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AT command set
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33
<CR><LF>+OK=<topic,Qos,retained,payload><CR><LF>
Set
AT+MQTTLWTCFG=<topic,Qos,retained,payload><CR>
<CR><LF>+OK<CR><LF>
Parameter
topic:0~128 characters,default /will
Qos: 0,1,2.default 0.
retained
ON: enable
OFF:disable.default.
payload:0~128 characters,default offline
E.g.AT+MQTTLWTCFG=/will,0,ON,offline
2.5.61. AT+MQTTSSL
Function
Query/set whether to enable TLS/SSL
Query
AT+MQTTSSL<CR>
<CR><LF>+OK=<sslen,sslver,sslmod><CR><LF>
Set
AT+MQTTSSL=<sslen,sslver,sslmod><CR>
<CR><LF>+OK<CR><LF>
Parameter
sslen
ON: enable
OFF:disable.default.
sslver: protocol version
1: TLS1.0
2:TLS1.2
sslmod
0: do not verify certificate
1: only verify server certificate
2: verify server and client certificate
E.g.AT+MQTTSSL=ON,1,0
2.5.62. AT+MQTTPUBCUSEN
Function
Query/set publishing method of message
Format
Query
AT+MQTTPUBCUSEN<CR>