【ESP32-Korvo测评】 02 硬件熟悉
本帖最后由 天意无罪 于 2021-2-28 17:22 编辑<p style="text-align:justify"><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">趁周末有点时间赶紧写下第二篇测评文章，话说离3月15号只有2个星期了，还真有点担心做不完测评啊，一开年公司就喊加班，哎……还让人好好生活不了啊。</span></span></span></span></span></span></span></p>
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<p><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">上篇测评文章主要讲开发板得体验：</span></span></span></span></span></span></span><a href="https://bbs.eeworld.com.cn/thread-1157096-1-1.html" target="_blank"><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">https://bbs.eeworld.com.cn/thread-1157096-1-1.html</span></span></span></span></span></span></span></a></p>
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<p><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">这篇文章准备开发板的硬件原理进行了解，以便对开发板硬件有个全面的了解，方便后面的测评，下面开始进入正题。</span></span></span></span></span></span></span></p>
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<p><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">开发板由2张印制板组成，采用垂直方向堆叠方式，板与板之间采用FPC排线连接。</span></span></span></span></span></span></span></p>
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<p><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">顶层印制板硬件上主要包括：</span></span></span></span></span></span></span> </p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">（一）12</span></span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">颗RGB灯</span></span></span></span></span></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="font-family:宋体">型号为</span></span><span lang="EN-US" style="font-size:12.0pt">WS2812</span><span style="font-size:12.0pt"><span style="font-family:宋体">，该</span></span><span lang="EN-US" style="font-size:12.0pt">RGB</span><span style="font-size:12.0pt"><span style="font-family:宋体">灯为单</span></span><span lang="EN-US" style="font-size:12.0pt">IO</span><span style="font-size:12.0pt"><span style="font-family:宋体">总线控制方式，使用简单；</span></span></span></span></span></p>
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<p>（二）<span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">3</span></span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">个模拟MEMS硅麦克风</span></span></span></span></span></span></span></p>
<p><span style="font-size:10.5pt"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="font-family:宋体">型号为敏芯科技的</span></span><span lang="EN-US" style="font-size:12.0pt">MSM381A3729H9BPC</span></span></span></span></p>
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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">（三）6</span></span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">个按键</span></span></span></span></span></span></span></p>
<p><span style="font-size:10.5pt"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="font-family:宋体">功能定义为</span></span><span lang="EN-US" style="font-size:12.0pt"><span style="background:white"><span style="color:black">PLAY,SET,VOL-,VOL+,MODE</span></span></span><span style="font-size:12.0pt"><span style="background:white"><span style="font-family:宋体"><span style="color:black">和</span></span></span></span><span lang="EN-US" style="font-size:12.0pt"><span style="background:white"><span style="color:black">REC</span></span></span><span style="font-size:12.0pt"><span style="background:white"><span style="font-family:宋体"><span style="color:black">，且支持用户重定义；</span></span></span></span></span></span></span></p>
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<p><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">底层印制板硬件上主要包括：</span></span></span></span></span></span></span></p>
<p>（一）<span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%">ESP32-WROVER</span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">模组</span></span></span></span></span></span></span></p>
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<p>（二）<span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">音频</span></span></span><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%">ADC</span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">采集电路</span></span></span></span></span></span></span></p>
<p><span style="font-size:10.5pt"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="font-family:宋体">芯片为顺芯科技的</span></span><span lang="EN-US" style="font-size:12.0pt">ES7210</span><span style="font-size:12.0pt"><span style="font-family:宋体">，该部分电路的功能主要是完成对</span></span><span lang="EN-US" style="font-size:12.0pt">3</span><span style="font-size:12.0pt"><span style="font-family:宋体">个模拟硅麦克风的音频模拟信号采集。</span></span></span></span></span></p>
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<p><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">（三）音频</span></span></span><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%">DAC</span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">编码器及放大电路</span></span></span></span></span></span></span></p>
<p><span style="font-size:10.5pt"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="font-family:宋体">编码器芯片为顺芯科技的</span></span><span lang="EN-US" style="font-size:12.0pt">ES8311</span><span style="font-size:12.0pt"><span style="font-family:宋体">，该部分电路的功能主要是耳机和外接喇叭的信号驱动和放大。</span></span></span></span></span></p>
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<p style="text-align:justify"> <i><font face=""Calibri",sans-serif">（四）</font></i><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%">USB</span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">转</span></span></span><span lang="EN-US" style="font-size:12.0pt"><span style="line-height:150%">UART</span></span><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">电路</span></span></span></span></span></span></span></p>
<p><span style="font-size:10.5pt"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="font-family:宋体">芯片型号为</span></span><span lang="EN-US" style="font-size:12.0pt"><a href="http://www.baidu.com/link?url=TBqHRKn4w2Rk-avUpPVzimuhJwUf7GBo-ORLLhumO3aUcV5YDa5BsKRQ6aqYY_aBVceuBqDtqRRCN7Eu3LRypTUM4QdCCog7wh969oDgWBS" style="color:blue; text-decoration:underline" target="_blank"><span style="color:#000000;"><span style="font-family:宋体">Silicon Labs</span></span></a></span><span style="font-size:12.0pt"><span style="font-family:宋体">的</span></span><span lang="EN-US" style="font-size:12.0pt">CP2102</span><span style="font-size:12.0pt"><span style="font-family:宋体">，由原理图可以看出，当需要给</span></span><span lang="EN-US" style="font-size:12.0pt">ESP32</span><span style="font-size:12.0pt"><span style="font-family:宋体">模组编程时不再需要按下</span></span><span lang="EN-US" style="font-size:12.0pt">Reset</span><span style="font-size:12.0pt"><span style="font-family:宋体">和</span></span><span lang="EN-US" style="font-size:12.0pt">Boot</span><span style="font-size:12.0pt"><span style="font-family:宋体">按键，告知</span></span><span lang="EN-US" style="font-size:12.0pt">CPU</span><span style="font-size:12.0pt"><span style="font-family:宋体">需要进入编程模式，而是通过</span></span><span lang="EN-US" style="font-size:12.0pt">CP2102</span><span style="font-size:12.0pt"><span style="font-family:宋体">的</span></span><span lang="EN-US" style="font-size:12.0pt">DTR</span><span style="font-size:12.0pt"><span style="font-family:宋体">和</span></span><span lang="EN-US" style="font-size:12.0pt">RTS</span><span style="font-size:12.0pt"><span style="font-family:宋体">实现自动模式切换和下载固件。</span></span></span></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="line-height:150%"><span style="font-family:宋体">（五）电源管理电路</span></span></span></span></span></span></span></p>
<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Calibri",sans-serif"><span style="text-justify:inter-ideograph"><span style="font-size:12.0pt"><span style="font-family:宋体">开发板的供电输入支持</span></span><span lang="EN-US" style="font-size:12.0pt">USB-Micro</span><span style="font-size:12.0pt"><span style="font-family:宋体">接口供电和电池供电，并由硬件自动切换输入源。</span></span></span></span></span></p>
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<p style="text-align:justify">下面是完整的开发板原理图和主要芯片的数据手册分享：</p>
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<p>自己占个位</p>
<p>感谢分享~~继续努力</p>
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