import machine
from machine import Pin
import time

interruptCounter = 0
totalInterruptsCounter = 0

def callback(pin):
    global interruptCounter
    interruptCounter = interruptCounter + 1

p4 = Pin(35, Pin.IN, Pin.PULL_UP)
p4.irq(trigger = Pin.IRQ_RISING | Pin.IRQ_FALLING, handler = callback)

while True:
    print('start')
    if interruptCounter > 0:
        state = machine.disable_irq()
        interruptCounter = interruptCounter + 1
        machine.enable_irq(state)

        totalInterruptsCounter = totalInterruptsCounter + 1
        print("Interrupt has occurred:" + str(totalInterruptsCounter))
    time.sleep(1)