【Silicon Labs 开发套件评测】+硬件赏析
<ol><li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">首先我们对开发套件整体认识，</font><font face="Calibri">pcb</font><font face="宋体">排版是非常完美的。</font></span></span></span></span></li>
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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">我们使用的硬件版本是</font><font face="Calibri">BRD2503A-A02</font><font face="宋体">，关于版本的说明：</font></span></span></span></span></p>
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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">主要功能：</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri"><font face="宋体">适用于超低功耗工作场景的板载外围设备电源控制</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri"><font face="宋体">相对湿度和温度传感器</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri"><font face="宋体">环境光传感器</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri"><font face="宋体">霍尔效应传感器</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri">6 <font face="宋体">轴惯性传感器</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri">PDM <font face="宋体">立体声麦克风</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri">8 MB <font face="宋体">串行闪存</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri"><font face="宋体">用户</font> LED <font face="宋体">和按钮</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri">20 <font face="宋体">引脚 </font><font face="Calibri">2.54 mm </font><font face="宋体">外接垫</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri">SEGGER J-Link <font face="宋体">板载调试器</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri"><font face="宋体">虚拟</font> COM <font face="宋体">端口</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri">Mini Simplicity <font face="宋体">连接器，适用于采用外部 </font><font face="Calibri">Silicon Labs </font><font face="宋体">调试器的 </font><font face="Calibri">AEM </font><font face="宋体">和虚拟 </font><font face="Calibri">COM</font></span></span></span></span></p>
<p style="text-align: justify; margin-left: 40px;"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:Calibri">USB <font face="宋体">或纽扣电池供电</font></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">结构框图：</font></span></span></span></span></li>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="Calibri">MCU</font></span></span></span></span></li>
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<p style="text-indent:21.0000pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:Helvetica"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal">EFM32PG22 32</span></span></span></span></span></span><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:Helvetica"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="Helvetica">位微控制器</font></span></span></span></span></span></span><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:Helvetica"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="Helvetica">，</font></span></span></span></span></span></span><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:Helvetica"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="Helvetica">A</font></span></span></span></span></span></span><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:Helvetica"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal">RM Cortex-M33</span></span></span></span></span></span><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:宋体"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="宋体">内核，主频最高</font><font face="Helvetica">76.8Mhz</font><font face="宋体">，</font><font face="Helvetica">512KB</font><font face="宋体">的</font><font face="Helvetica">flashhe</font><font face="宋体">和</font><font face="Helvetica">32KB RAM</font><font face="宋体">。</font><font face="Helvetica">RAM</font><font face="宋体">我认为还是偏小，如果使用实时系统，</font><font face="Helvetica">RAM</font><font face="宋体">就要精打细算。在活动状态下功耗是</font><font face="Helvetica">27uA/MHz</font><font face="宋体">，相对功耗还是比较低的。</font></span></span></span></span></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:宋体"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="宋体">电源</font></span></span></span></span></span></span></span></span></li>
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<p style="text-indent:21.0000pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">可以通过</font><font face="Calibri">USB</font><font face="宋体">接口或</font><font face="Calibri">CR2032</font><font face="宋体">电池供电。</font><font face="Calibri">USB</font><font face="宋体">和电池自动切换。</font></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:宋体"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="Helvetica">RESET</font><font face="宋体">复位</font></span></span></span></span></span></span></span></span></li>
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<p style="text-indent:21.0000pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:宋体"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="宋体">可以通过人工按下</font><font face="Helvetica">RESET</font><font face="宋体">复位按钮进行复位</font></span></span></span></span></span></span></span></span></p>
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<p style="text-indent:21.0000pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">也可以仿真器拉低</font><font face="Calibri">Reset</font><font face="宋体">引脚复位。</font></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:宋体"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="宋体">外设设备</font></span></span></span></span></span></span></span></span></li>
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<p style="margin-left:28px; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">不同接口连接不同的外设，有</font><font face="Calibri">I2C</font><font face="宋体">接口，</font><font face="Calibri">SPI</font><font face="宋体">接口，</font><font face="Calibri">GPIO</font><font face="宋体">接口、</font><font face="Calibri">mic</font><font face="宋体">接口等。</font></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">温湿度传感器</font><font face="Calibri">Si7021</font><font face="宋体">、霍尔传感器</font><font face="Calibri">Si7210</font><font face="宋体">，光传感器</font><font face="Calibri">VEML6035</font><font face="宋体">挂在</font><font face="Calibri">I2C</font><font face="宋体">总线上。</font></span></span></span></span></li>
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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">总线是否启用，通过开关</font><font face="Calibri">TS3A4751</font><font face="宋体">来控制</font></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="Calibri">PDM</font><font face="宋体">立体声麦克风</font><font face="Calibri">SPK0641HT4H-1</font><font face="宋体">，连接在</font><font face="Calibri">MIC</font><font face="宋体">接口上。</font></span></span></span></span></li>
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<p style="text-indent:21.0000pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">仍然通过开关</font><font face="Calibri">TS3A4751</font><font face="宋体">来控制是否启用</font></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="Calibri">6</font><font face="宋体">轴惯性传感器</font><font face="Calibri">ICM-20648</font><font face="宋体">，链接在</font><font face="Calibri">SPi</font><font face="宋体">接口上</font></span></span></span></span></li>
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<p style="text-indent:21.0000pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">也是通过开关控制是否启用</font></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">用户按键和</font><font face="Calibri">LED</font><font face="宋体">灯</font></span></span></span></span></li>
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<p style="margin-left:28px; text-indent:21.0000pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">直接使用</font><font face="Calibri">GPIO</font><font face="宋体">控制。</font></span></span></span></span></p>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">外部</font><font face="Calibri">SPi</font><font face="宋体">接口</font><font face="Calibri">flash</font><font face="宋体">存储芯片</font><font face="Calibri">MX25R8035F</font><font face="宋体">，与</font><font face="Calibri">6</font><font face="宋体">轴惯性传感器共用</font><font face="Calibri">SPi</font><font face="宋体">接口。</font></span></span></span></span></li>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">背面就是板载仿真器硬件了。</font></span></span></span></span></li>
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<li style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="background:#ffffff"><span style="font-family:宋体"><span style="color:#000000"><span style="letter-spacing:0.0000pt"><span style="font-style:normal"><font face="宋体">扩展接口</font></span></span></span></span></span></span></span></span></li>
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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri"><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">硬件大体就是这些，通过研读记录，在资源上都有。后续再实现每个模块功能时再详细说明。</font></span></span></span></span></p>
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