嵌入式微处理器ARM7202触摸屏接口设计V2

Design on Interface of Touch Screen Based on ARM 7202

论文介绍了基于ARM7202(HMS30C7202)嵌入式系统触摸屏工作的基本原理及其硬件接口电路,研究了触摸屏驱动程序的工作机制,给出了其工作流程及其在实时操作系统uc/OS下的中断服务程序。满足了复杂的实时多任务环境中触摸屏快速响应的要求。

This paper introduced the basic principle and interface circuit of touch screen beased on embedded system ARM7202( HMS30C7202) . The mechanism of driver for touch screen was analyzed. The flow chart and interrupt server program in uc/OS were presented. The quick response to touch screen in real-time multitask was satisfied.