Research Of GPRS CF Card's Driver And Implementation In Linux

With the emergence of all kinds of new technique, people's cognitions of computer become more and more deep. The calculation is walking into the equipments gradually, and the computer system also change into the tangible from the every kind of immaterial facies. From the aviation and navigarion region to the PDA on our hands are all transplant into the computer system, we called this kind of system as embedded system, it is an efficiecy, little occupancy and cheap system. Linux system is not only inherit the traditional Linux, such as the easy to development, efficiently, the function is strong and big, stable, free, and open source, etc, but also did many embedded alteration to make it adapt to the need of the application in embedded system better.Every characteristics of the embedded device limit that its driver must tailor, and with the embedded system and application program full binded into a whole portion. So different embedded products must design their own drivers. Although, many embedded operating system provided driver's example. But when we run the driver, we must do some modifications, even redesign, according to the hardware's speciality.In my thesis, my major job is do some research and practice in Linux device driver's design and development. After analyse the characteristic of GPRS CF card, then I do my layered design: tty layer, serial layer and GPRS layer. This driver is aim to the CF interface. And I solve some problem, such as copetition, dead lock and limited buffer. At the same time, GPRS function implement on Linux also an important portion in my thesis.