Stm32 zephyr

STM32F091RC and Zephyr

Search for Zephyr start up and init code to support STM32F091RC based projects. Search for "zephyr stm32f091rc clock init" yields:

• https://docs.zephyrproject.org/latest/boards/st/nucleo_f091rc/doc/index.html

Above Zephyr doc page holds a lot of information about the on-chip and on-board peripherals of the Nucleo dev board for this MCU. There's also mention that usart2 on pins PA2 and PA3, and that this is also known as or possibly doubles as the "STLink Virtual Comm Port". Would this virtual comm port presence need accounting in setting up a custom board using STM32F091RC?

QUESTION: what are consequences if any of usart2 doubling as STLINK virtual comm port?

Some posts related to this question:

• https://community.st.com/t5/stm32-mcus-boards-and-hardware/virtual-com-port-in-stlink-doesn-t-work-while-debugger-attached/td-p/269594