8 Extruders + Graphical LCD fix (#18079)

Marlin/src/lcd/dogm/dogm_Statusscreen.h

   #ifndef STATUS_HOTEND6_WIDTH
     #define STATUS_HOTEND6_WIDTH STATUS_HOTEND5_WIDTH
   #endif
+  #ifndef STATUS_HOTEND7_WIDTH
+    #define STATUS_HOTEND7_WIDTH STATUS_HOTEND6_WIDTH
+  #endif
+  #ifndef STATUS_HOTEND8_WIDTH
+    #define STATUS_HOTEND8_WIDTH STATUS_HOTEND7_WIDTH
+  #endif
 
-  constexpr uint8_t status_hotend_width[HOTENDS] = ARRAY_N(HOTENDS, STATUS_HOTEND1_WIDTH, STATUS_HOTEND2_WIDTH, STATUS_HOTEND3_WIDTH, STATUS_HOTEND4_WIDTH, STATUS_HOTEND5_WIDTH, STATUS_HOTEND6_WIDTH);
+  constexpr uint8_t status_hotend_width[HOTENDS] = ARRAY_N(HOTENDS, STATUS_HOTEND1_WIDTH, STATUS_HOTEND2_WIDTH, STATUS_HOTEND3_WIDTH, STATUS_HOTEND4_WIDTH, STATUS_HOTEND5_WIDTH, STATUS_HOTEND6_WIDTH, STATUS_HOTEND7_WIDTH, STATUS_HOTEND8_WIDTH);
   #define STATUS_HOTEND_WIDTH(N) status_hotend_width[N]
 
   #ifndef STATUS_HOTEND1_BYTEWIDTH
   #ifndef STATUS_HOTEND6_BYTEWIDTH
     #define STATUS_HOTEND6_BYTEWIDTH BW(STATUS_HOTEND6_WIDTH)
   #endif
+  #ifndef STATUS_HOTEND7_BYTEWIDTH
+    #define STATUS_HOTEND7_BYTEWIDTH BW(STATUS_HOTEND7_WIDTH)
+  #endif
+  #ifndef STATUS_HOTEND8_BYTEWIDTH
+    #define STATUS_HOTEND8_BYTEWIDTH BW(STATUS_HOTEND8_WIDTH)
+  #endif
 
-  constexpr uint8_t status_hotend_bytewidth[HOTENDS] = ARRAY_N(HOTENDS, STATUS_HOTEND1_BYTEWIDTH, STATUS_HOTEND2_BYTEWIDTH, STATUS_HOTEND3_BYTEWIDTH, STATUS_HOTEND4_BYTEWIDTH, STATUS_HOTEND5_BYTEWIDTH, STATUS_HOTEND6_BYTEWIDTH);
+  constexpr uint8_t status_hotend_bytewidth[HOTENDS] = ARRAY_N(HOTENDS, STATUS_HOTEND1_BYTEWIDTH, STATUS_HOTEND2_BYTEWIDTH, STATUS_HOTEND3_BYTEWIDTH, STATUS_HOTEND4_BYTEWIDTH, STATUS_HOTEND5_BYTEWIDTH, STATUS_HOTEND6_BYTEWIDTH, STATUS_HOTEND7_BYTEWIDTH, STATUS_HOTEND8_BYTEWIDTH);
   #define STATUS_HOTEND_BYTEWIDTH(N) status_hotend_bytewidth[N]
 
   #ifndef STATUS_HOTEND1_X
     #ifndef STATUS_HOTEND6_X
       #define STATUS_HOTEND6_X STATUS_HOTEND5_X + STATUS_HEATERS_XSPACE
     #endif
+    #ifndef STATUS_HOTEND7_X
+      #define STATUS_HOTEND7_X STATUS_HOTEND6_X + STATUS_HEATERS_XSPACE
+    #endif
+    #ifndef STATUS_HOTEND8_X
+      #define STATUS_HOTEND8_X STATUS_HOTEND7_X + STATUS_HEATERS_XSPACE
+    #endif
 
-    constexpr uint8_t status_hotend_x[HOTENDS] = ARRAY_N(HOTENDS, STATUS_HOTEND1_X, STATUS_HOTEND2_X, STATUS_HOTEND3_X, STATUS_HOTEND4_X, STATUS_HOTEND5_X, STATUS_HOTEND6_X);
+    constexpr uint8_t status_hotend_x[HOTENDS] = ARRAY_N(HOTENDS, STATUS_HOTEND1_X, STATUS_HOTEND2_X, STATUS_HOTEND3_X, STATUS_HOTEND4_X, STATUS_HOTEND5_X, STATUS_HOTEND6_X, STATUS_HOTEND7_X, STATUS_HOTEND8_X);
     #define STATUS_HOTEND_X(N) status_hotend_x[N]
   #elif HAS_MULTI_HOTEND
     #define STATUS_HOTEND_X(N) ((N) ? STATUS_HOTEND2_X : STATUS_HOTEND1_X)
       #ifndef STATUS_HOTEND6_TEXT_X
         #define STATUS_HOTEND6_TEXT_X STATUS_HOTEND5_TEXT_X + STATUS_HEATERS_XSPACE
       #endif
-      constexpr uint8_t status_hotend_text_x[] = ARRAY_N(HOTENDS, STATUS_HOTEND1_TEXT_X, STATUS_HOTEND2_TEXT_X, STATUS_HOTEND3_TEXT_X, STATUS_HOTEND4_TEXT_X, STATUS_HOTEND5_TEXT_X, STATUS_HOTEND6_TEXT_X);
+      #ifndef STATUS_HOTEND7_TEXT_X
+        #define STATUS_HOTEND7_TEXT_X STATUS_HOTEND6_TEXT_X + STATUS_HEATERS_XSPACE
+      #endif
+      #ifndef STATUS_HOTEND8_TEXT_X
+        #define STATUS_HOTEND8_TEXT_X STATUS_HOTEND7_TEXT_X + STATUS_HEATERS_XSPACE
+      #endif      
+      constexpr uint8_t status_hotend_text_x[] = ARRAY_N(HOTENDS, STATUS_HOTEND1_TEXT_X, STATUS_HOTEND2_TEXT_X, STATUS_HOTEND3_TEXT_X, STATUS_HOTEND4_TEXT_X, STATUS_HOTEND5_TEXT_X, STATUS_HOTEND6_TEXT_X, STATUS_HOTEND7_TEXT_X, STATUS_HOTEND8_TEXT_X);
       #define STATUS_HOTEND_TEXT_X(N) status_hotend_text_x[N]
     #else
       #define STATUS_HOTEND_TEXT_X(N) (STATUS_HOTEND1_X + 6 + (N) * (STATUS_HEATERS_XSPACE))

buildroot/share/tests/BIGTREE_GTR_V1_0-tests

 opt_set E2_AUTO_FAN_PIN PC12
 opt_set X_DRIVER_TYPE TMC2208
 opt_set Y_DRIVER_TYPE TMC2130
+opt_enable REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
 exec_test $1 $2 "BigTreeTech GTR 8 Extruders with Auto-Fan and Mixed TMC Drivers"
 
 restore_configs