Add MKS UI (TFT_LITTLE_VGL_UI) (#18071)

Marlin/src/MarlinCore.cpp

@@ -59,6 +59,12 @@
 #include "gcode/parser.h"
 #include "gcode/queue.h"
 
+#if ENABLED(TFT_LITTLE_VGL_UI)
+  #include "lvgl.h"
+  #include "lcd/extui/lib/mks_ui/inc/tft_lvgl_configuration.h"
+  #include "lcd/extui/lib/mks_ui/inc/draw_ui.h"
+#endif
+
 #if ENABLED(DIRECT_STEPPING)
   #include "feature/direct_stepping.h"
 #endif
@@ -726,6 +732,10 @@ void idle(TERN_(ADVANCED_PAUSE_FEATURE, bool no_stepper_sleep/*=false*/)) {
 
   // Direct Stepping
   TERN_(DIRECT_STEPPING, page_manager.write_responses());
+
+  #if ENABLED(TFT_LITTLE_VGL_UI)
+    LV_TASK_HANDLER();
+  #endif
 }
 
 /**
@@ -1141,6 +1151,10 @@ void setup() {
     SETUP_RUN(page_manager.init());
   #endif
 
+  #if ENABLED(TFT_LITTLE_VGL_UI)
+    SETUP_RUN(tft_lvgl_init());
+  #endif
+
   marlin_state = MF_RUNNING;
 
   SETUP_LOG("setup() completed.");
@@ -1173,5 +1187,7 @@ void loop() {
 
     endstops.event_handler();
 
+    TERN_(TFT_LITTLE_VGL_UI, printer_state_polling());
+
   } while (ENABLED(__AVR__)); // Loop forever on slower (AVR) boards
 }