 
 /* BEGIN:  HearRate Sensor - Header */
   #define LED 4//indicator, Grove - LED is connected with D4 of Arduino
+  unsigned long lastHeartRate = millis(); 
   boolean led_state = LOW;
   unsigned char counter;
   unsigned long temp[21];

/* BEGIN:  Temperature Sensor - loop */
  OutputTemperature();
/* END:  Temperature Sensor - loop */
}

/* BEGIN:  Axis sensor - functions */

	delay(5000);
	arrayInit();
	Serial.println("Heart rate test begin.");
	//attachInterrupt(0, interrupt, RISING);//set interrupt 0,digital port 2
/* END:  HearRate Sensor - Setup */
}

