The Study On The Developmeng Of Embedded Driver Based On S3C2440

With the development of the information technology and popularization of digital products, the embedded system has been widely used with the computer technology, chip technology and software technology as the core. However, with the spreading and development of embedded equipment, it gets more powerful and requires various external equipments. There occur the problems such as identity and driving of the external equipments. It is necessary to have the matched driving program in developing the embedded product for the types and features of the embedded system, so how to explore the matched driving program for special equipment is the core of the research paper.Linux system becomes rapidly the main exploration for embedded equipment due to the features of being easily explored, powerful functions, stability, being cuttable and low cost. The driver of external equipment equipped with Linux system can be divided into character equipment driver, bulk equipment driver and network equipment driver. It mainly introduces the hardware structure in development board of S3C2440 in this paper and analyzes the design of hard ware related to the driver, studies the compiling and transplanting of bootloader and general tactics and methods of developing the driver of character equipment and bulk equipment. It studies the development and portof the drivers for SD card of bulk equipment and USB keyboard of character equipment respectively based on the development board of S3C2440.