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→Ethernet port test
<p>[[File:zero2w-img107.png]]</p></li>
<li><p>Then plug one end of the network cable into the Ethernet interface of the expansion board, and the other end of the network cable into the router, and make sure the network is smooth.</p></li>
<li><p>After the system starts, it will automatically assign an IP address to the Ethernet card through '''DHCP''', '''<span style="color:#FF0000">and no other configuration is required.</span>'''</p></li>
<li><p>The command to view the IP address in the Linux system of the development board is as follows:</p>
{| class="wikitable" style="background-color:#ffffdc;width:800px;" |-| <big><p>'''Please do not copy the following commands. For example, the network node name in debian12 is end0, and the following command needs to be modified to ip a s end0.'''</p></big>|}{| class="wikitable" style="width:800px;" |-|
<p>orangepi@orangepi:~$ '''ip a s eth0'''</p>
<p>3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000</p>
:<p>link/ether 5e:ac:14:a5:93:b3 brd ff:ff:ff:ff:ff:ff</p>:<p>inet '''<span style="color:#FF0000">192.168.1.16</span>'''/24 brd 192.168.1.255 scope global dynamic noprefixroute eth0</p>::<p>valid_lft 259174sec preferred_lft 259174sec</p>:<p>inet6 240e:3b7:3240:c3a0:e269:8305:dc08:135e/64 scope global dynamic noprefixroute</p>::<p>valid_lft 259176sec preferred_lft 172776sec</p>:<p>inet6 fe80::957d:bbbd:4928:3604/64 scope link noprefixroute</p>::<p>valid_lft forever preferred_lft forever</p>|}{| class="wikitable" style="background-color:#ffffdc;width:800px;" |-| <big><p>'''There are three ways to check the IP address after the development board is started:'''</p>
<p>'''1. Connect the HDMI display, then log in to the system and use the ip a s eth0 command to check the IP address.'''</p>
<p>'''2. Enter the ip a s eth0 command in the debugging serial terminal to view the IP address.'''</p>
<p>'''C) Try another router (I have encountered many problems with routers, such as the router being unable to assign an IP address normally, or the IP address being assigned normally but not being visible in the router);'''</p>
<p>'''D) If there is no router to replace, you can only connect an HDMI display or use the debugging serial port to check the IP address.'''</p>
<p>'''In addition, it should be noted that the development board's DHCP automatic allocation of IP addresses does not require any settings.'''</p></big>|}</li>
<li><p>The command to test network connectivity is as follows. The '''ping''' command can be interrupted by pressing the '''Ctrl+C''' shortcut key.</p>
<p>'''Please do not copy the following commands. For example, the network node name in debian12 is end0. The following command needs to be modified to ping www.baidu.com -I end0.'''</p>
<span id="wifi-connection-test"></span>
=== WIFI connection test ===