Correct EEPROM read/write disparities. (#12169)

Marlin/src/module/configuration_store.cpp

@@ -37,7 +37,7 @@
  */
 
 // Change EEPROM version if the structure changes
-#define EEPROM_VERSION "V61"
+#define EEPROM_VERSION "V62"
 #define EEPROM_OFFSET 100
 
 // Check the integrity of data offsets.
@@ -194,10 +194,8 @@ typedef struct SettingsDataStruct {
   #elif ENABLED(X_DUAL_ENDSTOPS) || ENABLED(Y_DUAL_ENDSTOPS) || Z_MULTI_ENDSTOPS
     float x2_endstop_adj,                               // M666 X
           y2_endstop_adj,                               // M666 Y
-          z2_endstop_adj;                               // M666 Z
-    #if ENABLED(Z_TRIPLE_ENDSTOPS)
-      float z3_endstop_adj;                             // M666 Z
-    #endif
+          z2_endstop_adj,                               // M666 Z (S2)
+          z3_endstop_adj;                               // M666 Z (S3)
   #endif
 
   //
@@ -939,7 +937,7 @@ void MarlinSettings::postprocess() {
     // SINGLENOZZLE
     //
 
-    #if ENABLED(SINGLENOZZLE)
+    #if EXTRUDERS > 1
       _FIELD_TEST(toolchange_settings);
       EEPROM_WRITE(toolchange_settings);
     #endif
@@ -1567,7 +1565,7 @@ void MarlinSettings::postprocess() {
       //
       // SINGLENOZZLE toolchange values
       //
-      #if ENABLED(SINGLENOZZLE)
+      #if EXTRUDERS > 1
         _FIELD_TEST(toolchange_settings);
         EEPROM_READ(toolchange_settings);
       #endif
@@ -1831,9 +1829,6 @@ void MarlinSettings::reset(PORTARG_SOLO) {
   #endif
 
   #if EXTRUDERS > 1
-    toolchange_settings.z_raise = TOOLCHANGE_ZRAISE;
-  #endif
-  
     #if ENABLED(SINGLENOZZLE)
       toolchange_settings.swap_length = SINGLENOZZLE_SWAP_LENGTH;
       toolchange_settings.prime_speed = SINGLENOZZLE_SWAP_PRIME_SPEED;
@@ -1842,6 +1837,8 @@ void MarlinSettings::reset(PORTARG_SOLO) {
         toolchange_settings.change_point = SINGLENOZZLE_TOOLCHANGE_XY;
       #endif
     #endif
+    toolchange_settings.z_raise = TOOLCHANGE_ZRAISE;
+  #endif
 
   //
   // Global Leveling

Marlin/src/module/tool_change.h

@@ -26,12 +26,14 @@
 #if EXTRUDERS > 1
 
   typedef struct {
+    #if ENABLED(SINGLENOZZLE)
       float swap_length;
       int16_t prime_speed, retract_speed;
       #if ENABLED(SINGLENOZZLE_SWAP_PARK)
         struct { float x, y; } change_point;
       #endif
-    float z_raise = TOOLCHANGE_ZRAISE;
+    #endif
+    float z_raise;
   } toolchange_settings_t;
 
   extern toolchange_settings_t toolchange_settings;