基于S3C2410的触摸屏应用功能开发

Application and development of touch screen panel based on S3C2410

触摸屏作为人机界面的输入设备被广泛地应用于消费电子、工业控制等诸多领域。目前流行的嵌入式ARM处理器S3C2410是一款典型的嵌入式SoC芯片,它提供了触摸屏控制器接口,方便了嵌入式软、硬件开发。简要介绍了S3C2410微处理器,分析了触摸屏硬件工作基本原理,给出了触摸屏与S3C2410的接口原理电路与实际电路原理图。编程实现了触摸屏应用功能开发,当点击触摸屏上某一点时,LCD会显示用户点击坐标。最后给出了触摸屏坐标定位程序。实验结果表明,触摸屏工作良好。

As a friendly input device of man-machine interface, the touch screen panel is popularly used in the area of consumption electron and industry control. The popular embedded processor S3C2410 is a typical SoC chip with touch screen panel controller, which made it easier to develop hardware and software. This paper introduces the microprocessor S3C2410 briefly, analyzes working mechanism of the module TSP （touch screen panel）, and then presents the interface principle chart and the circuit chart. The development of application function is realized through programming. When one point was clicked, LCD will display the user＇s clicking coordinate. Coordinate locating programme is also given. The experiment result shows that the TSP works in good condition.