朋友又拿來個RaspberryPi, 用來換走配置了BMP085測溫傳感器的另一個, 而新的這個要用來調試Element14.com的攝像頭.
于是下載Raspbain, image到SD卡上, 再搬出朋友拿來的顯示器來配WIFI...不對, 干嘛還要用顯示器呢...
上次用顯示器, 按照'標準流程'配置了WIFI, 很是麻煩(視頻線不好找啊..), 后來某天拿著Pi上下翻轉時(專業動作, 請勿模仿), 突然發現 -- RaspberryPi上不是還有個標準的Ethernet接口嗎?!
所以呢, 無顯示情況下配置RaspberryPi的WiFi實際很簡單 -- 通過有線網絡, 配置無線網絡.
首先(你要有個妹子) 找根網線, 把RaspberryPi連接到路由器上, 再通過路由器配置頁面獲得其有線網卡的IP地址. 有了這個IP就可以SSH到RaspberryPi上配置其無線WiFi了. 過程如下:
1. 獲得有線網卡的IP地址
RaspberryPi的Host名稱就是raspberrypi, 好認又好記啊..
2. 通過SSH登錄RaspberryPi
RaspberryPi的缺省用戶名/密碼是pi/raspberry, 一樣好認又好記啊.. 默認只能用SSH登錄, 傳統的Telnet是不支持的.
3. 檢查當前RaspberryPi網絡配置
通過ifconfig命令可以看出無線網絡已經配置了, 只是沒有被分配地址
pi@raspberrypi:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr b8:27:eb:10:70:cf
inet addr:192.168.1.106 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:579 errors:0 dropped:0 overruns:0 frame:0
TX packets:247 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:85440 (83.4 KiB) TX bytes:32266 (31.5 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
wlan0 Link encap:Ethernet HWaddr e8:4e:06:13:0c:50
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
通過查看interfaces文件也能看到無線網卡是配置好的
pi@raspberrypi:~$ cat /etc/network/interfaces
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
查看相對應的無線配置文件, 可用發現沒有可用的network被配置
pi@raspberrypi:~$ sudo cat /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
4. 配置無線網絡參數
所以呢, 加上類似下面的無線網絡參加就好了. 具體的無線網絡環境配置參數會有所不同, 那可能就需要參看其它文檔了.
pi@raspberrypi:~$ sudo cat /etc/wpa_supplicant/wpa_supplicant.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
network={
ssid="Jie's"
psk="Helloworld?"
proto=RSN
key_mgmt=WPA-PSK
pairwise=CCMP
auth_alg=OPEN
}
OK, reboot后, 我們再看RaspberryPi的網絡, 無線配好了, 那么拔掉網線, 玩去吧....
pi@raspberrypi:~$ ifconfig -a
eth0 Link encap:Ethernet HWaddr b8:27:eb:10:70:cf
inet addr:192.168.1.106 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:92 errors:0 dropped:1 overruns:0 frame:0
TX packets:79 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12649 (12.3 KiB) TX bytes:10894 (10.6 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:8 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1104 (1.0 KiB) TX bytes:1104 (1.0 KiB)
wlan0 Link encap:Ethernet HWaddr e8:4e:06:13:0c:50
inet addr:192.168.1.102 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:71 errors:0 dropped:77 overruns:0 frame:0
TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15377 (15.0 KiB) TX bytes:1398 (1.3 KiB)