &c.block_heat_capacity, 0, 40); \
+        EDIT_ITEM_FAST_N(float43, N, MSG_SENSOR_RESPONSIVENESS_E, &c.sensor_responsiveness, 0, 1); \
+        EDIT_ITEM_FAST_N(float43, N, MSG_MPC_AMBIENT_XFER_COEFF_E, &c.ambient_xfer_coeff_fan0, 0, 1)
+
+      #if ENABLED(MPC_INCLUDE_FAN)
+        #define MPC_EDIT_ITEMS(N) \
+          _MPC_EDIT_ITEMS(N); \
+          EDIT_ITEM_FAST_N(float43, N, MSG_MPC_AMBIENT_XFER_COEFF_FAN255_E, &editable.decimal, 0, 1, []{ \
+            c.fan255_adjustment = editable.decimal - c.ambient_xfer_coeff_fan0; \
+          })
+      #else
+        #define MPC_EDIT_ITEMS _MPC_EDIT_ITEMS
+      #endif
+
+      #if HAS_MULTI_HOTEND
+        auto mpc_edit_hotend = [&](const uint8_t e) {
+          MPC_EDIT_DEFS(e);
+          START_MENU();
+          BACK_ITEM(MSG_TEMPERATURE);
+          MPC_EDIT_ITEMS(e);
+          END_MENU();
+        };
+        #define MPC_ENTRY(N) SUBMENU_N(N, MSG_MPC_EDIT, []{ mpc_edit_hotend(MenuItemBase::itemIndex); });
+      #else
+        #define MPC_ENTRY MPC_EDIT_ITEMS
+      #endif
+
+      REPEAT(HOTENDS, MPC_ENTRY);
+
+    #endif // MPC_EDIT_MENU
+
+    #if ENABLED(MPC_AUTOTUNE_MENU)
+      ACTION_ITEM(MSG_MPC_AUTOTUNE, []{ queue.inject(F("M306 T")); ui.return_to_status(); });
+    #endif
+
     #if ENABLED(PIDTEMPBED)
       #if ENABLED(PID_EDIT_MENU)
         _PID_EDIT_ITEMS_TMPL(H_BED, thermalManager.temp_bed);