wifi模块工作在Station模式

linux内核：linux-2.6.39

开发板平台：at91sam9x35

WIFI模块：rt3070

~ >: ifconfig wlan0 up

~ apps>:ls

/apps >: ls etc usb_modeswitch zte_mf626.conf iwconfig wpa_supplicant iwlist wpa_supplicant.conf

1.扫描信号

/apps >: iwlist wlan0 scanning

Cell 02 - Address: C8:3A:35:C7:14:1F Channel:1 Frequency:2.412 GHz (Channel 1) Quality=33/70 Signal level=-77 dBm Encryption key:on ESSID:"Router_LingYun" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s 18 Mb/s; 36 Mb/s; 54 Mb/s Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s Mode:Master Extra:tsf=0000000675dd746e Extra: Last beacon: 3560ms ago IE: Unknown: 0003355549 IE: Unknown: 010882848B961224486C IE: Unknown: 030101 IE: Unknown: 2A0104 IE: Unknown: 32040C183060 IE: IEEE 802.11i/WPA Version 1 Group Cipher : CCMP Pairwise Ciphers (1) : CCMP Authentication Suites (1) : PSK IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00 IE: Unknown: DD07000C4306000000 IE: Unknown: 2D1A6E0102FF000000000000000000000000000000000E0000000000 IE: Unknown: 3D1601050000000000000000000000000000000000000000 IE: Unknown: 3E0100 IE: Unknown: DD1E00904C336E0102FF000000000000000000000000000000000E0000000000 IE: Unknown: DD1A00904C3401050000000000000000000000000000000000000000

我们要连的wifi名为“Router_LingYun"

2.设置IP地址和子网掩码

/apps >: ifconfig wlan0 192.168.1.110 netmask 255.255.255.0

3.运行wpa_supplicant

/apps >: iwconfig wlan0 wlan0 IEEE 802.11bgn ESSID:"Router_LingYun" Mode:Managed Frequency:2.412 GHz Access Point: C8:3A:35:C7:14:1F Bit Rate=6.5 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on Link Quality=29/70 Signal level=-81 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:1 Invalid misc:0 Missed beacon:0

/apps >: ping 192.168.1.1 -I wlan0 PING 192.168.1.1 (192.168.1.1): 56 data bytes 64 bytes from 192.168.1.1: seq=0 ttl=64 time=2110.717 ms 64 bytes from 192.168.1.1: seq=1 ttl=64 time=1110.564 ms 64 bytes from 192.168.1.1: seq=2 ttl=64 time=110.606 ms

/apps >: cat wpa_supplicant.conf # WPA-PSK/TKIP # http://www.linuxidc.com/Linux/2011-10/45202.htm # wpa_supplicant -B -Dwext -iwlan0 -c/apps/etc/wireless/wpa_supplicant.conf ctrl_interface=/var/run/wpa_supplicant network={ ssid="Roter_LingYun" /*要连的wifi的名字*/ key_mgmt=WPA-PSK proto=WPA /*这个地方一定要看是哪种加密方式，上面用iwlist扫描后看到是WPA加密。这里一定要填对，不然连不上*/ pairwise=CCMP group=CCMP psk="lingyun-emb" /*密码*/

}