print("This program integrates PIR sensor with ESP32")
 
# Credits to https://RandomNerdTutorials.com & program edited accordingly
 
#1. Import all necessary modules/library
from machine import Pin # This is to declare Pin 12 & 15
from time import sleep  # utime is for upython
 
#2. Initializes the motion parameter
motion = False  #Initially there is no movement

#3. Create function interrupt handling
#Remarks: This functio will be called every time a motion is detected!
def handle_interrupt(pin): #def is for function
  global motion
  motion = True
  global interrupt_pin  
  interrupt_pin = pin 
 
#4. Declare input and output pin
#Remarks: LED as output and PIR sensor as Input
led_blue = Pin(12, Pin.OUT) #OUT = Output
pir = Pin(15, Pin.IN)  #IN = Input
 
#5. Set interrupt pin on PIR sensor by using irq() method
pir.irq(trigger=Pin.IRQ_RISING, handler=handle_interrupt)
 
#6. Time to test! Now we can compare the output of LED when there is motion or no motion
while True:  #forever loop
  if motion == True:  #A motion has been detected
    print('Motion detected! Interrupt caused by:', interrupt_pin, 'LED Blue = ON' )
    for i in range (5): #repetition(LED blinking)
      led_blue.on()
      sleep(0.5)
      led_blue.off()
      sleep(0.5)
    
    print('Motion stopped! LED Blue = OFF') #No motion
    motion = False