async def wifi_config(): global cfg global client global CLIENT_ID print('load configuration') f = open('config.json') cfg = json.loads(f.read()) f.close() print(cfg) print('starting wifi connection') wlan = network.WLAN(network.STA_IF) wlan.active(True) wlan.connect(cfg['ap']['ssid'], cfg['ap']['pwd']) while not wlan.isconnected(): print('wait connection...') await asyncio.sleep(1) wlan.ifconfig() mqtt_cfg = cfg['mqtt'] client = MQTTClient( CLIENT_ID, mqtt_cfg["broker"], port=mqtt_cfg["port"], keepalive=mqtt_cfg["keepalive"]) will_msg = {'id': CLIENT_ID, 'status': False, 'msg': 'The connection from this device is lost:(' } client.set_last_will('/device/will/status', json.dumps(will_msg)) client.set_callback(on_message) client.connect() client.subscribe('/device/{0}/switch'.format(CLIENT_ID.decode("utf-8")), 0)
def main(led_pin): i2c = I2C(-1, scl=Pin(5), sda=Pin(4)) pca = Servos(i2c, min_us=500, max_us=2500) def domoticz_out(topic, msg): data = json.loads(msg) if data['idx'] == settings.CURTAIN_IDX: if data['nvalue'] == 1: pca.position(0, us=500) else: pca.position(0, us=1500) mqtt = MQTTClient(settings.CLIENT_ID, settings.MQTT_SERVER, user=settings.MQTT_USER, password=settings.MQTT_PASSWD) mqtt.set_callback(domoticz_out) mqtt.connect() mqtt.subscribe(settings.SUB_TOPIC) print('Connected to {}, subscribed to {} topic'.format( settings.MQTT_SERVER, settings.SUB_TOPIC)) while True: led_pin.value(0) mqtt.check_msg() lightsleep(100) led_pin.value(1) lightsleep(1000)
def start(self): """ Initialize MQTT Connection """ print ("Creating client") self.client = MQTTClient( client_id = self.device_name, server = mqtt_config['address'], user = mqtt_config['username'], password = mqtt_config['user_key'], port = mqtt_config['port']) print ("Setting timeout") self.client.settimeout = self.set_timeout print ("Setting callback") self.client.set_callback(self.sub_cb) print ("Connecting mqtt", mqtt_config['address'], mqtt_config['username'], mqtt_config['user_key'], mqtt_config['port']) res = self.client.connect() if (res == -1): print ("Failed to connect") pycom.rgbled(0xB900B9) return print ("Subscribing") self.client.subscribe(topic=self.topic) self.client.set_last_will(self.resp_topic, "Bye") print ("Listening") pycom.rgbled(0x00ff00) Timer.Alarm(self.check_new_messages, 0.0075, periodic=True) gc.collect()
def __init__(self): self.keys = [Pin(p, Pin.IN) for p in [35, 36, 39, 34]] self.keymatch = ["Key1", "Key2", "Key3", "Key4"] self.select = 1 self.displayInit() self.wifi_name = "NEUI" self.wifi_SSID = "NEUI3187" #MQTT服务端信息 self.SERVER = "192.168.5.121" #MQTT服务器地址 self.SERVER_PORT = 1883 #MQTT服务器端口 self.contentEVICE_ID = "wc001" #设备ID self.TOPIC1 = b"/cloud-skids/online/dev/" + self.contentEVICE_ID self.TOPIC2 = b"/cloud-skids/message/server/" + self.contentEVICE_ID self.CLIENT_ID = "7e035cd4-15b4-4d4b-a706-abdb8151c57d" self.uart = UART(1, baudrate=115200, bits=8, parity=0, rx=18, tx=19, stop=1) #设备状态 self.ON = "1" self.OFF = "0" self.content = " " #初始化要发送的信息 self.client = MQTTClient(self.CLIENT_ID, self.SERVER, self.SERVER_PORT) #定义一个mqtt实例
def __init__(self, config, data_collector, logger): self.sensor = data_collector self.Config = config self.Logger = logger self.AIO_SERVER = config["adafruit"]["AIO_SERVER"] self.AIO_PORT = config["adafruit"]["AIO_PORT"] self.AIO_USER = config["adafruit"]["AIO_USER"] self.AIO_KEY = config["adafruit"]["AIO_KEY"] self.AIO_CLIENT_ID = ubinascii.hexlify(machine.unique_id()) self.AIO_CONTROL_FEED = config["adafruit"]["AIO_CONTROL_FEED"] self.AIO_MOVEMENT_FEED = config["adafruit"]["AIO_MOVEMENT_FEED"] self.AIO_GPS_FEED = config["adafruit"]["AIO_GPS_FEED"] self.AIO_ACCELERATION_FEED = config["adafruit"][ "AIO_ACCELERATION_FEED"] self.last_random_sent_ticks = config["adafruit"][ "last_random_sent_ticks"] self.post_per_minute = config["adafruit"]["post_per_minute"] """Finding and connecting to network""" self.wlan = WLAN(mode=WLAN.STA) nets = self.wlan.scan() print("Scanning for Wifi") for net in nets: for knowNet in self.Config["network"]: if net.ssid == knowNet["name"]: print(net.ssid + ' found!') self.wlan.connect(net.ssid, auth=(net.sec, knowNet["password"]), timeout=5000) while not self.wlan.isconnected(): machine.idle() # save power while waiting print('WLAN connection succeeded!') break self.client = MQTTClient(self.AIO_CLIENT_ID, self.AIO_SERVER, self.AIO_PORT, self.AIO_USER, self.AIO_KEY)
def _init_mqtt(self): self.bs_config = bluestone_config.BluestoneConfig( 'bluestone_config.json') self.bs_data_config = bluestone_config.BluestoneConfig( 'bluestone_data.json') self.bs_gpio = bluestone_gpio.BluestoneGPIO() self.bs_pwm = bluestone_pwm.BluestonePWM() self.bs_fota = bluestone_fota.BluestoneFOTA() self.bs_uart = bluestone_uart.BlueStoneUart(None) # 创建一个MQTT实例 self.client = MQTTClient(client_id=self.client_id, server=self.server, port=self.port, user=self.user, password=self.password, keepalive=30) _mqtt_log.info( "Start a new mqtt client, id:{}, server:{}, port:{}".format( self.client_id, self.server, self.port)) self.client.set_callback(self._sub_callback) # 设置消息回调 self.client.connect() # 建立连接 #sub_topic = self.subscribe_topic.format(self.sn) _mqtt_log.info("Subscribe topic is {}".format(self.subscribe_topic)) self.client.subscribe(self.subscribe_topic) # 订阅主题
def wifi(): global client global CLIENT_ID client = MQTTClient(CLIENT_ID, '27.254.63.34', port=1883, user='******', password='******') client.connect() print("MQTT client id:", CLIENT_ID) time.sleep(2) run()
def wifi(): global client global CLIENT_ID client = MQTTClient(CLIENT_ID, 'q.emqtt.com', port=1883) client.connect() print("MQTT client id:", CLIENT_ID) time.sleep(2) run()
def wifi(): global client global CLIENT_ID client = MQTTClient(CLIENT_ID, config.BROKER) client.connect() print("MQTT client id:", CLIENT_ID) time.sleep(2) run()
def mqtt_connect(): client = MQTTClient(CLIENT_ID, SERVER, port=1883) client.set_callback(mqtt_callback) client.connect() print("mqtt connect success") client.subscribe(TOPIC) while True: client.check_msg() time.sleep(1) print("wait ...")
def __init__(self): # 创建一个mqtt实例 self.client_id = "868540051778302" self.downtopic = "quec/868540051778302/down" self.uptopic = "quec/868540051778302/up" self.mqttserver = "southbound.quectel.com" self.mqttport = 1883 self.uername = "868540051778302" self.passwd = "d40332b8211097ffbb0e2645c2efec95" self.mqtt_client = MQTTClient(self.client_id, self.mqttserver, self.mqttport, self.uername, self.passwd)
def wifi(cfg): global client global CLIENT_ID client = MQTTClient(CLIENT_ID, cfg['broker'], port=cfg['port'], keepalive=cfg["keepalive"]) client.connect() print("MQTT client id:", CLIENT_ID) time.sleep(2) run()
def serverConnect(): global CLIENT_ID CLIENT_ID = "fipy-pycom" # The name you want to call your device. SERVER = "things.ubidots.com" # The address to the Ubidots server. PORT = 1883 USER = keys.ubidots_token() # Your Ubidots token. KEY = "" # Should be left empty. # END OFF SETTINGS # Using the MQTT protocol to connect to Ubidots. global client client = MQTTClient(CLIENT_ID, SERVER, PORT, USER, KEY) client.connect() # Establishes the connection to Ubidots.
def sendmq(msg): UNIQUE_ID = ubinascii.hexlify(machine.unique_id()) MQTT_BROKER = "192.168.2.68" MQTT_PORT = 1883 MQTT_TOPIC = "iot-2/type/lopy/id/" + "buhardilla" + "/evt/presence1/fmt/json" print(MQTT_TOPIC) mqtt_client = MQTTClient(UNIQUE_ID, MQTT_BROKER, port=MQTT_PORT) mqtt_client.settimeout = settimeout mqtt_client.set_callback(t3_publication) mqtt_client.connect() result = mqtt_client.publish(MQTT_TOPIC, json.dumps(msg)) mqtt_client.disconnect() return result
def MQTTclient(self): "Protocolo MQTT en modo cliente, Configuración" from ubinascii import hexlify from machine import unique_id from umqtt import MQTTClient # import socket library (umqtt) # Config SERVER = "172.24.1.1" # <----------------------------CONFIGURE: BROKER CLIENT_ID = hexlify(unique_id()) self.TOPIC1 = b"/cultivo/temp" self.TOPIC2 = b"/cultivo/hum" self.TOPIC3 = b"/sensor1/set/temp" self.TOPIC4 = b"/sensor1/set/hum" self.TOPIC5 = b"/sensor1/alarma" self.client_mqtt = MQTTClient(CLIENT_ID, SERVER)
def mqtt_connection(cfg): global client global CLIENT_ID client = MQTTClient(CLIENT_ID, cfg["broker"], port=cfg["port"], keepalive=cfg["keepalive"]) will_msg = { 'id': CLIENT_ID, 'status': False, 'msg': 'The connection from this device is lost:(' } client.set_last_will('/device/will/status', json.dumps(will_msg)) client.set_callback(on_message) client.connect() client.subscribe('/device/{0}/switch'.format(CLIENT_ID.decode("utf-8")), 0)
def connect_and_subscribe(): global client client = MQTTClient(CONFIG['client_id'], CONFIG['broker']) client.set_callback(callback) client.connect() print("Connected to {}".format(CONFIG['broker'])) topic = topic_name(b"control") client.subscribe(topic) print("Subscribed to {}".format(topic))
def envioMQTT(server=SERVER, topic="/foo", dato=None): try: c = MQTTClient(CLIENT_ID, server) c.connect() c.publish(topic, dato) sleep_ms(200) c.disconnect() #led.value(1) except Exception as e: pass
def __init__(self, playerName, computerName): #初始化 #网络设定 #WiFi名称和密码 self.wifi_name = "NEUI" self.wifi_SSID = "NEUI3187" #MQTT服务端信息 SERVER = "112.125.89.85" #MQTT服务器地址 SERVER_PORT = 3881 #MQTT服务器端口 DEVICE_ID = "wc001" #设备ID TOPIC1 = b"/cloud-skids/online/dev/" + DEVICE_ID self.TOPIC2 = b"/cloud-skids/message/server/" + DEVICE_ID CLIENT_ID = "f25410646a8348f8a1726a3890ad8f82" #设备状态 ON = "1" OFF = "0" #对方的选择 self.d = ["1", "2", "3"] self.choose = 0 self.mark = 0 #启动网络连接 self.do_connect() gc.collect() self.client = MQTTClient(CLIENT_ID, SERVER, SERVER_PORT) self.client.set_callback(self.sub_cb) #设置回调 self.client.connect() print("连接到服务器:%s" % SERVER) self.client.publish(TOPIC1, ON) #发布“1”到TOPIC1 self.client.subscribe(self.TOPIC2) #订阅TOPIC #游戏设定 self.gameStart = False self.playerName = playerName self.computerName = computerName self.playerScore = 0 self.computerScore = 0 self.equalNum = 0 self.playerStatus = 0 self.playerMessage = "" self.computerStatus = 0 self.computerMessage = "" for p in pins: keys.append(Pin(p, Pin.IN)) self.displayInit()
def connect(self): """ Attempts to establish a connection to Losant. Will be blocking or non-blocking depending on the value of the 'blocking' argument. When non-blocking, the 'loop' function must be called to perform network activity. """ if self._mqtt_client: return self._initial_connect = True port = 1883 self._mqtt_client = MQTTClient(self._device_id, self.mqtt_endpoint, port, self._key, self._secret) print("Connecting to Losant as {}".format(self._device_id)) resp = self._mqtt_client.connect() self._cb_client_connect(resp)
def connect(self, keepAlive, clean_session): self.formatConnectInfo() mqtt_client = MQTTClient(self.clientid, self.mqtt_server, 1883, self.username, self.password, keepAlive) mqtt_client.connect(clean_session=clean_session) mqtt_client.set_callback(self.proc) return mqtt_client
def connect(self, mqt_id, secret, hmac_msg, keepAlive, clean_session, ssl): mqt_server = MQTT_SERVER.format(self.productKey) self.password = hmac.new(bytes(secret, "utf8"), msg=bytes(hmac_msg, "utf8"), digestmod=sha256).hexdigest() mqtt_client = MQTTClient(mqt_id, mqt_server, self.port, self.username, self.password, keepAlive, ssl=ssl) mqtt_client.set_callback(self.proc) mqtt_client.connect(clean_session=clean_session) return mqtt_client
class pics(): def __init__(self): self.keys = [Pin(p, Pin.IN) for p in [35, 36, 39, 34]] self.keymatch = ["Key1", "Key2", "Key3", "Key4"] self.select = 1 self.displayInit() self.wifi_name = "NEUI" self.wifi_SSID = "NEUI3187" #MQTT服务端信息 self.SERVER = "192.168.5.121" #MQTT服务器地址 self.SERVER_PORT = 1883 #MQTT服务器端口 self.contentEVICE_ID = "wc001" #设备ID self.TOPIC1 = b"/cloud-skids/online/dev/" + self.contentEVICE_ID self.TOPIC2 = b"/cloud-skids/message/server/" + self.contentEVICE_ID self.CLIENT_ID = "7e035cd4-15b4-4d4b-a706-abdb8151c57d" self.uart = UART(1, baudrate=115200, bits=8, parity=0, rx=18, tx=19, stop=1) #设备状态 self.ON = "1" self.OFF = "0" self.content = " " #初始化要发送的信息 self.client = MQTTClient(self.CLIENT_ID, self.SERVER, self.SERVER_PORT) #定义一个mqtt实例 def drawInterface(self): #界面初始化 bmp1 = ubitmap.BitmapFromFile("pic/boy") bmp2 = ubitmap.BitmapFromFile("pic/girl") bmp1.draw(20, 200) #显示boy图片 bmp2.draw(140, 200) #显示girl图片 screen.drawline(0, 160, 240, 160, 2, 0xff0000) def do_connect(self): sta_if = network.WLAN(network.STA_IF) #STA模式 ap_if = network.WLAN(network.AP_IF) #AP模式 if ap_if.active(): ap_if.active(False) #关闭AP if not sta_if.isconnected(): print('Connecting to network...') sta_if.active(True) #激活STA sta_if.connect(self.wifi_name, self.wifi_SSID) #WiFi的SSID和密码 while not sta_if.isconnected(): pass print('Network config:', sta_if.ifconfig()) gc.collect() def selectInit(self): #选择表情初始化 screen.drawline(20, 200, 92, 200, 2, 0xff0000) screen.drawline(92, 200, 92, 272, 2, 0xff0000) screen.drawline(92, 272, 20, 272, 2, 0xff0000) screen.drawline(20, 272, 20, 200, 2, 0xff0000) def displayInit(self): #初始化 screen.clear() self.drawInterface() self.selectInit() def esp(self): self.client.set_callback(self.sub_cb) #设置回调 self.client.connect() print("连接到服务器:%s" % self.SERVER) self.client.publish(self.TOPIC1, self.ON) #发布“1”到TOPIC1 self.client.subscribe(self.TOPIC2) #订阅TOPIC #display.text("从微信取得信息", 20, 20, 0xf000, 0xffff) def keyboardEvent(self, key): if self.keymatch[key] == "Key1": #右移键,选择要发送的表情 if self.select % 2 == 1: #用红色框选中boy表情 screen.drawline(20, 200, 92, 200, 2, 0xffffff) screen.drawline(92, 200, 92, 272, 2, 0xffffff) screen.drawline(92, 272, 20, 272, 2, 0xffffff) screen.drawline(20, 272, 20, 200, 2, 0xffffff) screen.drawline(140, 200, 212, 200, 2, 0xff0000) screen.drawline(212, 200, 212, 272, 2, 0xff0000) screen.drawline(212, 272, 140, 272, 2, 0xff0000) screen.drawline(140, 272, 140, 200, 2, 0xff0000) self.select += 1 else: #用红色框选中girl表情 screen.drawline(140, 200, 212, 200, 2, 0xffffff) screen.drawline(212, 200, 212, 272, 2, 0xffffff) screen.drawline(212, 272, 140, 272, 2, 0xffffff) screen.drawline(140, 272, 140, 200, 2, 0xffffff) screen.drawline(20, 200, 92, 200, 2, 0xff0000) screen.drawline(92, 200, 92, 272, 2, 0xff0000) screen.drawline(92, 272, 20, 272, 2, 0xff0000) screen.drawline(20, 272, 20, 200, 2, 0xff0000) self.select += 1 if self.keymatch[key] == "Key3": #发送表情按键 if self.select % 2 == 1: #显示已发送boy表情 bmp1 = ubitmap.BitmapFromFile("pic/boy") bmp1.draw(140, 40) self.content = "001" self.client.publish(self.TOPIC2, self.content) #给服务器发送boy表情的号码 else: #显示已发送girl表情 bmp2 = ubitmap.BitmapFromFile("pic/girl") bmp2.draw(140, 40) self.content = "002" self.client.publish(self.TOPIC2, self.content) #给服务器发送girl表情的号码 def sub_cb(self, topic, message): #从服务器接受信息 message = message.decode() print("服务器发来信息:%s" % message) #global count if message == "001": #收到boy表情号码显示boy表情 bmp1 = ubitmap.BitmapFromFile("pic/boy") bmp1.draw(140, 40) elif message == "002": #收到girl表情号码显示girl表情 bmp1 = ubitmap.BitmapFromFile("pic/girl") bmp1.draw(140, 40) def start(self): try: while True: self.client.check_msg() #检查是否收到信息 i = 0 #用来辅助判断那个按键被按下 j = -1 for k in self.keys: #检查按键是否被按下 if (k.value() == 0): ##如果按键被按下 if i != j: j = i self.keyboardEvent(i) #触发相应按键对应事件 i = i + 1 if (i > 3): i = 0 time.sleep_ms(130) finally: self.client.disconnect() print("MQTT连接断开")
def recepcionMQTT(server=SERVER, topic=TOPIC3): c = MQTTClient(CLIENT_ID, server) # Subscribed messages will be delivered to this callback c.set_callback(sub_cb) c.connect() c.subscribe(topic) #print("Connected to %s, subscribed to %s topic" % (server, topic)) try: c.wait_msg() finally: c.disconnect()
while not wlan.isconnected(): # Code waits here until WiFi connects machine.idle() print("Connected to Wifi") print(wlan.ifconfig()) pycom.rgbled(0xf0d0000) # Status orange: partially working time.sleep(1) pycom.rgbled(0x000000) # Use the MQTT protocol to connect to Bluemix print("Try to connect to IBM iot") myiotorg = "5q6gu4" client = MQTTClient("d:" + myiotorg + ":playbulb:playbulb30", myiotorg + ".messaging.internetofthings.ibmcloud.com", port=1883, user="******", password="******") #client = MQTTClient(“d:<ORG Id>:<Device Type>:<Device Id>“, “<ORG Id>.messaging.internetofthings.ibmcloud.com”,user=”use-token-auth”, password=”<TOKEN>“, port=1883) #print(client) # Subscribed messages will be delivered to this callback client.set_callback(sub_cb) client.connect() #client.subscribe(AIO_CONTROL_FEED) #print("Connected to %s, subscribed to %s topic" % (AIO_SERVER, AIO_CONTROL_FEED)) print("Connected to Bluemix") pycom.rgbled(0x00f000) # Status green: online to Bluemix #Publish a Hallo #msg={"id":'+ubinascii.hexlify(network.LoRa().mac()).decode("utf-8")+',"value":"hello","type":"GW","msgid":0} #o = json.loads(msg) #o['type']="GW"
led = machine.Pin(2, machine.Pin.OUT, value=1) s_dht = dht.DHT22(machine.Pin(4)) s_dht.measure() print("Temperatura ", s_dht.temperature()) # Debug print("Temperatura ", s_dht.humidity()) # Debug # Config SERVER = "192.168.31.16" CLIENT_ID = hexlify(unique_id()) TOPIC1 = b"/cultivo/temp" TOPIC2 = b"/cultivo/hum" TOPIC3 = b"/sensor1/set/temp" TOPIC4 = b"/sensor1/set/hum" TOPIC5 = b"/cultivo/alarma" state = 0 client_mqtt = MQTTClient(CLIENT_ID, SERVER) # Envio client_mqtt.connect() client_mqtt.publish(TOPIC1, str(s_dht.temperature())) client_mqtt.publish(TOPIC2, str(s_dht.humidity())) sleep_ms(200) client_mqtt.disconnect() # Recepcion def sub_cb(topic, msg): global state print((topic, msg)) if msg == b"on": led.value(0) state = 1
from umqtt import MQTTClient import machine, ubinascii import time import network wlan = network.WLAN(network.STA_IF) wlan.active(True) wlan.connect('HUAWEI', '0000000000') while not wlan.isconnected(): print('Wait connection') time.sleep(1) def on_message(topic, msg): print(topic, msg) CLIENT_ID = ubinascii.hexlify(machine.unique_id()) client = MQTTClient(CLIENT_ID, 'iot.eclipse.org', port=1883) client.set_callback(on_message) client.connect() client.subscribe('micro/python/test') while True: client.wait_msg()
from umqtt import MQTTClient state = 0 def sub_cb(topic, msg): global state print("subscribe recv:") print(topic, msg) state = 1 #创建一个 mqtt 实例 c = MQTTClient("umqtt_client", "mq.tongxinmao.com", '18830') #设置消息回调 c.set_callback(sub_cb) #建立连接 c.connect() #订阅主题 c.subscribe(b"/public/TEST/quecpython") print( "Connected to mq.tongxinmao.com, subscribed to /public/TEST/quecpython topic" ) #发布消息 c.publish(b"/public/TEST/quecpython", b"my name is Kingka!") print("Publish topic: /public/TEST/quecpython, msg: my name is Quecpython") while True: c.wait_msg() #阻塞函数,监听消息 if state == 1: break #关闭连接
from umqtt import MQTTClient import machine, ubinascii import time, gc import network import json, errno from dht import DHT22 from machine import Pin, I2C, Timer, ADC from ssd1306 import SSD1306_I2C import _thread as th a1 = ADC(Pin(32)) a2 = ADC(Pin(33)) a3 = ADC(Pin(34)) scl = Pin(22) sda = Pin(21) i2c = I2C(scl=scl, sda=sda, freq=100000) oled = SSD1306_I2C(128, 64, i2c) oled.fill(0) oled.text('ESP32', 45, 5) oled.text('MicroPython', 20, 20) oled.text('System Startimg', 3, 35) oled.show() dhtPn = Pin(17) d = DHT22(dhtPn) tim0 = Timer(0) wlan = network.WLAN(network.STA_IF) wlan.active(True) wlan.connect('see_dum', '0863219053') while not wlan.isconnected(): print('Wait connection') time.sleep(1)
from machine import I2C, Pin from dht12 import DHT12 from BH1750 import BH1750 import ssd1306 import time, json, machine, ubinascii import _thread as th from umqtt import MQTTClient import wifi_connect as wlan CLIENT_ID = ubinascii.hexlify(machine.unique_id()) client = None # OLED rst = Pin(16, Pin.OUT) rst.value(1) oledScl = Pin(15, Pin.OUT, Pin.PULL_UP) oledSda = Pin(4, Pin.OUT, Pin.PULL_UP) i2cOled = I2C(scl=oledScl, sda=oledSda, freq=450000) oled = ssd1306.SSD1306_I2C(128, 64, i2cOled, addr=0x3c) oled.fill(0) oled.text('SENSOR', 40, 5) oled.text('MicroPython', 10, 20) oled.text('Waiting...', 10, 35) oled.show() wlan.connect() oled.text('{0}'.format(wlan.get_ip()), 10, 50) oled.show() # MQTTClient time.sleep(3) def on_message(topic, msg): print(topic, msg)