OS Abstraction Layer for the Reuse of USB Stack and Device Drivers

In the interest of an easy but effective USB reusable component, the USB abstraction layer is brought forward based on the analysis of USB framework and implement in variety of OS. With this USB special layer, the portability of USB stack and USB device drivers will be achieved with unified API independent of the platforms. The experimental results show that this approach has good capacity for the efforts reducing and quality enhancing, etc. in USB software development.