百度IOT Hub (二) 设备节点相互通信

参见https://cloud.baidu.com/doc/IOT/s/Wjwvy7808

https://cloud.baidu.com/doc/IOT/s/vjwvy6y0v

一个物影子对应一个设备节点。针对同一物模型 Monitor创建两个物影子。

百度IOT Hub (二) 设备节点相互通信_第1张图片

MyMonitor_Sender 负责publish topic


import time
import paho.mqtt.client as mqtt
import datetime

def on_publish(msg, rc):
    if rc == 0:
        print("publish success, msg = " + msg)

def on_connect(client, userdata, flags, rc):
    print("Connection returned " + str(rc))

client = mqtt.Client(
    client_id="MyMonitor_Sender", #client_id
    clean_session=True,
    userdata=None,
    protocol='MQTTv311'
)

trust = "root_cert.pem"
user = "yourEndPoint/MyMonitor_Sender"
pwd = "xxxxxxxxx"
endpoint = "yourEndPoint.mqtt.iot.gz.baidubce.com"
port = 1884
topic = "$baidu/iot/general/as"   #目前百度Demo有问题。

client.tls_insecure_set(True)
client.tls_set(trust)
client.username_pw_set(user, pwd)
client.connect(endpoint, port, 60)
client.on_connect = on_connect

client.loop_start()
time.sleep(2)
count = 0
while count < 5:
    count = count + 1
    msg = str(datetime.datetime.now())
    rc , mid = client.publish(topic, payload=msg, qos=1) #qos
    on_publish(msg, rc)
    time.sleep(2)


MyMonitor 负责Subscribe topic :


#!/usr/bin/env python

import paho.mqtt.client as mqtt

trust = "root_cert.pem"
user = "yourEndPoint/MyMonitor"
pwd = "xxxxxxxxxxxx"
endpoint = "yourEndPoint.mqtt.iot.gz.baidubce.com"
port = 1884
topic = "$baidu/iot/general/as"

def on_connect(client, userdata, flags, rc):
    print("Connected with result code "+str(rc))
    client.subscribe(topic, qos=1) #qos

def on_message(client, userdata, msg):
    print("topic:"+msg.topic+" Message:"+str(msg.payload))
    
client = mqtt.Client(
    client_id="MyMonitor",
    clean_session=True,
    userdata=None,
    protocol='MQTTv31'
)

client.tls_insecure_set(True) 
client.tls_set(trust)
client.username_pw_set(user, pwd)
client.on_connect = on_connect
client.on_message = on_message
client.connect(endpoint, port, 60)
client.loop_forever()


运行结果 :

百度IOT Hub (二) 设备节点相互通信_第2张图片

百度IOT Hub (二) 设备节点相互通信_第3张图片

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