Is there a good USB CDC device only example application code for MQX4.1? Hopefully better than the one at usb\device\examples\cdc\virtual_com. In addition, I only see IAR build folder like cdc_vcom_twrk21d50m\. What I am working on is k20d50m. Does the difference matter?
I need it as a start point to implement a simple USB CDC device application on MK20DX128VFM5.