USB in User Mode

USB in User Mode
LibUSB library is best option for developing a USB driver. It can work on both Windows and Linux machines. It can be downloaded from The full list of USB access functions offered by this library is available under the doc/ directory of LibUSB sources.

Architecture on Linux
The following is the detail design of using lib USB library with the user application on Linux machine.

Figure: Detail design of Lib USB with user mode application

Architecture on Windows Machine
Following is the architecture of using libusb on windows platform;

Figure: Detail design of LibUSB on Windows machine

The following code implements a user space code for detecting a USB device according to its class and getting its different manufacturing information from descriptors like device descriptors and interface descriptors.