I want to run USB speed test on i.MXRT 1020 - EVK.
I ran some MCUExpresso USB examples such as CDC vcom, HID generic, so PC will be host, and board will be device. I change the speed to configure USB to HIGH speed (480Mb/s) on source code. But I don't know how PC communicate with the board? What is the device type that board will be known by PC?
I assume PC recognize the board as com port, and has a device like /dev/ttyACM1, should I write a C program on PC to run speed test? anh how to wirte it?