usbus_minimal example

This is a minimalistic example for RIOT's USB stack. The application will initialize and start the USB stack. The stack is started without any USB handlers, it should show up as an empty USB device on the host.

RIOT doesn't own any USB vendor and product ID. To compile this example, add your own vendor and product ID to the makefile:

CFLAGS += -DCONFIG_USB_VID=0xYOURVID -DCONFIG_USB_PID=0xYOURPID

The example demonstrates basic USB communication between a host and a RIOT based USB peripheral. Tools such as lsusb should display the device and detailed information about the device such as descriptor strings.