Fix material preset editing

Marlin/src/lcd/menu/menu_configuration.cpp

 
 #if PREHEAT_COUNT && DISABLED(SLIM_LCD_MENUS)
 
-  void _menu_configuration_preheat_settings(const uint8_t material) {
+  void _menu_configuration_preheat_settings(const uint8_t m) {
     #define _MINTEMP_ITEM(N) HEATER_##N##_MINTEMP,
     #define _MAXTEMP_ITEM(N) HEATER_##N##_MAXTEMP,
     #define MINTEMP_ALL _MIN(REPEAT(HOTENDS, _MINTEMP_ITEM) 999)
     #define MAXTEMP_ALL _MAX(REPEAT(HOTENDS, _MAXTEMP_ITEM) 0)
     START_MENU();
     BACK_ITEM(MSG_CONFIGURATION);
-    EDIT_ITEM(percent, MSG_FAN_SPEED, &ui.material_preset[material].fan_speed, 0, 255);
+    editable.uint8 = uint8_t(ui.material_preset[m].fan_speed);
+    EDIT_ITEM_N(percent, m, MSG_FAN_SPEED, &editable.uint8, 0, 255, []{ ui.material_preset[MenuItemBase::itemIndex].fan_speed = editable.uint8; });
     #if HAS_TEMP_HOTEND
-      EDIT_ITEM(int3, MSG_NOZZLE, &ui.material_preset[material].hotend_temp, MINTEMP_ALL, MAXTEMP_ALL - HOTEND_OVERSHOOT);
+      EDIT_ITEM(uint16_3, MSG_NOZZLE, &ui.material_preset[m].hotend_temp, MINTEMP_ALL, MAXTEMP_ALL - HOTEND_OVERSHOOT);
     #endif
     #if HAS_HEATED_BED
-      EDIT_ITEM(int3, MSG_BED, &ui.material_preset[material].bed_temp, BED_MINTEMP, BED_MAX_TARGET);
+      EDIT_ITEM(uint16_3, MSG_BED, &ui.material_preset[m].bed_temp, BED_MINTEMP, BED_MAX_TARGET);
     #endif
     #if ENABLED(EEPROM_SETTINGS)
       ACTION_ITEM(MSG_STORE_EEPROM, ui.store_settings);

Marlin/src/lcd/menu/menu_temperature.cpp

       ACTION_ITEM_N_P(E, msg_preheat_h[M], []{ _preheat_both(M, MenuItemBase::itemIndex); }); \
       ACTION_ITEM_N_P(E, msg_preheat_end_e[M], []{ _preheat_end(M, MenuItemBase::itemIndex); }); \
     }while(0)
-    #if HAS_HEATED_BED
+
+    #if HAS_MULTI_HOTEND
       #define PREHEAT_ITEMS(M,E) _PREHEAT_ITEMS(M,E)
     #endif
-  #else
-    #define PREHEAT_ITEMS(M,E) ACTION_ITEM_N(E, msg_preheat_h[M], []{ _preheat_end(M, MenuItemBase::itemIndex); })
+
+  #elif HAS_MULTI_HOTEND
+
+    #define PREHEAT_ITEMS(M,E) ACTION_ITEM_N_P(E, msg_preheat_h[M], []{ _preheat_end(M, MenuItemBase::itemIndex); })
+
   #endif
 
   void menu_preheat_m(const uint8_t m) {
-    editable.int8 = m;
     #if HOTENDS == 1
       PGM_P msg_preheat[]     = ARRAY_N(PREHEAT_COUNT, GET_TEXT(MSG_PREHEAT_1),         GET_TEXT(MSG_PREHEAT_2),         GET_TEXT(MSG_PREHEAT_3),         GET_TEXT(MSG_PREHEAT_4),          GET_TEXT(MSG_PREHEAT_5));
       PGM_P msg_preheat_end[] = ARRAY_N(PREHEAT_COUNT, GET_TEXT(MSG_PREHEAT_1_END),     GET_TEXT(MSG_PREHEAT_2_END),     GET_TEXT(MSG_PREHEAT_3_END),     GET_TEXT(MSG_PREHEAT_4_END),      GET_TEXT(MSG_PREHEAT_5_END));
       PGM_P msg_preheat_all[] = ARRAY_N(PREHEAT_COUNT, GET_TEXT(MSG_PREHEAT_1_ALL),     GET_TEXT(MSG_PREHEAT_2_ALL),     GET_TEXT(MSG_PREHEAT_3_ALL),     GET_TEXT(MSG_PREHEAT_4_ALL),      GET_TEXT(MSG_PREHEAT_5_ALL));
     #endif
     PGM_P msg_preheat_end_e[] = ARRAY_N(PREHEAT_COUNT, GET_TEXT(MSG_PREHEAT_1_END_E),   GET_TEXT(MSG_PREHEAT_2_END_E),   GET_TEXT(MSG_PREHEAT_3_END_E),   GET_TEXT(MSG_PREHEAT_4_END_E),    GET_TEXT(MSG_PREHEAT_5_END_E));
-    PGM_P msg_preheat_bed[]   = ARRAY_N(PREHEAT_COUNT, GET_TEXT(MSG_PREHEAT_1_BEDONLY), GET_TEXT(MSG_PREHEAT_2_BEDONLY), GET_TEXT(MSG_PREHEAT_3_BEDONLY), GET_TEXT(MSG_PREHEAT_4_BEDONLY),  GET_TEXT(MSG_PREHEAT_5_BEDONLY));
-    PGM_P msg_preheat_h[]     = ARRAY_N(PREHEAT_COUNT, GET_TEXT(MSG_PREHEAT_1_H),       GET_TEXT(MSG_PREHEAT_2_H),       GET_TEXT(MSG_PREHEAT_3_H),       GET_TEXT(MSG_PREHEAT_4_H),        GET_TEXT(MSG_PREHEAT_5_H));
+
+    #if HAS_MULTI_HOTEND
+      PGM_P msg_preheat_h[]   = ARRAY_N(PREHEAT_COUNT, GET_TEXT(MSG_PREHEAT_1_H),       GET_TEXT(MSG_PREHEAT_2_H),       GET_TEXT(MSG_PREHEAT_3_H),       GET_TEXT(MSG_PREHEAT_4_H),        GET_TEXT(MSG_PREHEAT_5_H));
+    #endif
+
+    MenuItemBase::itemIndex = m;
 
     START_MENU();
     BACK_ITEM(MSG_TEMPERATURE);
+
     #if HOTENDS == 1
+
       #if HAS_HEATED_BED
-        ACTION_ITEM_P(msg_preheat[m], []{ _preheat_both(editable.int8, 0); });
-        ACTION_ITEM_P(msg_preheat_end[m], []{ _preheat_end(editable.int8, 0); });
+        ACTION_ITEM_P(msg_preheat[m], []{ _preheat_both(MenuItemBase::itemIndex, 0); });
+        ACTION_ITEM_P(msg_preheat_end[m], []{ _preheat_end(MenuItemBase::itemIndex, 0); });
       #else
-        ACTION_ITEM_P(msg_preheat[m], []{ _preheat_end(editable.int8, 0); });
+        ACTION_ITEM_P(msg_preheat[m], []{ _preheat_end(MenuItemBase::itemIndex, 0); });
       #endif
+
     #elif HAS_MULTI_HOTEND
+
       #if HAS_HEATED_BED
-        _PREHEAT_ITEMS(editable.int8,0);
+        _PREHEAT_ITEMS(MenuItemBase::itemIndex,0);
       #endif
-      LOOP_S_L_N(n, 1, HOTENDS) PREHEAT_ITEMS(editable.int8,n);
+
+      LOOP_S_L_N(n, 1, HOTENDS) PREHEAT_ITEMS(MenuItemBase::itemIndex,n);
       ACTION_ITEM_P(msg_preheat_all[m], []() {
-        TERN_(HAS_HEATED_BED, _preheat_bed(editable.int8));
-        HOTEND_LOOP() thermalManager.setTargetHotend(ui.material_preset[editable.int8].hotend_temp, e);
+        TERN_(HAS_HEATED_BED, _preheat_bed(MenuItemBase::itemIndex));
+        HOTEND_LOOP() thermalManager.setTargetHotend(ui.material_preset[MenuItemBase::itemIndex].hotend_temp, e);
       });
-    #endif // HAS_MULTI_HOTEND
+
+    #endif
+
     #if HAS_HEATED_BED
-      ACTION_ITEM_P(msg_preheat_bed[m], []{ _preheat_bed(editable.int8); });
+      PGM_P msg_preheat_bed[] = ARRAY_N(PREHEAT_COUNT, GET_TEXT(MSG_PREHEAT_1_BEDONLY), GET_TEXT(MSG_PREHEAT_2_BEDONLY), GET_TEXT(MSG_PREHEAT_3_BEDONLY), GET_TEXT(MSG_PREHEAT_4_BEDONLY), GET_TEXT(MSG_PREHEAT_5_BEDONLY));
+      ACTION_ITEM_P(msg_preheat_bed[m], []{ _preheat_bed(MenuItemBase::itemIndex); });
     #endif
+
     END_MENU();
   }
 

Marlin/src/module/temperature.cpp

 
 #if HAS_HOTEND
   hotend_info_t Temperature::temp_hotend[HOTEND_TEMPS]; // = { 0 }
-  const int16_t Temperature::heater_maxtemp[HOTENDS] = ARRAY_BY_HOTENDS(HEATER_0_MAXTEMP, HEATER_1_MAXTEMP, HEATER_2_MAXTEMP, HEATER_3_MAXTEMP, HEATER_4_MAXTEMP, HEATER_5_MAXTEMP, HEATER_6_MAXTEMP, HEATER_7_MAXTEMP);
+  const uint16_t Temperature::heater_maxtemp[HOTENDS] = ARRAY_BY_HOTENDS(HEATER_0_MAXTEMP, HEATER_1_MAXTEMP, HEATER_2_MAXTEMP, HEATER_3_MAXTEMP, HEATER_4_MAXTEMP, HEATER_5_MAXTEMP, HEATER_6_MAXTEMP, HEATER_7_MAXTEMP);
 #endif
 
 #if ENABLED(AUTO_POWER_E_FANS)

Marlin/src/module/temperature.h

     #if HAS_HOTEND
       #define HOTEND_TEMPS (HOTENDS + ENABLED(TEMP_SENSOR_1_AS_REDUNDANT))
       static hotend_info_t temp_hotend[HOTEND_TEMPS];
-      static const int16_t heater_maxtemp[HOTENDS];
+      static const uint16_t heater_maxtemp[HOTENDS];
     #endif
     TERN_(HAS_HEATED_BED, static bed_info_t temp_bed);
     TERN_(HAS_TEMP_PROBE, static probe_info_t temp_probe);