【正文】 o microcontrollerbased SD Card Recorder necessary hardware and software。本系統(tǒng)能夠?qū)崿F(xiàn)對(duì)聲音的多段錄音、放音、刪除等功能。 整個(gè)系統(tǒng)分為硬件設(shè)計(jì)和軟件設(shè)計(jì)兩大模塊。基于單片機(jī)的 SD 卡錄音筆設(shè)計(jì)與實(shí)現(xiàn)基于單片機(jī)的 SD 卡錄音筆設(shè)計(jì)與實(shí)現(xiàn)摘 要 本文介紹的是基于單片機(jī)的 SD 卡錄音筆的設(shè)計(jì)與實(shí)現(xiàn)。首先介紹了 SD卡和 SPCE061A 的技術(shù)應(yīng)用，發(fā)展趨勢(shì)和研究意義；然后深入分析了單片機(jī)錄音筆的基本原理，同時(shí)全面介紹了實(shí)現(xiàn)基于單片機(jī)的 SD 卡錄音筆所需要的硬件和軟件；接下來(lái)是詳細(xì)介紹了實(shí)現(xiàn)基于單片機(jī)的 SD 卡錄音筆的硬件電路設(shè)計(jì)以及軟件結(jié)構(gòu)設(shè)計(jì)；最后對(duì)整個(gè)系統(tǒng)的性能進(jìn)行測(cè)試和分析。硬件部分由凌陽(yáng)公司的SPCE061A 單片機(jī)，揚(yáng)聲器，電池組等構(gòu)成；軟件環(huán)境選擇的是與硬件配套的 u’nsp IDE 。關(guān)鍵詞：μ’nSP IDE，SPCE061A，SD 卡，錄音筆Microcontrollerbased SD Card Recorder Design Abstract基于單片機(jī)的 SD 卡錄音筆設(shè)計(jì)與實(shí)現(xiàn)This article is based on the SD Card Recorder MCU Design and Implementation. First introduced the SD card and SPCE061A of technology, trends and research significance。 followed by implementation details of the microcontrollerbased SD Card Recorder hardware circuit design and software architecture design。s SPCE061A development board, speaker, battery pack。nsp IDE . The system can realize the multi sound recording, playback, delete and so on.Keyword: μ’nSP IDE,SPCE061A,SD Card,RecorderI目 錄1 緒論 ......................................................................................................................1 SD 卡錄音筆概論 .......................................................................................1 錄音器的發(fā)展歷史 .....................................................................................3 留聲機(jī) .................................................................................................3 鋼絲錄音和磁帶 .................................................................................3 數(shù)碼錄音筆 .........................................................................................4 SD 卡錄音筆的發(fā)展趨勢(shì) ...........................................................................5 提高錄音質(zhì)量 .....................................................................................5 多功能于一身 .....................................................................................5 降低成本減小體積 .............................................................................5 基于單片機(jī)的 SD 卡錄音筆研究意義 ......................................................62 錄音筆功能分析及開(kāi)發(fā)環(huán)境 ..............................................................................7 功能概述 .....................................................................................................7 SPCE061A 對(duì) SD 卡的讀寫(xiě)功能 ......................................................7 錄/放音及刪除功能 ...........................................................................7 設(shè)計(jì)環(huán)境介紹 .............................................................................................8 系統(tǒng)硬件環(huán)境介紹 .............................................................................8 軟件工作環(huán)境 Μ’NSP IDE 介紹 .......................................................9 工程的操作 .......................................................................................13 創(chuàng)建工程過(guò)程 ................................................................................13 開(kāi)發(fā)操作過(guò)程 ................................................................................13II3 錄音筆總體設(shè)計(jì)方案及硬件設(shè)計(jì) ....................................................................15 總體設(shè)計(jì)方案 ...........................................................................................15 硬件設(shè)計(jì)總體框圖 ...........................................................................15 系統(tǒng)軟件設(shè)計(jì)架構(gòu) ...........................................................................16 系統(tǒng)硬件設(shè)計(jì) ...........................................................................................17 系統(tǒng)硬件連接實(shí)物圖 .......................................................................17 SPCE061A 最小系統(tǒng) .......................................................................17 按鍵電路 ...........................................................................................19 音頻輸出電路 ...................................................................................19 SD 卡模組電路 .................................................................................204 系統(tǒng)軟件設(shè)計(jì) ....................................................................................................21 主程序設(shè)計(jì) ...............................................................................................21 按鍵處理程序流程 ...................................................................................23 按鍵掃描程序 ...........................................................................................29 語(yǔ)音錄/放在 SD 卡上的實(shí)現(xiàn) ..............................................................31 語(yǔ)音文件操作管理程序 ......................................................................36 錄/放音程序 .........................................................................................375 系統(tǒng)測(cè)試及性能分析 ........................................................................................39 喇叭測(cè)試 ...................................................................................................39 程序下載及運(yùn)行 .......................................................................................40 系統(tǒng)功能測(cè)試 ...........................................................................................41結(jié)論 ..........................................................................................................................42III致謝 ..........................................................................................................................43參考文獻(xiàn) ..................................................................................................................44附錄 ..........................................................................................................................45附錄 1 主程序代碼() .....................................................................45外文資料翻譯(附原文) ...........................................................................................5611 緒論 SD 卡錄音筆概論SD 卡錄音筆，數(shù)字錄音器的一種，特點(diǎn)是機(jī)身小巧精致，攜帶方便，錄音筆是通過(guò) SD 卡的方式來(lái)存儲(chǔ)音頻的。SD 卡是一種基于半導(dǎo)體快閃記憶器的新一代記憶設(shè)備，它被廣泛地于便攜式裝置上使用，例如數(shù)碼相機(jī)和多媒體播放器等。除了體