The Study of Embedded Linux Device Driver Architecture

The method of programming device driver for Embedded Linux is summarized,introduces the principle and basic concept of device drivers on Linux,and gives the flow architecture of how to design Linux devices drivers.the software interface between the device driver and the kernel of Linux,some of functions are proposed, meanwhile,some functions programming with pseudo C language are provide.The core idea on the development of device drivers under embedded Linux is concluded.In the end,the development example about drive program of keyboard device is introduced.