diff --git a/Core/Src/main.c b/Core/Src/main.c
index 7909695..c8b4555 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -144,7 +144,7 @@ int main(void)
     /* USER CODE END WHILE */
 
     MX_LoRaWAN_Process();
-    LED_TOGGLE;
+
     /* USER CODE BEGIN 3 */
   }
   /* USER CODE END 3 */
diff --git a/Core/Src/stm32_lpm_if.c b/Core/Src/stm32_lpm_if.c
index 5c89b7b..0261d05 100644
--- a/Core/Src/stm32_lpm_if.c
+++ b/Core/Src/stm32_lpm_if.c
@@ -102,6 +102,17 @@ void PWR_EnterStopMode(void)
 	HAL_GPIO_DeInit(GPIOB,GPIO_PIN_All);
 	HAL_GPIO_DeInit(GPIOC,GPIO_PIN_All);
 #endif
+#if 0
+	HAL_UART_DeInit(&huart2);
+	vcom_DeInit();
+
+	HAL_GPIO_WritePin(GPIOA, GPIO_PIN_All, GPIO_PIN_RESET);
+
+	HAL_GPIO_DeInit(GPIOB,GPIO_PIN_All);	// NO rejoin issue
+	HAL_GPIO_WritePin(GPIOB, GPIO_PIN_All, GPIO_PIN_RESET); //no rejoin issue
+
+	HAL_GPIO_WritePin(GPIOC, GPIO_PIN_All, GPIO_PIN_RESET); //no rejoin issue
+#endif
 #if 0
 	  __HAL_RCC_GPIOA_CLK_ENABLE();
 	  __HAL_RCC_GPIOB_CLK_ENABLE();
diff --git a/LoRaWAN/App/lora_app.c b/LoRaWAN/App/lora_app.c
index 716e18d..facc081 100644
--- a/LoRaWAN/App/lora_app.c
+++ b/LoRaWAN/App/lora_app.c
@@ -809,7 +809,7 @@ static void SendTxData(void)
 #if	defined(YUNHORN_STS_R0_ENABLED)||defined(YUNHORN_STS_R5_ENABLED)
 	  PME_ON;
 	  LED_ON;
-	  //HAL_Delay(1000);
+	  //HAL_Delay(10);
 	  MX_TOF_Init();
 	  MX_TOF_Process();
 	  STS_R0_SENSOR_Read(&r0_data);
@@ -1018,7 +1018,8 @@ 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;
+  //heart_beat_timer = 1;
+  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");
diff --git a/TOF/App/X-WL55_WLE5_53L0X.c b/TOF/App/X-WL55_WLE5_53L0X.c
index 95f447c..6d8e542 100644
--- a/TOF/App/X-WL55_WLE5_53L0X.c
+++ b/TOF/App/X-WL55_WLE5_53L0X.c
@@ -149,7 +149,7 @@ int XWL55_WLE5_53L0X_I2C2Configure() {
     XNUCLEO53L1A1_hi2c.Instance = I2C2;
     //XNUCLEO53L1A1_hi2c.Init.Timing = 0x00300F38; /* set 400KHz fast mode i2c*/
     XNUCLEO53L1A1_hi2c.Init.Timing = I2C2_FAST_400K;  //UPDATE 2024-07-09
-    XNUCLEO53L1A1_hi2c.Init.Timing = 0x2010091A; //0x2010091A = 400K Fast Mode, 0x20303E5D, 100K Standard mode, 0x20000209 Fast Mode Plus, 1Mbps
+    //XNUCLEO53L1A1_hi2c.Init.Timing = 0x2010091A; //0x2010091A = 400K Fast Mode, 0x20303E5D, 100K Standard mode, 0x20000209 Fast Mode Plus, 1Mbps
 
     XNUCLEO53L1A1_hi2c.Init.OwnAddress1 = 0;
     XNUCLEO53L1A1_hi2c.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;