diff --git a/.cproject b/.cproject
index 44ac3bd..74b66f6 100644
--- a/.cproject
+++ b/.cproject
@@ -39,10 +39,10 @@
 								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.883307296" name="Debug level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.debuglevel.value.g3" valueType="enumerated"/>
 								<option id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.1182522958" name="Optimization level" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level" useByScannerDiscovery="false" value="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.optimization.level.value.og" valueType="enumerated"/>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols.1676188920" name="Define symbols (-D)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols" useByScannerDiscovery="false" valueType="definedSymbols">
+									<listOptionValue builtIn="false" value="DEPLOY_MODE=&quot;DEBUG&quot;"/>
 									<listOptionValue builtIn="false" value="USE_HAL_DRIVER"/>
 									<listOptionValue builtIn="false" value="STM32F107xC"/>
 									<listOptionValue builtIn="false" value="DEBUG"/>
-									<listOptionValue builtIn="false" value="DEPLOY_MODE=&quot;DEBUG&quot;"/>
 									<listOptionValue builtIn="false" value="APP_VERSION=&quot;V0.9.1&quot;"/>
 								</option>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths.186388616" name="Include paths (-I)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths" useByScannerDiscovery="false" valueType="includePath">
@@ -98,8 +98,8 @@
 					<sourceEntries>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="CMSIS"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Core"/>
-						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Drivers"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Middlewares"/>
+						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="Drivers"/>
 						<entry flags="VALUE_WORKSPACE_PATH|RESOLVED" kind="sourcePath" name="USB_DEVICE"/>
 					</sourceEntries>
 				</configuration>
@@ -143,8 +143,8 @@
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols.1412817126" name="Define symbols (-D)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.definedsymbols" useByScannerDiscovery="false" valueType="definedSymbols">
 									<listOptionValue builtIn="false" value="USE_HAL_DRIVER"/>
 									<listOptionValue builtIn="false" value="STM32F107xC"/>
-									<listOptionValue builtIn="false" value="DEPLOY_MODE=&quot;RELEASE&quot;"/>
 									<listOptionValue builtIn="false" value="APP_VERSION=&quot;V0.9.1&quot;"/>
+									<listOptionValue builtIn="false" value="DEPLOY_MODE=&quot;RELEASE&quot;"/>
 								</option>
 								<option IS_BUILTIN_EMPTY="false" IS_VALUE_EMPTY="false" id="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths.968919675" name="Include paths (-I)" superClass="com.st.stm32cube.ide.mcu.gnu.managedbuild.tool.c.compiler.option.includepaths" useByScannerDiscovery="false" valueType="includePath">
 									<listOptionValue builtIn="false" value="../Middlewares/Third_Party/FreeRTOS/Source/include"/>
diff --git a/Core/Src/freertos.c b/Core/Src/freertos.c
index fbc9eab..f18a191 100644
--- a/Core/Src/freertos.c
+++ b/Core/Src/freertos.c
@@ -2,7 +2,7 @@
  * @Description: 
  * @Date: 2020-04-02 21:44:31
  * @LastEditors: CK.Zh
- * @LastEditTime: 2020-12-17 17:27:06
+ * @LastEditTime: 2020-12-17 18:39:26
  * @FilePath: \NaviKit_stm32\Core\Src\freertos.c
  */
 /* USER CODE BEGIN Header */
@@ -112,11 +112,6 @@ const osThreadAttr_t PowerMonitTask_attributes = {
   .priority = (osPriority_t) osPriorityLow,
   .stack_size = 128 * 4
 };
-/* Definitions for myMutex01 */
-osMutexId_t myMutex01Handle;
-const osMutexAttr_t myMutex01_attributes = {
-  .name = "myMutex01"
-};
 
 /* Private function prototypes -----------------------------------------------*/
 /* USER CODE BEGIN FunctionPrototypes */
@@ -197,9 +192,6 @@ void MX_FREERTOS_Init(void) {
   /* USER CODE BEGIN Init */
        
   /* USER CODE END Init */
-  /* Create the mutex(es) */
-  /* creation of myMutex01 */
-  myMutex01Handle = osMutexNew(&myMutex01_attributes);
 
   /* USER CODE BEGIN RTOS_MUTEX */
   /* add mutexes, ... */
@@ -278,7 +270,7 @@ void StartDefaultTask(void *argument)
 	Log(info,"Device ID: %u ", HAL_GetDEVID());
 	Log(info,"Chip UID: %u%u%u ", HAL_GetUIDw0(),HAL_GetUIDw1(),HAL_GetUIDw2);
 
-	if(osKernelGetInfo(&osVersion,id_buf,id_size)){
+	if(osOK == osKernelGetInfo(&osVersion,id_buf,id_size)){
 		Log(info,"OS Kernel Version: %u ", osVersion.kernel );
 		Log(info,"OS Kernel ID: %s ",id_buf );
 	}
@@ -542,7 +534,7 @@ void StartStateSwitchTask(void *argument)
 			  case shutdown:
 			  {//only from running state
 			  if((NaviKit.sys.sta == running))// && (NaviKit.som.shutdown_req == true)
-				enter_shutdown_state();
+				  enter_shutdown_state();
           }break;
 			  case running:
 			  {//from sleep and shutdown state
@@ -586,25 +578,20 @@ void StartPowerMonitTask(void *argument)
   {
     if(NaviKit.pmb.rails.out_24v > 26.4 || NaviKit.pmb.rails.out_24v < 21.6){
     	 Log(error,"24V power rail exception:%f",NaviKit.pmb.rails.out_24v);
-//    	printf("24V power rail exception:%f",NaviKit.pmb.rails.out_24v);
     }
     if(NaviKit.pmb.rails.out_5v > 5.5 || NaviKit.pmb.rails.out_5v < 4.5){
     	 Log(error,"5V power rail exception:%f",NaviKit.pmb.rails.out_5v);
-//    	printf("5V power rail exception:%f",NaviKit.pmb.rails.out_5v);
     }
     if(NaviKit.pmb.rails.out_12v > 13.2 || NaviKit.pmb.rails.out_12v < 10.8){
     	 Log(error ,"12V power rail exception:%f",NaviKit.pmb.rails.out_12v);
-//    	printf("12V power rail exception:%f",NaviKit.pmb.rails.out_12v);
     }
     if(NaviKit.pmb.rails.bkp_bat < 10){
     	 Log(warning,"Backup power is not online");
-//    	printf("Backup power is not online");
     }
     if(NaviKit.pmb.rails.main_pwr < 19){
     	Beep(100);
     	 Log(warning,"Main power has been lost, please shutdown computer as soon as possible");
-//    	printf("Main power has been lost, please shutdown computer as soon as possible");
-    }
+ }
     osDelay(5000);
 
   }
diff --git a/Core/Src/usart.c b/Core/Src/usart.c
index 752328d..cb86f56 100644
--- a/Core/Src/usart.c
+++ b/Core/Src/usart.c
@@ -1,10 +1,3 @@
-/*
- * @Description: 
- * @Date: 2020-04-04 11:28:36
- * @LastEditors: CK.Zh
- * @LastEditTime: 2020-12-17 17:28:53
- * @FilePath: \NaviKit_stm32\Core\Src\usart.c
- */
 /**
   ******************************************************************************
   * @file    usart.c
diff --git a/NaviKit_stm32.ioc b/NaviKit_stm32.ioc
index 1cdab66..be00c5a 100644
--- a/NaviKit_stm32.ioc
+++ b/NaviKit_stm32.ioc
@@ -69,8 +69,7 @@ FREERTOS.FootprintOK=true
 FREERTOS.HEAP_NUMBER=4
 FREERTOS.INCLUDE_xTaskGetCurrentTaskHandle=1
 FREERTOS.INCLUDE_xTaskGetHandle=1
-FREERTOS.IPParameters=Tasks01,configMAX_TASK_NAME_LEN,configUSE_TICKLESS_IDLE,INCLUDE_xTaskGetCurrentTaskHandle,INCLUDE_xTaskGetHandle,configUSE_APPLICATION_TASK_TAG,FootprintOK,configUSE_IDLE_HOOK,configUSE_TICK_HOOK,configUSE_MALLOC_FAILED_HOOK,configGENERATE_RUN_TIME_STATS,configUSE_STATS_FORMATTING_FUNCTIONS,configUSE_TRACE_FACILITY,HEAP_NUMBER,configTOTAL_HEAP_SIZE,configCHECK_FOR_STACK_OVERFLOW,configUSE_TASK_NOTIFICATIONS,Mutexes01
-FREERTOS.Mutexes01=myMutex01,Dynamic,NULL
+FREERTOS.IPParameters=Tasks01,configMAX_TASK_NAME_LEN,configUSE_TICKLESS_IDLE,INCLUDE_xTaskGetCurrentTaskHandle,INCLUDE_xTaskGetHandle,configUSE_APPLICATION_TASK_TAG,FootprintOK,configUSE_IDLE_HOOK,configUSE_TICK_HOOK,configUSE_MALLOC_FAILED_HOOK,configGENERATE_RUN_TIME_STATS,configUSE_STATS_FORMATTING_FUNCTIONS,configUSE_TRACE_FACILITY,HEAP_NUMBER,configTOTAL_HEAP_SIZE,configCHECK_FOR_STACK_OVERFLOW,configUSE_TASK_NOTIFICATIONS
 FREERTOS.Tasks01=defaultTask,24,128,StartDefaultTask,Default,NULL,Dynamic,NULL,NULL;LedBlinkTask,8,128,StartLedBlinkTask,Default,NULL,Dynamic,NULL,NULL;IWDGRefreshTask,40,128,StartIWDGRefreshTask,Default,NULL,Dynamic,NULL,NULL;EventDetect,8,128,StartEventDetect,Default,NULL,Dynamic,NULL,NULL;CoulombRead,8,128,StartCoulombRead,Default,NULL,Dynamic,NULL,NULL;StateSwitchTask,8,128,StartStateSwitchTask,Default,NULL,Dynamic,NULL,NULL;PowerMonitTask,8,128,StartPowerMonitTask,Default,NULL,Dynamic,NULL,NULL
 FREERTOS.configCHECK_FOR_STACK_OVERFLOW=1
 FREERTOS.configGENERATE_RUN_TIME_STATS=1
diff --git a/USB_DEVICE/Target/usbd_conf.h b/USB_DEVICE/Target/usbd_conf.h
index 4b29c22..e6fc6f8 100644
--- a/USB_DEVICE/Target/usbd_conf.h
+++ b/USB_DEVICE/Target/usbd_conf.h
@@ -1,10 +1,3 @@
-/*
- * @Description: 
- * @Date: 2020-02-20 11:58:24
- * @LastEditors: CK.Zh
- * @LastEditTime: 2020-12-17 17:39:37
- * @FilePath: \NaviKit_stm32\USB_DEVICE\Target\usbd_conf.h
- */
 /* USER CODE BEGIN Header */
 /**
   ******************************************************************************