how to connect Azure IOT hub using sim7600 ?
Posted: Thu May 20, 2021 11:18 pm
I am trying to connect to Azure IOT hub with sim7600 but it fails, as told by our IT dept engineer i need Baltimore SSL certificate to establish the connection, but I don't know what is wrong in the following command steps, but the connection is lost and data cannot be transferred.
here is the log output of AT command,
let me know if any more data is needed
here is the log output of AT command,
Code: Select all
AT+CSQ
+CSQ: 29,99
OK
AT+CREG?
+CREG: 0,1
OK
AT+CGREG?
+CGREG: 0,1
OK
AT+CGSOCKCONT=1,"IP","Jionet"
OK
AT+CGPADDR
+CGPADDR: 1,25.34.200.216
OK
AT+CGACT?
+CGACT: 1,1
AT+CSSLCFG="sslversion",0,4
OK
AT+CSSLCFG="authmode",0,1
OK
AT+CCERTDOWN="BaltimoreCyberTrustRoot.crt.pem",1262
AT+CSSLCFG="cacert",0,"BaltimoreCyberTrustRoot.crt.pem"
OK
AT+CCERTLIST
+CCERTLIST: "BaltimoreCyberTrustRoot.crt.pem"
OK
AT+NETOPEN
OK
+NETOPEN: 0
AT+CMQTTSTART
+CMQTTSTART: 0
OK
AT+CMQTTACCQ=0, "testdev"
OK
AT+CMQTTSSLCFG=0,0
OK
AT+CMQTTWILLTOPIC=0,32
devices/testdev/messages/events/
OK
AT+CMQTTWILLMSG=0,17,1
>SIMCOM Connected!
OK
AT+CMQTTCONNECT=0,"tcp://IOTHUB.azure-devices.net:8883",90,1,"IOTHUB.azure-devices.net/testdev/?api-version=2018-06-30","SharedAccessSignaturesr=IOTHUB.azuredevices.net%2Fdevices%2Ftestdev&sig=0xNig7Hcyd9MJUiEyGCQLASM5pTEB1NP7MAy%2FssAi58%3D&se=1639212345"
OK
+CMQTTCONNECT: 0,6
+CMQTTCONNLOST: 0,1