from machine import Pin
import time

# Initialize global counter
counter = 0

# Define the interrupt service routine
def isr(pin):
    global counter
    counter += 1
    print('Button pressed count:', counter)

# Setup the button input and attach the ISR
button = Pin(32, Pin.IN, Pin.PULL_UP)
button.irq(trigger=Pin.IRQ_FALLING, handler=isr)

# Run an infinite loop to keep the program running
while True:
    time.sleep(1)  # sleep to reduce CPU usage