wifi,WLAN,wpa_supplicant,wpa_cli

关于wpa_supplicant:

用到wpa_cli命令

wpa_cli -iwlan0

add_network // wlan0 是无线网络设备的名字，增加一个网络,会返回一个数字，假设为1

set_network 1 ssid'"……"' //这里ssid是要连接的网络名，注意 后面是单引号+双引号

set_network 1 psk'"……"' //这里psk是密码

enable_network 1

select_network 1

save_config

dhclient -r wlan0

dhclient wlan0

//注意可能wlan0是down的状态，有时需要 ifconfig wlan0 up

或者/etc/init.d/networking restart

wpa_cli -iwlan0 scan

wpa_cli -iwlan0 scan_result

wpa_cli -iwlan0 status

sudo ifconfig wlan0 up

sudo ifconfig wlan0 192.168.1.126

应该能ping通局域网



wpa_supplicant -iwlan0 -c/etc/wpa_supplicant.conf -B

wpa_supplicant.conf 可以在wpa_supplicant源码目录中找到：如下

ca wpa_supplicant

find -name *.conf ，不同的conf对用不同的加密方式

ps -aux |grep "wpa_supplicant"后会看到

/sbin/wpa_supplicant -B -P /run/sendsigs.omit.d/wpasupplicant.pid-u -s -O /var/run/wpa_supplicant



//wpa_wpa2.conf文件

ctrl_interface=/var/run/wpa_supplicant

network={

ssid="网络名"

psk = "密码"

}

重启网络：/etc/init.d/networking restart

添加路由：route add default gw 192.168.1.1

添加DNS ：/etc/resolv.confnameserver 192.168.1.1

sudo killall wpa_supplicant

会提示

Delete '/var/run/wpa_supplicant/wlan0' manually if it is not usedanymore

执行sudo rm /ver/run/wpa_supplicant

就可以成功执行sudo wpa_supplicant -Dwext -iwlan0-c/wpa_wpa2.conf -B

不加 -B 会打印如下内容

<3>Trying to associate with bc:d1:77:f6:9f:26(SSID='xiaofengche' freq=2437 MHz)

<3>Associated with 00:00:00:00:00:00

<3>CTRL-EVENT-DISCONNECTED bssid=bc:d1:77:f6:9f:26reason=0

<3>CTRL-EVENT-SCAN-RESULTS

<3>WPS-AP-***AILABLE

<3>Trying to associate with bc:d1:77:f6:9f:26(SSID='xiaofengche' freq=2437 MHz)

<3>Associated with 00:00:00:00:00:00

<3>CTRL-EVENT-DISCONNECTED bssid=bc:d1:77:f6:9f:26reason=0

<3>CTRL-EVENT-SCAN-RESULTS

<3>WPS-AP-***AILABLE //

写错用户名 的反应 （fengche）

ioctl[SIOCSIWSCAN]: Device or resource busy

wlan0: Failed to initiate AP scan

ioctl[SIOCSIWSCAN]: Device or resource busy

wlan0: Failed to initiate AP scan



编译并安装无线驱动 //参考http://omappedia.com/wiki/Android_Mac80211

①WLAN Driver build instruction

cd $MYDROID/hardware/ti/wlan/mac80211/compat_wl18xx

export KLIB=/path/to/kernel

export KLIB_BUILD=/path/to/kernel

export ARCH=arm

exportCROSS_COMPILE=arm-none-linux-gnueabi-

make

②Target file system setup

cd $MYDROID/hardware/ti/wlan/mac80211/compat_wl12xx

cp ./compat/compat.ko $OUT/system/lib/modules/

cp ./net/wireless/cfg80211.ko $OUT/system/lib/modules/

cp ./net/mac80211/mac80211.ko $OUT/system/lib/modules/

cp ./drivers/net/wireless/wl12xx/wl12xx.ko$OUT/system/lib/modules/

cp ./drivers/net/wireless/wl12xx/wl12xx_sdio.ko$OUT/system/lib/modules/

③WLAN firmware

Firmware files go to following location on target filesystem.

/system/etc/firmware/ti-connectivity/

④WLAN Calibration Instruction

copy wl1271-nvs.bin from file system forback-up 底下会删除它

Follow the procedure below on target device tocalibrate Wi-Fi

mount -o remount rw /system

2) Remove old NVS file

rm/system/etc/firmware/ti-connectivity/wl1271-nvs.bin

3) Set the following parameters:

exportTARGET_FW_DIR=/system/etc/firmware/ti-connectivity

exportTARGET_NVS_FILE=$TARGET_FW_DIR/wl1271-nvs.bin

exportWL12xx_MODULE=/system/lib/modules/wl12xx_sdio.ko

exportTARGET_INI_FILE=/system/etc/wifi/TQS_S_2.6.ini

4) Execute Calibrator command

# calibrator plt autocalibrate []

# dev: Device name. i.e. wlan0

# module path: Full path to wl12xx_sdio.ko kernelmodule

# ini file: Full path to Radio param ini filei.e. TQS_S_2.6.ini in this case

# nvs file: Full path of nvs file. i.e.wl1271-nvs.bin. Must be the real path as wl12xx will load it

# mac addr: MAC address to program into the NVSfile [optional]



calibrator plt autocalibrate wlan0 $WL12xx_MODULE$TARGET_INI_FILE $TARGET_NVS_FILE

or

calibrator plt autocalibrate wlan0 $WL12xx_MODULE$TARGET_INI_FILE $TARGET_NVS_FILE 08:00:12:34:56:78

# su

# wilink7.sh