發(fā)布時間：2018-04-17 15:22

  本文選題：嵌入式系統(tǒng) + Linux��； 參考：《大連海事大學(xué)》2012年碩士論文

【摘要】：嵌入式系統(tǒng)的概念在20世紀(jì)70年代就開始出現(xiàn),但是直到最近十幾年,隨著半導(dǎo)體技術(shù)、微電子技術(shù)和信息技術(shù)取得突飛猛進(jìn)的發(fā)展,嵌入式系統(tǒng)開始得到廣泛的應(yīng)用。與桌面計算機(jī)不同,嵌入式系統(tǒng)針對特定需求進(jìn)行專門設(shè)計,一般具有低成本、低功耗、小體積、高性能、高可靠性和軟硬件可配置的特點。 隨著技術(shù)的發(fā)展和需求的擴(kuò)大,傳統(tǒng)的10英寸以下的嵌入式顯示器嚴(yán)重限制嵌入式發(fā)展,而當(dāng)今嵌入式系統(tǒng)接口標(biāo)準(zhǔn)不統(tǒng)一,給系統(tǒng)維護(hù)和顯示器升級帶來很大難度。VGA顯示接口標(biāo)準(zhǔn)統(tǒng)一,市場覆蓋廣,技術(shù)成熟,目前使用非常廣泛。以Linux為代表的嵌入式操作系統(tǒng),將由窗口、菜單組成的可視化圖形顯示界面帶入了嵌入式開發(fā)領(lǐng)域,代替了專業(yè)的命令語言,促進(jìn)嵌入式系統(tǒng)在企業(yè)專用解決方案、工業(yè)控制和消費類產(chǎn)品等方面的更廣泛應(yīng)用。在嵌入式和Internet結(jié)合的時代,研究設(shè)計基于ARM構(gòu)架的嵌入式Linux系統(tǒng)的VGA接口有助于嵌入式系統(tǒng)更好地實現(xiàn)人機(jī)交互,使其能在工業(yè)和生活等諸多領(lǐng)域中得到更廣泛和深入應(yīng)用。 本文針對嵌入式系統(tǒng)和VGA接口的特點,將二者結(jié)合研究,實現(xiàn)了嵌入式Linux系統(tǒng)的VGA接口設(shè)計,具體過程如下： (1)基于S3C2440微處理器和ARMSYS2440嵌入式開發(fā)系統(tǒng)的特點,對Linux操作系統(tǒng)內(nèi)核的裁剪,并移植系統(tǒng)到ARMSYS2440開發(fā)板中。 (2)詳細(xì)分析VGA顯示標(biāo)準(zhǔn)和嵌入式系統(tǒng)的LCD控制器工作原理,根據(jù)VGA采用模擬信號代替數(shù)字信號顯示的特點,進(jìn)行以ADV7123為核心的D/A轉(zhuǎn)換電路模塊的設(shè)計。 (3)結(jié)合VGA接口顯示時序,應(yīng)用C語言編程,對Linux操作系統(tǒng)內(nèi)核的基于幀緩沖架構(gòu)的顯示驅(qū)動進(jìn)行分析和修改,使其顯示數(shù)據(jù)輸出適合D/A轉(zhuǎn)換,顯示時序輸出適合VGA顯示時序。 本研究內(nèi)容是導(dǎo)航研究所承擔(dān)的國家支撐計劃課題"AIS/GNSS船載導(dǎo)航設(shè)備關(guān)鍵技術(shù)與系統(tǒng)研制”(2012BAH36B02)的部分內(nèi)容,研究成果在設(shè)備的顯示系統(tǒng)中得到了應(yīng)用。
[Abstract]:The concept of embedded system began to appear in 1970s. However, with the rapid development of semiconductor technology, microelectronics technology and information technology, embedded system began to be widely used.Unlike desktop computers, embedded systems are specially designed for specific needs, generally with the characteristics of low cost, low power consumption, small volume, high performance, high reliability and configurable software and hardware.With the development of technology and the expansion of demand, the traditional embedded display with less than 10 inches restricts the development of embedded system seriously, but the standard of embedded system interface is not unified.It brings great difficulty to system maintenance and display upgrade. VGA display interface standard is unified, market coverage is wide, technology is mature, and it is widely used at present.The embedded operating system represented by Linux brings the visual graphical display interface composed of windows and menus into the field of embedded development, replaces the professional command language, and promotes the special solution of embedded system in enterprise.Industrial control and consumer products are more widely used.In the era of the combination of embedded system and Internet, the research and design of the VGA interface of embedded Linux system based on ARM framework is helpful for the embedded system to achieve better man-machine interaction and make it more widely and deeply applied in many fields such as industry and life.According to the characteristics of embedded system and VGA interface, this paper combines the two research, realizes the design of VGA interface of embedded Linux system, the concrete process is as follows:Based on the characteristics of S3C2440 microprocessor and ARMSYS2440 embedded development system, the kernel of Linux operating system is cut, and the system is transplanted to ARMSYS2440 development board.2) the VGA display standard and the working principle of LCD controller in embedded system are analyzed in detail. According to the characteristic that analog signal is used to replace digital signal display in VGA, the design of D / A conversion circuit module with ADV7123 as the core is carried out.Combined with VGA interface display timing and C language programming, the display driver based on frame buffer architecture of Linux operating system kernel is analyzed and modified, so that the display data output is suitable for D / A conversion, and the display timing output is suitable for VGA display timing.This research content is part of the national support plan project "key technology and system development of AIS/GNSS shipborne navigation equipment", and the research results have been applied in the display system of the equipment.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP368.1;TP334.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王金宇;;嵌入式系統(tǒng)及其發(fā)展趨勢研究[J];電腦知識與技術(shù);2010年05期

2 鄭佃好;張紅雨;張洪斌;;基于ADV7125的嵌入式系統(tǒng)VGA接口設(shè)計[J];單片機(jī)與嵌入式系統(tǒng)應(yīng)用;2011年08期

3 黃錫珉;顯示技術(shù)的發(fā)展[J];電子產(chǎn)品世界;2002年13期

4 劉達(dá) ,余兆明;21世紀(jì)的主流顯示技術(shù)發(fā)展綜述[J];電子世界;2003年06期

5 饒淑珍;趙修慶;;Windows7中基于Vmware的虛擬組網(wǎng)[J];福建電腦;2010年02期

6 何健;;解析顯示器的CRT技術(shù)[J];黑龍江科技信息;2007年13期

7 鄭巧;;嵌入式系統(tǒng)的應(yīng)用與開發(fā)分析[J];制造業(yè)自動化;2011年05期

8 韋照川;李德明;;嵌入式系統(tǒng)發(fā)展概述[J];科技信息;2010年01期

9 趙潔;龔?fù)?;嵌入式Linux幀緩沖設(shè)備驅(qū)動程序[J];計算機(jī)系統(tǒng)應(yīng)用;2010年12期

10 符秋麗;;嵌入式系統(tǒng)概述[J];科技創(chuàng)新導(dǎo)報;2010年08期

相關(guān)碩士學(xué)位論文 前5條

1 彭飛;拼接式等離子顯示器VGA接口電路與驅(qū)動控制電路的研究與實現(xiàn)[D];浙江大學(xué);2006年

2 朱園;嵌入式Linux設(shè)備驅(qū)動的研究與開發(fā)[D];北京郵電大學(xué);2008年

3 何昕;嵌入式MINIX操作系統(tǒng)內(nèi)存管理的設(shè)計[D];蘭州大學(xué);2008年

4 劉世旺;嵌入式高分辨率VGA顯示系統(tǒng)的研究[D];天津大學(xué);2007年

5 趙天虹;分布式VGA顯示技術(shù)[D];天津大學(xué);2008年

，

本文編號：1764153