UI: battery indicator, boot screen, radio settings

examples/simple_room_server/main.cpp

@@ -717,6 +717,9 @@ public:
   const char* getBuildDate() override { return FIRMWARE_BUILD_DATE; }
   const char* getRole() override { return FIRMWARE_ROLE; }
   const char* getNodeName() { return _prefs.node_name; }
+  NodePrefs* getNodePrefs() { 
+    return &_prefs; 
+  }
 
   void savePrefs() override {
     _cli.savePrefs(_fs);
@@ -899,7 +902,7 @@ void setup() {
   the_mesh.begin(fs);
 
 #ifdef DISPLAY_CLASS
-  ui_task.begin(the_mesh.getNodeName(), FIRMWARE_BUILD_DATE, FIRMWARE_VERSION);
+  ui_task.begin(the_mesh.getNodePrefs(), FIRMWARE_BUILD_DATE, FIRMWARE_VERSION);
 #endif
 
   // send out initial Advertisement to the mesh