NBIOT 连接自建服务器

湖畔科技

适用于移远的NB模块BC20，BC26，BC28，BC35
調試流程
AT+QMTCFG="version",0,4  
OK
AT+QMTOPEN=0,"222.221.18.162",1883
OK

+QMTOPEN: 0,0
AT+QMTCONN=0,"123456","ABC","A123456"
OK

+QMTCONN: 0,0,0
AT+QMTSUB=0,1,"123",0
OK

+QMTSUB: 0,1,0,0
AT+QMTPUB=0,0,0,0,"123"
>i am bc28 sj

OK

+QMTPUB: 0,0,0

+QMTRECV: 0,0,"123",i am bc28 sj

AT+QMTPUB=0,0,0,0,"123"
>
+QMTRECV: 0,0,"123",5587
i am bc28 sj

OK

+QMTPUB: 0,0,0

+QMTRECV: 0,0,"123",i am bc28 sj


流程解析
AT+QMTCFG="version",0,4 //设置MQTT的版本为3.1
OK
AT+QMTOPEN=0,"222.221.18.162",1883  //连接服务器，服务器IP为：222.221.18.162（需要改成自己的），端口号为：1883
OK

+QMTOPEN: 0,0  //需要返回这个之后才能继续往下做
AT+QMTCONN=0,"123456","ABC","A123456" //发送验证信息，123456是clientID，ABC是用户名，A123456是密码
OK

+QMTCONN: 0,0,0  //连接服务器成功
AT+QMTSUB=0,1,"123",0  //订阅信息 123是Topic
AT+QMTPUB=0,0,0,0,"123" //发布信息 123是Topic
>//出现>的时候才发以下内容
i am bc28 sj  //这是内容
1A  //发十六进制的1A作为结束符号。