diff --git a/LoRaWAN/App/lora_app.c b/LoRaWAN/App/lora_app.c
index f979705..6dc71cd 100644
--- a/LoRaWAN/App/lora_app.c
+++ b/LoRaWAN/App/lora_app.c
@@ -60,7 +60,7 @@ extern volatile int sts_tof_distance_data[MAX_TOF_COUNT];
 volatile uint32_t SamplingPeriodicity = 1000; 		//unit ms
 volatile uint32_t HeartBeatPeriodicity = 120000; 		//unit ms
 volatile uint8_t STS_LoRa_WAN_Joined = 0;
-
+volatile uint8_t bring_up_mark=0, bring_up_count=0;
 #ifdef STS_TMG
 volatile float env_temperature= 25.0;
 extern volatile uint8_t waterTempThreshold;
@@ -811,7 +811,7 @@ static void SendTxData(void)
 #if	defined(YUNHORN_STS_M1A_ENABLED)
 
 	  //UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_YunhornSTSEventP9), CFG_SEQ_Prio_0);
-
+	  STS_YunhornSTSEventP9_Process();
 	  STS_M1A_SENSOR_Read(&m1a_data);
 
 	  m1a_data.battery_Pct = (uint8_t)(99*batteryLevel/254);
@@ -962,11 +962,32 @@ static void OnTxTimerEvent(void *context)
 
   /* USER CODE END OnTxTimerEvent_1 */
   upload_message_timer =1U;
-  UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_YunhornSTSEventP9), CFG_SEQ_Prio_0);
-  UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
+    //UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_YunhornSTSEventP9), CFG_SEQ_Prio_0);
+	  UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
+
+	  /*Wait for next tx slot*/
+	  UTIL_TIMER_Start(&TxTimer);
+	  if (bring_up_mark == 1)
+      {
+		  if (bring_up_count ++ >3)
+		  {
+			  uint32_t periodicity = (sts_cfg_nvm.periodicity);		//TxPeriodicty interval
+			  if ((char)sts_cfg_nvm.unit =='M') {
+				  periodicity *= 60;
+			  } else if ((char) sts_cfg_nvm.unit =='H') {
+				  periodicity *= 3600;
+			  } else if ((char) sts_cfg_nvm.unit =='S') {
+				  periodicity *= 1;
+			  }
+
+			  TxPeriodicity= periodicity*1000;  // to ms
+			  OnTxPeriodicityChanged(TxPeriodicity);
+			  bring_up_mark = 0;
+			  bring_up_count =0;
+		  }
+
+	  }
 
-  /*Wait for next tx slot*/
-  UTIL_TIMER_Start(&TxTimer);
   /* USER CODE BEGIN OnTxTimerEvent_2 */
 
   /* USER CODE END OnTxTimerEvent_2 */
@@ -1051,10 +1072,24 @@ static void OnJoinRequest(LmHandlerJoinParams_t *joinParams)
       STS_LoRa_WAN_Joined = (uint8_t) joinParams->Mode;
       APP_LOG(TS_OFF, VLEVEL_L,"\r\n STS_LoRa_WAN_Joined = %s \r\n", (STS_LoRa_WAN_Joined == 1)?"ABP":"OTAA");
 
+      //STS_SENSOR_Upload_Message(LORAWAN_USER_APP_PORT, 30, (char*)"YunHorn SmarToilets 2024");
+      bring_up_mark = 1;
+      // for warm up upload quickly
+
 
-      UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
 
     //restore NVM TxPeriodicity interval
+      //TxPeriodicity= periodicity*1000;  // to ms
+
+      //OnTxPeriodicityChanged(TxPeriodicity);
+      /*
+      UTIL_TIMER_Stop(&TxTimer);
+        UTIL_TIMER_SetPeriod(&TxTimer, TxPeriodicity);
+        UTIL_TIMER_Start(&TxTimer);
+       */
+/*
+      STS_SENSOR_Upload_Message(LORAWAN_USER_APP_PORT, 30, (char*)"YunHorn SmarToilets 2024");
+
       uint32_t periodicity = (sts_cfg_nvm.periodicity);		//TxPeriodicty interval
       if ((char)sts_cfg_nvm.unit =='M') {
     	  periodicity *= 60;
@@ -1064,11 +1099,15 @@ static void OnJoinRequest(LmHandlerJoinParams_t *joinParams)
     	  periodicity *= 1;
       }
 
-      TxPeriodicity= periodicity*1000;  // to ms
+//      TxPeriodicity= periodicity*1000;  // to ms
 
-      OnTxPeriodicityChanged(TxPeriodicity);
+//      OnTxPeriodicityChanged(TxPeriodicity);
 
-      OnYunhornSTSHeartBeatPeriodicityChanged(HeartBeatPeriodicity);
+
+//      UTIL_TIMER_SetPeriod(&TxTimer, TxPeriodicity);
+//      UTIL_TIMER_Start(&TxTimer);
+*/
+//      OnYunhornSTSHeartBeatPeriodicityChanged(HeartBeatPeriodicity);
     }
     else
     {
@@ -1079,6 +1118,8 @@ static void OnJoinRequest(LmHandlerJoinParams_t *joinParams)
 
   }
 
+
+
   /* USER CODE END OnJoinRequest_1 */
 }
 
@@ -1147,7 +1188,7 @@ static void OnMacProcessNotify(void)
 static void OnTxPeriodicityChanged(uint32_t periodicity)
 {
   /* USER CODE BEGIN OnTxPeriodicityChanged_1 */
-
+	UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
   /* USER CODE END OnTxPeriodicityChanged_1 */
   TxPeriodicity = periodicity;
 
@@ -1352,7 +1393,7 @@ static void OnYunhornSTSOORSSWakeUpTimerEvent(void *context)
 static void OnYunhornSTSHeartBeatPeriodicityChanged(uint32_t periodicity)
 {
   /* USER CODE BEGIN OnTxPeriodicityChanged_1 */
-
+	UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
   /* USER CODE END OnTxPeriodicityChanged_1 */
 	HeartBeatPeriodicity = periodicity;
 
@@ -2054,14 +2095,14 @@ void STS_SENSOR_Upload_Message(uint8_t appDataPort, uint8_t appBufferSize, char
 		}
 
 	}
-
+/*
 	if (EventType == TX_ON_TIMER)
 	{
 	    UTIL_TIMER_Stop(&TxTimer);
 	    UTIL_TIMER_SetPeriod(&TxTimer, MAX(nextTxIn, TxPeriodicity));
 	    UTIL_TIMER_Start(&TxTimer);
 	}
-
+*/
 }
 
 
diff --git a/LoRaWAN/App/lora_app.h b/LoRaWAN/App/lora_app.h
index fa9153a..a83ec96 100644
--- a/LoRaWAN/App/lora_app.h
+++ b/LoRaWAN/App/lora_app.h
@@ -71,7 +71,7 @@ extern "C" {
 /*!
  * LoRaWAN default class
  */
-#define LORAWAN_DEFAULT_CLASS                       CLASS_C
+#define LORAWAN_DEFAULT_CLASS                       CLASS_A
 
 /*!
  * LoRaWAN default confirm state