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
Are you using the 200 bytes char inside a function!? The local variables of the functions are being allocated on the stack, so maybe your stack size isn’t big enough to hold that much data. You can increase your stack size by editing the linker script, but anyway it isn’t a great idea to use 200 bytes buffer on the stack. Just use a global variable.