EMQX

windows下进入bin目录

./emqx start

EMQX Dashboard localhost:10803 初始 -u admin -P public

AT指令的使用

AT指令连接EMQX

AT #测试AT功能

AT+CWMODE=1 #设置模组进入STA模式

AT+CWJAP="ssid","password" #连接wifi

AT+MQTTUSERCFG=0,1,"1234","admin","public",0,0,"" #设置MQTT连接所需要的的参数，包括用户ID（不为空）、账号（admin）以及密码（public）

AT+MQTTCONN=0,"127.0.0.1",1883,0

AT+MQTTPUB=0,"ESP8266/online","1",0,0 #发布一条topic为ESP8266/online，message为1的数据，QOS设置为0

AT+MQTTSUB=0,"ESP8266/EMQX",0 #订阅一条topic为ESP8266/EMQX，QOS为0的数据

AT 指令连接TCP/UDP

AT+CIPSTART="TCP/UDP","本地IP",8080 #连接TCP服务器

AT+SAVETRANSLINK=1,"本地IP",8080,"TCP/UDP" #设置开机进入TCP透传模式，将配置参数写入flash中

AT+CIPMODE=1 #设置设备进入透传模式

AT+CIPSEND #在透传模式下传输数据，串口输入的数据均会发送到服务器中，之后可发送任意数据到服务器

mqtt客户端安装（tspi）

使用 Paho Python 连接到部署 | EMQX Platform 文档简介 - MQTTX 文档

使用源码安装

bash

git clone https://github.com/eclipse/paho.mqtt.python 
cd paho.mqtt.python 
python3 setup.py install

使用python安装

bash

pip3 install paho-mqtt

python

# python3.8

import random

from paho.mqtt import client as mqtt_client



broker = '192.168.31.33'
port = 1883
topic = "hello"
# generate client ID with pub prefix randomly
client_id = f'python-mqtt-{random.randint(0, 100)}'
username = 'admin'
password = 'public'


def connect_mqtt() -> mqtt_client:
    def on_connect(client, userdata, flags, rc):
        if rc == 0:
            print("Connected to MQTT Broker!")
        else:
            print("Failed to connect, return code %d\n", rc)

    client = mqtt_client.Client(mqtt_client.CallbackAPIVersion.VERSION1,client_id)
    # 此处CallbackAPIVersion.VERSION1 避免因paho.mqtt升级而不可用
    # client.tls_set(ca_certs='./server-ca.crt')
    client.username_pw_set(username, password)
    client.on_connect = on_connect
    client.connect(broker, port)
    return client


def subscribe(client: mqtt_client):
    def on_message(client, userdata, msg):
        print(f"Received `{msg.payload.decode()}` from `{msg.topic}` topic")
        if msg.payload.decode() == "1":
            command = f"echo {shlex.quote('heartbeat')} > /sys/class/leds/rgb-led-b/trigger"
            subprocess.run(["sh", "-c", command])

    client.subscribe(topic)
    client.on_message = on_message


def run():
    client = connect_mqtt()
    subscribe(client)
    client.loop_forever()


if __name__ == '__main__':
    run()

EMQX ​

AT指令的使用 ​

AT指令连接EMQX ​

AT 指令连接TCP/UDP ​

mqtt客户端安装（tspi） ​

使用源码安装 ​

使用python安装 ​