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：
    1. 用wpa_cli 连接无线网络  
        http://blog.163.com/qk_zhu/blog/static/195076154201132081536347/
    2. wpa_cli 连接 wifi
        http://www.cnblogs.com/lidabo/p/4660206.html

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

三、wpa_cli command:
    1. scan
    2. scan_results
    3. add_network
    4. set_network 0 ssid "androidap"
    5. set_network 0 key_mgmt NONE
    6. select_network 0
    7. enable_network 0

四、示例：
    root@android:/ # wpa_cli -i wlan0 -p /data/misc/wifi/sockets
    wpa_cli v2.0-devel-4.2.2_rtw_r8680.20130821
    Copyright (c) 2004-2012, 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
    <3>CTRL-EVENT-STATE-CHANGE id=-1 state=3 BSSID=00:00:00:00:00:00 SSID=
    <3>CTRL-EVENT-SCAN-RESULTS 
    <3>WPS-AP-AVAILABLE 
    <3>CTRL-EVENT-STATE-CHANGE id=-1 state=2 BSSID=00:00:00:00:00:00 SSID=
    > scan_results
    bssid / frequency / signal level / flags / ssid
    ec:26:ca:e1:6b:17       2462    -49     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      Aplex-AP
    00:b0:c6:0f:24:b0       2412    -63     [WPA2-PSK-CCMP][ESS]    Aplex-AP3
    8c:be:be:01:54:d2       2412    -63     [WPA2-PSK-CCMP][ESS]    Aplex_C
    d0:fa:1d:76:01:7b       2462    -66     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      SZSD
    00:b0:c6:4f:98:27       2417    -66     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      DXYP-2015
    94:fb:b2:40:bb:98       2462    -66     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      TP-LINK-2016
    c0:61:18:fc:73:a1       2437    -67     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      ZLY-TECH
    88:25:93:77:e8:e1       2462    -67     [WPA-PSK-TKIP+CCMP][WPA2-PSK-TKIP+CCMP][ESS]SZSD
    14:75:90:ce:35:87       2412    -69     [WPA2-PSK-CCMP][WPS][ESS]       sjb
    f0:b4:29:31:1d:f1       2412    -69     [WPA2-PSK-CCMP][ESS]    Xiaomi_888
    a0:f3:c1:95:22:36       2462    -70     [WPA2-PSK-TKIP+CCMP][ESS]       TP-LINK_952236
    b0:d5:9d:58:45:14       2437    -71     [WPA2-PSK-CCMP][ESS]    huo
    f8:e9:03:b7:15:8a       2412    -71     [WPA-PSK-CCMP][WPA2-PSK-CCMP][WPS][ESS] laser309
    00:36:76:57:8b:86       2437    -73     [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS]      360\xe5\x85\x8d\xe8\xb4\xb9WiFi-86
    ec:26:ca:47:d1:f6       2437    -45     [ESS]   TP-LINK_D1F6
    18:59:36:89:7d:47       2437    -57     [ESS]   androidap
    > add_network
    0
    > set_network 0 ssid "androidap"
    OK
    > set_network 0 key_mgmt NONE
    OK
    > select_network 0
    OK
    <3>CTRL-EVENT-STATE-CHANGE id=0 state=3 BSSID=00:00:00:00:00:00 SSID=androidap
    > RTL871X: rtw_set_802_11_connect(wlan0)  fw_state=0x00000008
    <3>CTRL-EVENT-SCAN-RESULTS 
    <3>WPS-AP-AVAILABLE 
    <3>Trying to associate with 18:59:36:89:7d:47 (SSID='androidap' freq=2437 MHz)
    <3>CTRL-EVENT-STATE-CHANGE id=0 state=5 BSSID=00:00:00:00:00:00 SSID=androidap
    > RTL871X: start auth
    RTL871X: auth success, start assoc
    RTL871X: assoc success
    <3>CTRL-EVENT-STATE-CHANGE idADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
    =0 state=6 BSSID=00:00:00:00:00:00 SSID=androidap
    <3>Associated with 18:59:36:89:7d:47
    <3>CTRL-EVENT-CONNECTED - Connection to 18:59:36:89:7d:47 completed (auth) [id=0 id_str=]
    <3>CTRL-EVENT-STATE-CHANGE id=0 state=9 BSSID=18:59:36:89:7d:47 SSID=androidap
    > enable_entwork 0
    Unknown command 'enable_entwork'
    > enable_entworwlan0: no IPv6 routers present
    > enable_network 0
    OK
    > q
    root@android:/ # dhcpcd wlan0
    dhcpcd[3653]: version 5.5.6 starting
    dhcpcd[3653]: wlan0: rebinding lease of 192.168.43.34
    dhcpcd[3653]: wlan0: acknowledged 192.168.43.34 from 192.168.43.1
    dhcpcd[3653]: wlan0: checking for 192.168.43.34
    dhcpcd[3653]: wlan0: leased 192.168.43.34 for 3600 seconds
    dhcpcd[3653]: forked to background, child pid 3685
    root@android:/ # ping 14.215.177.37
    PING 14.215.177.37 (14.215.177.37) 56(84) bytes of data.
    64 bytes from 14.215.177.37: icmp_seq=1 ttl=49 time=224 ms
    64 bytes from 14.215.177.37: icmp_seq=2 ttl=49 time=47.8 ms
    64 bytes from 14.215.177.37: icmp_seq=4 ttl=49 time=91.4 ms
    64 bytes from 14.215.177.37: icmp_seq=5 ttl=49 time=63.5 ms
    ^C
    --- 14.215.177.37 ping statistics ---
    5 packets transmitted, 4 received, 20% packet loss, time 4007ms
    rtt min/avg/max/mdev = 47.865/106.898/224.694/69.780 ms
    root@android:/ #