Sending and receiving data over USB port

Question

I\'d like to send/receive data over a USB port to a device (from my vista pc). Is there a free/cheap library out there that can do this, and how involved would this project

Answer 1

Without knowing anything else about your situation, and assuming you are in control of the device's USB protocol and drivers, I would recommend using WinUSB.

It is a lot better than libusb-win32 because it is a native part of Windows and it supports asynchronous communication. Also, libusb-win32 only supports the libusb-0.1 API, which is really old.