tagetage 发表于 2020-8-18 09:33

【树莓派4B测评】树莓派4的各个功能查看和测试

<div class='showpostmsg'><p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">【树莓派</span>4B<span style="font-family:宋体">测评】树莓派</span>4<span style="font-family:宋体">的各个功能查看和测试</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">分为以下几个部分:</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">1<span style="font-family:宋体">,检查树莓派版本</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">2<span style="font-family:宋体">,</span>CPU<span style="font-family:宋体">查看</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">3<span style="font-family:宋体">,内存查看</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">4<span style="font-family:宋体">,</span>CPU<span style="font-family:宋体">温度查看</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">5<span style="font-family:宋体">,</span>GPIO<span style="font-family:宋体">查看和测试</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">6<span style="font-family:宋体">,</span>3.5<span style="font-family:宋体">耳机口测试</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">7<span style="font-family:宋体">,</span>USB3.0<span style="font-family:宋体">端口测试</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">8<span style="font-family:宋体">,网络连接速率查看和测试</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">9<span style="font-family:宋体">,总结</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">1</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,检查树莓派版本</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="font-family:宋体">在</span>Raspbian<span style="font-family:宋体">中打开终端,输入&ldquo;</span>dmesg<span style="font-family:宋体">&rdquo;,然后按</span>Enter<span style="font-family:宋体">键查看树莓派版本</span>1.1<span style="font-family:宋体">还是</span>1.2<span style="font-family:宋体">。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">2</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,CPU查看</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="font-family:宋体">输入命令&ldquo;</span>lscpu<span style="font-family:宋体">&rdquo;查看树莓派</span>4<span style="font-family:宋体">的</span>CPU<span style="font-family:宋体">情况。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">3</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,内存查看</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="font-family:宋体">输入命令&ldquo;</span>free<span style="font-family:宋体">&rdquo;查看树莓派</span>4<span style="font-family:宋体">的内存情况。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">4</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,CPU温度查看</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="font-family:宋体">命令行方式查看</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">cat /sys/class/thermal/thermal_zone0/temp | awk &#39;{print $1/1000}&#39;</span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">现在的树莓派系统支持在桌面的任务栏直接查看,非常的方便,推荐使用。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">5</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,GPIO查看</span></span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">GPIO<span style="font-family:宋体">查看方式一:可以用</span>pinout<span style="font-family:宋体">命令查看</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">GPIO<span style="font-family:宋体">查看方式二:可以使用</span>gpio readall<span style="font-family:宋体">命令查看,但在使用</span>gpio readall<span style="font-family:宋体">命令时,出现无法查询到管脚信息,后来找资料确认是</span>wiringPi<span style="font-family:宋体">的版本(</span>V2.50<span style="font-family:宋体">)旧,不匹配树莓派</span>4<span style="font-family:宋体">的新系统。需要使用下面三条命令将</span>wiringPi<span style="font-family:宋体">的版本升级到</span>V2.52<span style="font-family:宋体">才可以。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">cd /tmp</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">wget https://project-downloads.drogon.net/wiringpi-latest.deb</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">sudo dpkg -i wiringpi-latest.deb</span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">更多的</span>GPIO<span style="font-family:宋体">信息请登录网址</span> https://pinout.xyz/</span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:14.0pt"><span style="font-family:宋体">GPIO</span></span><span style="font-size:14.0pt"><span style="font-family:宋体">测试:</span></span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">GPIO<span style="font-family:宋体">我只测试是否能控制高低电平输出就可以,所以是用最简单的使用</span>Shell<span style="font-family:宋体">命令操作</span>GPIO<span style="font-family:宋体">。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">下面的例子是测试树莓派的第</span>37<span style="font-family:宋体">脚(</span>GPIO26<span style="font-family:宋体">)的输出电平。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">cd /sys/class/gpio</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">ls</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"># <span style="font-family:宋体">执行该操作之后,该目录下会增加一个</span>gpio26<span style="font-family:宋体">文件</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">echo&nbsp; 26&gt; export</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"># <span style="font-family:宋体">进入</span>GPIO26<span style="font-family:宋体">目录</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">cd gpio26</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"># <span style="font-family:宋体">查看有哪些可以设置</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">ls</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"># <span style="font-family:宋体">设置</span>GPIO26<span style="font-family:宋体">为输出方向</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">echo out &gt; direction</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"># <span style="font-family:宋体">输出高电平</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">echo 1 &gt; value</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"># <span style="font-family:宋体">输出低电平</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">echo 0 &gt; value</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"># <span style="font-family:宋体">返回上级目录</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">cd ..</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"># <span style="font-family:宋体">注销</span>GPIO26<span style="font-family:宋体">接口</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">echo 26 &gt; unexport</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">ls</span></span></p>

<p style="text-align:justify"></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">6</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,3.5耳机口测试</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="font-family:宋体">树莓派</span>4<span style="font-family:宋体">的耳机和上一代一样也是支持</span>AV<span style="font-family:宋体">视频输出的,是四节的</span>3.5<span style="font-family:宋体">接口,和国内常用的四节</span>AV<span style="font-family:宋体">线是不一样的,另外树莓派</span>4<span style="font-family:宋体">的</span>AV<span style="font-family:宋体">视频输出在</span>/boot/config.txt<span style="font-family:宋体">中的配置和以前也不一样,有需要的网友自己找资料。如果不需要</span>AV<span style="font-family:宋体">视频输出,只用三节的耳机听声音是没有问题的,大家也不用担心</span>AV<span style="font-family:宋体">输出和地线连接到一起会短路,树莓派在设计的时候考虑过这个问题,是没有关系的。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">另外声音输出还要选择一下是</span>3.5<span style="font-family:宋体">耳机口输出还是</span>HDMI<span style="font-family:宋体">输出。右键声音图标就可以直接选择。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">关于树莓派</span>4<span style="font-family:宋体">的音质,我不是发烧友,不能进行评判,我只能测试一下左右声道。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">有一个测试左右声道的</span>mp3<span style="font-family:宋体">文件在附件中可以下载。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">7</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,USB3.0端口测试</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="font-family:宋体">这次使用的是雷克沙</span>UHS-1<span style="font-family:宋体">的</span>USB3.0<span style="font-family:宋体">读卡器</span>+<span style="font-family:宋体">三星</span>128G<span style="font-family:宋体">的</span>UHS-1<span style="font-family:宋体">的</span>TF<span style="font-family:宋体">卡。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">将卡插到树莓派上竟然无法识别,这是因为树莓派默认无法识别</span> exfat<span style="font-family:宋体">,</span> <span style="font-family:宋体">需要安装</span> exfat-fuse <span style="font-family:宋体">。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">使用命令安装</span>exfat-fuse<span style="font-family:宋体">。然后重新插上</span>TF<span style="font-family:宋体">卡,就可以被正常识别了。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">sudo apt-get install exfat-fuse</span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">使用</span>fdisk<span style="font-family:宋体">命令列出所有的分区。可以看到</span>TF<span style="font-family:宋体">卡挂载的位置是</span>/dev/sda1</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">sudu fdisk -l</span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">安装磁盘测试软件</span>hdparm</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">sudo apt-get install hdparm</span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">测试</span>TF<span style="font-family:宋体">卡的读取速度</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">hdparm -Tt /dev/sda1</span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">可以看到读取速度达到了</span>81.20MB/sec<span style="font-family:宋体">,达到了我的</span>TF<span style="font-family:宋体">卡的读取极限了。但是没有达到</span>USB3.0<span style="font-family:宋体">口的速度极限,但这比</span>USB2.0<span style="font-family:宋体">还是快很多。</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">8</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,网络连接速率查看和测试</span></span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">&nbsp; <span style="font-family:宋体">使用</span> ethtool ethx <span style="font-family:宋体">命令查看支持的速率(树莓派这里</span>x<span style="font-family:宋体">是</span>0<span style="font-family:宋体">,就是</span>eth0<span style="font-family:宋体">)</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">网络带宽测试软我选用</span>Iperf<span style="font-family:宋体">,</span>Iperf <span style="font-family:宋体">是一个网络性能测试工具。</span>Iperf<span style="font-family:宋体">可以测试最大</span>TCP<span style="font-family:宋体">和</span>UDP<span style="font-family:宋体">带宽性能,具有多种参数和</span>UDP<span style="font-family:宋体">特性,可以根据需要调整,可以报告带宽、延迟抖动和数据包丢失。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">官方网址:</span>https://iperf.fr/</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">Windows<span style="font-family:宋体">版本的</span>iperf3<span style="font-family:宋体">可以在附件中下载。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">软件全平台支持:</span></span></span></p>

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<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">在树莓派</span>4<span style="font-family:宋体">上是用命令安装</span>iperf3</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">sudo apt-get install iperf3</span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">安装完成后将树莓派和台式电脑都连接到千兆路由器的</span>LAN<span style="font-family:宋体">口,树莓派和台式电脑</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">都设置成自动获取</span>IP<span style="font-family:宋体">地址。台式电脑获取的</span>IP<span style="font-family:宋体">为</span>192.168.3.237<span style="font-family:宋体">,树莓派获取的</span>IP<span style="font-family:宋体">地址为</span>192.168.3.238<span style="font-family:宋体">。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">在电脑端开启服务,开始</span>-<span style="font-family:宋体">运行</span>-cmd<span style="font-family:宋体">,进入</span>iperf3<span style="font-family:宋体">的安装目录。</span></span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">执行</span>iperf3 -s -p 8111<span style="font-family:宋体">,开启一个端口为</span>8111<span style="font-family:宋体">的服务端。</span></span></span></p>

<p style="text-align:justify"></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">然后在树莓派上敲入测试命令</span> </span></span></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif">sudo iperf3 -c 192.168.3.237 -p 8111</span></span></p>

<p style="text-align:justify"></p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span style="font-family:宋体">可以看到千兆网口可以跑满。</span></span></span></p>

<p style="text-align:justify">&nbsp;</p>

<p style="text-align:justify"><span style="font-size:10.5pt"><span style="font-family:Calibri,sans-serif"><span lang="EN-US" style="font-size:16.0pt"><span style="font-family:宋体">9</span></span><span style="font-size:16.0pt"><span style="font-family:宋体">,总结</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="font-family:宋体">这篇测评把树莓派的一些外设的查看和测试方法介绍给大家,还有一些比如</span>USB2.0,<span style="font-family:宋体">还有</span>WIFI<span style="font-family:宋体">,蓝牙等测试比较简单或雷同,就没向大家一一介绍,以后的测评会测试</span>CPU<span style="font-family:宋体">的视频解码能力和千兆网口的网络相关应用,请大家耐心等待。</span></span></span></p>

<p style="text-align:justify">&nbsp;</p>

<p style="text-align:justify">&nbsp;</p>
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okhxyyo 发表于 2020-8-24 07:12

<p><a href="https://bbs.eeworld.com.cn/thread-1137107-1-1.html" target="_blank">树莓派4B测评</a></p>

<p>汇总:<a href="https://bbs.eeworld.com.cn/thread-1137107-1-1.html">https://bbs.eeworld.com.cn/thread-1137107-1-1.html</a></p>

lcofjp 发表于 2020-8-18 12:12

<p>感谢分享!</p>

freebsder 发表于 2020-8-18 15:32

<p>中文字体看着好别扭,界面上还是有钱搞字体的公司好看。</p>
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查看完整版本: 【树莓派4B测评】树莓派4的各个功能查看和测试