【正文】 connection resources and so on many limits, in request demonstration many picture elements, the demonstration content frame frequency has been with dificulty high, in the dynamic demonstration efect plex situation, obtains the good dynamic visual efect. In view of above situation,This paper redesign and developed one kind new display is posed by 32 high performance ARM control platform,hardware structuer and softwaer implementation of the LED panel controller are analyzed and designedKey Words：LED panel systems，control system, ARM, LPC2294 microcontrollers, serial munication, RS232 serial interfaceIII / 47目 錄 ..........................................................................................................................................1 LED 顯示屏的研究現(xiàn)狀及發(fā)展趨勢(shì) ............................................................................1 LED 顯示屏控制系統(tǒng)的研究現(xiàn)狀與發(fā)展趨勢(shì) ...........................................................3 基于單片機(jī)的 LED 顯示屏控制系統(tǒng) ......................................................................3 基于 SOPC 的 LED 顯示屏控制系統(tǒng) ......................................................................4 本課題的研究背景及意義 ...............................................................................................5 本論文的主要內(nèi)容 ..........................................................................................................62 LED 顯示系統(tǒng)的基本原理 .................................................................................................7 LED 顯示屏 ....................................................................................................................7 LED 顯示屏的顯示原理 .........................................................................................7 LED 顯示屏的驅(qū)動(dòng)原理 .........................................................................................7 LED 顯示屏的優(yōu)點(diǎn) .................................................................................................8 基于 ARM 的控制板 ......................................................................................................9 串口通信協(xié)議 ...............................................................................................................11 ARM 的 LED 顯示屏控制系統(tǒng)的總體設(shè)計(jì) ..............................................................13 整體思路 .......................................................................................................................13 芯片選型： ...................................................................................................................14 ARM 控制模塊 ........................................................................................................14 串口通信模塊 ..........................................................................................................15 LED 顯示模塊 ..........................................................................................................17 電源模塊 ..................................................................................................................18 時(shí)鐘模塊 ..................................................................................................................19 原理簡(jiǎn)介 ........................................................................................................................20 ........................................................................................................................21 電源模塊的設(shè)計(jì) ............................................................................................................21IV / 47 ARM 控制模塊的設(shè)計(jì) .................................................................................................23 串口通信模塊的設(shè)計(jì) ...................................................................................................26 LED 顯示模塊 ..............................................................................................................275 系統(tǒng)的軟件設(shè)計(jì) .................................................................................................................28 ARM ADS 集成開發(fā)環(huán)境的介紹 ................................................................................28 軟件的控制流程分析 ...................................................................................................30 握手信號(hào)的流程與通信數(shù)據(jù)幀格式 .......................................................................30 通信實(shí)例分析 ..........................................................................................................32 ARM 主程序的設(shè)計(jì) .....................................................................................................33 主程序的簡(jiǎn)要分析 ..................................................................................................33 主程序流程圖 ..........................................................................................................33 中斷子程序的設(shè)計(jì) .......................................................................................................34 中斷子程序的簡(jiǎn)要分析 ..........................................................................................34 中斷子程序流程 ....................................................................................................35 LED 控制器的工作流程 ..............................................................................................37結(jié)論 ...........................................................................................................................................38致謝 ...........................................................................................................................................39參考文獻(xiàn) ...................................................................................................................................40附錄 A........................................................................................................................................421 / 47 LED 顯示屏的研究現(xiàn)狀及發(fā)展趨勢(shì)進(jìn)入新世紀(jì) LED 顯示屏的技術(shù)和產(chǎn)業(yè)都取得了長(zhǎng)足的發(fā)展，作為重要的現(xiàn)代信息發(fā)布媒體之一 LED 顯示屏在證券交易、金融、交通、體育、廣告等領(lǐng)域被廣泛地應(yīng)用。目前，大部分異步顯示屏采用的是8位或16位的微控制器，由于受到微處理器的處理速度、體系架構(gòu)