button_handler.py

import machine
import asyncio
import sys


class ButtonHandler:
    def __init__(self, pin, callback, debounce=0.04):
        self._downCounter = 0
        self.pin = machine.Pin(pin, machine.Pin.IN)
        self.debounce = debounce
        self.callback = callback
        self.reset_counter = 10 / debounce

    async def poll(self):
        while True:
            if self._downCounter >= self.reset_counter:
                print("Resetting...")
                machine.reset()
            elif self._downCounter > 0 and self.pin.value() == 1:
                self._downCounter = 0
                try:
                    await self.callback()
                except Exception as e:
                    print("Uncaught exception in callback:", e)
                    sys.print_exception(e)
            elif self.pin.value() == 0:
                self._downCounter += 1
            await asyncio.sleep(self.debounce)