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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。
Touch screen as a man-machine interface input device is widely used in consumer electronics, industrial control and many other areas. The popular embedded ARM processor S3C2410 is a typical embedded SoC chip, which provides a touch screen controller interface for easy embedded software and hardware development. Briefly introduced the S3C2410 microprocessor, analyzed the basic principle of touch screen hardware work, given the touch screen and S3C2410 interface principle circuit and the actual circuit schematic. Programming to achieve the touch screen application development, when you click on a point on the touch screen, the LCD will display the user click coordinates. Finally, the touch screen coordinate positioning program is given. The experimental results show that the touch screen works well.