diff --git a/lv_core/lv_indev.c b/lv_core/lv_indev.c
index 383f8b4b7..3d7b97690 100644
--- a/lv_core/lv_indev.c
+++ b/lv_core/lv_indev.c
@@ -253,6 +253,11 @@ static void indev_proc_task(void * param)
 {
     (void)param;
 
+
+#if USE_LV_LOG
+    lv_log_add(LV_LOG_LEVEL_DEBUG, __FILE__, __LINE__, "indev_proc task started");
+#endif
+
     lv_indev_data_t data;
     lv_indev_t * i;
     i = lv_indev_next(NULL);
@@ -291,6 +296,10 @@ static void indev_proc_task(void * param)
     }
 
     indev_act = NULL;   /*End of indev processing, so no act indev*/
+
+#if USE_LV_LOG
+    lv_log_add(LV_LOG_LEVEL_DEBUG, __FILE__, __LINE__, "indev_proc task finished");
+#endif
 }
 
 
diff --git a/lv_core/lv_refr.c b/lv_core/lv_refr.c
index f23b70a8b..6ad8972c6 100644
--- a/lv_core/lv_refr.c
+++ b/lv_core/lv_refr.c
@@ -167,6 +167,9 @@ void lv_refr_pop_from_buf(uint16_t num)
 static void lv_refr_task(void * param)
 {
     (void)param;
+#if USE_LV_LOG
+    lv_log_add(LV_LOG_LEVEL_DEBUG, __FILE__, __LINE__, "display refresh task started");
+#endif
 
     uint32_t start = lv_tick_get();
 
@@ -186,6 +189,9 @@ static void lv_refr_task(void * param)
             monitor_cb(lv_tick_elaps(start), px_num);
         }
     }
+#if USE_LV_LOG
+    lv_log_add(LV_LOG_LEVEL_DEBUG, __FILE__, __LINE__, "display refresh task finished");
+#endif
 }
 
 
diff --git a/lv_draw/lv_draw_vbasic.c b/lv_draw/lv_draw_vbasic.c
index a7187188e..ba75d4840 100644
--- a/lv_draw/lv_draw_vbasic.c
+++ b/lv_draw/lv_draw_vbasic.c
@@ -13,6 +13,7 @@
 #include "../lv_misc/lv_area.h"
 #include "../lv_misc/lv_font.h"
 #include "../lv_misc/lv_color.h"
+#include "../lv_misc/lv_log.h"
 
 #if LV_VDB_SIZE != 0
 
@@ -215,7 +216,12 @@ void lv_vletter(const lv_point_t * pos_p, const lv_area_t * mask_p,
                                          204, 221, 238, 255
                                         };
 
-    if(font_p == NULL) return;
+    if(font_p == NULL) {
+#if USE_LV_LOG
+    	lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Font: character's bitmap not found");
+#endif
+		return;
+    }
 
 
     lv_coord_t pos_x = pos_p->x;
diff --git a/lv_hal/lv_hal_disp.c b/lv_hal/lv_hal_disp.c
index 8c8e699a2..875b0d6b3 100644
--- a/lv_hal/lv_hal_disp.c
+++ b/lv_hal/lv_hal_disp.c
@@ -148,7 +148,22 @@ void lv_disp_fill(int32_t x1, int32_t y1, int32_t x2, int32_t y2, lv_color_t col
 void lv_disp_flush(int32_t x1, int32_t y1, int32_t x2, int32_t y2, lv_color_t * color_p)
 {
     if(active == NULL) return;
-    if(active->driver.disp_flush != NULL) active->driver.disp_flush(x1, y1, x2, y2, color_p);
+    if(active->driver.disp_flush != NULL) {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Disp. flush called");
+#endif
+    	active->driver.disp_flush(x1, y1, x2, y2, color_p);
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Disp. flush finished");
+#endif
+    } else {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Disp. flush: function not set");
+#endif
+    }
 }
 
 /**
diff --git a/lv_hal/lv_hal_indev.c b/lv_hal/lv_hal_indev.c
index d118a2272..c4dbdc949 100644
--- a/lv_hal/lv_hal_indev.c
+++ b/lv_hal/lv_hal_indev.c
@@ -111,8 +111,17 @@ bool lv_indev_read(lv_indev_t * indev, lv_indev_data_t * data)
 
     if(indev->driver.read) {
         data->user_data = indev->driver.user_data;
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Indev read called");
+#endif
         cont = indev->driver.read(data);
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Indev read finished");
+#endif
     } else {
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Indev read: function not set");
+#endif
         memset(data, 0, sizeof(lv_indev_data_t));
     }
 
diff --git a/lv_misc/lv_anim.c b/lv_misc/lv_anim.c
index 9b271289f..01cf7d9b3 100644
--- a/lv_misc/lv_anim.c
+++ b/lv_misc/lv_anim.c
@@ -62,6 +62,7 @@ void lv_anim_init(void)
  */
 void lv_anim_create(lv_anim_t * anim_p)
 {
+
     /* Do not let two animations for the  same 'var' with the same 'fp'*/
     if(anim_p->fp != NULL) lv_anim_del(anim_p->var, anim_p->fp);       /*fp == NULL would delete all animations of var*/
 
@@ -80,6 +81,11 @@ void lv_anim_create(lv_anim_t * anim_p)
     /* Creating an animation changed the linked list.
      * It's important if it happens in a ready callback. (see `anim_task`)*/
     anim_list_changed = true;
+
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Animation created");
+#endif
 }
 
 /**
diff --git a/lv_misc/lv_font.c b/lv_misc/lv_font.c
index 1e5c19cd3..3a55f96ec 100644
--- a/lv_misc/lv_font.c
+++ b/lv_misc/lv_font.c
@@ -8,6 +8,7 @@
  *********************/
 #include <stddef.h>
 #include "lv_font.h"
+#include "lv_log.h"
 
 /*********************
  *      DEFINES
@@ -103,6 +104,9 @@ const uint8_t * lv_font_get_bitmap(const lv_font_t * font_p, uint32_t letter)
         font_i = font_i->next_page;
     }
 
+#if USE_LV_LOG
+    if(letter >= ' ') lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Font: glyph not found");
+#endif
     return NULL;
 }
 
@@ -128,7 +132,11 @@ uint8_t lv_font_get_width(const lv_font_t * font_p, uint32_t letter)
         font_i = font_i->next_page;
     }
 
+#if USE_LV_LOG
+    if(letter >= ' ') lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Font: character's width not found");
+#endif
     return 0;
+
 }
 
 /**
@@ -148,6 +156,9 @@ uint8_t lv_font_get_real_width(const lv_font_t * font_p, uint32_t letter)
         font_i = font_i->next_page;
     }
 
+#if USE_LV_LOG
+    if(letter >= ' ') lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Font: character's width not found");
+#endif
     return 0;
 }
 
@@ -167,6 +178,9 @@ uint8_t lv_font_get_bpp(const lv_font_t * font, uint32_t letter)
         font_i = font_i->next_page;
     }
 
+#if USE_LV_LOG
+	if(letter >= ' ') lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Font: character's bpp not found");
+#endif
     return 0;
 
 }
diff --git a/lv_misc/lv_log.c b/lv_misc/lv_log.c
index b920cb57c..014cc0470 100644
--- a/lv_misc/lv_log.c
+++ b/lv_misc/lv_log.c
@@ -58,15 +58,11 @@ void lv_log_add(lv_log_level_t level, const char * file, uint32_t line, const ch
 {
 	if(level >= _LV_LOG_LEVEL_NUM) return;		/*Invalid level*/
 
-	if((level == LV_LOG_LEVEL_INFO && LV_LOG_INFO)  ||
-	   (level == LV_LOG_LEVEL_WARN && LV_LOG_WARN)  ||
-	   (level == LV_LOG_LEVEL_ERROR && LV_LOG_ERROR) ||
-	   (level == LV_LOG_LEVEL_USER && LV_LOG_USER))
-	{
+	if(level >= LV_LOG_LEVEL) {
 
 #if LV_LOG_PRINTF
-		static const char * lvl_prefix[] = {"Info", "Warn", "Error", "User"};
-		printf("%s %s:%d:   %s\n", lvl_prefix[level], file, line, dsc);
+		static const char * lvl_prefix[] = {"Debug", "Trace", "Info", "Warn", "Error"};
+		printf("%s: %s \t(%s #%d)\n", lvl_prefix[level], dsc,  file, line);
 #else
 		if(print_cb) print_cb(level, file, line, dsc);
 #endif
diff --git a/lv_misc/lv_log.h b/lv_misc/lv_log.h
index 228ca6fac..08b25fe33 100644
--- a/lv_misc/lv_log.h
+++ b/lv_misc/lv_log.h
@@ -27,10 +27,11 @@ extern "C" {
 /*Possible log level. For compatibility declare it independently from `USE_LV_LOG`*/
 typedef enum
 {
-	LV_LOG_LEVEL_INFO = 0,
-	LV_LOG_LEVEL_WARN,
-	LV_LOG_LEVEL_ERROR,
-	LV_LOG_LEVEL_USER,
+	LV_LOG_LEVEL_DEBUG = 0,	/*A lot of logs to show every detail*/
+	LV_LOG_LEVEL_TRACE,		/*Trace the most important calls*/
+	LV_LOG_LEVEL_INFO,		/*Log important events*/
+	LV_LOG_LEVEL_WARN,		/*Log if something unwanted happened but didn't caused problem*/
+	LV_LOG_LEVEL_ERROR,		/*Only critical issue, when the system may fail*/
 	_LV_LOG_LEVEL_NUM
 }lv_log_level_t;
 
diff --git a/lv_misc/lv_mem.c b/lv_misc/lv_mem.c
index 2da12c84c..45b6af434 100644
--- a/lv_misc/lv_mem.c
+++ b/lv_misc/lv_mem.c
@@ -159,6 +159,9 @@ void * lv_mem_alloc(uint32_t size)
     }
 #endif
 
+#if USE_LV_LOG
+	if(alloc == NULL) lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Couldn't allocate memory");
+#endif
     return alloc;
 }
 
@@ -241,6 +244,10 @@ void * lv_mem_realloc(void * data_p, uint32_t new_size)
         }
     }
 
+
+#if USE_LV_LOG
+	if(new_p == NULL) lv_log_add(LV_LOG_LEVEL_WARN, __FILE__, __LINE__, "Couldn't allocate memory");
+#endif
     return new_p;
 }
 
diff --git a/lv_misc/lv_mem.h b/lv_misc/lv_mem.h
index ae224cfbd..a4c3188ce 100644
--- a/lv_misc/lv_mem.h
+++ b/lv_misc/lv_mem.h
@@ -22,6 +22,7 @@ extern "C" {
 
 #include <stdint.h>
 #include <stddef.h>
+#include "lv_log.h"
 
 /*********************
  *      DEFINES
@@ -93,22 +94,20 @@ void lv_mem_monitor(lv_mem_monitor_t * mon_p);
  */
 uint32_t lv_mem_get_size(const void * data);
 
-/**
- * Halt o NULL pointer
- * p pointer to a memory
- */
-static inline  void lv_mem_assert(void *p)
-{
-    if(p == NULL) {
-        while(1);
-    }
-}
-
 
 /**********************
  *      MACROS
  **********************/
 
+/**
+ * Halt on NULL pointer
+ * p pointer to a memory
+ */
+#if USE_LV_LOG == 0
+# define  lv_mem_assert(p) {if(p == NULL) while(1); }
+#else
+# define  lv_mem_assert(p) {if(p == NULL) {lv_log_add(LV_LOG_LEVEL_ERROR, __FILE__, __LINE__, "Out of memory!"); while(1); }}
+#endif
 #ifdef __cplusplus
 } /* extern "C" */
 #endif
diff --git a/lv_misc/lv_task.c b/lv_misc/lv_task.c
index 9efead715..bfbc1a67e 100644
--- a/lv_misc/lv_task.c
+++ b/lv_misc/lv_task.c
@@ -56,6 +56,11 @@ void lv_task_init(void)
  */
 LV_ATTRIBUTE_TASK_HANDLER void lv_task_handler(void)
 {
+
+#if USE_LV_LOG
+    lv_log_add(LV_LOG_LEVEL_DEBUG, __FILE__, __LINE__, "lv_task_handler started");
+#endif
+
     static uint32_t idle_period_start = 0;
     static uint32_t handler_start = 0;
     static uint32_t busy_time = 0;
@@ -128,6 +133,10 @@ LV_ATTRIBUTE_TASK_HANDLER void lv_task_handler(void)
 
 
     }
+
+#if USE_LV_LOG
+    lv_log_add(LV_LOG_LEVEL_DEBUG, __FILE__, __LINE__, "lv_task_handler finished");
+#endif
 }
 
 /**
@@ -175,7 +184,6 @@ lv_task_t * lv_task_create(void (*task)(void *), uint32_t period, lv_task_prio_t
     new_lv_task->last_run = lv_tick_get();
 
     return new_lv_task;
-
 }
 
 /**
diff --git a/lv_objx/lv_arc.c b/lv_objx/lv_arc.c
index b26929d88..951175549 100644
--- a/lv_objx/lv_arc.c
+++ b/lv_objx/lv_arc.c
@@ -50,6 +50,11 @@ static lv_design_func_t ancestor_design;
  */
 lv_obj_t * lv_arc_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Arc create stared");
+#endif
+
     /*Create the ancestor of arc*/
     lv_obj_t * new_arc = lv_obj_create(par, copy);
     lv_mem_assert(new_arc);
@@ -85,6 +90,10 @@ lv_obj_t * lv_arc_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_arc);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Arc create ready");
+#endif
+
     return new_arc;
 }
 
diff --git a/lv_objx/lv_bar.c b/lv_objx/lv_bar.c
index 24ba5f2bd..1f8ca838c 100644
--- a/lv_objx/lv_bar.c
+++ b/lv_objx/lv_bar.c
@@ -52,6 +52,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_bar_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Bar create stared");
+#endif
+
     /*Create the ancestor basic object*/
     lv_obj_t * new_bar = lv_obj_create(par, copy);
     lv_mem_assert(new_bar);
@@ -97,6 +102,11 @@ lv_obj_t * lv_bar_create(lv_obj_t * par, lv_obj_t * copy)
 
         lv_bar_set_value(new_bar, ext->cur_value);
     }
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Bar create ready");
+#endif
+
     return new_bar;
 }
 
diff --git a/lv_objx/lv_btn.c b/lv_objx/lv_btn.c
index d59771105..12832b19e 100644
--- a/lv_objx/lv_btn.c
+++ b/lv_objx/lv_btn.c
@@ -67,6 +67,11 @@ static lv_point_t ink_point;
  */
 lv_obj_t * lv_btn_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Button create stared");
+#endif
+
     lv_obj_t * new_btn;
 
     new_btn = lv_cont_create(par, copy);
@@ -135,6 +140,11 @@ lv_obj_t * lv_btn_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_btn);
     }
 
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Button create raedy");
+#endif
+
     return new_btn;
 }
 
diff --git a/lv_objx/lv_btnm.c b/lv_objx/lv_btnm.c
index d1c39c45d..1519b286d 100644
--- a/lv_objx/lv_btnm.c
+++ b/lv_objx/lv_btnm.c
@@ -64,6 +64,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_btnm_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Button matrix create stared");
+#endif
+
     /*Create the ancestor object*/
     lv_obj_t * new_btnm = lv_obj_create(par, copy);
     lv_mem_assert(new_btnm);
@@ -121,6 +126,9 @@ lv_obj_t * lv_btnm_create(lv_obj_t * par, lv_obj_t * copy)
         ext->btn_id_tgl = copy_ext->btn_id_tgl;
         lv_btnm_set_map(new_btnm, lv_btnm_get_map(copy));
     }
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Button matrix create ready");
+#endif
 
     return new_btnm;
 }
diff --git a/lv_objx/lv_calendar.c b/lv_objx/lv_calendar.c
index c76d7d6f3..3078759e0 100644
--- a/lv_objx/lv_calendar.c
+++ b/lv_objx/lv_calendar.c
@@ -70,6 +70,11 @@ static const char * month_name[12] = {"January",   "February",   "March",    "Ap
  */
 lv_obj_t * lv_calendar_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Calendar create stared");
+#endif
+
     /*Create the ancestor of calendar*/
     lv_obj_t * new_calendar = lv_obj_create(par, copy);
     lv_mem_assert(new_calendar);
@@ -139,6 +144,11 @@ lv_obj_t * lv_calendar_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_calendar);
     }
 
+    #if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Calendar create ready");
+#endif
+
+
     return new_calendar;
 }
 
diff --git a/lv_objx/lv_cb.c b/lv_objx/lv_cb.c
index ba847397c..1c9f2f1a3 100644
--- a/lv_objx/lv_cb.c
+++ b/lv_objx/lv_cb.c
@@ -50,6 +50,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_cb_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Check box create stared");
+#endif
+
     /*Create the ancestor basic object*/
     lv_obj_t * new_cb = lv_btn_create(par, copy);
     lv_mem_assert(new_cb);
@@ -105,6 +110,11 @@ lv_obj_t * lv_cb_create(lv_obj_t * par, lv_obj_t * copy)
 
     lv_obj_set_design_func(ext->bullet, lv_bullet_design);
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Check box create ready");
+#endif
+
+
     return new_cb;
 }
 
diff --git a/lv_objx/lv_chart.c b/lv_objx/lv_chart.c
index 7984d5027..ea03d543a 100644
--- a/lv_objx/lv_chart.c
+++ b/lv_objx/lv_chart.c
@@ -57,6 +57,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_chart_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Chart create stared");
+#endif
+
     /*Create the ancestor basic object*/
     lv_obj_t * new_chart = lv_obj_create(par, copy);
     lv_mem_assert(new_chart);
@@ -111,6 +116,11 @@ lv_obj_t * lv_chart_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_chart);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Chart create ready");
+#endif
+
+
     return new_chart;
 }
 
diff --git a/lv_objx/lv_cont.c b/lv_objx/lv_cont.c
index 2205dc133..e00b6c0ea 100644
--- a/lv_objx/lv_cont.c
+++ b/lv_objx/lv_cont.c
@@ -62,6 +62,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_cont_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Container create stared");
+#endif
+
     /*Create a basic object*/
     lv_obj_t * new_cont = lv_obj_create(par, copy);
     lv_mem_assert(new_cont);
@@ -101,6 +106,10 @@ lv_obj_t * lv_cont_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_cont);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Container create ready");
+#endif
+
     return new_cont;
 }
 
diff --git a/lv_objx/lv_ddlist.c b/lv_objx/lv_ddlist.c
index 99621fb63..92bfab375 100644
--- a/lv_objx/lv_ddlist.c
+++ b/lv_objx/lv_ddlist.c
@@ -66,6 +66,11 @@ static lv_design_func_t  ancestor_design;
  */
 lv_obj_t * lv_ddlist_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Drop down list create stared");
+#endif
+
     /*Create the ancestor drop down list*/
     lv_obj_t * new_ddlist = lv_page_create(par, copy);
     lv_mem_assert(new_ddlist);
@@ -138,6 +143,10 @@ lv_obj_t * lv_ddlist_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_ddlist);
     }
 
+    #if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Drop down list create ready");
+#endif
+
     return new_ddlist;
 }
 
diff --git a/lv_objx/lv_gauge.c b/lv_objx/lv_gauge.c
index 2bf20a526..2b54d7bf0 100644
--- a/lv_objx/lv_gauge.c
+++ b/lv_objx/lv_gauge.c
@@ -60,6 +60,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_gauge_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Gauge create stared");
+#endif
+
     /*Create the ancestor gauge*/
     lv_obj_t * new_gauge = lv_lmeter_create(par, copy);
     lv_mem_assert(new_gauge);
@@ -111,6 +116,10 @@ lv_obj_t * lv_gauge_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_gauge);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Gauge create ready");
+#endif
+
     return new_gauge;
 }
 
diff --git a/lv_objx/lv_img.c b/lv_objx/lv_img.c
index 06d72c28e..307f41c82 100644
--- a/lv_objx/lv_img.c
+++ b/lv_objx/lv_img.c
@@ -54,6 +54,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_img_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Image create stared");
+#endif
+
     lv_obj_t * new_img = NULL;
 
     /*Create a basic object*/
@@ -97,6 +102,10 @@ lv_obj_t * lv_img_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_img);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Image create ready");
+#endif
+
     return new_img;
 }
 
diff --git a/lv_objx/lv_kb.c b/lv_objx/lv_kb.c
index 6caf32538..bd4968433 100644
--- a/lv_objx/lv_kb.c
+++ b/lv_objx/lv_kb.c
@@ -75,6 +75,11 @@ static const char * kb_map_num[] = {
  */
 lv_obj_t * lv_kb_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Keyboard create stared");
+#endif
+
     /*Create the ancestor of keyboard*/
     lv_obj_t * new_kb = lv_btnm_create(par, copy);
     lv_mem_assert(new_kb);
@@ -132,6 +137,10 @@ lv_obj_t * lv_kb_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_kb);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Keyboard create ready");
+#endif
+
     return new_kb;
 }
 
diff --git a/lv_objx/lv_label.c b/lv_objx/lv_label.c
index 0f7883329..cc09357f9 100644
--- a/lv_objx/lv_label.c
+++ b/lv_objx/lv_label.c
@@ -64,6 +64,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_label_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Label create stared");
+#endif
+
     /*Create a basic object*/
     lv_obj_t * new_label = lv_obj_create(par, copy);
     lv_mem_assert(new_label);
@@ -123,6 +128,12 @@ lv_obj_t * lv_label_create(lv_obj_t * par, lv_obj_t * copy)
         /*Refresh the style with new signal function*/
         lv_obj_refresh_style(new_label);
     }
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Label create ready");
+#endif
+
+
     return new_label;
 }
 
diff --git a/lv_objx/lv_led.c b/lv_objx/lv_led.c
index 0c5c3a6f3..9526f50ab 100644
--- a/lv_objx/lv_led.c
+++ b/lv_objx/lv_led.c
@@ -52,6 +52,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_led_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Led create stared");
+#endif
+
     /*Create the ancestor basic object*/
     lv_obj_t * new_led = lv_obj_create(par, copy);
     lv_mem_assert(new_led);
@@ -91,6 +96,10 @@ lv_obj_t * lv_led_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_led);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Led create ready");
+#endif
+
     return new_led;
 }
 
diff --git a/lv_objx/lv_line.c b/lv_objx/lv_line.c
index 17dfd2b5d..40f0d8941 100644
--- a/lv_objx/lv_line.c
+++ b/lv_objx/lv_line.c
@@ -50,6 +50,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_line_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Line create stared");
+#endif
+
     /*Create a basic object*/
     lv_obj_t * new_line = lv_obj_create(par, copy);
     lv_mem_assert(new_line);
@@ -87,6 +92,10 @@ lv_obj_t * lv_line_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_line);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Line create ready");
+#endif
+
     return new_line;
 }
 
diff --git a/lv_objx/lv_list.c b/lv_objx/lv_list.c
index 4789c75c8..a20b01cb5 100644
--- a/lv_objx/lv_list.c
+++ b/lv_objx/lv_list.c
@@ -71,6 +71,11 @@ static lv_obj_t * last_clicked_btn;
  */
 lv_obj_t * lv_list_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "List create stared");
+#endif
+
     /*Create the ancestor basic object*/
     lv_obj_t * new_list = lv_page_create(par, copy);
     lv_mem_assert(new_list);
@@ -138,6 +143,10 @@ lv_obj_t * lv_list_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_list);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "List create ready");
+#endif
+
     return new_list;
 }
 
diff --git a/lv_objx/lv_lmeter.c b/lv_objx/lv_lmeter.c
index ec7956871..913573ba7 100644
--- a/lv_objx/lv_lmeter.c
+++ b/lv_objx/lv_lmeter.c
@@ -52,6 +52,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_lmeter_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Line meter create stared");
+#endif
+
     /*Create the ancestor of line meter*/
     lv_obj_t * new_lmeter = lv_obj_create(par, copy);
     lv_mem_assert(new_lmeter);
@@ -100,6 +105,10 @@ lv_obj_t * lv_lmeter_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_lmeter);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Line meter create ready");
+#endif
+
     return new_lmeter;
 }
 
diff --git a/lv_objx/lv_mbox.c b/lv_objx/lv_mbox.c
index 004e5c41f..f4de404ea 100644
--- a/lv_objx/lv_mbox.c
+++ b/lv_objx/lv_mbox.c
@@ -60,6 +60,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_mbox_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Message box create stared");
+#endif
+
     /*Create the ancestor message box*/
     lv_obj_t * new_mbox = lv_cont_create(par, copy);
     lv_mem_assert(new_mbox);
@@ -113,6 +118,10 @@ lv_obj_t * lv_mbox_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_mbox);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Message box create ready");
+#endif
+
     return new_mbox;
 }
 
diff --git a/lv_objx/lv_objx_templ.c b/lv_objx/lv_objx_templ.c
index 3a97803eb..c86c25c4f 100644
--- a/lv_objx/lv_objx_templ.c
+++ b/lv_objx/lv_objx_templ.c
@@ -53,6 +53,11 @@ static lv_design_func_t ancestor_design;
  */
 lv_obj_t * lv_templ_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "template create stared");
+#endif
+
     /*Create the ancestor of template*/
     /*TODO modify it to the ancestor create function */
     lv_obj_t * new_templ = lv_ANCESTOR_create(par, copy);
@@ -82,6 +87,9 @@ lv_obj_t * lv_templ_create(lv_obj_t * par, lv_obj_t * copy)
         /*Refresh the style with new signal function*/
         lv_obj_refresh_style(new_templ);
     }
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "template create ready");
+#endif
 
     return new_templ;
 }
diff --git a/lv_objx/lv_page.c b/lv_objx/lv_page.c
index 4dff3b2f0..c3eaea1f0 100644
--- a/lv_objx/lv_page.c
+++ b/lv_objx/lv_page.c
@@ -57,6 +57,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_page_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Page create stared");
+#endif
+
     /*Create the ancestor object*/
     lv_obj_t * new_page = lv_cont_create(par, copy);
     lv_mem_assert(new_page);
@@ -140,6 +145,11 @@ lv_obj_t * lv_page_create(lv_obj_t * par, lv_obj_t * copy)
 
     lv_page_sb_refresh(new_page);
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Page create ready");
+#endif
+
+
     return new_page;
 }
 
diff --git a/lv_objx/lv_preload.c b/lv_objx/lv_preload.c
index 6df95c3a5..9867cac0e 100644
--- a/lv_objx/lv_preload.c
+++ b/lv_objx/lv_preload.c
@@ -55,6 +55,11 @@ static lv_design_func_t ancestor_design;
  */
 lv_obj_t * lv_preload_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Preloader create stared");
+#endif
+
     /*Create the ancestor of pre loader*/
     lv_obj_t * new_preload = lv_arc_create(par, copy);
     lv_mem_assert(new_preload);
@@ -104,6 +109,10 @@ lv_obj_t * lv_preload_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_preload);
     }
 
+    #if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Preloader create ready");
+#endif
+
     return new_preload;
 }
 
diff --git a/lv_objx/lv_roller.c b/lv_objx/lv_roller.c
index 0ae8a179c..671ac624c 100644
--- a/lv_objx/lv_roller.c
+++ b/lv_objx/lv_roller.c
@@ -60,6 +60,11 @@ static lv_signal_func_t ancestor_scrl_signal;
  */
 lv_obj_t * lv_roller_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Roller create stared");
+#endif
+
     /*Create the ancestor of roller*/
     lv_obj_t * new_roller = lv_ddlist_create(par, copy);
     lv_mem_assert(new_roller);
@@ -109,6 +114,10 @@ lv_obj_t * lv_roller_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_roller);        /*Refresh the style with new signal function*/
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Roller create ready");
+#endif
+
     return new_roller;
 }
 
diff --git a/lv_objx/lv_slider.c b/lv_objx/lv_slider.c
index 835207a42..841952060 100644
--- a/lv_objx/lv_slider.c
+++ b/lv_objx/lv_slider.c
@@ -53,6 +53,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_slider_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Slider create stared");
+#endif
+
     /*Create the ancestor slider*/
     lv_obj_t * new_slider = lv_bar_create(par, copy);
     lv_mem_assert(new_slider);
@@ -101,6 +106,10 @@ lv_obj_t * lv_slider_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_slider);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Slider create ready");
+#endif
+
     return new_slider;
 }
 
diff --git a/lv_objx/lv_sw.c b/lv_objx/lv_sw.c
index 457986c99..bac852a19 100644
--- a/lv_objx/lv_sw.c
+++ b/lv_objx/lv_sw.c
@@ -50,6 +50,11 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_sw_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Switch create stared");
+#endif
+
     /*Create the ancestor of switch*/
     lv_obj_t * new_sw = lv_slider_create(par, copy);
     lv_mem_assert(new_sw);
@@ -100,6 +105,10 @@ lv_obj_t * lv_sw_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_sw);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Switch create ready");
+#endif
+
     return new_sw;
 }
 
diff --git a/lv_objx/lv_ta.c b/lv_objx/lv_ta.c
index 16fc0f1c3..38dbff42f 100644
--- a/lv_objx/lv_ta.c
+++ b/lv_objx/lv_ta.c
@@ -74,6 +74,11 @@ static lv_signal_func_t scrl_signal;
  */
 lv_obj_t * lv_ta_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Text area create stared");
+#endif
+
     /*Create the ancestor object*/
     lv_obj_t * new_ta = lv_page_create(par, copy);
     lv_mem_assert(new_ta);
@@ -162,6 +167,10 @@ lv_obj_t * lv_ta_create(lv_obj_t * par, lv_obj_t * copy)
     lv_anim_create(&a);
 #endif
 
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Text area create ready");
+#endif
     return new_ta;
 }
 
diff --git a/lv_objx/lv_tabview.c b/lv_objx/lv_tabview.c
index 5ee4c4a87..f003ce430 100644
--- a/lv_objx/lv_tabview.c
+++ b/lv_objx/lv_tabview.c
@@ -66,6 +66,12 @@ static const char * tab_def[] = {""};
  */
 lv_obj_t * lv_tabview_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Tabview create stared");
+#endif
+
+
     /*Create the ancestor of tab*/
     lv_obj_t * new_tabview = lv_obj_create(par, copy);
     lv_mem_assert(new_tabview);
@@ -170,6 +176,10 @@ lv_obj_t * lv_tabview_create(lv_obj_t * par, lv_obj_t * copy)
         lv_obj_refresh_style(new_tabview);
     }
 
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Tabview create ready");
+#endif
+
     return new_tabview;
 }
 
@@ -811,7 +821,6 @@ static void tabview_realign(lv_obj_t * tabview)
         pages = lv_obj_get_child(ext->content, pages);
     }
 
-
     lv_obj_align(ext->indic, ext->btns, LV_ALIGN_IN_BOTTOM_LEFT, 0, 0);
 
     lv_tabview_set_tab_act(tabview, ext->tab_cur, false);
diff --git a/lv_objx/lv_win.c b/lv_objx/lv_win.c
index b3ab5f166..f1c4ada5b 100644
--- a/lv_objx/lv_win.c
+++ b/lv_objx/lv_win.c
@@ -46,6 +46,12 @@ static lv_signal_func_t ancestor_signal;
  */
 lv_obj_t * lv_win_create(lv_obj_t * par, lv_obj_t * copy)
 {
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_TRACE, __FILE__, __LINE__, "Window create stared");
+#endif
+
+
     /*Create the ancestor object*/
     lv_obj_t * new_win = lv_obj_create(par, copy);
     lv_mem_assert(new_win);
@@ -96,16 +102,13 @@ lv_obj_t * lv_win_create(lv_obj_t * par, lv_obj_t * copy)
             lv_win_set_style(new_win, LV_WIN_STYLE_CONTENT_SCRL, th->win.content.scrl);
             lv_win_set_style(new_win, LV_WIN_STYLE_BTN_REL, th->win.btn.rel);
             lv_win_set_style(new_win, LV_WIN_STYLE_BTN_PR, th->win.btn.pr);
-
         } else {
             lv_win_set_style(new_win, LV_WIN_STYLE_BG, &lv_style_plain);
             lv_win_set_style(new_win, LV_WIN_STYLE_CONTENT_BG, &lv_style_transp);
             lv_win_set_style(new_win, LV_WIN_STYLE_CONTENT_SCRL, &lv_style_transp);
             lv_win_set_style(new_win, LV_WIN_STYLE_HEADER, &lv_style_plain_color);
-
         }
 
-
         lv_obj_set_signal_func(new_win, lv_win_signal);
         lv_obj_set_size(new_win, LV_HOR_RES, LV_VER_RES);
     }
@@ -137,6 +140,12 @@ lv_obj_t * lv_win_create(lv_obj_t * par, lv_obj_t * copy)
 
     lv_win_realign(new_win);
 
+
+
+#if USE_LV_LOG
+	lv_log_add(LV_LOG_LEVEL_INFO, __FILE__, __LINE__, "Window create ready");
+#endif
+
     return new_win;
 }