diff --git a/src/W800 SDK v1.00.08/Makefile b/src/W800 SDK v1.00.08/Makefile
index f098bdd..16dc8b2 100644
--- a/src/W800 SDK v1.00.08/Makefile	
+++ b/src/W800 SDK v1.00.08/Makefile	
@@ -5,7 +5,8 @@ ifndef PDIR # {
 GEN_IMAGES= $(TARGET).elf
 GEN_BINS = $(TARGET).bin
 SUBDIRS = \
-    $(TOP_DIR)/app
+    $(TOP_DIR)/app \
+	$(TOP_DIR)/lvgl
 endif # } PDIR
 
 ifndef PDIR # {
@@ -29,7 +30,8 @@ endif
 endif
 
 COMPONENTS_$(TARGET) =	\
-    $(TOP_DIR)/app/libuser$(LIB_EXT)
+    $(TOP_DIR)/app/libuser$(LIB_EXT) \
+	$(TOP_DIR)/lvgl/liblvgl$(LIB_EXT)
 
 ifeq ($(USE_LIB), 0)
 COMPONENTS_$(TARGET) += \
diff --git a/src/W800 SDK v1.00.08/include/platform/wm_mem.h b/src/W800 SDK v1.00.08/include/platform/wm_mem.h
index bf029f8..655b1d4 100644
--- a/src/W800 SDK v1.00.08/include/platform/wm_mem.h	
+++ b/src/W800 SDK v1.00.08/include/platform/wm_mem.h	
@@ -84,6 +84,7 @@ void * mem_alloc_debug(u32 size);
 void mem_free_debug(void *p);
 void * mem_realloc_debug(void *mem_address, u32 size);
 void *mem_calloc_debug(u32 length, u32 size);
+u32 tls_mem_get_avail_heapsize(void);
 
 /**
  * @defgroup System_APIs System APIs
diff --git a/src/W800 SDK v1.00.08/platform/common/mem/wm_mem.c b/src/W800 SDK v1.00.08/platform/common/mem/wm_mem.c
index a866bed..9c09bb2 100644
--- a/src/W800 SDK v1.00.08/platform/common/mem/wm_mem.c	
+++ b/src/W800 SDK v1.00.08/platform/common/mem/wm_mem.c	
@@ -773,7 +773,7 @@ u32 tls_mem_get_avail_heapsize(void)
    // tls_os_release_critical(cpu_sr);	
 	tls_os_sem_release(mem_sem);
 
-	return availablemem&0xFFFFF000;
+	return availablemem/*&0xFFFFF000*/;
 #else
 	u8 *p = NULL;
 	u32 startpos = 0;
diff --git a/src/W800 SDK v1.00.08/platform/sys/wm_main.c b/src/W800 SDK v1.00.08/platform/sys/wm_main.c
index 6634bf8..d148914 100644
--- a/src/W800 SDK v1.00.08/platform/sys/wm_main.c	
+++ b/src/W800 SDK v1.00.08/platform/sys/wm_main.c	
@@ -216,7 +216,7 @@ int main(void)
     u32 value = 0;
 
 	/*standby reason setting in here,because pmu irq will clear it.*/
-	if ((tls_reg_read32(HR_PMU_INTERRUPT_SRC)>>7)&0x1)
+	if( (tls_reg_read32(HR_PMU_INTERRUPT_SRC) >> 8) & 0x1)
 	{
 		tls_sys_set_reboot_reason(REBOOT_REASON_STANDBY);
 	}
diff --git a/src/W800 SDK v1.00.08/src/os/rtos/include/task.h b/src/W800 SDK v1.00.08/src/os/rtos/include/task.h
index f05b6fc..de84968 100644
--- a/src/W800 SDK v1.00.08/src/os/rtos/include/task.h	
+++ b/src/W800 SDK v1.00.08/src/os/rtos/include/task.h	
@@ -1799,11 +1799,14 @@ UBaseType_t uxTaskGetSystemState( TaskStatus_t * const pxTaskStatusArray,
  * will be written, in ASCII form.  This buffer is assumed to be large
  * enough to contain the generated report.  Approximately 40 bytes per
  * task should be sufficient.
+ * @param uxWriteBufferSize The size of the pre-allocated string buffer in bytes, the NULL terminating character is included in the size.
+ * 
+ * @return The number of bytes or characters written to the buffer
  *
  * \defgroup vTaskList vTaskList
  * \ingroup TaskUtils
  */
-void vTaskList( char * pcWriteBuffer ) PRIVILEGED_FUNCTION;     /*lint !e971 Unqualified char types are allowed for strings and single characters only. */
+UBaseType_t vTaskList( char * pcWriteBuffer, UBaseType_t uxWriteBufferSize) PRIVILEGED_FUNCTION;     /*lint !e971 Unqualified char types are allowed for strings and single characters only. */
 
 /**
  * task. h
diff --git a/src/W800 SDK v1.00.08/src/os/rtos/source/tasks.c b/src/W800 SDK v1.00.08/src/os/rtos/source/tasks.c
index 1029cc6..e2bae4b 100644
--- a/src/W800 SDK v1.00.08/src/os/rtos/source/tasks.c	
+++ b/src/W800 SDK v1.00.08/src/os/rtos/source/tasks.c	
@@ -4516,11 +4516,25 @@ static void prvResetNextTaskUnblockTime( void )
 
 #if ( ( configUSE_TRACE_FACILITY == 1 ) && ( configUSE_STATS_FORMATTING_FUNCTIONS > 0 ) && ( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) )
 
-    void vTaskList( char * pcWriteBuffer )
+    UBaseType_t vTaskList( char * pcWriteBuffer, UBaseType_t uxWriteBufferSize)
     {
+        /*
+         * If there is no space allocated for the buffer, we do not print anything.
+         */
+        if(!uxWriteBufferSize || !pcWriteBuffer)
+        {
+            return 0;
+        }
+ 
+
         TaskStatus_t * pxTaskStatusArray;
         UBaseType_t uxArraySize, x;
         char cStatus;
+        /* We save here the start address of our buffer, it'll be used to compute the written size at the end. */
+        char *startOfWriteBuffer = pcWriteBuffer;
+        /* We reserve the last byte for the string terminating character : \0*/
+        uxWriteBufferSize--;
+
         unsigned short usStackRemaining = 0, usCurStack = 0;
 
         /*
@@ -4549,8 +4563,20 @@ static void prvResetNextTaskUnblockTime( void )
 
 
         /* Make sure the write buffer does not contain a string. */
-        //*pcWriteBuffer = ( char ) 0x00;
-        pcWriteBuffer += strlen(strcpy(pcWriteBuffer,"task\t\ttask num\ttask prio\ttask status\tstack total\tstack remain\tstack least remain\tmin stack space\r\n"));
+       
+        strncpy(pcWriteBuffer,"task\t\ttask num\ttask prio\ttask status\tstack total\tstack remain\tstack least remain\tmin stack space\r\n", uxWriteBufferSize);
+        pcWriteBuffer[uxWriteBufferSize] = '\0';
+        UBaseType_t writtenSize = strlen(pcWriteBuffer);
+        /* We move the string pointer n bytes to be ready to write the next data. */
+        pcWriteBuffer += writtenSize;
+        /* We update the remaining size. */
+        uxWriteBufferSize -= writtenSize;
+
+        /* We check if we still have space for the name of the first task.*/
+        if(uxWriteBufferSize < configMAX_TASK_NAME_LEN)
+        {
+            return writtenSize;
+        }
 
         /* Take a snapshot of the number of tasks in case it changes while this
          * function is executing. */
@@ -4615,12 +4641,18 @@ static void prvResetNextTaskUnblockTime( void )
 				}
 				#endif
 
+                /* We save the start of the buffer to be able to compute the written task name length. */
+                char *startOfbuffer = pcWriteBuffer;
                 /* Write the task name to the string, padding with spaces so it
                  * can be printed in tabular form more easily. */
                 pcWriteBuffer = prvWriteNameToBuffer( pcWriteBuffer, pxTaskStatusArray[ x ].pcTaskName );
+                /* We compute the task name written length. */
+                writtenSize = pcWriteBuffer - startOfbuffer;
+                /* We update our buffer size by removing what we just wrote. */
+                uxWriteBufferSize -= writtenSize;
 
                 /* Write the rest of the string. */
-                sprintf( pcWriteBuffer, "\t\t%lu\t\t%u\t\t%c\t\t%u\t\t%u\t\t%u\t\t%u\t\r\n",
+                writtenSize = snprintf(pcWriteBuffer, uxWriteBufferSize, "\t\t%lu\t\t%u\t\t%c\t\t%u\t\t%u\t\t%u\t\t%u\t\r\n",
                 pxTaskStatusArray[ x ].xTaskNumber,
                 ( unsigned int ) (configMAX_PRIORITIES - pxTaskStatusArray[ x ].uxCurrentPriority),
                 cStatus,
@@ -4629,7 +4661,19 @@ static void prvResetNextTaskUnblockTime( void )
                 ( unsigned int )usStackRemaining,
                 pxTaskStatusArray[ x ].usStackHighWaterMark ); /*lint !e586 sprintf() allowed as this is compiled with many compilers and this is a utility function only - not part of the core kernel implementation. */
                 
-                pcWriteBuffer += strlen( pcWriteBuffer );                                                                                                                                                                                                /*lint !e9016 Pointer arithmetic ok on char pointers especially as in this case where it best denotes the intent of the code. */
+                /* If what we tried to write is bigger than the space which was left in the buffer, then we set the remaining space to 0. */
+                uxWriteBufferSize -= writtenSize > uxWriteBufferSize ? uxWriteBufferSize : writtenSize;
+                
+                /* We check if we have space for the next task name. */
+                if(uxWriteBufferSize >= configMAX_TASK_NAME_LEN)
+                {
+                    pcWriteBuffer += writtenSize; /*lint !e9016 Pointer arithmetic ok on char pointers especially as in this case where it best denotes the intent of the code. */
+                }
+                /* This means no space left so we exit the loop. */
+                else
+                {
+                    break;
+                }
             }
 
             /* Free the array again.  NOTE!  If configSUPPORT_DYNAMIC_ALLOCATION
@@ -4639,7 +4683,14 @@ static void prvResetNextTaskUnblockTime( void )
         else
         {
             mtCOVERAGE_TEST_MARKER();
+            return 0;
         }
+
+        /* We don't forget to add the string NULL terminating character. */
+        *pcWriteBuffer = '\0';
+
+        /* We return the number of bytes written during the whole operation. */
+        return pcWriteBuffer - startOfWriteBuffer;
     }
 
 #endif /* ( ( configUSE_TRACE_FACILITY == 1 ) && ( configUSE_STATS_FORMATTING_FUNCTIONS > 0 ) && ( configSUPPORT_DYNAMIC_ALLOCATION == 1 ) ) */
diff --git a/src/W800 SDK v1.00.08/src/os/rtos/wm_osal_rtos.c b/src/W800 SDK v1.00.08/src/os/rtos/wm_osal_rtos.c
index fc5e545..000ab79 100644
--- a/src/W800 SDK v1.00.08/src/os/rtos/wm_osal_rtos.c	
+++ b/src/W800 SDK v1.00.08/src/os/rtos/wm_osal_rtos.c	
@@ -1437,7 +1437,7 @@ void tls_os_disp_task_stat_info(void)
 	if(NULL == buf)
 		return;
 #if configUSE_TRACE_FACILITY
-	vTaskList((char *)buf);
+	vTaskList((char *)buf, 1024);
 #endif
 	printf("\n%s",buf);
 	tls_mem_free(buf);
diff --git a/src/W800 SDK v1.00.08/tools/w800/inc.mk b/src/W800 SDK v1.00.08/tools/w800/inc.mk
index 2647f69..5906484 100644
--- a/src/W800 SDK v1.00.08/tools/w800/inc.mk	
+++ b/src/W800 SDK v1.00.08/tools/w800/inc.mk	
@@ -43,6 +43,14 @@ INCLUDES += -I $(TOP_DIR)/src/os/rtos/include
 
 INCLUDES += -I $(TOP_DIR)/src/app/factorycmd
 INCLUDES += -I $(TOP_DIR)/src/app/bleapp
+INCLUDES += -I $(TOP_DIR)/app/app_include
+INCLUDES += -I $(TOP_DIR)/app
+
+#lvgl include
+INCLUDES += -I $(TOP_DIR)/lvgl/lvgl_v8.3
+INCLUDES += -I $(TOP_DIR)/lvgl/lvgl_port
+
+
 #nimble host
 INCLUDES += -I $(TOP_DIR)/src/bt/blehost/ext/tinycrypt/include
 INCLUDES += -I $(TOP_DIR)/src/bt/blehost/nimble/host/include
diff --git a/src/W800 SDK v1.00.08/tools/w800/rules.mk b/src/W800 SDK v1.00.08/tools/w800/rules.mk
index dec9c54..f8faa80 100644
--- a/src/W800 SDK v1.00.08/tools/w800/rules.mk	
+++ b/src/W800 SDK v1.00.08/tools/w800/rules.mk	
@@ -57,6 +57,7 @@ $$(IMAGEODIR)/$(1).elf: $$(OBJS) $$(DEP_OBJS_$(1)) $$(DEP_LIBS_$(1)) $$(DEPENDS_
 	@mkdir -p $$(IMAGEODIR)
 	$(LINK) -Wl,--gc-sections -Wl,-zmax-page-size=1024 -Wl,--whole-archive $$(OBJS) $$(DEP_OBJS_$(1)) $$(DEP_LIBS_$(1)) $$(if $$(LINKFLAGS_$(1)),$$(LINKFLAGS_$(1))) -Wl,--no-whole-archive $(LINKFLAGS) $(MAP) -o $$@
 	$(SIZE) -A -t $(IMAGEODIR)/$(TARGET).elf
+	$(SIZE) -B $(IMAGEODIR)/$(TARGET).elf
 endef
 
 $(BINODIR)/%.bin: $(IMAGEODIR)/%.elf