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<font face="宋體 ">底層的<span class="t_tag" onclick="tagshow(event)" href="tag.php?name=%C7%FD%B6%AF">驅(qū)動</span>或內(nèi)核開發(fā)人員通常要跟<span class="t_tag" onclick="tagshow(event)" href="tag.php?name=%D3%B2%BC%FE">硬件</span>緊密的配合</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">協(xié)同完成工作</font><font face="Times New="New" Roman="Roman" ">.</font><font face="宋體 ">硬件電路的設(shè)計(jì)很大程度上決定驅(qū)動代碼的編寫</font><font face="Times New="New" Roman="Roman" ">.</font><font face="宋體 ">一個熟練的底層開發(fā)人員具備硬件開發(fā)知識</font> <font face="Times New="New" Roman="Roman" ">.</font> <font face="Times New="New" Roman="Roman" "></font> <font face="宋體 ">硬件開發(fā)知識</font> <font face="Wingdings ">l </font><font face="宋體 ">大致清楚硬件的設(shè)計(jì)和生產(chǎn)流程</font><font face="Times New="New" Roman="Roman" ">.</font> <font face="Wingdings ">l </font><font face="宋體 ">清楚自已工作中常用的硬件器件的工作原理</font><font face="Times New="New" Roman="Roman" ">.</font> <font face="Wingdings ">l </font><font face="宋體 ">要有看懂硬件原理圖的能力</font><font face="Times New="New" Roman="Roman" ">.</font><font face="宋體 ">主要涉及影響到編程的關(guān)鍵的連線和管腳的一定要看懂</font><font face="Times New="New" Roman="Roman" ">.</font> <font face="Wingdings ">l </font><font face="宋體 ">要看懂硬件</font><font face="Times New="New" Roman="Roman" ">(</font><font face="宋體 ">主要是能編程控制的集成電路</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">簡稱</font><font face="Times New="New" Roman="Roman" ">IC)</font><font face="宋體 ">的編程資料</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">一般是稱為</font><font face="Times New="New" Roman="Roman" ">DataSheet</font><font face="宋體 ">的</font><font face="Times New="New" Roman="Roman" ">PDF</font><font face="宋體 ">文檔</font><font face="Times New="New" Roman="Roman" ">.</font><font face="宋體 ">主要各個寄存器的<span class="t_tag" onclick="tagshow(event)" href="tag.php?name=%C9%E8%D6%C3">設(shè)置</span></font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">和常見任務(wù)的處理流程</font> <font face="Times New="New" Roman="Roman" "></font> <font face="宋體 "><span class="t_tag" onclick="tagshow(event)" href="tag.php?name=%C8%ED%BC%FE">軟件</span>相關(guān)能力</font> <font face="Wingdings ">l </font><strong><font face="宋體 ">要知道如何用編程語言</font><font face="Times New="New" Roman="Roman" ">(</font></strong><strong><font face="宋體 ">主要是</font><font face="Times New="New" Roman="Roman" ">C,</font></strong><strong><font face="宋體 ">和少量的匯編</font><font face="Times New="New" Roman="Roman" ">)</font></strong><strong><font face="宋體 ">去控制硬件</font><font face="Times New="New" Roman="Roman" ">.</font></strong> <font face="Wingdings ">l </font><font face="宋體 ">還要熟悉底層軟件與操作<span class="t_tag" onclick="tagshow(event)" href="tag.php?name=%CF%B5%CD%B3">系統(tǒng)</span>的接口</font><font face="Times New="New" Roman="Roman" ">.</font> <font face="Wingdings ">n </font><font face="宋體 ">象同一款硬件</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">原始的控制代碼是基本上一樣的</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">但是各個操作系統(tǒng)對驅(qū)動與</font><font face="Times New="New" Roman="Roman" ">OS</font><font face="宋體 ">的接口</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">完全不一樣</font><font face="Times New="New" Roman="Roman" ">.Windows</font><font face="宋體 ">系列的驅(qū)動接口遠(yuǎn)比</font><font face="Times New="New" Roman="Roman" ">Linux</font><font face="宋體 ">復(fù)雜得多</font><font face="Times New="New" Roman="Roman" ">.</font><font face="宋體 ">各個操作系統(tǒng)也提供了不同底層函數(shù)接口用于開發(fā)</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">這些都需要熟練掌握的</font><font face="Times New="New" Roman="Roman" ">.</font> <font face="Wingdings ">l </font><font face="宋體 ">具有調(diào)試底層軟件的能力</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">除了常用的軟件調(diào)試手段</font><font face="Times New="New" Roman="Roman" ">,(</font><font face="宋體 ">如單步</font><font face="Times New="New" Roman="Roman" ">DEBUG,</font><font face="宋體 ">查看輸出信息</font><font face="Times New="New" Roman="Roman" ">...)</font><font face="宋體 ">有時可能需要動用軟件</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">和硬件檢測設(shè)備來調(diào)試</font> <font face="Wingdings ">n </font><font face="宋體 ">如<span class="t_tag" onclick="tagshow(event)" href="tag.php?name=%CD%F8%C2%E7">網(wǎng)絡(luò)</span>調(diào)試</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">可能需要抓包軟件</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">基于硬件的流量測試儀</font> <font face="Wingdings ">n </font><font face="宋體 ">基于硬件的電路的儀器</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">如萬用電表</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">顯波器和邏輯分析儀</font> <font face="Wingdings ">n </font><font face="宋體 ">基于無線的設(shè)備</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">可能需要無線信號發(fā)生器或基站模擬設(shè)備</font> <font face="Times New="New" Roman="Roman" "></font> <font face="宋體 ">在底層軟件開發(fā)領(lǐng)域</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">還有一些非標(biāo)準(zhǔn)</font><font face="Times New="New" Roman="Roman" ">CPU</font><font face="宋體 ">的分支開發(fā)領(lǐng)域</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">由于采用接近于</font><font face="Times New="New" Roman="Roman" ">CPU</font><font face="宋體 ">的復(fù)雜結(jié)構(gòu)</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">因此必須用的編程語言去開發(fā)</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">但又不是普通的</font><font face="Times New="New" Roman="Roman" ">gcc</font><font face="宋體 ">那樣的開發(fā)環(huán)境</font><font face="Times New="New" Roman="Roman" ">.</font><font face="宋體 ">而是自己獨(dú)立的開發(fā)環(huán)境</font><font face="Times New="New" Roman="Roman" ">.</font><font face="宋體 ">很多嵌入式工程師需要常握其中一種<span class="t_tag" onclick="tagshow(event)" href="tag.php?name=%B9%A4%BE%DF">工具</span></font> <font face="Wingdings ">l </font><font face="宋體 ">常用數(shù)據(jù)處理</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">如音頻</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">加密</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 "><span class="t_tag" onclick="tagshow(event)" href="tag.php?name=%CA%D3%C6%B5">視頻</span>影像處理的</font><font face="Times New="New" Roman="Roman" ">DSP,</font><font face="宋體 ">都會有自已獨(dú)立的開發(fā)環(huán)境</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">有的是接近匯編級的語法代碼</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">更高級是類似于</font><font face="Times New="New" Roman="Roman" ">C</font><font face="宋體 ">的編程語言</font><font face="Times New="New" Roman="Roman" ">.</font> <font face="Wingdings ">l </font><font face="宋體 ">在網(wǎng)絡(luò)流量很大的地方</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">如核心路由器</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">大型的防火墻</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">網(wǎng)關(guān)</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">等</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">這一些設(shè)備有時用軟件已經(jīng)無法處理</font><font face="Times New="New" Roman="Roman" ">.</font><font face="宋體 ">往往采用基于網(wǎng)絡(luò)處理器的的方案</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">網(wǎng)絡(luò)處理器會在硬件直接處理網(wǎng)絡(luò)包</font><font face="Times New="New" Roman="Roman" ">,</font><font face="宋體 ">這些網(wǎng)絡(luò)處理器也有獨(dú)立的開發(fā)環(huán)境用于</font> <font face="Wingdings ">l </font><font face="Times New="New" Roman="Roman" ">FPGA,CPLD (VHDL)</font>
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主題：嵌入式軟件開發(fā)人員,硬件常識

嵌入式軟件開發(fā)人員,硬件常識

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