树莓派扩展usb wifi-EPU-N8508GS

树莓派zero 扩展USB WIFI EPU-N8508GS

指令： sudo lsusb

终端显示如下，其中显示RTL8188CUS信息，说明系统已经成功识别到wifi模块

Bus 001 Device 002: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

指令： sudo ifconfig

终端显示如下，显示当前wifi设备对应为wlan0

    lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
    inet 127.0.0.1  netmask 255.0.0.0
    inet6 ::1  prefixlen 128  scopeid 0x10<host>
    loop  txqueuelen 1000  (Local Loopback)
    RX packets 0  bytes 0 (0.0 B)
    RX errors 0  dropped 0  overruns 0  frame 0
    TX packets 0  bytes 0 (0.0 B)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
  
    wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
    inet 192.168.43.230  netmask 255.255.255.0  broadcast 192.168.43.255
    inet6 fe80::a529:9fb2:36ae:22d  prefixlen 64  scopeid 0x20<link>
    ether e8:4e:06:6f:6b:09  txqueuelen 1000  (Ethernet)
    RX packets 41  bytes 4157 (4.0 KiB)
    RX errors 0  dropped 20  overruns 0  frame 0
    TX packets 53  bytes 7668 (7.4 KiB)
    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

指令：sudo iwlist wlan0 scan

扫面设备搜到的附近网络信息

编辑网络配置文件

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

在文件中添加网络名称、密码

network={ ssid="testing" psk="testingPassword"}

重启配置网络

wpa_cli -i wlan0 reconfigure

查看连接状态

ifconfig wlan0