【正文】 用研究 II Abstract With the development of science and technology, told people living continuously improve the level of information, a variety of new Inter technologies and electronic information technology to promote the tremendous progress of human civilization. With development of the electronic information technology, innovation, intelligence increase, from time to time we enjoy the science and technology in their lives to our convenience. In people39。s internal work, enabling the user to the home environment of intelligent wireless monitoring, remote query, centralized management and remote control. The article on the Intelligent Home Control Platform for the embedded controller and its peripheral circuits, as well as GPRS module introduced in detail. Meanwhile, the process of the system to send and receive SMS, GPRS work in Linux, under implementation, monitoring center realization of software made in detail. Intelligent control system by remote home can not only view realtime monitoring and user housing situation of various electrical appliances, but also through the Inter work or mobile phone anytime, anywhere under the control of the house needs a variety of electrical equipment. This not only eliminates the existing and potential security risks, but also reduce energy consumption, and the State to promote the construction of resourcesaving society correspond. Keybords: Electronic information technology； home contro； embedded； linux； GPRS III 目 錄 摘要 ............................................................................................................................................. I Abstract ...................................................................................................................................... II 1 緒論 ......................................................................................................................................... 1 智能家居控制系統(tǒng) ...................................................................................................... 1 智能家居控制系統(tǒng)研究現(xiàn)狀 ........................................................................... 1 智能家居控制系統(tǒng)的總體框架 ....................................................................... 2 系統(tǒng)可行性分析 ......................................................................................................... 3 系統(tǒng)目標(biāo) ........................................................................................................... 3 硬件可行性分析 ............................................................................................... 4 軟件可行性分析 ............................................................................................... 5 論文主要工作 .............................................................................................................. 6 2 智能家居軟件系統(tǒng)定制 ......................................................................................................... 8 嵌入式軟件開發(fā)的特點 .............................................................................................. 8 嵌入式系統(tǒng)的軟件要求 ................................................................................... 8 Linux 操作系統(tǒng)的選定 .................................................................................... 8 智能家居系統(tǒng)中 Bootloader 的移植 ....................................................................... 11 Bootloader 的基本概念 .................................................................................. 11 系統(tǒng) Bootloader 的執(zhí)行過程 ........................................................................ 13 Bootloader 的主要功能 .................................................................................. 13 內(nèi)核移植 ................................................................................................................... 14 Linux 內(nèi)核基礎(chǔ)知識 ...................................................................................... 14 什么是標(biāo)準(zhǔn)內(nèi)核 ............................................................................................ 15 Linux 內(nèi)核的選擇 .......................................................................................... 15 編譯嵌入式 Linux 內(nèi)核 ................................................................................ 15 文件系統(tǒng)的移植 ....................................................................................................... 16 什么是文件系統(tǒng) ............................................................................................ 16 嵌入式系統(tǒng)存儲設(shè)備及其管理機制分析 .................................................... 18 在系統(tǒng)中移植 YAFFS2 文件系統(tǒng) ................................................................ 22 3 系統(tǒng)中各種設(shè)備驅(qū)動程序設(shè)計 ........................................................................................... 24 處理器與設(shè)備的數(shù)據(jù)交換方式 ................................................................................ 25 查詢方式 ......................................................................................................... 25 IV 中斷方式 ......................................................................................................... 26 直接訪問內(nèi)存方式 ......................................................................................... 26 嵌入式 Linux 中的設(shè)備驅(qū)動程序 ............................................................................ 26 嵌入式系統(tǒng)中設(shè)備驅(qū)動程序的開發(fā)過程 ..................................................... 27 標(biāo)準(zhǔn) Linux 字符設(shè)備驅(qū)動程序?qū)崿F(xiàn) .......................................................... 28 模塊 化驅(qū)動程序 ............................................................................................ 28 設(shè)備驅(qū)動程序加載和卸載 ............................................................................. 29 模數(shù)轉(zhuǎn)換器驅(qū)動程序的設(shè)計 ................................................................................... 30 硬件描述 ......................................................................................................... 30 AD 模塊驅(qū)動程序的編