Mohamed@123
Newbie
I am using SIM808 module. It's working fine with normal MQTT over TCP. But it's not working while implementing secured MQTT. I am sending this command (AT+SSLSETROOT="C:\USER\HENRY_SSL.CRT")to set the root certificate (referred this document"SIM800 Series_MQTT_Application Note_V1.03"), the response I'm getting from gsm is "+CME ERROR: unknown". If I'm using this command (AT+SMSSL=1), same error I'm getting. I checked with HTTP commands it's working fine, But AT+HTTPSSL=1 command not working. The sim808 not responding SSL related commands.
But as per the simcom website sim808 supports SSL. Do I need to upgrade any firmware or is there any workaround to solve this issue? Any suggestions or guidance will be very helpful. Thanks in advance!
But as per the simcom website sim808 supports SSL. Do I need to upgrade any firmware or is there any workaround to solve this issue? Any suggestions or guidance will be very helpful. Thanks in advance!