A1A0A2A3A4A5A61主控芯片發(fā)射模塊配置模塊第1章緒論11課題探究的背景及目的近年來，隨著中國經(jīng)濟的迅速發(fā)展，人們生活水平不斷提高，同時對文化、知識的渴求也與日俱增。展覽館、科技館和博物館等，成為廣大人民群眾的新寵。然而傳統(tǒng)的人工講解由于其效率低、效果差，已經(jīng)不能適應(yīng)人們?nèi)找嬖鲩L的需求。智能化自動講解已經(jīng)開始逐步代替人工講解，成為了展覽講解的主力。可是現(xiàn)在的自動講解系統(tǒng)往往結(jié)構(gòu)復(fù)雜，價格昂貴，音質(zhì)差、延展性差，人們對簡易的自動講解模塊的需求越來越高。本課題旨在開發(fā)一款結(jié)構(gòu)簡單、音質(zhì)好、延展性好的簡易自動講解系統(tǒng)。根據(jù)課題的設(shè)計G16213求，開發(fā)了G1867G7389MP3、WMA音G20069文G1226解G11733、G2464G3780G17959G12447G1319G3780G6785G6930、G7092G13459識G2047、FAT32文G1226系統(tǒng)G1660G4396和G9094G7242G7186G12046G2163能的自動講解系統(tǒng)。G16825系統(tǒng)G2265G6336G3247G1022模塊G726音G20069解G11733與G6785G6930模塊，G18331G11004G14464G1860VLSIG1856G2508G1998G2709的VS1003音G20069解G11733G14467G10267，音質(zhì)好G727G7092G13459識G2047模塊，G18331G11004G7376G5455G7043G10317G13546G11733解G11733傳G17767G6980據(jù)，CRC16G7669G20576，G6980據(jù)可G19764G727G1660G4396模塊，G18331G11004G17902G11004大G4493G18339SDG2357，G18209G2524FAT32文G1226系統(tǒng)G1363延展性G7368好G727G9094G7242G7186G12046模塊。本系統(tǒng)可G1209廣G8879G3332應(yīng)G11004在展覽館、科技館和博物館等的G12447G1319G3780自動講解、G7065G9228G7235G9869的自動G6785G6265，G1209G9397G17287G4466G19481的G1363G11004G16213求。同時G16825系統(tǒng)G1867G7389G14403好的可G6205展性與G17902G11004性。12目前主流的自動講解系統(tǒng)G11458G2081主G8981的自動講解系統(tǒng)G2010為G1016G18108G2010G726發(fā)G4568G18108G2010和G6521G6922G18108G2010發(fā)G4568G18108G2010G11004于發(fā)G4568G12879G1296于設(shè)G3803G13546G2507的G13546G11733G1461G5699，G7706G3282G3926G991G726A811A9A7A10A11A12A13A14A15A16A17A18A12A19A20A21A22A23A24A25A26A27A28A292G6521G6922G18108G2010G11004于G6521G6922發(fā)G4568G16025G13634G6164發(fā)G4568的G1461G5699，然G2530G17839G15904識G2047，G1582G1998G11468G3252的G2465應(yīng)G708G6785G6930音G20069等G709，G7706G3282G3926G991G726A812A9A7A10A11A12A13A14A15A16A17A18A12A30A31A21A22G2520模塊G7053G7708G3926G991G7261、G7092G13459發(fā)G4568/G6521G6922模塊G726G18331G11004G13430G3818模塊G6122G11017G4388G7643G126262、音G20069模塊G6785G6930G726G18331G11004G999G11004的音G20069模塊3、G6980據(jù)G1660G4396模塊G726G18331G11004EEPROMG6122FLASHG708G7389時G1660G4396模塊G19610成在G16833音G14467G10267G1881G18108G709工G1328G2419G10714G726發(fā)G4568G16025G13634G1820G3818G11040G17764G4568G7092G13459G1461G2507，G6521G6922G16025G13634G6521G6922G2052G7389效G1461G2507時，G1186G6980據(jù)G4396G1660模塊中G2474G1998音G20069G6980據(jù)，G17877入音G20069模塊中G6785G6930，同時G9094G7242G7186G12046G11468應(yīng)G1461G5699。13預(yù)期效果本系統(tǒng)可G1209G7389G1016種G1363G11004G7053法，G2010G2047為G6521G6922G16025G13634固定和發(fā)G4568G16025G13634固定。在G7092人G19764近時，G6521G6922模塊的G9094G7242只G7186G12046展G2709名稱。當參觀者G19764近展臺時，G6521G6922模塊G6521G6922G2052IDG1461G2507G1461G2507，并在G9094G7242屏幕上將G7186G12046當G2081展G2709的G11468關(guān)詳細G1461G5699，同時G6521G6922模塊將次IDG2507對應(yīng)的音G20069文G1226G6785G6930G17839G15904講解。當講解結(jié)束時，G2163G6930模塊自動關(guān)閉，G1186而G4466現(xiàn)G1867G7389G6521近G2163能的自動講解。G1867G1319G2163能為G726A32A33A34A35A36A37A38A39A40A41A42A43A44A45A46A47A48A49A50A51A46A47A52A53A54A55A46A47A56A57A58A59A60A61A6231、發(fā)G4568轉(zhuǎn)G13634可G1209發(fā)G4568IDG1461G2507，并且IDG2507可G1209G17902過串口寫入，掉G11017不丟失。2、G6521G6922G16025G13634能感知發(fā)G4568G16025G13634發(fā)G4568過來的G1461G2507，并且能G1582G1998G11468應(yīng)的G2465應(yīng)，G3926G6785G6930音G20069，G7186G12046G1461G5699等。3、G6521G6922G16025G13634G1867G7389音G18339調(diào)節(jié)G2163能。4、G6521G6922G16025G13634G1867G7389音G20069的暫停與重G6930G2163能。5、G6521G6922G16025G13634G1867G7389G9094G7242G7186G12046G2163能。14本課題對目前自動講解系統(tǒng)的改進1、G11458G2081主G8981自動講解系統(tǒng)的缺G9869G726AG7092G13459發(fā)G4568/G6521G6922模塊G726G18331G11004G13430G3818模塊只能識G2047人是否G6521近，G7092法識G2047人的身份G727G18331G11004G11017G4388G7643G12626可G1209識G2047人的身份，但G1328G11004距離較短。BG11458G2081的G999G11004的音G20069模塊音G20069G18331樣率較低，音質(zhì)不佳G727音G20069錄入困難，不能G17839G15904G2530期制G1328。CG709G18331G11004EEPROMG6122FLASHG1328為G1660G4396模塊只能利G11004G10317殊的設(shè)G3803向其寫入G6980據(jù)，不便于G6980據(jù)的傳G17767和管G10714，G7092法G7368換。2、此次課題對G11458G2081主G8981自動講解系統(tǒng)的改G17839G726AG709G18331G11004G7092G13459G6922發(fā)模塊來發(fā)G17877與識G2047G13546G11733G1461G5699，距離遠、可識G2047人的身份。BG709G18331G11004MP3、WMA音G20069文G1226解G11733器G1328為音G20069G6785G6930模塊，音質(zhì)好，音G20069便于制G1328，可利G11004現(xiàn)G7389軟G1226對音G20069G17839G15904加工和G2530期制G1328。CG709G18331G11004大G4493G18339SDG2357G1328為G1660G4396模塊，G4493G18339大，G7368換簡單G727G18209G2524FAT32文G1226系統(tǒng)，可直G6521G17902過G11017腦像U盤一樣讀寫G6980據(jù)。15論文結(jié)構(gòu)安排本文G1209系統(tǒng)開發(fā)過程為總G13459，G1820對G11458G2081主G8981的自動講解系統(tǒng)G17839G15904結(jié)構(gòu)G2010析，指G1998G6164G4396在的弊病，隨G2530引G1998本課題，提G1998改G17839G7053G7708和改G17839G7053G7708的優(yōu)越性。在G6521G991來的G3247章中，我們G1820提G1998系統(tǒng)的總G1319設(shè)計G7053G7708，然G2530介紹主G16213的A63A64A65A66A67A68A694三G1022硬G1226G2163能模塊，并對每一G1022硬G1226結(jié)構(gòu)我們都G16213G17839G15904深入G3332G2010析。最G2530，給G1998對系統(tǒng)G17839G15904聯(lián)調(diào)、測試G1209及G2010析，給G1998結(jié)論。G1867G1319章節(jié)安排G3926G991G726第2章是系統(tǒng)的總G1319設(shè)計。首G1820給G1998了系統(tǒng)的總G1319設(shè)計、G2520模塊的G2163能G1209及總G1319G11017路G3282。第3章是單G10267機最小系統(tǒng)。首G1820介紹主G16213控制G14467G10267ATMEGA16，然G2530把ATMEGA16、LCD12864和AD鍵盤G1328為一G1022單G10267機最小系統(tǒng)，G2010塊逐一講解。第4章是G7376G5455G7043G10317G13546解G11733G1209及CRC16G7669G20576的G4466現(xiàn)，在本章節(jié)將闡述G7376G5455G7043G10317G11733G1209及CRC16G7669G20576G11468關(guān)知識，提G1998了幾G1022G7376G5455G7043G10317G13546解G11733G1209及CRC16G7669G20576的G7053G7708，最G2530根據(jù)本系統(tǒng)的G4466G19481情況選G1998最佳組G2524。第5章是G16833音G6785G6265與G1660G4396模塊。首G1820介紹主G16213控制G14467G10267VS1003、SDG2357的基本資料，然G2530給G1998了它們與ATMEGA16的G6521口G7053式G1209及驅(qū)動程序，最G2530研究了FAT32文G1226系統(tǒng)的結(jié)構(gòu)，并簡單闡述了其G2163能的G4466現(xiàn)。第6章是系統(tǒng)的調(diào)試、測試G1209及G2010析。首G1820給G1998了系統(tǒng)的軟G1226G7053G7706G3282，然G2530給G1998了系統(tǒng)調(diào)試過程中G6164遇G2052的問題和解決G7053法，最G2530總結(jié)的系統(tǒng)并給G1998了系統(tǒng)的不G17287之處和G1474改G5859G16277。A63A64A65A66A67A68A695第2章單片機最小系統(tǒng)單G10267機最小系統(tǒng)是G1457G19568單G10267機能G17828G15904的最基本的組G1226。G2265G6336G11017G9316、G7242G6403G11017路、復(fù)G1313G11017路等。本G20045G11458的最小系統(tǒng)G17836G2265G6336G6365鍵G11017路、調(diào)試G1235G11507G11017路和LCD12864G7186G12046G11017路。21ATMEGA16簡介及其開發(fā)環(huán)境211AVR單片機ATMEGA16簡介ATMEGA16是基于增G5390的AVRRISC結(jié)構(gòu)的低G2163G138038G1313CMOSG5506控制器。由于其G1820G17839的指G1208G19610G1209及單時G19059G2620期指G1208G6203G15904時G19400，ATMEGA16的G6980據(jù)G2546G2532率高G178101MIPS/MHZ，G1186而可G1209G13543G1955系統(tǒng)在G2163G13803和處G10714速G5242之G19400的G11695G11474。AVRG1881G7692G1867G7389G1028G4512的指G1208G19610和32G1022G17902G11004工G1328G4504G4396器。G6164G7389的G4504G4396器都直G6521與G12651G17935G17765單G1815ALUG11468G17842G6521，G1363G5483一G7477指G1208可G1209在一G1022時G19059G2620期G1881同時G16787問G1016G1022G10432G12447的G4504G4396器。G17837種結(jié)構(gòu)大大提高了代G11733效率，并且G1867G7389G8616G7234G17902的CISCG5506控制器最高G1427910G1505的G6980據(jù)G2546G2532率。ATMEGA16G7389G3926G991G10317G986916KG4395節(jié)的系統(tǒng)G1881可G13546程FLASHG1867G7389同時讀寫的能力，G2375RWW，512G4395節(jié)EEPROM，1KG4395節(jié)SRAM，32G1022G17902G11004I/O口G13459，32G1022G17902G11004工G1328G4504G4396器，G11004于G17805G11040G6207G6563的JTAGG6521口，G6915G6357G10267G1881調(diào)試與G13546程，三G1022G1867G7389G8616較模式的G9801活的定時器/計G6980器T/C,G10267G1881/G3818中斷，可G13546程串G15904USART，G7389G17227始G7477G1226G7828測器的G17902G11004串G15904G6521口，8路10G1313G1867G7389可選差G2010G17767入G13435可G13546程增益TQFPG4565G16025的ADC，G1867G7389G10267G1881G6403G14645器的可G13546程G11487G19388G10411定時器，一G1022SPI串G15904G12483口，G1209及G1857G1022可G1209G17902過軟G1226G17839G15904選G6333的G11477G11017模式。工G1328于G12366G19398模式時CPU停G8502工G1328，而USART、G1016G13459G6521口、A/D轉(zhuǎn)換器、SRAM、T/C、SPIG12483口G1209及中斷系統(tǒng)G13499G13505工G1328G727掉G11017模式時G7242G1319G6403G14645器停G8502G6403G14645，G6164G7389G2163能G19512了中斷和硬G1226復(fù)G1313之G3818都停G8502工G1328G727在G11477G11017模式G991，G5334步定時器G13499G13505G17828G15904，G1813G16780G11004G6155G1457G6357一G1022時G19400基G1946，而其G1325G2163能模塊處于G1253G11508G10378G5589G727ADCG3134G3780G6245制模式時G13468G8502CPU和G19512了G5334步定時器與ADCG1209G3818G6164G7389I/OA70A71A72A73A74A75A766模塊的工G1328，G1209G19489低ADC轉(zhuǎn)換時的開關(guān)G3134G3780G727STANDBY模式G991只G7389G7242G1319G6122G16868G6403G6403G14645器G17828G15904，其G1325G2163能模塊處于G1253G11508G10378G5589，G1363G5483器G1226只G9052G13803G7509G4581的G11017G8981，同時G1867G7389G5567速G2563動能力G727G6205展STANDBY模式G991G2029G1813G16780G6403G14645器和G5334步定時器G13499G13505工G13283。本G14467G10267是G1209ATMEL高G4506G5242G19762易失性G4396G1660器技G7427生G1147的。G10267G1881ISPFLASHG1813G16780程序G4396G1660器G17902過ISP串G15904G6521口，G6122者G17902G11004G13546程器G17839G15904G13546程，也可G1209G17902過G17828G15904于AVRG1881G7692之中的引G4560程序G17839G15904G13546程。引G4560程序可G1209G1363G11004G1231G5859G6521口將應(yīng)G11004程序G991G17745G2052應(yīng)G11004FLASHG4396G1660G2318APPLICATIONFLASHMEMORY。在G7368新應(yīng)G11004FLASHG4396G1660G2318時引G4560FLASHG2318BOOTFLASHMEMORY的程序G13499G13505G17828G15904，G4466現(xiàn)了RWWG6817G1328。G17902過將8G1313RISCCPU與系統(tǒng)G1881可G13546程的FLASHG19610成在一G1022G14467G10267G1881，ATMEGA16成為一G1022G2163能G5390大的單G10267機，為G16780G3822G4896入式控制應(yīng)G11004提G1391了G9801活而低成本的解決G7053G7708。ATMEGA16G1867G7389一G6984G3883的G13546程與系統(tǒng)開發(fā)工G1867，G2265G6336G726CG16833G16340G13546G16805器、G4451G8731G13546、程序調(diào)試器/軟G1226G1235G11507器、G1235G11507器及G16792G1284G7507。212開發(fā)環(huán)境AVRSTUDIO的使用AVRSTUDIO是ATMELG1856G2508G1998G2709的G4460G7053的G8731G13546，G991G17745與G1235G11507軟G1226。一款G19610成的程序開發(fā)G10627G3671，可G1209在WINDOWS9X/ME/NT/2000/XPG10627G3671中調(diào)試AVR的應(yīng)G11004G1147G2709。對于AVR的8G1313RISCG5506控制器系G2027，AVRSTUDIO提G1391了一G1022G20045G11458管G10714工G1867，G9316文G1226G13546G17765器，G14467G10267模G6323器和G11017路G1881G1235G11507器G6521口。此G3818，AVR單G10267機的G6915G6357STK500開發(fā)G7507，G1186而可G1209G13546程G6164G7389AVR設(shè)G3803和新的JTAGG14467G10267模G6323器。單G13443的AVRSTUDIO是G18331G11004G8731G13546G16833G16340G17839G15904G13546程G6817G1328，由于G8731G13546G16833G16340G8616較復(fù)雜可讀性不G5390，G3252此需G16213在AVRSTUDIO中G4896入WINAVRCG16833G16340G13546G16805軟G1226。WINAVRG4613是WINDOWSG10268的GCCAVR，是一G1022G13546G16805器，它可G1209將C/CG16833G16340G13546G16805成AVR單G10267機的G8731G13546代G11733。G13546程時，本文選G2474G5132G11004的CG16833G16340G17839G15904程序的G13546寫，可G6817G1328性G1209及可讀性較G5390。本G20045G11458的G13546G16805、G1235G11507G10627G3671為G726WINAVRV2061AVRSTUDIOV416。A70A71A72A73A74A75A767AVRSTUDIO的最新G10268本可G1209G1186G4460G13605WWWATMELCOMG991G17745。WINAVR的最新G10268本可G1209G1186G4460G13605WINAVRSOURCEFORGENETG991G17745。G1209G991過程G3355假定PC機上已經(jīng)安G16025好WINAVR與AVRSTUDIOG13546G16805G1235G11507G10627G3671。在桌面上G9869擊AVRSTUDIOG3282G7643，G2464擊打開，G7186G12046G1998打開文G1226菜單，G3926G328231G6164G12046。G9869擊“NEWPROJECT”，生成新文G1226，G3926G328232G6164G12046，在左側(cè)一欄中選G6333“AVRGCC”，G13546G17765好文G1226名稱，確定G6164G16213G1457G4396的文G1226夾的G1313G13634G2530，G9869擊“NEXT”，頁面轉(zhuǎn)換G17839G15904器G1226選G6333，G3926G328233G6164G12046。在左G17805欄中選G6333AVRSIMULATOR，然G2530在右G17805的菜單中選G6333ATMEGA16，G9869擊“FINISH”，G4613會G1147生G3926G328234G6164G12046的工G1328頁面，便可G1209在工G1328G2318G1881G17839G15904G13546寫程序了。A7721A78A79A76A80A81A82A70A71A72A73A74A75A768A7722A72A83A84A76A80A7723A85A80A86A87A70A71A72A73A74A75A769A7724A88A89A90A9122LCD12864的使用以及AD鍵盤的設(shè)計222LCD12864的使用LCD的G7186G12046G2419G10714及其發(fā)展，由于篇幅G2419G3252不再贅述。LCD12864是一種漢G4395G3282形G9869陣G9094G7242G7186G12046模塊，可G7186G12046漢G4395及G3282形。它主G16213G18331G11004動G5589驅(qū)動G2419G10714由G15904驅(qū)動控制器和G2027驅(qū)動器G1016G18108G2010組成了128G202764G15904的全G9869陣G9094G7242G7186G12046，G1881G136348192G1022中文漢G4395G70816X16G9869陣G709128G1022G4395符G7088X16G9869陣G709及64X256G9869陣G7186G12046RAMG708GDRAMG709。此G7186G12046器G18331G11004了COB的軟G4565G16025G7053式，G17902過G4560G11017橡膠和壓G7706G17842G6521LCD,G1363其壽命長，G17842G6521可G1976433。表21LCD12864管腳定義A92A93A94A92A93A95A96A97A98A99A1001VSSA101A102A103A104A105A1062VDDA101A102A103A104A105A1073V0LEDA108A109A104A110A111A1124RSCSA113A114A103A115A116/A117A118A119A120A121A94A122A123A124A125A126A127A128A129A130A131A132A133A134A135A13610A137A138A129A137A138A139A140A141A142A143A1445R/WSIDA145A124A125A146A147A127A148A128A129A122A123A124A149A150A151A1526ECLKA145A124A125A153A142A128A129A122A123A124A125A154A155A156A1577DB0A149A15008DB1A149A15019DB2A149A150210DB3A149A150311DB4A149A150412DB5A149A150513DB6A149A150614DB7A149A150715PSBA145/A123A124A149A150A127A148HA145A124LA123A12416NCA158A13817/RETA159A160A161A162A163A164A16518NCA158A13819LED_AA166A167A168A169A170LED_5V20LED_KA166A167A168A171A170LED_0V本G20045G11458G18331G11004LCD12864串G15904G6521口，時序G3282G3926G991G726A17225LCD12864A123A124A151A152A156A173A130A131A132A133A134A135A13611LCD的初始化G8981程G3926G991G726A17226LCDA125A174A175A176A177A178A172222AD鍵盤的設(shè)計傳統(tǒng)的IO口鍵盤和矩陣鍵盤占據(jù)IO口資G9316過G3822，由于ATMEGA16G1881G18108G19610成8路10G1313的ADC，G6164G1209G18331G11004AD鍵盤的G6521法，可G1209節(jié)G11477IO口資G9316。G11017路G3282G3926G991G6164G12046G726A17227ADA179A180A181A182A172G7092G6365鍵G6365G991時，ADCKEYG12483為低G11017平，當G7389鍵G6365G991時，可G1209根據(jù)G6164G18331G5483的G11017壓來判斷是那G1022G6365鍵被G6365G991。A183A184A185A1860X30A18712864A188A189A190A191A192A193A185A1860X01A18712864A194A195A196A185A1860X06A197A198A199A200A201A202A203A204A185A1860X0CA183A205A206A207A208A200A209A210A130A131A132A133A134A135A1361223本章小結(jié)本章給G1998了本G20045G11458的AVR單G10267機最小系統(tǒng)，是G6984G1022系統(tǒng)的G7692心，G1457證的其他的G2520G1022模塊能在它的協(xié)調(diào)G991正G5132工G1328，G1186而完成系統(tǒng)G2163能。G2010塊介紹了G2520G1022主G16213G18108G1226的G2419G10714G1209及G1363G11004，給G6984G1022G20045G11458打G991了基礎(chǔ)。A211A212A213A214A215A216A21713ATMEGA16A218A219A220A221A222A223A224A225第3章系統(tǒng)的總體方案設(shè)計本章給G1998了系統(tǒng)的總G1319G7053G7708設(shè)計，G1186G2520G1022角G5242G2010析了系統(tǒng)的可G15904性G1209及G7053G7708的確定。本系統(tǒng)是對傳統(tǒng)自動講解系統(tǒng)的改G17839和升G13435，G6164G1209總G1319結(jié)構(gòu)與傳統(tǒng)的自動講解系統(tǒng)G12879G1296，只是在G2520G1022模塊的G2163能上給與加G5390。31系統(tǒng)框圖311發(fā)射模塊發(fā)G4568模塊的主G16213G2163能G7389IDG2507的發(fā)G17877和G17902過串口來G18209G13634IDG2507并G4396G1660在ATMEGA16G1881G18108EEPROM中，掉G11017不丟失。發(fā)G4568模塊的G7706G3282G3926G991G726A22631A227A228A229A230A231A232A226312接收模塊G6521受模塊的主G16213G2163能G7389IDG2507的G6521受和識G2047、SDG2357音G20069G4396G1660。VS1003音G20069解G11733和G6785G6930、G7186G12046G1209及G6365鍵控。發(fā)G4568模塊的G7706G3282G3926G991G726A22632A233A234A229A230A231A232A226ATMEGA16A235A236A237A238A239A240SDA241A242A243A239A240A244A245FAT2G6171G2318G3348G19556G15267G6171G2318G6980G1457G11053G6171G2318G6980每FATG6171G2318G6980根G11458錄G6171G2318G3348G19556G15267G6171G2318G6980G1457G11053G6171G2318G6980每FATG6171G2318G6980FATG69802G709FATG708FILEALLOCATIONTABLEG709文G1226G18209G13634表一G1022G2010G2318G2010成同等大小的G12763，也G4613是G17842G13505G12366G19400的小塊。G12763的大小隨著FAT文G1226系統(tǒng)的G12879型G1209及G2010G2318大小而不同，G1868型的G12763大小介于2KBG205232KB之G19400。每G1022文G1226根據(jù)它的大小可能占G7389一G1022G6122者G3822G1022G12763G727G17837樣，一G1022文G1226G4613由G17837些G17837些G708稱為單G19154表G709G12763G19154G6164表G12046。然而，G17837些G19154并不一定一G1022G6521著一G1022在G11925盤上G4396G1660，它們經(jīng)G5132是在G6984G1022G6980據(jù)G2318域零G6967的G1660G4396。文G1226G2010G18209表G708FATG709是G7156G4568G2052G2010G2318每G1022G12763的G7477G11458G2027表。每G1022G7477G11458G16772錄G991面G1128種G1461G5699中的一種。G444G19154中G991一G1022G12763的G3332G3348G444一G1022G10317殊的文G1226結(jié)束符G708EOFG709符G2507指G12046G19154的結(jié)束G444一G1022G10317殊的符G2507G7643G12046G3363G12763G444一G1022G10317殊的符G2507G7643G12046G1457G11053G12763G4440來表G12046G12366G19398G12763FAT32文G1226系統(tǒng)G18331G1100432G1313的文G1226G2010G18209表，每一G1022G12907G19154表的長G5242為4G1022G4395節(jié)，含G1053G3926G991G7260X00000000G12366G19398G127630X00000001G1457G11053G127630X000000020X0FFFFFEF被占G11004的G12763G727指向G991一G1022G127630X0FFFFFF00X0FFFFFF6G1457G11053值0X0FFFFFF7G3363G127630X0FFFFFF80X0FFFFFFF文G1226最G2530一G1022G12763G8892G5859FAT32只G1363G1100432G1313中的28G1313。高4G1313G17902G5132是0但它們是G1457G11053G1313，不G16213隨G5859G7368改它們。3G709FAT32文G1226系統(tǒng)的根G11458錄A68A133A134A135A136A137A13836FAT32的另一G20045重大改G19773是根G11458錄的文G1226化，G2375將根G11458錄等同于G7234G17902的文G1226。G17837樣根G11458錄便沒G7389了FAT16中512G1022G11458錄G20045的G19492制，不夠G11004的時G1517增加G12763G19154，G2010G18209G12366G12763G2375可。而且，根G11458錄的G1313G13634也不再硬性G3332固定了，可G1209G4396G1660在G2010G2318G1881可G4559G3348的G1231G5859G12763G1881，不過G17902G5132根G11458錄是最G7101建G12447的格式化G4613生成了G11458錄表。G6164G1209，我們G11487G2052的情況基本上都是根G11458錄首G12763占G12763G2318G20046序上的第1G1022G12763。根G11458錄G4613是我們讀G2474FAT32文G1226系統(tǒng)中G6980據(jù)的第一G1022G2011入G9869，是G6984G1022G7653G10378G11458錄結(jié)構(gòu)的第一G1022G10627節(jié)。4G709FAT32文G1226系統(tǒng)的G11458錄結(jié)構(gòu)FAT文G1226系統(tǒng)的G11458錄結(jié)構(gòu)其G4466是一G20075G7389向的G1186根G2052G2506的G7653，G17837G18336提G2052的G7389向是指對于FATG2010G2318G1881的G1231一文G1226G2265G6336文G1226夾，G3355需G1186根G11458錄G4559G3348來G6226G2052。可G1209G17837樣G16760為G726G11458錄G4396G1660結(jié)構(gòu)的入口G4613是根G11458錄。FAT文G1226系統(tǒng)根據(jù)根G11458錄來G4559G3348其他文G1226G2265G6336文G1226夾，G6937而根G11458錄的G1313G13634G5529G20047在G11925盤G4396G2474G6980據(jù)之G2081G5483G1209確定。FAT文G1226系統(tǒng)G4613是根據(jù)G2010G2318的G11468關(guān)DBR參G6980與DBR中G4396G6930的已經(jīng)計G12651好的FAT表2份的大小來確定的。格式化G1209G2530，G17331G11458錄G1313G13634其G4466都已經(jīng)確定G991來了G708參G16277G1856式G726根G11458錄G6171G2318G3348G19556G15267G6171G2318G6980G1457G11053G6171G2318G6980每FATG6171G2318G6980FATG6980G709。根G11458錄之G2530便是G6980據(jù)G2318第2G12763。FAT文G1226系統(tǒng)的一G1022重G16213G5617G5831是把G11458錄文G1226夾當G1328一G1022G10317殊的文G1226來處G10714，F(xiàn)AT32甚G14279將根G11458錄當G1328文G1226處G10714。FATG2010G2318中G6164G7389的文G1226夾G11458錄文G1226，G4466G19481上可G1209G11487G1328是一G1022G4396G6930其他文G1226文G1226夾入口參G6980的G6980據(jù)表。G6164G1209G11458錄的占G11004G12366G19400的大小并不等同于其G991G6164G7389G6980據(jù)的大小，但也不等同于0。G17902G5132是占很小的G12366G19400的，可G1209G11487G1328G11458錄文G1226是一G1022簡單的二維表文G1226。其G1867G1319G4396G1660G2419G10714是G726不管G11458錄文G1226G6164占G12366G19400為G3822G4581G12763，一G12763為G3822G4581G4395節(jié)。系統(tǒng)都會G120932G1022G4395節(jié)為單G1313G17839G15904G11458錄文G1226G6164占G12763的G2010G18209。G1783732G1022G4395節(jié)G1209確定的偏G12239來定G1053本G11458錄G991的一G1022文G1226G6122文G1226夾的G4658性，G4466G19481上是一G1022簡單的二維表。G1783732G1022G4395節(jié)的G2520G4395節(jié)偏G12239定G1053G3926G991G726A68A133A134A135A136A137A13837表54FAT32短文件目錄項32個字節(jié)的表示定義A139A140A142A14416A146A149A139A140A150A160A1510X00X78A152A153A1540X80XA3A210A157A1540XB1A212A158A139A1400XC1A159A161A163A1660XD1A214A167A168A170A17210A217A175A1760XE0XF2A177A178A179A181A182A1840X100X112A177A178A179A181A186A1870X120X132A177A178A188A189A190A191A186A1870X140X152A177A178A193A194A196A197A198A19916A1760X160X172A177A178A198A188A200A201A202A182A1840X180X192A177A178A198A188A200A201A202A186A1870X1A0X1B2A177A178A193A194A196A197A198A20316A1760X1C0X1F4A177A178A198A204A205對于本G20045G11458我們只關(guān)心G1209G991幾G1022G1461G5699G7261G709文G1226名、G6205展名G726G11004于查G6226文G1226G6122文G1226夾2G709文G1226G17227始G12763G2507G726G12651G1998文G1226G1660G4396的G17227始G3332G33483G709文G1226大小G726確定讀G1998文G1226的大小532FAT32文件系統(tǒng)在SD卡上的實現(xiàn)在SDG2357中一次可G1209讀G2474G1231G5859G4395節(jié)的G6980據(jù)，但在SDHCG2357中只能讀G2474G1209512G4395節(jié)為單G1313的G6980據(jù)，為了兼G4493SDHCG2357，G6164G1209G6164G7389的SDG2357一次讀G2474G1209512G4395節(jié)G708一G6171G2318G709為單G1313的G6980據(jù)。在ATMEGA16中，只G73891KB的RAM，G6164G1209只能劃G2010G1998512G4395節(jié)G1328為SDG2357G6980據(jù)的G13543沖G2318。經(jīng)過試G20576發(fā)現(xiàn)絕大G3822G6980的FAT32文G1226系統(tǒng)G18209G13634為G726FATG69802、根G11458錄G12763G25072、每G6171G2318G4395節(jié)G6980512、每G12763G6171G2318G69808G708每G12763大小為4KG709。A206A207A208A209A211A213A17738讀G2474FAT32文G1226系統(tǒng)主G16213G2010為G3926G991幾步G7261G709讀G2474DBR，確定FAT的G6171G2318G3348和根G11458錄G6171G2318G3348G7272G709在根G11458錄中遍歷G16213打開的文G1226G6122文G1226夾G7273G709G5483G2052文G1226G6122文G1226夾的G17227始G12763G2507和文G1226大小，把當G2081G12763賦值為G17227始G12763G7274G709G17902過當G208