嵌入式触摸屏在汽车实验记录仪中的应用  

Embedded touch-screen Applied in the Vehicle Experiment Data Recorder

作　　者：叶小岭[1] 严海东[1] 

机构地区：[1]南京信息工程大学信息与控制学院,江苏南京210044

出　　处：《计算机测量与控制》2009年第3期573-575,共3页Computer Measurement &Control

基　　金：江苏省高校自然科学基金资助项目(06KJD520122)

摘　　要：如今流行的汽车实验记录仪多为键盘控制,通过对基于S3C2410芯片的触摸屏应用于汽车实验记录仪的研究,阐述了触摸屏的工作原理、硬件电路结构和相关的驱动程序;为了与其他的处理器兼容,没有采用S3C2410芯片内部的A/D通道,而是采用外扩控制器ADS7846的方式,同时介绍了触摸屏接口芯片ADS7846的功能和使用方法,并对一些源代码进行了分析,数据之间通过SPI总线进行通信,电路结构简单;该触摸屏应用于汽车实验记录仪中,具有良好的人机界面、直观的操作、精度高的优点。Nowadays, the vehicle experiment data recorder mostly is controlled by keyboard. This paper mainly introduced and discussed the touch screen based on chip S3C2410 applied to the vehicle experiment data recorder, including its principium, structure hardware and driver procedures flow. In order to compatible with other processors, the research do not use the A/D channel within the S3C2410. but use the controller ADS7846 by the extended way. The function and implementation of touch screen interface chip ADS7846 are introduced, then with reading some source code. This touch screen applied to vehicle experiment data recorder have a good man--machine interface, simple operation and the advantage of high--precision.

关 键 词：触摸屏 S3C2410 ADS7846 驱动程序 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]