from machine import Pin, WDT
from time import sleep

# Create a Watchdog Timer with a 2-second timeout
watchdog_timer = WDT(timeout=2000)

# Define the button on pin 4
btn = Pin(4, Pin.IN, Pin.PULL_UP)

while True:
    try:
        # Print a message indicating the system is working well
        print("System is working well")
        sleep(1)
        
        # Reset the Watchdog Timer
        watchdog_timer.feed()
        
        # Check the button state
        if btn.value() == 0:
            print('Error!')
            # Attempt to divide by zero to trigger an error
            x = 0 / 0
    except ZeroDivisionError:
        # Handle the division by zero error
        print("Caught a division by zero error!")
        # Reset the Watchdog Timer
        watchdog_timer.feed()