from machine import Pin
from utime import sleep
import time

print("Hello, ESP32!")

led = Pin(15, Pin.OUT)
btn = Pin(4, Pin.IN, Pin.PULL_UP)

isBtnPressed = False

last = 0
def on_press(pin):
  global last, isBtnPressed
  now = time.ticks_ms()
  if(time.ticks_diff(now, last) > 200):
    print("Pressed ")
    isBtnPressed = not isBtnPressed
    last = now

btn.irq(trigger=Pin.IRQ_FALLING, handler=on_press)
while True:
  if isBtnPressed:
    led.on()
  else:
    led.off()
  sleep(0.5)