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You can exercise the basics of MQTT in the menu “PC IOT” → §https://momoiot.co.kr/pc/iot/mqtt/no-security-mosquitto-client/

 

MQTT Exercise with WIFI Module (without Security)

Let’s set up MXCHIP’s WIFI module as an MQTT client and connect to MQTT Broker/Server to communicate.

 

 

 

1. Test system configuration

 

♦ Run MQTT broker on PC.

♦ Set the mobile phone’s MQTT client to subscribe to a topic called “/momo” and to publish a message to a topic called “/toto”.

♦ Set the WIFI Module subscribe to the topic “/toto” and publish a message to the topic “/momo“.

.

 

 

 

 

2.  Set up MQTT Broker/Server on PC and MQTT Client on mobile.

First, check the IP of the PC(MQTT broker/server IP address), and then run the MQTT broker.

In the mobile MQTT client, set as shown on the right.

 

             

 

 

 

3.  Set WIFI module as MQTT Client 

 

No Command & Response Description
1 AT+WJAP=MOMOIOT,momo1234\r Connect to AP/AP router

OK

+WEVNET:STATION UP

 
2 AT+MQTTEVENT=ON\r Enable function of the event push
OK  
3 AT+MQTTSOCK=192.168.0.2,1883\r Set the broker’s IP/URL and port for MQTT socket
OK  
4 AT+MQTTCID=momo8zx2\r Set client ID
OK  
5 AT+MQTTSTART\r Start MQTT service

OK

+MQTTEVENT:CONNECT,SUCCESS

 
6 AT+MQTTSUB=0,/momo,0\r Set topic to subscribe

OK

+MQTTEVENT:0,SUBSCRIBE,SUCCESS

 
7 AT+MQTTPUB=/toto,0\r Set topic to publish
OK  
8 AT+MQTTSEND=6\r Publish data
>  
>123456 Input data within 0.5sec after receiving “<“
+MQTTEVENT:PUBLISH,SUCCESS  
9 AT+MQTTUNSUB=0\r Unsubscribe from the topic

OK

+MQTTEVENT:0,UNSUBSCRIBE,SUCCESS

 
10 AT+MQTTCLOSE\r Close MQTT service/socket

OK

+MQTTEVENT:CLOSE,SUCCESS

 

 

 

 

 

 

4.  모바일에 MQTT Client 설정

 

 

 

 

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