diff --git a/Core/Src/gpio.c b/Core/Src/gpio.c
index 4dd4cfe..9cd7e13 100644
--- a/Core/Src/gpio.c
+++ b/Core/Src/gpio.c
@@ -59,8 +59,8 @@ void MX_GPIO_Init(void)
   __HAL_RCC_GPIOC_CLK_ENABLE();
 
   GPIO_InitStruct.Pin = BUT1_Pin;
-  GPIO_InitStruct.Mode = GPIO_MODE_IT_FALLING;
-  GPIO_InitStruct.Pull = GPIO_PULLUP;
+  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
 #if 0
diff --git a/Core/Src/stm32_lpm_if.c b/Core/Src/stm32_lpm_if.c
index f358f2d..f174631 100644
--- a/Core/Src/stm32_lpm_if.c
+++ b/Core/Src/stm32_lpm_if.c
@@ -94,9 +94,9 @@ void PWR_EnterStopMode(void)
   /* USER CODE BEGIN EnterStopMode_1 */
 
   /* USER CODE END EnterStopMode_1 */
-	//HAL_GPIO_WritePin(GPIOB, GPIO_PIN_All, GPIO_PIN_RESET);
+	HAL_GPIO_WritePin(GPIOB, GPIO_PIN_All, GPIO_PIN_RESET);
 	//HAL_GPIO_WritePin(GPIOC, GPIO_PIN_All, GPIO_PIN_RESET);
-	//HAL_GPIO_WritePin(GPIOA, GPIO_PIN_All, GPIO_PIN_RESET);
+	HAL_GPIO_WritePin(GPIOA, ~GPIO_PIN_0, GPIO_PIN_RESET);
   HAL_SuspendTick();
   /* Clear Status Flag before entering STOP/STANDBY Mode */
   LL_PWR_ClearFlag_C1STOP_C1STB();
diff --git a/LoRaWAN/App/lora_app.c b/LoRaWAN/App/lora_app.c
index 91208f1..fcc4c65 100644
--- a/LoRaWAN/App/lora_app.c
+++ b/LoRaWAN/App/lora_app.c
@@ -342,7 +342,7 @@ static UTIL_TIMER_Object_t JoinLedTimer;
 
 /* Exported functions ---------------------------------------------------------*/
 /* USER CODE BEGIN EF */
-
+volatile uint8_t door_status=0, door_changed_flag=0, door_previous_status=0;
 /* USER CODE END EF */
 
 void LoRaWAN_Init(void)
@@ -666,12 +666,21 @@ static void SendTxData(void)
 static void OnTxTimerEvent(void *context)
 {
   /* USER CODE BEGIN OnTxTimerEvent_1 */
-
+	door_status = HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0);
+	if (door_status != door_previous_status)
+	{
+		door_changed_flag = 1;
+		door_previous_status = door_status;
+	}
   /* USER CODE END OnTxTimerEvent_1 */
-  UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
+	if (door_changed_flag ==1 )
+	{
+		door_changed_flag = 0;
+	    UTIL_SEQ_SetTask((1 << CFG_SEQ_Task_LoRaSendOnTxTimerOrButtonEvent), CFG_SEQ_Prio_0);
 
-  /*Wait for next tx slot*/
-  UTIL_TIMER_Start(&TxTimer);
+	    /*Wait for next tx slot*/
+	    UTIL_TIMER_Start(&TxTimer);
+	}
   /* USER CODE BEGIN OnTxTimerEvent_2 */
 
   /* USER CODE END OnTxTimerEvent_2 */