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Secure MQTT is not supported |
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# Enable URCs > AT+CEREG=1 < OK # Read network registration status > AT+CEREG? < +CEREG: 2,2 < OK # Read network registration status > AT+CEREG? < +CEREG: 2,5,"AB80","819965",9 < OK # Check the module connected to the network > AT+CGATT? < +CGATT: 1 < OK # Check to see if the PDP context has been activated. > AT+CGACT? < +CGACT: 1,1 < OK # Read IP address from module > AT+CGDCONT? < +CGDCONT: 1,"IP","vgesace.nb.iot","10.254.46.241",0,0,0,0,0,0 < OK # Set MQTT unique client ID. In the example IMEI from device > AT+UMQTT=0,"350857128129037" < +UMQTT: 0,1 < OK # Set MQTT local TCP port number > AT+UMQTT=1,1883 < +UMQTT: 1,1 < OK # Set remote MQTT server's name > AT+UMQTT=2,"broker.emqx.io" < +UMQTT: 2,1 < OK # Set remote MQTT server's IP address > AT+UMQTT=3,"44.195.202.69",1883 < +UMQTT: 3,1 < OK # Connect to the broker > AT+UMQTTC=1 < +UMQTTC: 1,1 < OK < +UUMQTTC: 1,0 """ Repeat the command "AT+UMQTTC=1" if the URC "+UUMQTTC: 1,0" does not arrive. """ # Subscribe to MQTT topic filter > AT+UMQTTC=4,0,"/exelonix/test" < +UMQTTC: 4,1 < OK < +UUMQTTC: 4,1,0,"/exelonix/test" # Publish MQTT message to topic name > AT+UMQTTC=2,0,0,"/exelonix/test","MQTT message" < +UMQTTC: 2,1 < OK # Wait of asynchronous notification (URC) of the reception of an MQTT message < +UUMQTTCM: 6,1 # Read MQTT messages received > AT+UMQTTC=6 < +UMQTTC: 6,1 < OK < +UUMQTTCM: 6,1 < Topic:/exelonix/test < Msg:MQTT message # Disconnect from the broker > AT+UMQTTC=0 < +UMQTTC: 0,1 < OK |
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