Espressif ESP32-S2 - Checking the Current Version

Chapter 7. ESP-IDF Versions
The ESP-IDF Programming Guide has information about the different versions of ESP-IDF (major, minor, bugfix,
etc).
7.5 Checking the Current Version
The local ESP-IDF version can be checked by using idf.py:
idf.py --version
The ESP-IDF version is also compiled into the firmware and can be accessed (as a string) via the macro IDF_VER.
The default ESP-IDF bootloader will print the version on boot (the version information is not always updated if
the code in the GitHub repo is updated, it only changes if there is a clean build or if that particular source file is
recompiled).
If writing code that needs to support multiple ESP-IDF versions, the version can be checked at compile time using
compile-time macros.
Examples of ESP-IDF versions:
Espressif Systems 1589
Submit Document Feedback
Release v4.4