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本文基于Linux 2.4.19平台以及新型的移动终端应用处理器Unity805plus,给出一种运用UCB1400芯片中触摸屏控制器模块实现触摸屏驱动的方案。分别从硬件,软件的角度阐述了触摸屏驱动的初始化设置、中断以及后台进程、信号量在笔点击事件处理流程中的应用。
This article is based on the Linux 2.4.19 platform and a new type of mobile terminal application processor Unity805plus, gives a program using touch screen controller module UCB1400 chip touch screen driver. From the hardware and software point of view, the initialization settings, interrupts and background processes of the touch screen driver are described respectively. The application of semaphore in the pen-click event processing flow is described.