樹莓派3連接wifi

時間 2019-12-05

標籤樹莓連接 wifi 欄目無線简体版

原文原文鏈接

查看網卡狀態

咱們能夠使用ifconfig命令查看當前的網卡狀態信息。vim

root@raspberrypi:~# ifconfig 
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.31.159  netmask 255.255.255.0  broadcast 192.168.31.255
        inet6 fe80::a579:e25:d60e:838a  prefixlen 64  scopeid 0x20<link>
        ether b8:27:eb:08:b2:02  txqueuelen 1000  (Ethernet)
        RX packets 42954  bytes 2101217 (2.0 MiB)
        RX errors 0  dropped 27  overruns 0  frame 0
        TX packets 292  bytes 26175 (25.5 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

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=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        ether b8:27:eb:5d:e7:57  txqueuelen 1000  (Ethernet)
        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

其中eth0爲有線網卡，lo表明127.0.0.1即localhost，wlan0表明無線網卡。網絡

下表對參數作一下簡單解釋框架

<>	UP 網卡已啓用less BROADCAST 廣播oop LOOPBACK 本地訪問ui RUNNING 網卡正在運行spa MULTICAST 多路廣播code
mtu	MTU（Maximum Transmission Unit）最大傳輸單元
inet	IPV4地址
netmask	網絡掩碼
broadcast	廣播地址
inet6	IPV6地址
prefixlen	前綴長度
ether	網卡地址（MAC）
txqueuelen	傳輸緩區長度大小意思
RX packets bytes	接收{數據包數量數據包大小}
RX errors dropped overruns frame	接收{錯誤數丟包數溢出數框架}
TX packets bytes	發送{數據包數量數據包大小}
TX errors dropped overruns carrier collisions	發送{錯誤數丟包數溢出數載體衝突}

查看無線鏈接狀態

ESSID參數爲off顯然尚未連接無線網絡ip

root@raspberrypi:~# iwconfig
wlan0     IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=31 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          
lo        no wireless extensions.

eth0      no wireless extensions.

查找無線網絡

列出可以搜索到的所有無線網絡ci

root@raspberrypi:~# iwlist wlan0 scan    
wlan0     Scan completed :
          Cell 01 - Address: A8:57:4E:86:7B:7E
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=43/70  Signal level=-67 dBm  
                    Encryption key:on
                    ESSID:"TP-LINK_867"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              9 Mb/s; 12 Mb/s; 18 Mb/s
                    Bit Rates:24 Mb/s; 36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=0000000000000000
                    Extra: Last beacon: 80ms ago
                    IE: Unknown: 000B54502D4C494E4B5F383637
                    IE: Unknown: 010882848B960C121824
                    IE: Unknown: 030101
                    IE: Unknown: 2A0100
                    IE: Unknown: 32043048606C
                    IE: Unknown: 2D1A6E1003FFFF000000000000000000000000000000000000000000
                    IE: Unknown: 3D1601050200000000000000000000000000000000000000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: WPA Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: DD05000AEB0100
                    IE: Unknown: DD8E0050F204104A0001101044000102103B0001031047001000000000000010000000A8574E867B7E1021000754502D4C494E4B10230009544C2D57523834324E10240003342E3010420007312E312E312E331054000800060050F204000110110018576972656C657373204E20526F757465722057523834324E100800022288103C0001011049000600372A000120

配置wifi信息

root@raspberrypi:~# vim /etc/wpa_supplicant/wpa_supplicant.conf

在配置文件中增長無線wifi的配置

...
network={    
    ssid="Xiaomi_F636"
    psk="imlichao"
}

重啓系統

重啓系統後咱們能夠看到無線網卡已經啓用並鏈接到了wifi。

root@raspberrypi:~# ifconfig 
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.31.159  netmask 255.255.255.0  broadcast 192.168.31.255
        inet6 fe80::a579:e25:d60e:838a  prefixlen 64  scopeid 0x20<link>
        ether b8:27:eb:08:b2:02  txqueuelen 1000  (Ethernet)
        RX packets 895  bytes 48460 (47.3 KiB)
        RX errors 0  dropped 1  overruns 0  frame 0
        TX packets 91  bytes 13742 (13.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

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 192.168.31.134  netmask 255.255.255.0  broadcast 192.168.31.255
        inet6 fe80::36eb:7046:a7fb:ddb3  prefixlen 64  scopeid 0x20<link>
        ether b8:27:eb:5d:e7:57  txqueuelen 1000  (Ethernet)
        RX packets 69  bytes 8121 (7.9 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 36  bytes 6014 (5.8 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

root@raspberrypi:~# iwconfig 
wlan0     IEEE 802.11  ESSID:"Xiaomi_F636"  
          Mode:Managed  Frequency:2.412 GHz  Access Point: 64:09:80:12:F6:37   
          Bit Rate=24 Mb/s   Tx-Power=31 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=55/70  Signal level=-55 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.

相關標籤/搜索

每日一句

每一个你不满意的现在，都有一个你没有努力的曾经。