from machine import Pin
import time

led = Pin(23, Pin.OUT)
button = Pin(22, Pin.IN, Pin.PULL_DOWN)

isLedOn = False

lastReading = button.value()
stableState = lastReading

lastDebounceTime = time.ticks_ms()
debounce_ms = 50   # debounce time in milliseconds

i = 0

while True:
    reading = button.value()
    now = time.ticks_ms()

    if reading != lastReading:
        lastDebounceTime = now  

    if time.ticks_diff(now, lastDebounceTime) > debounce_ms:
        if reading != stableState:
            stableState = reading

            # Detect button RELEASE (falling edge)
            if stableState == 0:
                isLedOn = not isLedOn
                led.value(isLedOn)

                print(
                    f"Button released | LED: {isLedOn} | time: {now} | loop: {i}"
                )

    lastReading = reading
    i += 1