default.diff

diff --git a/src/HAEntity.cpp b/src/HAEntity.cpp
index 8656cc5..e4ebb5e 100644
--- a/src/HAEntity.cpp
+++ b/src/HAEntity.cpp
@@ -82,8 +82,11 @@ void HAEntity::detach(IObserver* observer)
   observers.erase(observer);
 }
 
+extern std::mutex LVlock;
+
 void HAEntity::notify()
 {
+  std::unique_lock<std::mutex> lvlock(LVlock);
   for (const auto& obs : observers) {
     obs->uiupdate();
   }
diff --git a/src/front-lvgl.cpp b/src/front-lvgl.cpp
index 9fc1201..66e42e5 100644
--- a/src/front-lvgl.cpp
+++ b/src/front-lvgl.cpp
@@ -82,6 +82,8 @@ static void slider_event_cb(lv_event_t* e)
   }
 }
 
+extern std::mutex LVlock;
+
 void uithread(HABackend& backend, int argc, char* argv[])
 {
   argparse::ArgumentParser program("client-lvgl");
@@ -232,8 +234,11 @@ void uithread(HABackend& backend, int argc, char* argv[])
   i = 0;
   while (true) {
     usleep(5 * 1000); // 5000 usec = 5 ms
-    lv_tick_inc(5); // 5 ms
-    lv_task_handler();
+    {
+      std::unique_lock<std::mutex> lvlock(LVlock);
+      lv_tick_inc(5); // 5 ms
+      lv_task_handler();
+    }
     if (i++ == (1000 / 5)) {
       cerr << "." << flush;
       i = 0;
diff --git a/src/lv_conf.h b/src/lv_conf.h
index 9c6b729..ebe127f 100644
--- a/src/lv_conf.h
+++ b/src/lv_conf.h
@@ -230,7 +230,7 @@
  *-----------*/
 
 /*Enable the log module*/
-#define LV_USE_LOG 0
+#define LV_USE_LOG 1
 #if LV_USE_LOG
 
     /*How important log should be added:
diff --git a/src/main.cpp b/src/main.cpp
index f603072..bb50c0f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -19,6 +19,8 @@ using std::string;
 
 extern void uithread(HABackend& backend, int /* argc */, char*[] /* argv[] */);
 
+std::mutex LVlock;
+
 std::string GetEnv(std::string key)
 {
   auto value = getenv(key.c_str());
diff --git a/src/uicomponents/uirgblight.cpp b/src/uicomponents/uirgblight.cpp
index 0daec57..3184f26 100644
--- a/src/uicomponents/uirgblight.cpp
+++ b/src/uicomponents/uirgblight.cpp
@@ -175,10 +175,13 @@ void UIRGBLight::uiupdate()
   auto state = entity->getJsonState();
   string colormode = getColorMode();
   // std::cerr << "COLOR MODE: " << colormode << std::endl;
+  std::cerr<<"this="<<this<<std::endl;
   std::cerr << "UPDATED STATE FOR " << entity->name << ":" << state.dump(2) << std::endl;
   if (state["state"] == "on") { // FIXME: We should get rid of parsing JSON here
     lv_obj_add_state(btnOnOff, LV_STATE_CHECKED);
     int brightness = state["attributes"]["brightness"].get<int>(); // brightness is NULL If the thing is off
+    std::cerr<<"got brightness "<<brightness<<std::endl;
+    std::cerr<<"slider="<<brightnessSlider<<std::endl;
     lv_slider_set_value(brightnessSlider, brightness, LV_ANIM_OFF);
     int brightnessPercent = static_cast<int>(brightness / 2.55);
     std::string strBrightnessPercent = std::to_string(brightnessPercent);
@@ -295,6 +298,7 @@ void UIRGBLight::btnColorTemp_cb(lv_event_t* e)
 
 void UIRGBLight::brightness_slide_cb(lv_event_t* e)
 {
+  std::cerr<<"brightness_slide_cb"<<std::endl;
   lv_event_code_t code = lv_event_get_code(e);
   if (code == LV_EVENT_VALUE_CHANGED) {
     auto slidervalue = lv_slider_get_value(e->target);