1.sudo aptitude install wireless-tools
2.sudo ifconfig -a *=> check you wifi *
3.sudo ifconfig wlan0 up =>*start *
4.sudo iwlist wlan0 scan =>find your wifi
5.sudo wpa_passphrase wifi_name wifi_passwd > /etc/wpa_supplicant.
conf
6.sudo vim /etc/network/in*ces
like this
1: # WiFi Example
2: auto wlan0
3: iface wlan0 inet dhcp
4: wpa-ssid "wifi ssid"
5: wpa-psk "password"
7.sudo ifup wlan0
在 2014年2月25日星期二 UTC+8下午7:38:18，HPCR写道：
>
> Hi
>
> I am working on beaglebone black trying to integrate TP link TL-WN721N
> Wifi dongle which uses atheros driver.
>
> I am using linux 3.2 kernel with ti-sitara rootfs
>
> The problem is when is type the command
>
> wpa_supplicant -Dwext -i wlan0 -c
> /etc/wpa_supplicant.conf
>
> it shows Successfully initialised wpa_supplicant
>
> but it gets stuck there and i have to give ctrl+c to exit from that
> ,after that i gave
>
> ifup wlan0
>
> the response was
>
> Sending discover...
>
> Sending discover...
>
> Sending discover...
>
> No lease, failing
>
> after this I repeated the step for wpa_supplicant this time also it gets
> stuck and when I gave ifup wlan0
>
> this time it got the correct IP and was able to ping..........
>
> This cycles was seemed to repeat when I tried connecting any-other wifi
> networks (ie: wpa_supplicant gets stuck two times and on the second attempt
> of ifup wlan0 only i will be able to get IP)
>
>
>
> here is my /etc/wpa_supplicat.conf file
>
>
>
> network={
>
> ssid="UTStarcom"
>
> #psk="123force"
>
>
> psk=44d83e5c96bd39f47b54625d80b80c79d5b14430d424fdf6636365901b01ab14
>
> }
>
>
>
> and my /etc/network/interfaces
>
>
> # The loopback interface
>
> auto lo
>
> iface lo inet loopback
>
> # Wired or wireless interfaces
>
> auto eth0
>
> iface eth0 inet static
>
> address 192.168.2.30
>
> netmask 255.255.255.0
>
> gateway 192.168.2.1
>
> allow-hotplug wlan0
>
> auto wlan0
>
> iface wlan0 inet dhcp
>
> wpa-driver wext
>
> wpa-conf /etc/wpa_supplicant.conf
>
>
>
>
>
> Please help me out of this issue
>
> Regards
>
> HPCR
>
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