Linux下基于设备代理的SPI驱动的研究与应用

oday there are more SPI devices on SPI bus. It becomes very important to solve the collision problem which comes with the share of SPI controller between several different SPI devices. At first, this paper describes the characteristics of SPI, and introduces the embedded microchip S3C2440A. Then this paper analyses the structure of the embedded Linux SPI driver using equipment agent technology and attests its advantage, at last gives the necessary points of a application which solves the collision problem.