diff --git a/applications/cfg/cfg.c b/applications/cfg/cfg.c
index 5321ec2..0d86cf0 100644
--- a/applications/cfg/cfg.c
+++ b/applications/cfg/cfg.c
@@ -310,7 +310,7 @@ volatile size_t nislock=0;
 static void nsetLock()
 {
     rt_mutex_take(isTosendOk, RT_WAITING_FOREVER);
-    LOG_W("------file locked------");
+//    LOG_W("------file locked------");
     return;
 //    LOG_D("--%d--",nislock);
     size_t cnt=10;
@@ -328,7 +328,7 @@ static void nsetLock()
 static void nclearLock()
 {
     rt_mutex_release(isTosendOk);
-    LOG_W("=====file unlocked=====");
+//    LOG_W("=====file unlocked=====");
     return;
     nislock=0;
     LOG_W("file is unlocked.");
@@ -392,12 +392,27 @@ size_t getFilesToSend(char (*kstr)[MAX_KEY_LEN], int *v)
         v[len] = ini_getl(SECTION_TO_SEND, kstr[len], -1, FILE_TO_SEND);
         len +=1;
         if (len>5) {
-            break;
+//            break;
         }
     }
 //    nclearLock();
     return len;
 }
+
+/**
+ * 获取待发文件个数
+ * @return
+ */
+size_t getCntOfFileToSend(void)
+{
+    size_t len=0;
+    char tmp[100];
+    for (size_t k = 0; ini_getkey(SECTION_TO_SEND, k, tmp, sizeof(tmp), FILE_TO_SEND) > 0; k++) {
+        len = k + 1;
+    }
+//    LOG_D("cnt=%d",len);
+    return len;
+}
 /**
  * 清空待发送文件记录
  */
@@ -415,26 +430,28 @@ int clearFileToSend(const char *k)
 
 static void gf()
 {
+    size_t cnt = getCntOfFileToSend();
+
+//    return;
     int v[MAX_KEY_LEN];
-    char kstr[10][MAX_KEY_LEN];
-    size_t cnt = getFilesToSend(kstr, v);
+    char kstr[cnt][MAX_KEY_LEN];
     if (!cnt) {
         LOG_D("no files waiting to be sent");
     }
     else
     {
+        getFilesToSend(kstr, v);
         for (size_t var = 0; var < cnt; var++)
         {
             LOG_I("%s -- %d", kstr[var], v[var]);
         }
-//        cnt = getFilesToSend(kstr, v);
     }
 }
 
 static void add(int argc, char **argv)
 {
     postFileInfo(argv[1],atoi(argv[2]));
-    gf();
+//    gf();
 //    clearFileToSend(argv[1]);
 //    gf();
 }
diff --git a/applications/core.c b/applications/core.c
index b42b25b..14e2a03 100644
--- a/applications/core.c
+++ b/applications/core.c
@@ -34,7 +34,7 @@ static struct rt_event chkSta; //发送条件，含两部分，1-超时或文件
 rt_sem_t TTReady= RT_NULL;//天通具备发送状态后 rt_sem_release(TTReady);
 rt_sem_t cfgUpdate = RT_NULL;//配置文件更新
 rt_sem_t shuntDownTT = RT_NULL;//关闭TT
-rt_sem_t okTosend = RT_NULL;//可以发送后续文件
+rt_mutex_t okTosend = RT_NULL;//可以发送后续文件。仅一个线程，文件依次发送
 rt_sem_t okToreport = RT_NULL;//配置信息ACK
 static rt_thread_t initThread=RT_NULL;
 static rt_thread_t deinitThread=RT_NULL;
@@ -209,7 +209,7 @@ static void updatecfg(void)
 
 void sysSemInit()
 {
-    okTosend = rt_sem_create("okTosend", 0, RT_IPC_FLAG_FIFO);//同一时间仅一个线程发送文件
+    okTosend = rt_mutex_create("okTosend", RT_IPC_FLAG_FIFO);//同一时间仅一个线程发送文件
     cfgUpdate = rt_sem_create("cfgUpdate", 0, RT_IPC_FLAG_FIFO);//更新cfg
     shuntDownTT = rt_sem_create("shuntDNTT", 0, RT_IPC_FLAG_FIFO);//关闭TT
     okToreport = rt_sem_create("reportINFO", 0, RT_IPC_FLAG_FIFO);//关闭TT
@@ -418,12 +418,19 @@ static void upSendFile_thread_entry(void *parameter)
 
     static rt_uint8_t d[BUFFER_ROW][200] = { };//need static?
     static rt_uint8_t s[BUFFER_ROW] = { };
+    if (!getFileSize(f->fname)) {
+        LOG_W("file '%s' is empty.",f->fname);
+        clearFileToSend(f->fname);
+        rt_mutex_release(okTosend);
+        return;
+    }
     if (getFileSize(f->fname) > scfg.maxSizePerFile+200) {//部分demo数据体积>>1k
         LOG_W("file '%s' is too large to send.",f->fname);
         clearFileToSend(f->fname);
-        rt_sem_release(okTosend);
+        rt_mutex_release(okTosend);
         return;
     }
+
     LOG_D("ready to send '%s---%d'",f->fname,f->index);
     rt_uint8_t len = pack_File(f->fname, 0, d, s);
     for (size_t i = 0; i < len; i++) {
@@ -444,13 +451,13 @@ static void upSendFile_thread_entry(void *parameter)
             }
         }
         LOG_I("upSendFile '%s' done.",f->fname);
-        clearFileToSend(f->fname);
+        clearFileToSend(f->fname);//由于没有准确的校核机制，此处自能认为是发送成功
 
 //        list_thread();
 
     }
     //当前文件处理完后置位
-    rt_sem_release(okTosend);
+    rt_mutex_release(okTosend);
 }
 
 /**
@@ -467,7 +474,7 @@ 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 * 3, 27, 10);
+    rt_thread_t thread = rt_thread_create("SendFile", upSendFile_thread_entry, (void *) &info, 1024 * 5, 27, 10);
     /* 创建成功则启动线程 */
     if (thread != RT_NULL)
     {
@@ -500,15 +507,14 @@ void getAndSendFile()
     if (getFileSize(fnow)) {//有数据才发
         updateCacheFileName();
         LOG_I("send latest data first");
-//        rt_sem_release(okTosend);//初始赋值
+        rt_mutex_take(okTosend, RT_WAITING_FOREVER);
         upSendFile(fnow,0);
-        rt_thread_mdelay(10*1000);
+//        rt_mutex_release(okTosend);//由upSendFile释放
     }
 
 
-    static int index[MAX_KEY_LEN];
-    static char f[5][MAX_KEY_LEN];
-    int cnt = getFilesToSend(f, index);
+
+    uint8_t cnt = (uint8_t)getCntOfFileToSend();
     if(cnt)
     {
         LOG_I("ready to send %d file(s).",cnt);
@@ -519,25 +525,21 @@ void getAndSendFile()
         return;
     }
 
-    rt_sem_release(okTosend);//初始赋值
-    while(cnt)
-    {
-        int i=0;
-        for (i = cnt-1; i > -1; i--)//倒序发送
-        {
-            if (rt_sem_take(okTosend, RT_WAITING_FOREVER) == RT_EOK) {
-                rt_thread_mdelay(1000);//thread close
-                upSendFile(f[i],index[i]);
-            }
-        }
-        rt_thread_mdelay(3000);
-        if (rt_sem_take(okTosend, RT_WAITING_FOREVER) == RT_EOK) {//等待上一轮最后一个文件发送完毕
-            cnt = getFilesToSend(f, index);
-        }
+//    rt_sem_release(okTosend);//初始赋值
+    static int index[MAX_KEY_LEN];
+    char f[cnt][MAX_KEY_LEN];
+    getFilesToSend(f, index);
 
+    for (int i = cnt-1; i > -1; i--)//倒序发送
+    {
+//        LOG_D("f[%d]=%s",i,f[i]);
+//        continue;
+        if (rt_mutex_take(okTosend, RT_WAITING_FOREVER) == RT_EOK) {
+            rt_thread_mdelay(1000);//thread close
+            upSendFile(f[i],index[i]);
+        }
     }
     //发送完毕
-//    rt_sem_take(sem, timeout)
     LOG_D("mission done.");
     resetTM();
 }
@@ -547,7 +549,7 @@ static void chkAndSendFile_thread_entry()
     while (1)
     {
 //        int e;
-        LOG_I("等待发送条件（文件就绪或定时%d分钟超时）",scfg.sendInterval);
+        LOG_I("ready and waiting",scfg.sendInterval);
         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
         {