USB driver on µclinux to communucation with PC with USB

If a gadget serial (tty) solution will solve your porblem (Im not sure I understand exactly what your're trying to do), then Michael is correct in approach. However, in my experience, the gadget serial interface has not worked well and usually not at all, since the old Microtronix distribution. It is also worth mentioning that we believe all of the currently supported USB chips (nios linux dist) are on a "last time buy" status. We have recently migrated all of our designs to a Host/device (IP) pair from SLS and are using there drivers, including dadget_serial. All work well in the nios environment. I am aware that there has been some recent work on the USB drivers (isp116X, and 136X) if the device side is now working with these, then I apologize in advance. But please note that these chips are among the group that we've been told are going away.