【树莓派】树莓派配置无线网络访问

树莓派无线配置，之前有写过，但是总有人搞不清楚，现在我再把3份文件保存在这里，供参考；

下面包含三种配置：

interfaces interfaces.wlan0.dhcp interfaces.wlan0.static

看其中内容：

interfaces.default

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

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

allow-hotplug wlan1
iface wlan1 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

interfaces.wlan0.dhcp

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

#allow-hotplug wlan0
#iface wlan0 inet manual
#    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

auto wlan0  
allow-hotplug wlan0  
iface wlan0 inet dhcp  
        wpa-ssid "Wingspan-Working"  
        wpa-psk  "wingspan" 

allow-hotplug wlan1
iface wlan1 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

interfaces.wlan0.static

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

#allow-hotplug wlan0
#iface wlan0 inet manual
#    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

auto wlan0
allow-hotplug wlan0
iface wlan0 inet static
  wpa-ssid "Wingspan-Working"
  wpa-psk "wingspan"
  address 192.168.11.80
  netmask 255.255.255.0
  gateway 192.168.11.1

allow-hotplug wlan1
iface wlan1 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

之前的方式只是一种，而且并不是很稳定，不能配置多个WIfi链接

下面的方法可以配置多个Wifi连接：

lifeccp@raspberrypi:~ $ cat /etc/network/interfaces

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

#auto lo
auto lo wlan0 wlan1

iface lo inet loopback
iface eth0 inet dhcp

auto wlan0
allow-hotplug wlan0

iface wlan0 inet dhcp
wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

#wpa-conf /etc/wpa.conf
#iface default inet dhcp
#    wpa-ssid "Wingspan-Guest"
#    wpa-psk "wingspanwifi"

allow-hotplug wlan1
iface wlan1 inet manual
#    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

文件2：

/etc/wpa_supplicant/wpa_supplicant.conf

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

network={
ssid="test"
psk="12348765"
}

network={
ssid="hao"
psk="00009999"
}

network={
ssid="WingSpan-Guest"
psk="wingspanwifi"
}

搜索附近可用的无线网络：

lifeccp@raspberrypi:~ $ sudo iwlist wlan0 scan | grep ESSID
[sudo] password for lifeccp: 
                    ESSID:"HaoChuang-Guest"
                    ESSID:"HaoChuang-dispaly"
                    ESSID:"HaoChuang-Guest"
                    ESSID:"HaoChuang-Guest"
                    ESSID:"mac\xE7\x9A\x84MacBook Pro"

当然,配置的时候，如果有疑问，也可以参考其他的配置文档：

玩转树莓派－Raspberry，无线网配置方法：https://my.oschina.net/u/2306127/blog/392442

树莓派连接WiFi：http://jameszhan.github.io/2015/03/02/raspberry-with-wifi.html

树莓派连接WiFi（最稳定的方法）:https://i.cmgine.net/archives/11053.html

树莓派 Raspberry Pi 设置无线上网：http://www.jianshu.com/p/b42e8d3df449

---------------补充--------------

树莓派配置无线静态IP地址

修改文件： /etc/network/interfaces，命令如下

sudo vi /etc/network/interfaces

注释掉这两行

#iface wlan0 inet dhcp 
#    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

并补充如下信息，（或将最后一句 iface default inet dhcp，替换成）：

iface wlan0 inet static
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
address 192.168.21.181
netmask 255.255.255.0
gateway 192.168.21.1
dns-nameservers 61.134.1.4

则需要两个配置文件，分别如下：

/etc/network/interfaces：

auto lo
iface lo inet loopback

iface eth0 inet manual
#pre-up ifconfig eth0 hw ether 00:9a:9b:96:6a:7c

auto eth2
iface eth2 inet manual

auto wlan0
allow-hotplug wlan0

iface wlan0 inet static
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
address 192.168.21.181
netmask 255.255.255.0
gateway 192.168.21.1
dns-nameservers 61.134.1.4

#iface wlan0 inet dhcp 
#    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

#allow-hotplug wlan0
#iface wlan0 inet manual
#    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

allow-hotplug wlan1
iface wlan1 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

/etc/wpa_supplicant/wpa_supplicant.conf：

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


network={
 ssid="WingSpan-Guest"
 psk="wingspanwifi"
}

network={
  ssid="tozed-1CA8D5"
  psk="691065DA"
}