本文關(guān)鍵詞： ARM處理器 CPLD LED顯示系統(tǒng) USB 文件系統(tǒng)　出處：《南京航空航天大學(xué)》2009年碩士論文　論文類型：學(xué)位論文

【摘要】： 隨著信息時(shí)代高新技術(shù)的飛速發(fā)展,人們對(duì)及時(shí)獲取并顯示各類信息的愿望日益強(qiáng)烈,由此帶動(dòng)了信息傳媒的飛速發(fā)展,LED顯示屏就是信息顯示的重要傳媒之一。LED顯示屏是利用發(fā)光二極管點(diǎn)陣模塊或像素單元組成的大面積顯示屏幕,廣泛應(yīng)用于金融市場(chǎng)、醫(yī)院、體育場(chǎng)館、機(jī)場(chǎng)、碼頭、車站、高速公路等公共場(chǎng)所的信息顯示和廣告宣傳。 本課題采用基于ARM核的新一代32位嵌入式RISC微處理器組成前級(jí)驅(qū)動(dòng)電路,結(jié)合CPLD作為協(xié)處理器,PC機(jī)用于后級(jí)管理和控制,并成功地將USB通信加入硬件平臺(tái)中,成為本課題重要特色部分,為L(zhǎng)ED顯示屏未來的發(fā)展提供了良好的前景。本文主要完成以下工作: (1)深入了解大屏幕LED顯示系統(tǒng)的結(jié)構(gòu)和工作原理,分析傳統(tǒng)LED顯示控制器系統(tǒng)的主要不足,提出了本文關(guān)于LED顯示系統(tǒng)設(shè)計(jì)的總體方案。 (2)設(shè)計(jì)完成了基于ARM和CPLD的大屏幕LED顯示系統(tǒng)的總體設(shè)計(jì)平臺(tái),分析了芯片的結(jié)構(gòu)和使用方法,完成了該系統(tǒng)的原理圖和PCB電路板的設(shè)計(jì),實(shí)現(xiàn)了硬件電路板的制作與調(diào)試。 (3)重點(diǎn)研究了USB大容量存儲(chǔ)設(shè)備類規(guī)范和FAT32文件系統(tǒng),分析了USB1.1協(xié)議,成功開發(fā)了主控制器驅(qū)動(dòng)程序和USB核心驅(qū)動(dòng)程序,使得基于USB通訊的大屏幕LED顯示系統(tǒng)具有更好的實(shí)際應(yīng)用價(jià)值。 (4)開發(fā)了基于ARM硬件平臺(tái)的大屏幕LED顯示系統(tǒng)的應(yīng)用軟件,主要包括通信模塊、控制模塊、顯示模塊以實(shí)現(xiàn)LED顯示屏的圖文顯示,其中基于ARM微處理器控制系統(tǒng)的程序采用ARM匯編語言和C語言編寫,在PC機(jī)上使用C++Builder開發(fā)環(huán)境進(jìn)行了串口通信程序的設(shè)計(jì),并通過PCOMM組件來實(shí)現(xiàn)數(shù)據(jù)傳輸。
[Abstract]:With the rapid development of high and new technology in the information age, people's desire to obtain and display all kinds of information in time is increasingly strong, which has led to the rapid development of information media. LED display screen is one of the important media of information display. Led display screen is a large area display screen composed of light-emitting diode lattice module or pixel unit, which is widely used in financial market and hospital. Information display and advertising in public places such as stadiums, airports, docks, stations, highways, etc. In this paper, a new generation of 32-bit embedded RISC microprocessor based on ARM core is used to make up the front-stage driving circuit, and CPLD is used as the coprocessor for the management and control of the back stage. USB communication has been successfully added to the hardware platform, which has become an important feature part of this topic, which provides a good prospect for the future development of LED display screen. The main work of this paper is as follows: 1) deeply understand the structure and working principle of the large-screen LED display system, analyze the main shortcomings of the traditional LED display controller system, and put forward the overall scheme of the design of the LED display system in this paper. The overall design platform of the large screen LED display system based on ARM and CPLD is designed. The structure and usage of the chip are analyzed. The schematic diagram of the system and the design of the PCB circuit board are completed, and the hardware circuit board is made and debugged. In this paper, the class specification of USB mass storage device and FAT32 file system are studied, the USB1.1 protocol is analyzed, and the main controller driver and USB core driver are developed successfully. The large screen LED display system based on USB communication has better practical application value. The application software of large screen LED display system based on ARM hardware platform is developed, which mainly includes communication module, control module and display module to realize the graphic and text display of LED display screen. The program based on ARM microprocessor control system is written in ARM assembly language and C language, and the serial communication program is designed by using C Builder development environment on PC. And through the PCOMM component to achieve data transmission.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2009
【分類號(hào)】：TN873

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