I want to know where the definition is

Hello.

If you build with STM32CubeIDE the one exported from Mbed compiler

I get an error that MBED_CONF_PLATFORM_DEFAULT_SERIAL_BAUD_RATE and other definitions could not be found.

Where do these definitions look?

Thank you.

Hi there,

I do not have experince with that but you probably need found/create a mbed_config.h file.
Maybe this will help you.

BR, Jan

Thank you for your reply.

Is there any place defined outside of mbed_config.h?

Probably not, I not found another place in a local project or on github MbedOS project .