Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
Install host dependencies.
Import toolchain and SDK.
Create, configure, build and manage apps.
Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench
Right click on the project in the explorer window and select “Index->Rebuild” and see if that helps.
Sometimes, the code is fine but the pre-compiled headers in the Eclipse IDE are out of date.