I.MX6 wpa_cli 使用

/***********************************************************************
 *                    I.MX6 wpa_cli 使用
 * 说明：
 *     在调试Android wifi功能之前，先要保证wpa_supplicant调试是正常才行，
 * 否者都很难确定到底那一层的软件出了问题。
 *
 *                                   2016-6-28 深圳 南山平山村 曾剑锋
 **********************************************************************/

一、参考文档：
    . 用wpa_cli 连接无线网络
        http://blog.163.com/qk_zhu/blog/static/195076154201132081536347/
    . wpa_cli 连接 wifi
        http://www.cnblogs.com/lidabo/p/4660206.html

二、shell command:
    . wpa_supplicant -iwlan0 -Dnl80211 -c/etc/wifi/wpa_supplicant.conf &
    . wpa_cli -i wlan0 -p /data/misc/wifi/sockets

三、wpa_cli command:
    . scan
    . scan_results
    . add_network
    . set_network  ssid "androidap"
    . set_network  key_mgmt NONE
    . select_network
    . enable_network 

四、示例：
    root@android:/ # wpa_cli -i wlan0 -p /data/misc/wifi/sockets
    wpa_cli v2.-devel-4.2.2_rtw_r8680.
    Copyright (c) -, Jouni Malinen <j@w1.fi> and contributors

    This software may be distributed under the terms of the BSD license.
    See README for more details.

    Interactive mode

    > scan
    OK
    <>CTRL-EVENT-STATE-CHANGE id=- state= BSSID=::::: SSID=
    <>CTRL-EVENT-SCAN-RESULTS
    <>WPS-AP-AVAILABLE
    <>CTRL-EVENT-STATE-CHANGE id=- state= BSSID=::::: SSID=
    > scan_results
    bssid / frequency / signal level / flags / ssid
    ec::ca:e1:6b:           -     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      Aplex-AP
    :b0:c6:0f::b0           -     [WPA2-PSK-CCMP][ESS]    Aplex-AP3
    8c:be:be:::d2           -     [WPA2-PSK-CCMP][ESS]    Aplex_C
    d0:fa:1d:::7b           -     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      SZSD
    :b0:c6:4f::           -     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      DXYP-
    :fb:b2::bb:           -     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      TP-LINK-
    c0:::fc::a1           -     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      ZLY-TECH
    ::::e8:e1           -     [WPA-PSK-TKIP+CCMP][WPA2-PSK-TKIP+CCMP][ESS]SZSD
    :::ce::           -     [WPA2-PSK-CCMP][WPS][ESS]       sjb
    f0:b4:::1d:f1           -     [WPA2-PSK-CCMP][ESS]    Xiaomi_888
    a0:f3:c1:::           -     [WPA2-PSK-TKIP+CCMP][ESS]       TP-LINK_952236
    b0:d5:9d:::           -     [WPA2-PSK-CCMP][ESS]    huo
    f8:e9::b7::8a           -     [WPA-PSK-CCMP][WPA2-PSK-CCMP][WPS][ESS] laser309
    ::::8b:           -     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      \xe5\x85\x8d\xe8\xb4\xb9WiFi-
    ec::ca::d1:f6           -     [ESS]   TP-LINK_D1F6
    ::::7d:           -     [ESS]   androidap
    > add_network

    > set_network  ssid "androidap"
    OK
    > set_network  key_mgmt NONE
    OK
    > select_network
    OK
    <>CTRL-EVENT-STATE-CHANGE id= state= BSSID=::::: SSID=androidap
    > RTL871X: rtw_set_802_11_connect(wlan0)  fw_state=0x00000008
    <>CTRL-EVENT-SCAN-RESULTS
    <>WPS-AP-AVAILABLE
    <>Trying to associate with ::::7d: (SSID='androidap' freq= MHz)
    <>CTRL-EVENT-STATE-CHANGE id= state= BSSID=::::: SSID=androidap
    > RTL871X: start auth
    RTL871X: auth success, start assoc
    RTL871X: assoc success
    <>CTRL-EVENT-STATE-CHANGE idADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
    = state= BSSID=::::: SSID=androidap
    <>Associated with ::::7d:
    <>CTRL-EVENT-CONNECTED - Connection to ::::7d: completed (auth) [id= id_str=]
    <>CTRL-EVENT-STATE-CHANGE id= state= BSSID=::::7d: SSID=androidap
    > enable_entwork
    Unknown command 'enable_entwork'
    > enable_entworwlan0: no IPv6 routers present
    > enable_network
    OK
    > q
    root@android:/ # dhcpcd wlan0
    dhcpcd[]: version 5.5. starting
    dhcpcd[]: wlan0: rebinding lease of 192.168.43.34
    dhcpcd[]: wlan0: acknowledged 192.168.43.34 from 192.168.43.1
    dhcpcd[]: wlan0: checking for 192.168.43.34
    dhcpcd[]: wlan0: leased 192.168.43.34 for  seconds
    dhcpcd[]: forked to background, child pid
    root@android:/ # ping 14.215.177.37
    PING 14.215.177.37 (14.215.177.37) () bytes of data.
     bytes from 14.215.177.37: icmp_seq= ttl= time= ms
     bytes from 14.215.177.37: icmp_seq= ttl= time=47.8 ms
     bytes from 14.215.177.37: icmp_seq= ttl= time=91.4 ms
     bytes from 14.215.177.37: icmp_seq= ttl= time=63.5 ms
    ^C
    --- 14.215.177.37 ping statistics ---
     packets transmitted,  received, % packet loss, time 4007ms
    rtt min/avg/max/mdev = 47.865/106.898/224.694/69.780 ms
    root@android:/ #