毕业设计（论文）-基于ARM USB控制的LED点阵设计.doc

基于ARM USB控制的LED点阵设计
摘要
随着信息产业的高速发展,LED显示屏作为信息传播的一种重要手段成为现代信息化社会的一个闪亮标志。近年LED显示屏已广泛应用于室内、外需要进行服务内容和服务宗旨宣传的公众场所如银行、营业部、车站、机场、港口、体育场馆等信息的发布,政府机关政策、政令,各类市场行情信息的发布和宣传等。目前,对于那些需要显示的信息量不是很大,分辨率不是很高,又要求制造成本相对比较低的场合,使用大、小屏幕LED点阵显示器是比较经济适用的,它可以用单片机控制实现显示字符、数字、汉字和简单图形,可以根据需要使用不同字号、字型。LED省电、寿命长、不需要高压条、屏幕进水不容易坏了,代表着新的技术和潮流。现有的LED点阵显示器在显示模式上主要是采用固定的方式显示固定的内容,灵活性比较差。
本文主要研究了LED点阵原理及应用、USB 、LED点阵显示器的显示模式多样化和显示内容人工可控的实现、MFC人机交互界面深入设计。通过设计点阵控制LED点阵显示器电路板和编写控制电路板驱动程序,完成显示模式的多样化和显示内容人工可控。同时设计加入了MFC界面,使控制更加简单明了。设计中,使用Altium Designer Summer 09软件对所涉及的电路进行电路板模拟实现,购买所设计的电路板和需要的各种芯片等器件。使用Keil uVision4进行芯片控制程序编写,最后通过JLINK下载器将上位机与下位机连接,并通过MFC界面进行显示模式控制,通过对Keil uVision4程序的修改完成显示内容的控制。
在本文的最后,总结了本文的工作,并提了今后课题的一些展望。
关键字 LED点阵 USB MFC
The Design of LED Lattice Baesd on The Control of ARM USB
ABSTRACT
With the rapid development of information industry, LED display as an important means is a shining mark of dissemination of information in modern information society. LED display has been widely used in recent years, both in indoor and outdoor services, to disseminate content and purpose of different kinds of services in public places such as banks, business department, railway stations, airports, ports, stadiums and other published information, government policies and decrees, and market information publicity in all kinds of market . At present, for those that need displaying where the amount of information is not large, the resolution needed is not very high, and relatively low manufacturing cost is required as well, the use of large and small screen, LED lattice display is more affordable, and it can plish displaying characters, numbers, characters and simple graphics in different sizes and styles fulfilling users' needs with the control of the SCM. LED contains many advantages, like energy saving, long life, no high-pressure section, the screen not easy to break down with water seeping in, which represens the new trends of technologies. The display mode of LED lattice nowad