树莓派使用usb无线适配器

wireless adapter必须是树莓派支持的,可以到官方或者 http://shumeipai.net 查看硬件列表

两种方案,一种不行换另一种

方案一

配置网络接口

sudo nano /etc/network/interfaces

文件内容默认如下:

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

修改如下: DHCP配置:

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
auto wlan0
iface wlan0 inet dhcp
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf

STATIC配置:

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet manual
address 192.168.0.100
netmask 255.255.255.0
gateway 192.168.0.1
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf

设置WPA认证

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

修改如下:

network={
    ssid="SSID名称"
    proto=RSN
    key_mgmt=WPA-PSK
    pairwise=CCMP TKIP
    group=CCMP TKIP
    psk="密码"
}

重启,wlan0会自动开启

方案二

wpa认证文件

sudo nano /etc/wpa_supplicant/wpa_supplicant.conf

修改内容如下

ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1

network={
    ssid="SSID名称"
    proto=RSN
    scan_ssid=1
    key_mgmt=WPA-PSK
    pairwise=CCMP
    auth_alg=OPEN
    psk="密码"
}

修改interfaces配置

sudo nano /etc/network/interfaces

DHCP配置:

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
auto wlan0
iface wlan0 inet manual
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

STATIC配置:

auto lo

iface lo inet loopback
iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet manual
address 192.168.0.100
netmask 255.255.255.0
gateway 192.168.0.1
wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
iface default inet dhcp

重启

默认会自动连上可以运行 sudo iwconfig 查看配置或者sudo ifconfig查看状态