MQTT SSL AT Command throughing error. #963
Description
Answers checklist
- I have read the documentation ESP-AT Programming Guide and the issue is not addressed there.
- I have used the latest released firmware or have updated my ESP-AT branch (master or release) to the latest version and checked that the issue is present there.
- I have searched the issue tracker for a similar issue and not found a similar issue.
AT+GMR
Hi,
I am using the ESP8684H2 AT Command firmware for my application. I would like to use MQTT over SSL in my setup, but whenever I send MQTT SSL-related commands through the serial UART, I always receive an ERROR response.
Could you please provide the required menuconfig settings to enable SSL support? Additionally, I would appreciate it if you could share the documentation for MQTT SSL AT Commands.
Download Flash Firmware Link https://docs.espressif.com/projects/esp ... le_it.html
LOG:
AT+GMR
AT version:4.2.0.0-dev(s-8a71d66 - ESP32C2 - Jul 30 2025 07:10:44)
SDK version:v5.4.1-643-g8ad0d3d8f2-dirty
compile time(f57d966):Aug 21 2025 15:33:30
Bin version:v4.2.0.0-dev(ESP32C2-2MB)
OK
AT+CERTADD
ERROR
AT+SSLx
ERROR
AT+SSLx?
ERROR
AT+SSLx=?
ERROR
AT+CERTADD?
ERROR
AT+CERTADD=?
ERROR
I think this build does not support SSL. Please provide me the steps to enable SSL in menuconfig, or share the latest SSL-supported build link for my ESP32 chip.
ESP-AT Firmware Source
Download Flash Firmware Link https://docs.espressif.com/projects/esp ... le_it.html
Hardware Information
ESP32C2-2MB
Power Supply used
External 3.3V
What is the expected behavior?
MQTT SSL Relatted AT Command Throughing ERROR
What is the actual behavior?
AT+GMR
AT version:4.2.0.0-dev(s-8a71d66 - ESP32C2 - Jul 30 2025 07:10:44)
SDK version:v5.4.1-643-g8ad0d3d8f2-dirty
compile time(f57d9667d3dcc5a226f336dc50f82734fcf77682):Aug 21 2025 15:33:30
Bin version:v4.2.0.0-dev(ESP32C2-2MB)
OK
AT+CERTADD
ERROR
AT+SSLx
ERROR
AT+SSLx?
ERROR
AT+SSLx=?
ERROR
AT+CERTADD?
ERROR
AT+CERTADD=?
ERROR
Probability of recurrence
When Try Connection SSL With MQTT
AT+SYSRAM?
AT+SYSRAM?
+SYSRAM:97428,92556
OK
Steps to reproduce
I am powering the ESP-C2 chip with an external 3.3 V supply and accessing it directly through the command window using AT commands.
AT command port output
AT+CERTADD
ERROR
AT+SSLx
ERROR
AT+SSLx?
ERROR
AT+SSLx=?
ERROR
AT+CERTADD?
ERROR
AT+CERTADD=?
ERROR
AT log port output
AT+GMR
AT version:4.2.0.0-dev(s-8a71d66 - ESP32C2 - Jul 30 2025 07:10:44)
SDK version:v5.4.1-643-g8ad0d3d8f2-dirty
compile time(https://github.com/espressif/esp-at/commit/f57d9667d3dcc5a226f336dc50f82734fcf77682):Aug 21 2025 15:33:30
Bin version:v4.2.0.0-dev(ESP32C2-2MB)
OK
AT+CERTADD
ERROR
AT+SSLx
ERROR
AT+SSLx?
ERROR
AT+SSLx=?
ERROR
AT+CERTADD?
ERROR
AT+CERTADD=?
ERROR
More Information.
i tried with other module but same firmnware bin file i used.
AT+GMR
AT version:4.2.0.0-dev(s-8a71d66 - ESP32C2 - Jul 30 2025 07:10:44)
SDK version:v5.4.1-643-g8ad0d3d8f2-dirty
compile time(f57d9667d3dcc5a226f336dc50f82734fcf77682):Aug 21 2025 15:33:30
Bin version:v4.2.0.0-dev(ESP32C2-2MB)
OK