基于ARM的嵌入式触摸屏控制系统设计

论文编号:ZD928    论文字数:14770,页数:47

摘  要
 由于便携设备触摸屏简单易行、应用接口直观、轻便、占用空间少，方便灵活等优点，已经逐渐取代键盘而成为嵌入式计算机系统的输入设备。同时手写触摸屏技术有天然的优势，非常直观的操作方式，基本是直觉式，想调什么直接点击就可以了，使用便利，同时也可以有效减小产品体积，节省空间，这种操作方式一定是未来的手持数码产品的发展趋势。同时嵌入式触摸屏技术被认为是未来人机交互科技的主流方向之一，相关的产业及其产品的应用也正成为一个热点。嵌入式触摸屏在我国的应用范围非常广阔，主要有公共信息的查询和城市街头的信息查询。而且ARM芯片能得到如此广泛的应用，是其体系结构很适合嵌入式领域。ARM是最成功也是第一个商业化的RISC实例。基于RISC体系结构设计的处理器管芯面积小，开发时间短,开发成本低，容易实现高性能。
 因此毕业设计题目是基于ARM的嵌入式触摸屏控制系统设计，主要实现触摸屏的输入功能。

关键词：触摸屏   ARM

Abstract
 Touch-screen portable devices as a result of simple, intuitive interface, lightweight, small footprint, convenient and flexible, etc., have been gradually replacing the keyboard to become embedded computer system input device.At the same time, handwriting touch screen technology has the advantages of natural and very intuitive operation, the basic is intuitive, what would like to stress that you can click on, and ease of use, but also can effectively reduce the product size, save space, this operation must be handheld digital future trends in product development. At the same time, embedded touch-screen technology is considered to be the futur of human-computer interaction technology, one of the mainstream, industry-related applications and products is becoming a hot spot. Embedded touch screen in our very broad range of applications, there are public information inquiries and information of city streets. And ARM chips can be such a wide range of applications, its architecture is very suitable for embedded. ARM is the most successful is the first commercial examples of RISC. RISC-based processor architecture designed die size, short development time, development of low cost, easy to achieve high performance.     Graduation Project is therefore the subject of the embedded ARM-based touch-screen control system design, the main function of touch screen input.
 
Keywords：Touch Screen  ARM

目 录
摘要……………………………………………………………………………. . .……………..Ⅰ
1 前言…………………………………………………………………………………………….1
2 总体设计方案……………………………………………………………………………. . ..2
2.1  系统总体结构…………………………………………………………………….……..2
2.2  系统总体软件流程……………………………………………………………. . .……..3
2.3  系统软件分析……………………………………………………………. . .…………..4
3  ARM7 LPC2290 系统…………………………………………………………... ……...13
 3.1  LPC2290系统硬件概况………………………………………………………………13
  3.1.1  核心区域和外围模块区域……………………………………………………..13
  3.1.2  存储器和堆栈…………………………………………………………………..14
 3.2  GPIO………………………………………………………………………………… ..17
 3.3  A/D转化器……………………………………………………………………………18
4  触摸屏……………………………………………………………………………………….20
 4.1  触摸屏介绍…………………………………………………………………………….20
5  液晶显示……………………………………………………. . .…………………………...27
 5.1  液晶显示器分类………………………………………………………………………27
 5.2  液晶显示器原理………………………………………………………………………27
5.3  液晶显示器技术参数…………………………………………………………………28
6  系统软件的调试…………………………………………………………………………...30
7  总结…………………………………………………………………………………………..31
致谢………………………………………………………………………………………….........32
参考文献………………………………………………………………………………………...33
附录1 系统原理图 ………………………………………………………………………….34
附录2 系统程序 ……………………………………………………………………………..36