I'm using STM32 VCP firmware on STM32F4 discovery. I generated the code with CubeMX and I could successfully integrate it into my Eclipse project. After calling the initialisation functions, the device appears on my PC as virtual com port, so the drivers are fine.
But where can I find the functions in the library, which do the trasmitting and receiving data on the STM32 device? I know this is a very basic question, but I'm looking for them for a long time.