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S3C44B0X作为一款以ARM7TDMI为内核的微处理器,正日益受到广泛的应用;uClinux作为一种运行于没有MMU的嵌入式微处理器的嵌入式操作系统,也广泛应用到嵌入式开发中。本文对S3C44B0X+uClinux嵌入式系统中的触摸屏设计进行了探讨,给出S3C44B0X上触摸屏的实现硬件设计原理及结构,并针对uClinux触摸屏驱动程序设计中存在的难点提出了解决方案。
As an ARM7TDMI-based microprocessor, S3C44B0X is gaining popularity. UClinux is widely used in embedded development as an embedded operating system running on embedded microprocessors without MMU. This article discusses the design of touch screen in S3C44B0X + uClinux embedded system, gives the hardware design principle and structure of the touch screen in S3C44B0X, and puts forward the solutions to the difficulties in the design of uClinux touch screen driver.