AT Command for Communication with AWS

Hello All,

I am Using EC21 LTE GSM/GPRS with STM32 .

I need help regarding AT Command to Communicate with AWS MQTT.

  1. How Can i Store AWS CA cerificate and All other Certificate Into RAM using AT Command ?
  2. in STM32 Code how can i define Certificate to communicate with AWS ?
  3. if anyone have Example code with STM32 that is very helpful for me

Hello aditya1127, thank you for your question
You can use the AT+QFUPL=“RAM:cacert.pem”,1758,100 command to store CA and other certificates in RAM. Please refer to the attached document for the specific command usageQuectel_LTE_Standard_MQTT_Application_Note_V1.2.pdf (685.3 KB) . If you use a CA certificate, it means that you are using SSL encryption. A copy of the SSL usage document is attached for your reference.Quectel_EC2x&EG9x&EM05_SSL_AT_Commands_Manual_V1.0.pdf (317.1 KB)
Regarding sample code, we do not provide STM32 sample code.
If you have any questions, please feel free to ask on Quectel Forums, thank you.