Released Firmware

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It is recommended to use the lastest version of firmware. Currently, Espressif releases AT firmware for the following ESP32-C2 series of modules.

Note

  • The released AT firmware only supports chip versions with a crystal oscillator frequency of 26 MHz. If your module uses a crystal oscillator frequency of 40 MHz, you can compile the ESP-AT project by following the steps in Compile ESP-AT Project Locally documentation. In the project configuration during the fifth step, make the following selections:

    • Component config -> Hardware Settings -> Main XTAL Config -> Main XTAL frequency -> 40 MHz

  • If you are unsure which AT firmware your module should use, please read the ESP-AT Firmware Differences document first. This document compares the differences among different ESP32-C2 AT firmwares in terms of supported command sets, hardware configurations, and module compatibility, helping you determine if there is a suitable firmware for your module’s hardware configuration.

ESP32-C2 2MB Series

ESP32-C2 4MB Series

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Please refer to the Subscribe to AT Releases documentation to subscribe to our version release notifications and stay updated on the latest releases.