diff --git a/Src/main.c b/Src/main.c
index 69f1e70..30e4888 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -102,6 +102,7 @@ static void MX_USART1_UART_Init(void);
 static void MX_RTC_Init(void);
 /* USER CODE BEGIN PFP */
 void Paint_DrawTimeArray(void);
+bool System_SecondHeartbeat(void);
 /* USER CODE END PFP */
 
 /* Private user code ---------------------------------------------------------*/
@@ -208,6 +209,13 @@ void Paint_DrawTimeArray(){
 	}
 
 }
+bool System_SecondHeartbeat(){
+	if(sTime.Seconds%2 == 0){
+		return true;
+	}else{
+		return false;
+	}
+}
 /**
   * @brief System Clock Configuration
   * @retval None