diff --git a/applications/alarmer.c b/applications/alarmer.c
index 7308797..a9bde00 100644
--- a/applications/alarmer.c
+++ b/applications/alarmer.c
@@ -100,6 +100,8 @@ void poTT2_callback(rt_alarm_t alarm, time_t timestamp)
 //    timerIsReady();
 //    initTT();
 }
+
+static uint8_t rstCnt=0;
 /**
  * 定时更新debug文件名
  * @param alarm
@@ -107,7 +109,18 @@ void poTT2_callback(rt_alarm_t alarm, time_t timestamp)
  */
 void updatelog_callback(rt_alarm_t alarm, time_t timestamp)
 {
-    updateDebuglogName();
+    //idle且TT未开启状态下主动重启
+    if (++rstCnt >= 2)//每N小时一检
+    {
+        rstCnt = 0;
+        if (isIdle())
+        {
+            rt_hw_cpu_reset(); //reboot
+        }
+    }
+    else {
+        updateDebuglogName();
+    }
 }
 
 void addDefaultAlarm()
diff --git a/applications/core.c b/applications/core.c
index 593e67b..b6bfca5 100644
--- a/applications/core.c
+++ b/applications/core.c
@@ -41,6 +41,17 @@ static rt_thread_t deinitThread=RT_NULL;
 static rt_timer_t tmrToPNTT=RT_NULL;
 static uint8_t isWindowMode=0;//RTC引起TT开机
 static uint8_t isFileMode=0;//file is ok
+
+//是否为idle状态。idle状态下TT未开启，232无数据
+uint8_t isIdle(void)
+{
+    if (!isTCPok() && !isEthUP() &&!isFileMode && !isWindowMode && !isManualWindow() && !is232Busy()) {
+        return 1;
+    }
+    else {
+        return 0;
+    }
+}
 uint8_t isInFileMode(void)
 {
     return isFileMode;
diff --git a/applications/uart_3S.c b/applications/uart_3S.c
index abd2c98..89d2418 100644
--- a/applications/uart_3S.c
+++ b/applications/uart_3S.c
@@ -78,21 +78,26 @@ static rt_err_t uart_input(rt_device_t dev, rt_size_t size)
 struct rx_msg msg;
 //extern struct rt_event update_cfg;
 //extern int time2Str(char *str);
-
+static uint8_t is232parsing=0;
+uint8_t is232Busy(void)
+{
+    return rx_mq.entry | is232parsing;
+}
 static void serial_thread_entry(void *parameter)
 {
 //    struct rx_msg msg;
     rt_err_t result;
     size_t rx_length=0;//单次收到的数据长度
     static char rx_buffer[RT_SERIAL_RB_BUFSZ + 1];
+    memset(rx_buffer,0,RT_SERIAL_RB_BUFSZ + 1);//清空rx_buffer
 
     while (1)
     {
         rt_memset(&msg, 0, sizeof(msg));
         /* 从消息队列中读取消息*/
-
+        is232parsing=0;
         result = rt_mq_recv(&rx_mq, &msg, sizeof(msg), RT_WAITING_FOREVER);
-
+        is232parsing=1;
         if (result == RT_EOK)
         {
             /* 从串口读取数据*/