BC92 connect to AWS Iot Core

IoT Modules LPWA Module
1

Hello,
i want to connect BC92 to AWS Iot Core MQTT server.

I can load my certificates with:

  • AT+QSSLCFG=1,1,“cacert”
  • AT+QSSLCFG=1,1,“clientkey”
  • AT+QSSLCFG=1,1,“clientcert”

Then set SSL ContextId with this command
AT+QMTCFG=“ssl”,3,1,1,1

Open Network is OK
AT+QMTOPEN=1,“*******-ats.iot.eu-central-1.amazonaws.com”,8883
OK
+CSCON: 1
+QMTOPEN: 1,0

Connection to broker goes wrong
AT+QMTCONN=1,“****”,“?SDK=CPPv2&Version=v1.14.1”,“”
OK
+CSCON: 1
+CSCON: 0
+QMTSTAT: 1,3
+QMTCONN: 1,2

I need the procedure for enable MQTT over SSL, there is any specific application note for this modem BC92?

Best Regards

Nicola

2

No SSL document can be found. There is no SSL sample reference in the MQTT document. If business needs, please change other modules or use non-SSL MQTT server

3

Hi,
This answer (BC92 mqtt application note) says that mqtt commands is standard and I can refer to BC66 documentation.

4

BC66 supports SSL,but BC92 not supports

5

Hi @Nicola

Maybe some of these commands could help you!
This is an example of connecting to mosquito open broker using SSL.

AT+QSSLCFG=1,5,"seclevel",2
OK

AT+QSSLCFG=1,5,"cacert"
>
"insert the CA cert"
CTRL-Z
+QSSLCFG: 1,5,"cacert",1452
OK

AT+QSSLCFG=1,5,"clientcert"
>
"insert the client certificate"
CTRL-Z
+QSSLCFG: 1,5,"clientcert",1298
OK

AT+QSSLCFG=1,5,"clientkey"
>
"insert the client key"
CTRL-Z
+QSSLCFG: 1,5,"clientkey",1704
OK

AT+QMTCFG="version",3,1
+CSCON: 0
OK

AT+QMTCFG="ssl",3,1,1,5
OK

AT+QMTOPEN=3,"test.mosquitto.org",8884
OK
+CSCON: 1
+QMTOPEN: 3,0

AT+QMTCONN=3,"nouvennbc92"
OK

+QMTCONN: 3,0,0

AT+QMTSUB=3,1,"nouvenn/",1
OK
+QMTSUB: 3,1,0,1

AT+QMTPUB=3,0,0,0,"nouvenn/"
>
TesteNouvenn
CTRL-Z

OK
+QMTPUB: 3,0,0
+QMTRECV: 3,0,nouvenn/,TesteNouvenn