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→RTL8811测试
<li><p>首先将RTL8811无线网卡模块插入开发板的USB接口中</p></li>
<li><p>然后Linux系统会自动加载RTL8811 WIFI相关的内核模块，通过lsmod命令可以看到下面内核模块已自动加载</p>
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<p>orangepi@orangepi:~$ '''lsmod'''</p>
<pspan style="margin-right: 100px;">Module </span><span style="margin-right: 50px;">Size </span><span style="margin-right: 45px;">Used by</pspan><br><pspan style="margin-right: 100px;">8821cu </span><span style="margin-right: 50px;">1839104 </span><span style="margin-right: 50px;">0</pspan><br>|}</li>
<li><p>通过dmesg命令可以看到RTL8811模块的加载信息</p>
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<p>orangepi@orangepi:~$ '''dmesg'''</p>
<p>[ 118.618194] usb 2-1: new high-speed USB device number 2 using ehci-platform</p>
<p>[ 118.767235] usb 2-1: SerialNumber: 123456</p>
<p>[ 119.500530] usbcore: registered new interface driver rtl8821cu</p>
<p>[ 119.525498] rtl8821cu 2-1:1.0 wlx1cbfced9d260: renamed from wlan0</p>|}</li><li><p>然后通过'''sudo ifconfig'''命令可以看到WIFI的设备节点，WIFI的连接和测试方法请参看[[\lOrange Pi CM4#WIFI连接测试|'''WIFI连接测试''']]一节，这里不再赘述</p>{| class="wikitable" style="width:800px;" |-|
<p>orangepi@orangepi:~$ '''sudo ifconfig wlx1cbfced9d260'''</p>
<p>wlx1cbfced9d260: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500</p>
::<p>ether 1c:bf:ce:d9:d2:60 txqueuelen 1000 (Ethernet)</p>::<p>RX packets 0 bytes 0 (0.0 B)</p>::<p>RX errors 0 dropped 0 overruns 0 frame 0</p>::<p>TX packets 0 bytes 0 (0.0 B)</p>::<p>TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0</p>|}</li></ol>
<span id="usb摄像头测试"></span>
