ESP-IDF v5.1 - identifier "CONFIG_FREERTOS_HZ" is undefined

[username]

Just installed ESP-IDF v5.1.
Created a new project using the blink example, it compiles but shows red squiggles.

Screenshot 2023-07-04 013430.png (125.33 KiB) Viewed 10480 times

[LochWatenan]

Same for me here with the HelloWorld example; missing are here:
* CONFIG_IDF_TARGET
* CONFIG_FREERTOS_HZ

The issue seems to exist for quite some time, see here: https://www.reddit.com/r/esp32/comments ... _examples/ (4yr ago)

When trying to #define the missing identifiers (before #include) I get a warning of a redefinition (inside some sdk header files).

I am totally new to the ESP32 (IDF) world, so currently do not really understand what is going on. But it seems the missing values are defined in the sdkconfig(.h) or config.env files.

So, I do not have a solution, but can confirm the behaviour.

I am using the Espressif IDF release v5.1 on VS Code v1.79.2 on Windows 11.

[camztouch]

I have the same issue on idf 5.1 on Apple Silicon.
It still compiles, but feels wrong

[ESP_igrr]

Could you please check if you have compile_commands.json location correctly configured? See https://github.com/espressif/vscode-esp ... mmandsjson.

[jhlee1]

I'm using VSCode v1.82 and extension Espressif IDF v1.6.4 on Windows 10.

I have the same problem after installing idf v5.1. Even existing projects using idf v5.0 occur the same problem.

I tried adding "compileCommands": "${workspaceFolder}\\build\\compile_commands.json" to the configurations in the c_cpp_properties.json file, but it doesn't work for me.

[kmmaran]

I face the same issue and used the solution below and works for me. Please add

"${workspaceFolder}/build/config",

in the c_cpp_properties.json , see below

soultion.png (453.22 KiB) Viewed 9128 times

OR

from https://github.com/espressif/vscode-esp ... URATION.md
last section, please add
"compileCommands": "${workspaceFolder}/build/compile_commands.json"

solution.png (382.51 KiB) Viewed 9111 times

[Édipo Duanny]

@kmmaran,
In my case, the problem was solved. Thank you.

[Westfaliah]

@kmmaran, Thank you!

[MelbourneMick]

Thank you - it was driving me crazy!

[TUHHSTUDENT]

Thank you!