diff --git a/applications/core.c b/applications/core.c
index 5c4cb2c..5571a8b 100644
--- a/applications/core.c
+++ b/applications/core.c
@@ -728,6 +728,7 @@ void initTT()
         LOG_W("TT is already running.");
         return;
     }
+    set3SRTC();
     initThread = rt_thread_create("initTT", initTT_thread_entry, RT_NULL, 1024 * 5, 25, 10);
     /* 创建成功则启动线程 */
     if (initThread != RT_NULL)
diff --git a/applications/func/func.c b/applications/func/func.c
index 864ee42..09c47d9 100644
--- a/applications/func/func.c
+++ b/applications/func/func.c
@@ -1696,12 +1696,11 @@ void reportINFO(void)
 void set3SRTC(void)
 {
     uint8_t cmd[16]={0x5A, 0xA5, ADDR_3S, ADDR_ANJI, _CMD_SET_RTC >> 8, _CMD_SET_RTC & 0xFF, 0x00, 0x06 };
-    uint8_t tm[10];
-    time2Byte(tm);
-    memcpy(cmd+8,tm,6);
-    cmd[14]=bccCRC(cmd+2, 14);
+
+    time2Byte(cmd+8);
+    cmd[14]=bccCRC(cmd+2, 16-4);
     cmd[15]=0xED;
-    LOG_HEX("sRTC",16,cmd,sizeof(cmd));
+    LOG_HEX("cmdRTC",16,cmd,sizeof(cmd));
     formatAndSendTo3S(cmd, sizeof(cmd));
 }
 
@@ -1774,6 +1773,7 @@ MSH_CMD_EXPORT(isEthUP,isEthUP);
 MSH_CMD_EXPORT(reportSysCfg,reportSysCfg);
 MSH_CMD_EXPORT(d_isInFence,d_isInFence);
 MSH_CMD_EXPORT(d_sw,msw);
+MSH_CMD_EXPORT(set3SRTC,发送指令设置RTC);
 #endif