老外写的触摸屏驱动程序，使用的是常见的7843芯片，平台是VZ328,可移植到多种嵌入式系统中，非常具有参考价值。-foreigner to write on the touch screen drivers, it is common to use the chip in 7843, the platform is the VZ328, transplanted to a wide range of embedded systems,