Resolving AWS Certificate Connection Issues with ESP32-C3 Module

When usingESP32-C3-WROOM-02 module as a wireless communication module, with AT-V3.3.0.0 version, the client wantsto configure the MQTT certificate via AT commands, although the server can connect, the AT connection fails. Why is that?

The client used the AT+SYSFLASH command to update the certificate in the AT firmware,but when trying to connect to AWS, it reported an error (mqtt disconnected). Through MQTTX, the server connection was tested to verify that the client server configuration and certificate are normal.

Among them, the namespaces related to the AWS certificate are“mqtt_ca”, “mqtt_cert”, “mqtt_key”, erase and rewrite according to the certificate data length, and then read to confirm whether the certificate is written correctly.

Other server connection operationsrefer to the MQTT AT connection cloud example for guidance.

Shenzhen Qiming Cloud Technology Co., Ltd. is a partner and agent of Espressif in the Greater China region, focusing on innovation and research & development of IoT communication products and overall solutions, providing technical support and services for over3000 companies worldwide. We have developed our ownAI online support platformhttps://support.8ms.xyz/supports, with a BS architecturethat does not require login, providing customers with 7×24 uninterrupted after-sales technical support, ensuring the safety of customer projects!