PYTHON进行MQTT通讯所需代码 import paho.mqtt.client as mqtt MQTT_USER = "hachina" MQTT_PASS = "hachina" client = mqtt.Client() client.username_pw_set(MQTT_USER, MQTT_USER) client.connect("192.168.1.109", 1883, 60) ient.publish("test", "on") client.disconnect() 1. 2. 3. 4. 5....
>从 '/python/mqtt' 接收到的消息是 'Publish msg :1' >给 topic '/python/mqtt' 发送了消息: 'Publish msg :2' >从 '/python/mqtt' 接收到的消息是 'Publish msg :2' >给 topic '/python/mqtt' 发送了消息: 'Publish msg :3' >从 '/python/mqtt' 接收到的消息是 'Publish msg :3' 1. 2...
使用Python库paho.mqtt.client 模拟mqtt client 连接broker,publish topic。 #-*-coding:utf-8-*-importpaho.mqtt.client as mqttclassmqttHandle(object):def__init__(self,mqtt_info): self.mqtt_info=mqtt_infodefon_connect(client, userdata, flags, rc):print("Connected with result code"+str(rc)) c...
mqttc.connect("AWS iot things endpoint",8883) mqttc.loop_start()whileTrue: mqttc.publish("Sensor/livingroom/reading", json.dumps(payloadJson) , qos =1) time.sleep(10)
publish_topic rc返回值为0则表明已经写入到了发送缓冲区,回调on_publish_topic表明publish成功。 取消消息订阅 重要 Python Link SDK的1.0.0至1.2.11版本中,设备与物联网平台连接断开后,继续调用以下接口取消消息订阅会抛出异常,需要您做好异常处理。在1.2.12版本后,该API执行失败后,会返回非零错误值,不再抛出异...
connect("mqtt.example.com", 1883) # 发布字节数组 topic = "mytopic" payload = bytearray([0x01, 0x02, 0x03, 0x04]) client.publish(topic, payload) # 断开MQTT连接 client.disconnect() 在上述代码中,首先创建一个MQTT客户端对象,并使用connect方法连接到MQTT代理。然后,指定要发布的主题(topic)和...
sub = MqttClient("conformity-sub:{seq}", connect=4) sub.subscribe("foo/bar", qos=2) pub.publish("foo/bar","grrr", qos=2)# receive PUBREC as responsepub.pubrel(pub.get_last_mid(), read_response=False)# triggers message deliveryevt = sub.recv()ifnotisinstance(evt, EventPublish)or...
defmain():on_mqtt_connect()on_publish("/test/server","Hello Python!",1)on_subscribe()whileTrue:passif__name__=='__main__':main() 注解函数: client.connect(self, host, port, keepalive, bind_address) client.publish(self, topic, payload, qos, retain) client.subscribe(self, topic, qo...
client.publish('my-data', value) time.sleep(5) 开发者ID:brahamcosoX3,项目名称:TheIoTLearningInitiative,代码行数:16,代码来源:main.py 示例2: on_message ▲点赞 5▼ # 需要导入模块: from Adafruit_IO import MQTTClient [as 别名]# 或者: from Adafruit_IO.MQTTClient importpublish[as 别名]defon...