diff --git a/applications/core.c b/applications/core.c
index 1f4615f..a7bff66 100644
--- a/applications/core.c
+++ b/applications/core.c
@@ -428,6 +428,7 @@ static void upSendFile_thread_entry(void *parameter)
     rt_mutex_take(okTosend, RT_WAITING_FOREVER);
     static rt_uint8_t d[BUFFER_ROW][200] = { };//need static?
     static rt_uint8_t s[BUFFER_ROW] = { };
+    memset(s,0,BUFFER_ROW);
     if (!getFileSize(f->fname)) {
         LOG_W("file '%s' is empty.",f->fname);
         clearFileToSend(f->fname);
@@ -444,13 +445,13 @@ static void upSendFile_thread_entry(void *parameter)
     LOG_D("ready to send '%s---%d'",f->fname,f->index);
     uint8_t len = pack_File(f->fname, 0, d, s);
     for (size_t i = 0; i < len; i++) {
-        LOG_HEX("msg",27,d[i],s[i]);
+//        LOG_HEX("msg",27,d[i],s[i]);
     }
 //    list_thread();
     if (len)
     {
         LOG_D("%d pack(s) to send", f->index ? 1 : len);
-        for (rt_uint8_t var = 0; var < len; var++)
+        for (size_t var = 0; (var < len && s[var]!=0); var++)
         {
             if (!f->index || (var+1) == f->index)
             { //index=0 全发，或者仅发index
@@ -483,7 +484,7 @@ void upSendFile(const char *f, int index)
     info.index = index;
 
     /* 创建 serial 线程 */
-    rt_thread_t thread = rt_thread_create("SendFile", upSendFile_thread_entry, (void *) &info, 1024 * 5, 27, 10);
+    rt_thread_t thread = rt_thread_create("SendFile", upSendFile_thread_entry, (void *) &info, 1024 * 10, 27, 10);
     /* 创建成功则启动线程 */
     if (thread != RT_NULL)
     {
@@ -561,7 +562,7 @@ static void chkAndSendFile_thread_entry()
     {
 //        int e;
         LOG_I("ready and waiting",scfg.sendInterval);
-        if (!isTCPok() || rt_event_recv(&chkSta, FILE_IS_OK | TIMER_IS_OUT, RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
+        if (rt_event_recv(&chkSta, FILE_IS_OK | TIMER_IS_OUT, RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
         RT_WAITING_FOREVER, RT_NULL) == RT_EOK) //条件1满足
         {
             LOG_I("等待TT就绪");
@@ -582,8 +583,9 @@ static void chkAndSendFile_thread_entry()
             if (rst == RT_EOK) //条件2满足
             {
                 LOG_I("TT准备就绪");
+                sendACK();
                 //当前固件底层未缓存待发数据，导致前几包数据可能丢失，暂时用延时规避
-                rt_thread_mdelay(1*60*1000);
+//                rt_thread_mdelay(1*60*1000);
                 getAndSendFile();
                 break;
             }
@@ -607,7 +609,7 @@ static void chkAndSendFile_thread_entry()
                 break;
             }
         }
-//        LOG_W("--------one mission DONE--------");
+//        LOG_W("--------one loop DONE--------");
     }
 }
 
@@ -693,6 +695,7 @@ void initTT_thread_entry()
                 recTT();
                 repGetTT();
                 reportLoc();
+                fileIsReady();
 //                resetTM();//启动超时，激活后开启
             }
         }
diff --git a/applications/ttmsg/ttmsg.c b/applications/ttmsg/ttmsg.c
index 4cb634d..ca78d71 100644
--- a/applications/ttmsg/ttmsg.c
+++ b/applications/ttmsg/ttmsg.c
@@ -256,7 +256,7 @@ rt_uint8_t pack_File(const char *fin, rt_uint8_t flag, const rt_uint8_t (*dout)[
     size_t file_size = 0;
     rt_uint8_t len = 0;
     //    rt_uint8_t *buffer = RT_NULL;
-    static size_t flen = 150; // 每包数据初始长度，最大不超过 FRAME_DATA_LEN_MAX
+    size_t flen = 150; // 每包数据初始长度，最大不超过 FRAME_DATA_LEN_MAX
     //        rt_uint8_t len = 0;
 
     fd_in = open(fin, O_RDONLY, 0);
@@ -275,14 +275,14 @@ rt_uint8_t pack_File(const char *fin, rt_uint8_t flag, const rt_uint8_t (*dout)[
     // 粗略调整每包大小
     if (file_size > (size_t) FRAME_DATA_LEN_MAX)
     {
-        while (file_size % flen < flen / 1.2 && flen < FRAME_DATA_LEN_MAX) // 阈值约83%
+        while ((file_size % flen) < (flen / 1.2) && flen < FRAME_DATA_LEN_MAX) // 阈值约83%
         {
             flen += 1;
         }
-        if (file_size % flen < flen / 1.2)
+        if ((file_size % flen) < (flen / 1.2))
         { // 到达限制仍不符合要求
             flen = 150;
-            while (file_size % flen < flen / 2.5 && flen < FRAME_DATA_LEN_MAX) // 调整阈值为40%
+            while ((file_size % flen) < (flen / 2.5) && flen < FRAME_DATA_LEN_MAX) // 调整阈值为40%
             {
                 flen += 1;
             }
@@ -292,12 +292,12 @@ rt_uint8_t pack_File(const char *fin, rt_uint8_t flag, const rt_uint8_t (*dout)[
     {
         flen = file_size;
     }
-
+    LOG_E("p=%d",flen);
     //更新算法，改用特定大小依次读取文件，弃用一次性全部读入文件
 //    static uint8_t row =0;
     uint8_t row = (file_size / flen) + (file_size % flen > 0 ? 1 : 0);
     cfg.fallpiece[0] = row;
-
+    LOG_E("--------row=%d,%d",row,cfg.fallpiece[0]);
     uint8_t block_size = 0;
     rt_uint8_t *buffer = RT_NULL;
     buffer = (rt_uint8_t *) rt_malloc(flen);
@@ -348,6 +348,7 @@ rt_uint8_t pack_File(const char *fin, rt_uint8_t flag, const rt_uint8_t (*dout)[
     }
 
 //    return row;
+    LOG_E("row=%d,%d",row,cfg.fallpiece[0]);
     return cfg.fallpiece[0];
 }
 
@@ -499,3 +500,48 @@ void updateTargetAddr(uint8_t *din, uint8_t *addr)
 {
     memcpy(din+13,addr,4);
 }
+void cmdCCID(uint8_t ccid)
+{
+    uint8_t dout[200];
+    static MSG cfg;
+    rt_memset(&cfg, 0, sizeof(MSG)); // 分配空间
+    char fin[30];
+    time2Str(fin);
+    strcat(fin,".bin");
+    packInit(&cfg, fin, 0); //写入配置
+    cfg.fcurpiece[0] = 1;
+    cfg.fallpiece[0] = 1;
+    uint8_t ack[]={0x37};
+
+    size_t rst = packMsg(&cfg, ack, sizeof(ack), dout);//packMsgs
+//    memcpy()
+    sendMsg(dout, rst);
+}
+/**
+ * 手动发送心跳
+ */
+void sendACK(void)
+{
+    uint8_t dout[200];
+    static MSG cfg;
+    rt_memset(&cfg, 0, sizeof(MSG)); // 分配空间
+    char fin[30];
+    time2Str(fin);
+    strcat(fin,".bin");
+    packInit(&cfg, fin, 0); //写入配置
+    cfg.fcurpiece[0] = 1;
+    cfg.fallpiece[0] = 1;
+    uint8_t ack[]={0x37};
+
+    size_t rst = packMsg(&cfg, ack, sizeof(ack), dout);//packMsgs
+
+    if (rst)
+    {
+        uint8_t addr[]={0x39,0x39,0x39,0x39};
+        updateTargetAddr(dout, addr);
+        if (sendMsg(dout, rst) == RT_EOK)
+        {
+//            LOG_I("send %d bytes to TT Done.",rst);
+        }
+    }
+}