Cube CMake: Unexpected end of JSON input

andreasp00 · ‎2026-01-23

Hello!

I'm trying out the new STM32CubeIDE extensions for VSCode and have generated a CMake project using CubeMX. I'm unable to setup my project as I get this error:

I don't know what JSON file it is referring to as there are none in my project except the auto-generated CMakePresets.json, but I don't think that's the issue since I get the same error even if I remove that file.

I have tried to re-install the extensions and restart VSCode with no luck.

Julien D · ‎2026-01-23

Hi @andreasp00,

Can you share the CubeMX version and the device/board you are using for this project ?

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andreasp00 · ‎2026-01-23

I'm using a fresh installation of CubeMX 6.16.1.

The project is for a custom board using a STM32L476MGY6TR.

Julien D · ‎2026-01-23

Unfortunately, I cannot reproduce the issue.

Could you please open the Developer Tools window (Help > Toggle Developer Tools), switch to the Console tab, and record any errors shown when running your scenario?

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