BC66 doubt about configuring the CA certificate

Technical Subjects
1

Hello,

I am trying to follow the MQTT documentation to connect a BC66 module to AWS using an STM32, but I am having problems uploading the certificates via AT commands.

I have in a variable such as this, the certificate

char ca1_pem[1189] = "-----BEGIN CERTIFICATE-----\n"
                             "LINE1\n"
                             "LINE2\n"
                             ...
                             "-----END CERTIFICATE-----\n";

I use the following commands:

AT+QSCLK=0

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

OK

+CSCON: 0
AT+QSSLCFG=1,5,"cacert"

>
-----BEGIN CERTIFICATE-----
LINE1
LINE2
...
-----END CERTIFICATE-----
AT+QSSLCFG=1,5,"clientcert"
(NO MORE RESPONSES)

But after try to send the first certificate the module does not respond. I guess this is not the right way to do it but I don’t know how to proceed.

Thanks

2

You need to add the \r\n

3

I also tried this and it doesn’t work.

4

Please provide complete logs and certificates

5

I send this variable after the comand "AT+QSSLCFG=1,5,“cacert” " return “>”

 char ca1_pem[1209] = "-----BEGIN CERTIFICATE-----\r\n"
"MIIDQTCCAimgAwIBAgITBmyfz5m/jAo54vB4ikPmljZbyjANBgkqhkiG9w0BAQsF\r\n"
"ADA5MQswCQYDVQQGEwJVUzEPMA0GA1UEChMGQW1hem9uMRkwFwYDVQQDExBBbWF6\r\n"
"b24gUm9vdCBDQSAxMB4XDTE1MDUyNjAwMDAwMFoXDTM4MDExNzAwMDAwMFowOTEL\r\n"
"MAkGA1UEBhMCVVMxDzANBgNVBAoTbkFtYXpvbjEZMBcGA1UEAxMQQW1hem9uIFJv\r\n"
"b3QgQ0EgMTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALJ4gHHKeNXj\r\n"
"ca9HgFB0fW6Y14h29Jlo91ghYPl0hAEvrAIthtOgQ3pOsqTQNroBvo3bSMgHFzZM\r\n"
"9O6II8c+6zf1tRn4SWiw3te5djgdYZ6k/oI2peVKVuRF4fn9tBb6dNqcmzU5L/qw\r\n"
"IFAGbHrQgLKm+a/sRxmPUDgH3KKHOVj4utWp+UhnMJbulHheb4mjUcAwhmahRWa6\r\n"
"VOujw5H5SNz/0egwLX0tdHA114gk957EWW67c4cX8jJGKLhD+rcdqsq08p8kDi1L\r\n"
"93FcXmn/6pUCyziKrlA4b9v7LWIbxcceVOF34GfID5yHI9Y/QCB/IIDEgEw+OyQm\r\n"
"jgSubJrIqg0CAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8EBAMC\r\n"
"AYYwHQYDVR0OBBYEFIQYzIU03LwMlJQuCFmcx7IQTgoIMA0GCSqGSIb3DQEBCwUA\r\n"
"A4IBAQCY8jdaQZChGsV2USggNiMOruYou6r4lK5IpDB/G/wkjUu0yKGX9rbxenDI\r\n"
"U5PMCCjjmCXPI6T53iHTfIUJrU6adTrCC2qJeHZERxhlbI1Bjjt/msv0tadQ1wUs\r\n"
"N+gDS63pYaACbvXy8MWy7Vu33PqUxHeeE6V/Uq2V8viTO96LXFvKWlJbYK8U90vv\r\n"
"o/ufQJVtMVT8QtPHRh8jrdkPSHCa2XV4cdFyQzR1bldZwgJcJmApzyMZFo6IQ6XU\r\n"
"5MsI+yMRQ+hDKXJioaldXgjUkK642M4UwtBV8ob2xJNDd2ZhwLloQdeXeGADbkpy\r\n"
"rqXRfboQnoZsG4q5WTP468SQvvG5\r\n"
"-----END CERTIFICATE-----\r\n";

And in the logic analyzer I see this:

Response:

AT+QSCLK=0

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

OK

+CSCON: 0
AT+QSSLCFG=1,5,"cacert"

>
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

And there are no more responses. No matter what command I send after this, the module does not respond

6

“-----END CERTIFICATE-----\r\n”

You need to add HEX(1A)==>ctrl+z after it.