Finish, improve, clean up FYSETC_MINI_12864 revisions (#13871)

Marlin/src/inc/Conditionals_LCD.h

@@ -141,8 +141,9 @@
   #define DEFAULT_LCD_CONTRAST 150
   #define LCD_CONTRAST_MAX 255
 
-#elif ENABLED(FYSETC_MINI_12864)
+#elif ANY(FYSETC_MINI_12864_1_2, FYSETC_MINI_12864_2_0, FYSETC_MINI_12864_2_1)
 
+  #define FYSETC_MINI_12864
   #define DOGLCD
   #define ULTIPANEL
   #define LCD_CONTRAST_MIN 0
@@ -150,6 +151,16 @@
   #define DEFAULT_LCD_CONTRAST 255
   #define LED_COLORS_REDUCE_GREEN
 
+  // Require LED backlighting enabled
+  #if EITHER(FYSETC_MINI_12864_1_2, FYSETC_MINI_12864_2_0)
+    #define RGB_LED
+  #elif ENABLED(FYSETC_MINI_12864_2_1)
+    #define NEOPIXEL_LED
+    #define NEOPIXEL_TYPE       NEO_GRB
+    #define NEOPIXEL_PIXELS     3
+    #define NEOPIXEL_BRIGHTNESS 127
+  #endif
+
 #endif
 
 #if EITHER(MAKRPANEL, MINIPANEL)

Marlin/src/inc/SanityCheck.h

@@ -1766,7 +1766,9 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
   + ENABLED(G3D_PANEL) \
   + (ENABLED(MINIPANEL) && DISABLED(MKS_MINI_12864)) \
   + ENABLED(MKS_MINI_12864) \
-  + ENABLED(FYSETC_MINI_12864) \
+  + ENABLED(FYSETC_MINI_12864_1_2) \
+  + ENABLED(FYSETC_MINI_12864_2_0) \
+  + ENABLED(FYSETC_MINI_12864_2_1) \
   + (ENABLED(REPRAPWORLD_KEYPAD) && DISABLED(CARTESIO_UI, ZONESTAR_LCD)) \
   + ENABLED(RIGIDBOT_PANEL) \
   + ENABLED(RA_CONTROL_PANEL) \
@@ -1786,6 +1788,35 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
   #error "Please select no more than one LCD controller option."
 #endif
 
+/**
+ * FYSETC Mini 12864 RGB backlighting required
+ */
+#if EITHER(FYSETC_MINI_12864_1_2, FYSETC_MINI_12864_2_0) && DISABLED(RGB_LED)
+  #error "RGB_LED is required for FYSETC_MINI_12864 1.2 and 2.0."
+#elif EITHER(FYSETC_MINI_12864_2_0, FYSETC_MINI_12864_2_1) && DISABLED(LED_USER_PRESET_STARTUP)
+  #error "LED_USER_PRESET_STARTUP is required for FYSETC_MINI_12864 2.x displays."
+#elif ENABLED(FYSETC_MINI_12864_2_1)
+  #if DISABLED(NEOPIXEL_LED)
+    #error "NEOPIXEL_LED is required for FYSETC_MINI_12864 Rev. 2.1."
+  #elif NEOPIXEL_PIXELS != 3
+    #error "NEOPIXEL_PIXELS should be 3 for FYSETC_MINI_12864 Rev. 2.1."
+  #elif NEOPIXEL_BRIGHTNESS != 127
+    #error "NEOPIXEL_BRIGHTNESS should be 127 for FYSETC_MINI_12864 Rev. 2.1."
+  #else
+    #ifndef NEO_GRB
+      #define NEO_GRB 0xFAD
+      #define _UNDO_NEO_GRB
+    #endif
+    #if NEOPIXEL_TYPE != NEO_GRB
+      #error "NEOPIXEL_TYPE should be NEO_GRB for FYSETC_MINI_12864 Rev. 2.1."
+    #endif
+    #ifdef _UNDO_NEO_GRB
+      #undef NEO_GRB
+      #undef _UNDO_NEO_GRB
+    #endif
+  #endif
+#endif
+
 /**
  * Check existing CS pins against enabled TMC SPI drivers.
  */