from machine import Pin, Timer
from time import ticks_ms, ticks_diff

import network
import time
from umqtt.simple import MQTTClient

SSID = 'Wokwi-GUEST'
PASS = ''

BROKER    = 'broker.hivemq.com'
CLIENT_ID = 'Men94' # Change to a unique name to avoid collision

# Connect to WiFi
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(SSID,PASS)
print('WiFi ', end="")
while not wlan.isconnected():
    print(".", end="")
    time.sleep(0.5)
print(' connected to', wlan.ifconfig()[0])

# Connect to MQTT broker
client = MQTTClient(CLIENT_ID, BROKER)
try:
    client.connect()
    print('MQTT Connected')
except:
    print('MQTT Error')

sw = Pin(2, Pin.IN, Pin.PULL_UP)   # button -> GND

last = sw.value()                  # 1 = OFF, 0 = ON
debounce_ms = 40
tmr = Timer(0)

def sw_read(t):
    global last
    sw_read = sw.value()
    if sw_read != last:
        last = sw_read
        if sw_read == 0:
            print('ON')
            client.publish('ae_iot/Men/sw', 'On')
        else:
            print('OFF')
            client.publish('ae_iot/Men/sw', 'Off')

def _irq(pin):
    tmr.init(mode=Timer.ONE_SHOT, period=debounce_ms, callback=sw_read)

sw.irq(trigger=Pin.IRQ_FALLING | Pin.IRQ_RISING, handler=_irq)

while True:
    pass