diff --git a/applications/core.c b/applications/core.c
index 8755bb9..1b8a2b5 100644
--- a/applications/core.c
+++ b/applications/core.c
@@ -566,7 +566,7 @@ void getAndSendFile()
     static int index[MAX_KEY_LEN];
     char f[cnt][MAX_KEY_LEN];
     getFilesToSend(f, index);
-    for (int var = 0; var < 2; ++var) {
+    for (int var = 0; var < 1; ++var) {
     for (int i = cnt-1; i > -1; i--)//倒序发送
     {
         LOG_D("f[%d]=%s",i,f[i]);
diff --git a/applications/func/func.c b/applications/func/func.c
index 7603c5d..987c005 100644
--- a/applications/func/func.c
+++ b/applications/func/func.c
@@ -42,7 +42,7 @@ void ack(void)
 int trDataTolog(uint8_t *din, size_t len, uint8_t isTx)
 {
 //    return RT_EOK;
-    char fn[60] = "\n";
+    char fn[60];
     initDataLogPath(fn);
 
     int fd = open(fn, O_WRONLY | O_CREAT | O_APPEND);
@@ -70,10 +70,12 @@ int trDataTolog(uint8_t *din, size_t len, uint8_t isTx)
         strcat(log,isTx?" [T]: ":" [R]: ");
         write(fd, log, strlen(log));
 
-        len = cryp_data(din, len, din);//加密数据
-        bytes2str(din, len, 16, " ", din);
-        len = strlen(din);
-        int rst = write(fd, din, len);
+        uint8_t tmp[1024];
+        len = cryp_data(din, len, tmp);//加密数据
+        bytes2str(tmp, len, 16, "", tmp);
+        len = strlen(tmp);
+
+        int rst = write(fd, tmp, len);
         if (rst != len)
         {
             LOG_E("write to file %s failed!", fn);
@@ -217,7 +219,7 @@ void upSend_thread_entry(void* parameter)
 #else
     size_t rst = packMsg(&cfg, tmpmsg->data, msg->len, dout);//packMsgs
 #endif
-    LOG_HEX("upSend", 27, dout, rst);
+//    LOG_HEX("upSend", 27, dout, rst);
     if (rst)
     {
         if (sendMsg(dout, rst) == RT_EOK)
@@ -1022,7 +1024,7 @@ void clearAllData()
  */
 void reSend(uint8_t *din, uint8_t len)
 {
-//file example:    sd/rxdata/2023_08_23/23_08_23_08_31_44_14.bin
+//file example:    sd/cdata/2023_08_23/23_08_23_08_31_44_14.bin
     LOG_I("FUNC = resend file");
     char f[60]="";
     strcat(f,ROOT_PATH_DATA);
@@ -1034,6 +1036,10 @@ void reSend(uint8_t *din, uint8_t len)
     strcat(f,"/");
     strcat(f,str);
     strcat(f,".bin");
+    if (!getFileSize(f)) {
+        LOG_W("'%f' is empty.");
+        return;
+    }
     LOG_D("resend '%s'",f);
 
 
@@ -1687,12 +1693,7 @@ void parseRS232(uint8_t *din, size_t len)
                 ndin[cnt]='\0';
                 uint8_t tmp[200];
                 size_t ncnt = str2Byte(ndin, 2, 16, tmp)-1;//结尾有\r\n
-                if (n>1)  LOG_HEX("frame",16,tmp,ncnt);
-//                if (chk3SDataValid(tmp, ncnt) != RT_EOK) {
-//#ifdef CHECK_3S_DATA
-//                    return;
-//#endif
-//                }
+//                if (n>1)  LOG_HEX("frame",16,tmp,ncnt);
                 parse3SData(tmp,ncnt);
             }
         }
@@ -1700,14 +1701,7 @@ void parseRS232(uint8_t *din, size_t len)
         {
             //bin
             LOG_I("type = BIN");
-
-            for (size_t var = 0; var < len; var=var+200) {
-                char tmp[len*4];
-                bytes2str(din+var, (len-var)>200?200:(len-var), 16, " ", tmp);
-                trDataTolog(tmp, strlen(tmp), 0);
-            }
-//            trDataTolog(bytes2str(din, len, 16, " ", tmp), strlen(tmp), 0);
-
+            trDataTolog(din, len,  0);
 
             uint16_t index[20];
             size_t n=isInByte(din, len, hexHead, sizeof(hexHead), index);
@@ -1722,12 +1716,7 @@ void parseRS232(uint8_t *din, size_t len)
                 uint8_t ndin[MAX_LEN_3S];
                 int cnt=(i+1<n)?index[i+1]-index[i]:len-index[i];
                 memcpy(ndin,din+index[i],cnt);
-                if (n>1)  LOG_HEX("frame",16,ndin,cnt);
-//                if (chk3SDataValid(ndin, cnt) != RT_EOK) {
-//#ifdef CHECK_3S_DATA
-//                    return;
-//#endif
-//                }
+//                if (n>1)  LOG_HEX("frame",16,ndin,cnt);
                 parse3SData(ndin,cnt);
             }
         }
@@ -1918,6 +1907,7 @@ size_t decryptCdata(const char *fin, uint8_t *dout)
 
 /**
  * 加密待发的缓存文件，覆盖源文件
+ * 当文件内容不再更新时调用此文件
  * @param f 缓存文件
  */
 void cryptCdata(const char *f)
diff --git a/applications/main.c b/applications/main.c
index c5ada8a..6fdfa15 100644
--- a/applications/main.c
+++ b/applications/main.c
@@ -86,7 +86,7 @@ void show_version(void)
     char str[30];
     uint8_t t[10];
     size_t len=time2Byte(t);
-    rt_kprintf("SW Version: %s, build-%s\n","2.7d",bytes2str(t, 3, 10, "", str));
+    rt_kprintf("SW Version: %s, build-%s\n","2.8d",bytes2str(t, 3, 10, "", str));
 }
 
 MSH_CMD_EXPORT(show_version,显示版本号);
diff --git a/applications/tools.c b/applications/tools.c
index b4de68d..3c75b75 100644
--- a/applications/tools.c
+++ b/applications/tools.c
@@ -231,7 +231,7 @@ char *int2str(int num, char *str, int radix)
  */
 char *bytes2str(uint8_t *din, size_t count, int radix, char *sep, char *str)
 {
-    char rst[600+10]="";//=malloc(512);
+    char rst[1024]="";//=malloc(512);
     for (size_t i = 0; i < count; i++)
     {
         char s[10]="";
diff --git a/applications/ttTR/ttTR.c b/applications/ttTR/ttTR.c
index fee6c24..fa1afb6 100644
--- a/applications/ttTR/ttTR.c
+++ b/applications/ttTR/ttTR.c
@@ -290,9 +290,10 @@ int sendMsg(const rt_uint8_t *msg, size_t len)
 #endif
 //        return RT_EOK;
         //已发送数据存入log文件
-    char str[600];
-    bytes2str(msg, len, 16, " ", str);
-    trDataTolog(str, strlen(str), 1);
+//    char str[600];
+//    bytes2str(msg, len, 16, " ", str);
+//    trDataTolog(str, strlen(str), 1);
+    trDataTolog(msg, len, 1);
 
     return RT_EOK;
 
diff --git a/applications/ttmsg/ttmsg.c b/applications/ttmsg/ttmsg.c
index 7796398..ad71640 100644
--- a/applications/ttmsg/ttmsg.c
+++ b/applications/ttmsg/ttmsg.c
@@ -373,6 +373,7 @@ rt_uint8_t pack_data(const char *fin, rt_uint8_t flag, const rt_uint8_t (*dout)[
 
     uint8_t decryptData[2048];
     size_t file_size = decryptCdata(fin, decryptData);
+//    LOG_HEX("de",16,decryptData,file_size);
     if (!file_size) {
         LOG_E("failed to decrypt");
         return 0;
@@ -426,7 +427,7 @@ rt_uint8_t pack_data(const char *fin, rt_uint8_t flag, const rt_uint8_t (*dout)[
         }
 
         rt_memset(buffer, 0x00, flen);
-        rt_memcpy(buffer, decryptData, block_size);
+        rt_memcpy(buffer, decryptData+i, block_size);
         uint8_t index = (i / flen);
         cfg.fcurpiece[0] = index + 1;
 
@@ -434,7 +435,7 @@ rt_uint8_t pack_data(const char *fin, rt_uint8_t flag, const rt_uint8_t (*dout)[
         static uint8_t tmp[200];
         uint8_t len = cryptSingleMsg(buffer, block_size, tmp);
         uint8_t col = packMsg(&cfg, tmp, len, dout[index]);
-
+//        LOG_HEX("de",16,dout[index],col);
         arrLen[index] = col;
     }
 
@@ -552,15 +553,16 @@ void recTT_thread_entry()
             }
             readTCPData(bf, msg.size);
             LOG_I("%d Bytes received from TT",msg.size);
-            LOG_HEX("TTrec", 27, bf, msg.size);
+//            LOG_HEX("TTrec", 27, bf, msg.size);
 
             //复制数据
 
 //            memcpy(bf,msg.data,msg.size);
             dlen=msg.size;
             //存入log
-            char tmp[1024]="";//接收的数据不会很长，200足矣
-            trDataTolog(bytes2str(bf, dlen, 16, " ", tmp), strlen(tmp), 0);
+//            char tmp[1024]="";//接收的数据不会很长，200足矣
+//            trDataTolog(bytes2str(bf, dlen, 16, " ", tmp), strlen(tmp), 0);
+            trDataTolog(bf,dlen, 0);
             //此处调用处理函数
             parseTTData(bf,dlen);
         }
diff --git a/applications/uart_3S.c b/applications/uart_3S.c
index 96c26e4..abd2c98 100644
--- a/applications/uart_3S.c
+++ b/applications/uart_3S.c
@@ -102,7 +102,7 @@ static void serial_thread_entry(void *parameter)
                 continue;
             }
             LOG_I("%d Bytes received from RS232",rx_length);
-            LOG_HEX("232rx:",16,rx_buffer,rx_length);//print what received.
+//            LOG_HEX("232rx:",16,rx_buffer,rx_length);//print what received.
             parseRS232(rx_buffer, rx_length);
         }