import RPi.GPIO as GPIO
import time

PIR_pin = 3 
LED_pin = 4

GPIO.setmode(GPIO.BOARD)
GPIO.setup(LED_pin ,GPIO.OUT)  # Set up pin to emit LED
GPIO.setwarnings(False)
GPIO.setup(PIR_pin, pull_up_down = GPIO.PUD_UP)  # Set up pin 23 pull up


'''
def PIN_pin_ISR(pressed):
    print("Falling Edge Detected")
'''

def Blink_3_times(pressed):
    i = 0
    while(i<=2):
        GPIO.output(LED_pin, GPIO_HIGH)
        time.sleep(1)
        GPIO.output(LED_pin, GPIO_LOW)
        time.sleep(1)
        print("LED Blink")

GPIO.add_event_detect(PIR_PIN, GPIO.FALLING, callback = Blink_3_times, bouncetime = 300)


try:
    while(1):
        print("Nothing")
        time.sleep(1)

except:
    GPIO.cleanup()