USB virtualCOM with STM32F769 Discovery

Hi,

I am beginning with STM32 MCUs, more concretely with STM32F769NI. I have a STM32F769 Discovery board to make tests. My first attempt was to use the USB from the board to communicate with a PC.

Looking for info about USB OTG I came across the virtualCOM that enables USB to communicate as serial ports and the USB CDC Class Device that it is used for this task.

I have tried to follow the application example for de EVAL board called CDC_Standalone, that is inside the STM32cubeF7 but I am a bit lost. I am not sure whether this is the app I need to implement. I can't find any function to transmit or receive data to the virtualCOM.

Moreover, reading the board documentation it is said that the ST-LINK Embedded debugger can works as virtualCOM, so I don't understand whether  it is  possible to configure the USB OTG connection to work as virtualCOM also or you need to work with the ST-LINK directly (there are a USB connector for ST-LINK and other one for the USB OTG).

Anyon can help me with this topic?

Thanks in advanced,

Omar