from umqttsimple import MQTTClient
from machine import Pin
from time import sleep
import network
import random
ledBlue = Pin(2, Pin.OUT)
def callbackF(topic, payload):
print(topic)
if topic.decode() == 'topicName/led':
if payload.decode() == 'on':
ledBlue.value(1)
if payload.decode() == 'off':
ledBlue.value(0)
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect('Wokwi-GUEST', '')
while not wlan.isconnected():
sleep(0.1)
mqttc = MQTTClient(str(random.random()), 'broker.emqx.io', 1883, user='', password='',keepalive=60)
mqttc.connect()
mqttc.set_callback(callbackF)
mqttc.subscribe('topicName/led')
print ('Waiting for MQTT messages')
while True:
mqttc.check_msg()
sleep(0.05)