diff --git a/applications/_main.c b/applications/_main.c
index 5a29a85..4f6abb1 100644
--- a/applications/_main.c
+++ b/applications/_main.c
@@ -202,31 +202,57 @@ void chkAndSendFile()
 
 //tcp连接保活
 //实际场景不存在中间断掉的可能
-void iniCnt()
+void initTT_thread_entry()
 {
-    rt_hw_stm32_eth_init();        //激活网口
-    rt_thread_mdelay(5000);
-
-    while (1 && !isTCPok())        //判断TCP连接是否正常，异常自动重连
+    while (1)
     {
-//        while (!isTCPok())
-        {
-            LOG_W("TT server is not ready.");
-            tcpInit();
-            LOG_D("s=%d",isTCPok());
-//            rt_thread_mdelay(5000);
+        if (!isTTon()) {
+            break;
         }
+        if (!isEthUP())
+        { //只初始化一次
+            LOG_D("init eth...");
+            if (rt_hw_stm32_eth_init() == RT_EOK)
+            {
+                LOG_D("eth inited DONE.");
+            };        //激活网口
+        }
+        else if (!isTCPok())        //判断TCP连接是否正常，异常自动重连
         {
-            LOG_D("TT server is ready.");
-            tcpRecMQ();
-            recTT();
-            rt_thread_mdelay(1000);
+//            LOG_W("TT server is not ready,--%d",isTCPok());
+            tcpInit();
+//            rt_thread_mdelay(1000);
+            if (isTCPok())
+            {
+                LOG_D("TT server is ready.");
+                tcpRecMQ();        //开启tcp接收线程
+                recTT();
+            }
         }
 
+        rt_thread_mdelay(3000);        //chk with 3 second interval
+//        LOG_D("rechk-%d",isTCPok());
     }
 }
-void deiniCnt()
+void initTT()
 {
+    /* 创建 serial 线程 */
+        rt_thread_t thread = rt_thread_create("initTT", initTT_thread_entry, RT_NULL, 1024 * 1.5, 24, 10);
+        /* 创建成功则启动线程 */
+        if (thread != RT_NULL)
+        {
+            rt_thread_startup(thread);
+        }
+        else
+        {
+            LOG_E("thread 'initTT' create failure.");
+            return;
+        }
+}
+
+void deInitTT()
+{
+    tcpClose();
     rt_hw_stm32_eth_deinit();        //qu激活网口
 }
 
@@ -234,6 +260,6 @@ void deiniCnt()
 #ifdef FUNC_DEMO //测试时导出命令到控制台
 MSH_CMD_EXPORT(chkAndSendFile, chkAndSendFile);
 MSH_CMD_EXPORT(upSendFile, upSendFile);
-MSH_CMD_EXPORT(iniCnt,初始化tcp连接);
-MSH_CMD_EXPORT(deiniCnt,初始化tcp连接);
+MSH_CMD_EXPORT(initTT,初始化tcp连接);
+MSH_CMD_EXPORT(deInitTT,初始化tcp连接);
 #endif
diff --git a/applications/func/func.c b/applications/func/func.c
index 97cbc14..dedfb3d 100644
--- a/applications/func/func.c
+++ b/applications/func/func.c
@@ -786,7 +786,10 @@ void parseTTData(uint8_t *din, size_t len)
         //按帧头分割
         int cnt=(i+1<n)?index[i+1]-index[i]:len-index[i];
         memcpy(ndin,din+index[i],cnt);
-        LOG_HEX("frame",16,ndin,cnt);
+        if (n>1) {
+            LOG_HEX("frame",16,ndin,cnt);
+        }
+
 
         //判断是否为ACK
         if ((ndin[10]<<8) | ndin[11] == 0x03) {//数据长度只有3
@@ -994,11 +997,34 @@ void parseRS232(uint8_t *din, size_t len)
 }
 
 
+//#include <rtthread.h>
+//#include <rthw.h>
 
+#include <netdev_ipaddr.h>
+#include <netdev.h>
+/**
+ * check eth
+ * @return 1-UP,0-DOWN
+ */
+int isEthUP()
+{
+    //static void netdev_list_if(void) in netdev.c
 
+//    struct netdev *netdev = RT_NULL;
+//    netdev =  netdev_get_by_name(argv[1]);
+//    if (netdev == RT_NULL)
+//        {
+//        LOG_D("none");
+//        }
+//    else {
+//       LOG_D("--%d",netdev->flags);
+//    }
+    extern struct netdev *netdev_default;
+    int rst =  (netdev_default->flags & 0x01U) ? 1:0;
+//    LOG_D("eth is %s.",rst?"up":"down");
 
-
-
+    return rst;
+}
 
 
 
@@ -1013,6 +1039,7 @@ MSH_CMD_EXPORT(d_packLocMsg,dpackLocMsg);
 MSH_CMD_EXPORT(packAndSendLoc,packAndSendLoc);
 MSH_CMD_EXPORT(d_cacheData,d_cacheData);
 MSH_CMD_EXPORT(d_getFileSize,d_getFileSize);
+MSH_CMD_EXPORT(isEthUP,isEthUP);
 #endif
 
 
diff --git a/applications/main.c b/applications/main.c
index a378f44..01bb0a7 100644
--- a/applications/main.c
+++ b/applications/main.c
@@ -18,6 +18,11 @@
 //#include <cfg.h>
 
 
+///* 中断回调函数 */
+//void pwTT_irq_callback(void *args)
+//{
+//    LOG_D("key irq callback");
+//}
 
 
 
@@ -34,14 +39,22 @@ int main(void)
     rt_pin_mode(ETH_RESET_PIN, PIN_MODE_OUTPUT);
 
     rt_pin_mode(TT_EN, PIN_MODE_OUTPUT);
+    rt_pin_write(TT_EN, PIN_HIGH);
+//    rt_pin_attach_irq(TT_EN, PIN_IRQ_MODE_FALLING, pwTT_irq_callback, RT_NULL);   // 下降沿触发
+//    rt_pin_irq_enable(TT_EN, PIN_IRQ_ENABLE);                                    // 使能中断
 
     rt_pin_mode(TR485_RE, PIN_MODE_OUTPUT);
     rt_pin_write(TR485_RE, PIN_LOW);
 //    rt_pin_write(ETH_RESET_PIN, PIN_LOW);//关闭ETH
 //    rt_pin_write(TT_EN, PIN_HIGH);//关闭TT
+
+
+    //sysSemInit
+    sysSemInit();
     if (isInWindowZone()) {//开机检查是否在开窗区间内，是则给TT开机
 
         pwTT_thread_entry("1");
+//        initTT();
     }
 
 
@@ -60,16 +73,6 @@ int main(void)
         rt_pin_write(LED_HEART_DEBUG, PIN_LOW);
         rt_thread_mdelay(1000);
 
-
-//        rt_device_control(wdg_dev, RT_DEVICE_CTRL_WDT_KEEPALIVE, NULL);
-        /* 从消息队列中读取消息*/
-//        rt_err_t result = rt_mq_recv(&update_cfg, &msg, sizeof(msg), RT_WAITING_NO);
-//        if (result == RT_EOK)
-//        {
-//            LOG_I("updatecfg:%10s -->%s", msg.key, msg.value);
-//        }
-//        rt_thread_mdelay(1000);
-
     }
 
     return RT_EOK;
@@ -77,6 +80,21 @@ int main(void)
 //fastlz_test -c demo.bin f.bin
 
 
+//
+//RT_WEAK void initTT()
+//{
+//
+//}
+//
+//RT_WEAK void deInitTT()
+//{
+//
+//}
+
+
+
+
+
 INIT_APP_EXPORT(main);
 extern int rt_hw_stm32_eth_init(void);
 MSH_CMD_EXPORT(rt_hw_stm32_eth_init, 初始化网络。);
@@ -87,7 +105,7 @@ void show_version(void)
     uint8_t t[10];
     size_t len=time2Byte(t);
     bytes2str(t, len, 10, "", str);
-    rt_kprintf("SW Version: %s, build-%s\n","1.45",bytes2str(t, len, 10, "", str));
+    rt_kprintf("SW Version: %s, build-%s\n","1.46",bytes2str(t, len, 10, "", str));
 }
 
 MSH_CMD_EXPORT(show_version,显示版本号);
diff --git a/applications/tools.c b/applications/tools.c
index f554517..7d96eb5 100644
--- a/applications/tools.c
+++ b/applications/tools.c
@@ -417,14 +417,6 @@ void sDemo()
 
 MSH_CMD_EXPORT(sDemo,喂文件数据);
 
-/**
- * 关闭网口，去初始化，释放内存
- */
-RT_WEAK void rt_hw_stm32_eth_deinit()
-{
-
-}
-MSH_CMD_EXPORT(rt_hw_stm32_eth_deinit, 去初始化网络。);
 
 
 
@@ -432,16 +424,13 @@ void TTisReady(void)
 {
     rt_sem_release(TTReady);
 }
-void sysInit()
-  {
-
-//      pwTT_thread_entry("1");//开机
-      TTReady = rt_sem_create("TTisReady", 0, RT_IPC_FLAG_PRIO);
-      cfgUpdate = rt_sem_create("cfgUpdate", 0, RT_IPC_FLAG_PRIO);
-      rt_sem_release(cfgUpdate);//上电更新值
-//      rt_hw_stm32_eth_init();//激活网口
-      LOG_D("sysInit");
-  }
-MSH_CMD_EXPORT(sysInit,semInit);
-INIT_APP_EXPORT(sysInit);
+void sysSemInit()
+{
+    TTReady = rt_sem_create("TTisReady", 0, RT_IPC_FLAG_PRIO);
+    cfgUpdate = rt_sem_create("cfgUpdate", 0, RT_IPC_FLAG_PRIO);
+    rt_sem_release(cfgUpdate);        //上电更新值
+    LOG_D("sysSemInit DONE.");
+}
+MSH_CMD_EXPORT(sysSemInit,semInit);
+//INIT_APP_EXPORT(sysInit);
 INIT_APP_EXPORT(updatecfg);
diff --git a/applications/ttTR.c b/applications/ttTR.c
index 6080c9e..532865e 100644
--- a/applications/ttTR.c
+++ b/applications/ttTR.c
@@ -33,11 +33,14 @@ void tcpClose(void)
     /* 关闭这个连接 */
     if (sock) {
         closesocket(sock);
+
     }
+    flag=0;
 
 }
-int isTCPok(void)
+ int isTCPok(void)
 {
+//    return sock;
     return flag;
 }
 
@@ -155,6 +158,9 @@ void tcpRecMQ_thread_entry(void)
 
     while (1)
     {
+        if (!isTCPok()) {
+            break;
+        }
         rt_memset(&msg, 0, sizeof(msg));
         /* 从sock连接中接收最大BUFSZ字节数据 */
         msg.size = recv(sock, msg.data, BUFSZ, 0);
@@ -184,6 +190,7 @@ void tcpRecMQ_thread_entry(void)
             msg.size=0;//收到数据长度为0表示tcp断开
             rt_mq_send(&TTrx_mq, &msg, sizeof(msg));
             LOG_E("tcp error, close.");
+            tcpClose();
             break;
         }
     }
diff --git a/applications/ttmsg/ttmsg.c b/applications/ttmsg/ttmsg.c
index 0406730..5eda9bd 100644
--- a/applications/ttmsg/ttmsg.c
+++ b/applications/ttmsg/ttmsg.c
@@ -469,26 +469,36 @@ MSH_CMD_EXPORT(pmsg, 打包文件。);
 void pwTT_thread_entry(void *parameter)
 {
 //    LOG_I("--%s--",parameter);
+    int f = rt_pin_read(TT_EN);
+    int flag = f;
     if (strcmp(parameter,"NULL")==0)//无参数，状态翻转
     {
 //        LOG_I("null");
-        int f = rt_pin_read(TT_EN);
-        rt_pin_write(TT_EN, !f);
+//        int f = rt_pin_read(TT_EN);
+//        rt_pin_write(TT_EN, !f);
+        flag = !f;
     }
     else
     {
-        rt_bool_t flag = !(rt_bool_t) atoi(parameter);
-        if ((rt_bool_t)rt_pin_read(TT_EN) != flag) {//目标状态与当前状态一致才响应
-            rt_pin_write(TT_EN, flag);//
-        }
-
+        flag = !(rt_bool_t) atoi(parameter);
     }
+//        if ((rt_bool_t)rt_pin_read(TT_EN) != flag)
+        //目标状态与当前状态一致才响应
+//            LOG_D("new sta");
+    rt_pin_write(TT_EN, flag);//
+
+    if (!flag) {
+        initTT();
+    }
+    else {
+        deInitTT();
+    }
+
+
 
     if (rt_pin_read(TT_EN))//检查设置后状态
     {
-//#ifdef NO_RELAY
         LOG_I("set TT %s", "OFF");//高电平关断
-//#endif
         add_val("swCnt");//更新统计值
     }
     else
@@ -537,6 +547,9 @@ void recTT_thread_entry()
     static TTRx_MSG msg;
     while (1)
     {
+        if (!isTCPok()) {
+            break;
+        }
 
         rt_memset(&msg, 0, sizeof(msg));
         if (rt_mq_recv(&TTrx_mq, &msg, sizeof(msg), RT_WAITING_FOREVER) == RT_EOK)
@@ -548,17 +561,9 @@ void recTT_thread_entry()
             }
             LOG_I("%d Bytes received from TT",msg.size);
             LOG_HEX("TTrec", 16, msg.data, msg.size);
-            //此处处理接收到数据
-//            rt_uint8_t rec_good[] = { 0x88, 0xAA, 0xBB, 0x88,  0x41,0x43,0x4B }; //前四字节=帧头、后三字节=ACK
-//            if (rt_memcmp(msg.data, rec_good, 4) == 0 && rt_memcmp(msg.data+msg.size-3, rec_good+4, 3) == 0)
-//            {
-//                LOG_I("ack is good.");
-//            }
-//            else
-            {
-                LOG_D("try to parse data.");
-                parseTTData(msg.data,msg.size);
-            }
+            //此处调用处理函数
+//                LOG_D("try to parse data.");
+            parseTTData(msg.data,msg.size);
         }
     }
 }
diff --git a/drivers/drv_eth.c b/drivers/drv_eth.c
index a239698..95a8f98 100644
--- a/drivers/drv_eth.c
+++ b/drivers/drv_eth.c
@@ -693,7 +693,7 @@ void rt_hw_stm32_eth_deinit()
         rt_free(DMATxDscrTab);
     }
 }
-//MSH_CMD_EXPORT(rt_hw_stm32_eth_deinit, 去初始化网络。);
+MSH_CMD_EXPORT(rt_hw_stm32_eth_deinit, 去初始化网络。);
 
 
 //INIT_DEVICE_EXPORT(rt_hw_stm32_eth_init);