diff --git a/Core/Src/main.c b/Core/Src/main.c
index c930e7f..5d0c6af 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -108,7 +108,7 @@ int main(void)
 
   /* Initialize all configured peripherals */
   MX_GPIO_Init();
-  HAL_UART_DeInit(&huart2);
+  //HAL_UART_DeInit(&huart2);
   MX_DMA_Init();
   MX_I2C2_Init();
 #if 0
diff --git a/LoRaWAN/App/lora_app.c b/LoRaWAN/App/lora_app.c
index 541d917..d324b3b 100644
--- a/LoRaWAN/App/lora_app.c
+++ b/LoRaWAN/App/lora_app.c
@@ -1010,6 +1010,12 @@ static void OnJoinRequest(LmHandlerJoinParams_t *joinParams)
       }
 
       STS_LoRa_WAN_Joined = (uint8_t) joinParams->Mode;
+      AppData.Port = 1;
+      AppData.BufferSize = 10;
+      UTIL_MEM_cpy_8((uint8_t*)AppData.Buffer, "YUNHORN168", 10);
+      LmHandlerParams.IsTxConfirmed = true;
+      LmHandlerErrorStatus_t status = LmHandlerSend(&AppData, LmHandlerParams.IsTxConfirmed, false);
+      if (status ==LORAMAC_HANDLER_SUCCESS )  LmHandlerParams.IsTxConfirmed = false;
 
       OnYunhornSTSHeartBeatPeriodicityChanged(HeartBeatPeriodicity);
       OnTxPeriodicityChanged(TxPeriodicity);
@@ -1023,7 +1029,7 @@ static void OnJoinRequest(LmHandlerJoinParams_t *joinParams)
     APP_LOG(TS_OFF, VLEVEL_M, "###### U/L FRAME:JOIN | DR:%d | PWR:%d\r\n", joinParams->Datarate, joinParams->TxPower);
   }
   //heart_beat_timer = 1;
-  SendTxData();
+  //SendTxData();
   //UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
   //STS_SENSOR_Upload_Message(LORAWAN_USER_HTBT_PORT, 12,"Yunhorn88STS");
   //STS_SENSOR_Upload_Message(LORAWAN_USER_HTBT_PORT, 12,"Yunhorn88STS");