【正文】 摘 要隨著通訊技術(shù)、網(wǎng)絡(luò)技術(shù)和半導(dǎo)體技術(shù)的飛速發(fā)展，嵌入式系統(tǒng)接入網(wǎng)絡(luò)已成為其應(yīng)用的一個(gè)重要方向。越來(lái)越多的嵌入式系統(tǒng)選擇Web 服務(wù)器的方式與Inter 進(jìn)行數(shù)據(jù)交換。而以太網(wǎng)是構(gòu)筑現(xiàn)代Inter 網(wǎng)絡(luò)的基礎(chǔ)，因此選擇基于以太網(wǎng)的嵌入式Web 服務(wù)器技術(shù)實(shí)現(xiàn)數(shù)據(jù)交換將具有較高的實(shí)用價(jià)值。溫度是程控機(jī)房、檔案室、圖書館、農(nóng)業(yè)生產(chǎn)基地等眾多場(chǎng)所需要實(shí)時(shí)監(jiān)控的一個(gè)重要物理量。溫度監(jiān)控系統(tǒng)在實(shí)際生活中有著重要的作用。本文主要針對(duì)ARM7TDMI核的微處理器芯片，結(jié)合嵌入式Web 服務(wù)器技術(shù)，提出了基于以太網(wǎng)的遠(yuǎn)程溫度監(jiān)控系統(tǒng)的設(shè)計(jì)方案。該方案成功的實(shí)現(xiàn)了溫度采集和控制的網(wǎng)絡(luò)化。本設(shè)計(jì)采用的是豐寶公司的 LINPOPS LPC_2478 實(shí)驗(yàn)板，進(jìn)行遠(yuǎn)程溫度監(jiān)控系統(tǒng)研究，該板采用了恩智浦公司基于 ARM7TDMIS 內(nèi)核、單電源供電、LQFP208 封裝的LPC2478，具有 JTAG 仿真調(diào)試，ISP 編程等功能。uClinux 是應(yīng)用于微控制領(lǐng)域的一種嵌入式 Linux 操作系統(tǒng)，它源碼開放，移植性好，支持多種硬件平臺(tái)和幾乎所有常見(jiàn)網(wǎng)絡(luò)通信協(xié)議，支持文件系統(tǒng)豐富，是一個(gè)功能完整的嵌入式操作系統(tǒng)。并且有大量?jī)?yōu)秀的開放源代碼的應(yīng)用軟件和開發(fā)工具可用，因此，采用 μClinux 作為操作平臺(tái)，使用 Web 技術(shù)進(jìn)行遠(yuǎn)程在線監(jiān)測(cè)系統(tǒng)的開發(fā)。Boa 是一個(gè)高性能的單任務(wù)型 Web 服務(wù)器，可以運(yùn)行在幾乎所有的類 Unix 的平臺(tái)上，Boa 支持認(rèn)證，支持 CGI，功能比較全，占用資源也少，非常適合于用在資源有限的嵌入式系統(tǒng)中，目前 Boa 已經(jīng)以源碼的形式包含在 uClinux 的發(fā)行包中。所以本設(shè)計(jì)采用 uClinux 和 boa 服務(wù)器可以較好的滿足本次設(shè)計(jì)要求。關(guān)鍵詞：遠(yuǎn)程溫度系統(tǒng)；AMR7；LPC2478 ；uboot；uClinux；nand flash；nor flash；dp83848 ；ds18b20；cgi；boa ；web； AbstractAlong with munications technology, working technology and the technology embedded systems developing rapidly and access work has bee an important direction of its application. more and more options embedded systems and inter web server exchange data.. And ether is construct a modern inter work infrastructure and therefore opt for ether technology embedded web server for data interchange will be the practical value of the room. the temperature is controlled, and the archives, libraries, agricultural production base in many places such as realtime monitoring require a major physical quantities. the temperature control system in practical life is an important role. This article mainly aimed at the microprocessor chips arm7tdmi, the technology embedded web server, based on the temperature of the ether remote control system design scheme. This scheme successful to the collection and control of the work.The design is based on the Fengbao Electronic Technology (Shanghai) Co., Ltd LINPOPS LPC_2478 board to carry out the analysis on meter reading system, the board is integrated with NXP ARM7TDMIS kernel, Single power supply, LQFP208 enclosed LPC2478, JTAG simulated debugging and ISP programming functions, etc.. This design adopts uclinux and the boa server can better meet the requirements. uClinux is applied to a control an embedded linux operating system of its open source and transplant well, and support multiple hardware platforms and almost all mon munication protocols work, supported file system, is a function of embedded system. and there is a good open source software application and development of tools available, and therefore, adopt μ clinux as operating platform, the use of remote web technology in the monitoring system development.Boa is a performance of the task type of web server and run on almost all the kind of unix platforms, boa support and support, and the cgi be holding resources are few and are suitable for use in the limited resources of embedded systems, and the boa has been a source of the forms contained in the issue of uClinux package. So this design adopts uclinux and the boa server can better meet the requirements.Key words: remote temperature measurement and control system。 ARM7。LPC2478。uboot。uClinux。nand flash。norflash。dp83848。ds18b20。cgi。boa。web。目 錄引言 .......................................................................................................................51 項(xiàng)目設(shè)計(jì)方案 .................................................................................................62 開發(fā)環(huán)境介紹 .................................................................................................7 LINPOPS LPC_2478 介紹 .............................................................................................7 NORFLASH 介紹 ...........................................................................................................7 AM29LV160DB 簡(jiǎn)介 .............................................................................................8 AM29LV160DB 的操作命令字 .............................................................................8 Nor flash 的映射 ......................................................................................................8 NAND FLASH 介 紹 ..........................................................................................................9 Nand flash 芯片工作原理 .......................................................................................9 Nand flash 主要內(nèi)設(shè)命令詳細(xì)介紹 .....................................................................10 以 太 網(wǎng) 接 口 介 紹 .........................................................................................................11 以太網(wǎng)模塊特點(diǎn)....................................................................................................11 以太網(wǎng)模塊初始化................................................................................................12 軟件開發(fā)環(huán)境的介紹 ...................................................................................................133 UBOOT 的移植 ...........................................................................................14 UBOOT 簡(jiǎn)介 .................................................................................................................14 LPC2468OEM_Board 中幾個(gè)重要的文件...........................................................16 UBoot 的啟動(dòng)流程...............................................................................................17 UBOOT的配置和編譯 ....................................................................................................19 UBOOT的移植 ................................................................................................................19 UBOOT NOR FLASH 驅(qū)動(dòng)的移植 ..................................................................................21 NAND FLASH 驅(qū)動(dòng)移植 ...............................................................................................23 UBOOT 網(wǎng)卡驅(qū)動(dòng)移植 .................................................................................................26