arm芯片控制led显示屏.doc

.. ... 基于 ARM 的 LED 显示屏的控制系统的设计与实现摘要近年来, LED(light emiting diode ,发光二极管)显示屏作为一种高科技产品日益引起人们的重视。它可以实时显示或循环播放文字、图形和图像信息,具有显示方式丰富、观赏性强、显示内容修改方便、亮度高、显示稳定且寿命长等多种优点,被广泛应用于商业广告、体育比赛、 显示屏的核心技术主要集中在控制器中。目前,大部分异步显示屏采用的是 8位或 16位的微控制器,由于受到微处理器的处理速度、体系架构、寻址范围、外围接口资源等诸多限制,已难以在要求显示较多像素、显示内容帧频较高、动态显示效果复杂的情况下得到良好的动态视觉效果。针对以上情况,本文研究开发了一种全新的,由32位高性能 ARM 微处理器组成的 LED 显示屏控制系统,就控制平台、硬件结构和软件开发实现给出了驱动部分和控制部分的详细分析与设计。关键词: LED 显示屏,控制系统, ARM , LPC2294 芯片,串口通信, RS232 接口.. ... The LED display control system design and implementation based on ARM A bstract LED panel systems gains rapid development in the design,machine and application from ies went thorugh from single color and two colors to image LED a high technology production,LED panel can realize real time and sequential displaying textuer,graghic and images. LED panel has many special feature such as high reliability, long life,high performance, low cost, and more important high acclimatization. Moreover, with the technique of color panel perfect increasingly,LED panel is widely used in many fields. The coer techniqe for a LED panel is mainly centralized on its present,the majority of asynchronous display panel use the 8or the 16 micro-controllers,because the processing speed, the system construction, the addressing scope, the periphery connection resources and soon many limits, in request demonstration many picture elements, the demonstration content frame frequency has been with dificulty high, in the dynamic demonstration plex situation, obtains the good dynamic visual efect. In view of above situation,This paper redesign and developed one kind new display posed by32 high performance ARM control platform,hardware structuer and softwaer implementation of the LED panel controller are analyzed and designed Key Words : LED panel systems , control system, ARM, LPC2294 micro-controllers, munication, RS232 serial interface .. ... 目录 ...................................