最近在调试wifi,已经把wpa_supplicant 工具编译打包好了,为了测试wif驱动及wifi模块是否ok,需要用shell命令临时启动wifi服务连接wifi热点测试。
首先板子启动用ifconfig后先把wlan0启动起来
root@p1:/ # busybox-smp ifconfig wlan0 up root@p1:/ # busybox-smp ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:13931 errors:0 dropped:0 overruns:0 frame:0 TX packets:13931 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 RX bytes:773000 (754.8 KiB) TX bytes:773000 (754.8 KiB) wlan0 Link encap:Ethernet HWaddr 7C:DD:90:EC:F2:1E UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:2 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
现在wlan0已经up起来了。
然后启动wpa服务,需要一个wpa_supplicant.conf,我的配置如下
update_config=1 ctrl_interface=/data/misc/wifi/wlan0 eapol_version=1 ap_scan=1 fast_reauth=1
其中的ctrl_interface就是用来和wpa_cli通信使用,其原理是wpa_supplicant是个干活的wifi服务器(比如连接wifi,断开wifi,启动热点等),wpa_cli就是个客户端,通过本地socket通信连接上wpa_supplicant服务器,发命令叫他干活。
现在把wpa_supplicant服务启动起来
root@p1:/ # wpa_supplicant -iwlan0 -c/system/etc/wifi/wpa_supplicant.conf -B
-B是在后台运行,如果想要看过程中的详细log,可以加上参数-dd,然后用logcat同时看log。
现在wpa服务已经起来了,下面用wpa_cli客户端连接到wpa
wpa_cli -iwlan0 -p/data/misc/wifi/wlan0 wpa_cli v2.1-devel-4.4.2 Copyright (c) 2004-2013, 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 >
以上log显示已经连接上wpa了
如果wpa异常,cli就无法连接会看到一下log,然后wpa_cli处于阻塞状态
Could not connect to wpa_supplicant: wlan0 - re-trying
现在我们的wpa_cli已经连上了,可以通过命令来查看当前的wifi状态
> status wpa_state=DISCONNECTED p2p_device_address=7c:dd:90:ec:f2:1e address=7c:dd:90:ec:f2:1e <3>CTRL-EVENT-STATE-CHANGE id=-1 state=0 BSSID=00:00:00:00:00:00 SSID=
现在我们还没有连接网络,首先使用scan命令扫描一下附近的wifi网络,然后使用scan_results显示扫描的结果
> 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 scan_interval scan_results > scan_results bssid / frequency / signal level / flags / ssid 50:fa:84:50:31:5e 2472 -75 [WPA-PSK-CCMP][WPA2-PSK-CCMP][ESS] xe6xb5xb7xe8xb1x9a 28:6c:07:41:ec:32 5745 -83 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS] AirFly_5G 5e:ea:1d:8b:2b:58 5745 -86 [WPA2-PSK-CCMP][WPS][ESS] DIRECT-58-HP M130 LaserJet f2:85:c1:92:1e:41 5765 -86 [WPA2-PSK-CCMP][ESS] AIRFLY-921E52 28:6c:07:41:ec:31 2417 -85 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS] AirFly 2a:6c:07:41:ec:31 2417 -86 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS] AirFly_Guest dc:fe:18:14:e4:65 5805 -92 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][ESS] 632-5G f4:28:53:b9:dc:00 5745 -92 [WPA-PSK-CCMP+TKIP][WPA2-PSK-CCMP+TKIP][WPS][ESS] Tony_5G_O c0:21:0d:45:10:c1 5260 -76 [ESS] X-Link 10C1 f4:28:53:a6:ed:f1 5220 -90 [ESS] PIX-LINK_5G 2a:6c:07:40:ec:31 2417 -89 [ESS] f4:28:53:a6:ed:f0 2437 -92 [ESS] PIX-LINK_2.4G
这里也支持命令的tab补全功能,现在已经扫描到附近的一些wifi热点了,比如AirFly,AirFly_5G等是我们办公室的无线网,由于这个wifi模块不支持5G频道,现在只能连接2.4G的,AirFly
下面我们来添加一个刚才扫描的网络进来
> add_network 0 > add_network 1 <network id> <variable> <value> = set network variables (shows list of variables when run without arguments) <network id> <variable> <value> = set network variables (shows list of variables when run without arguments) <network id> <variable> <value> = set network variables (shows list of variables when run without arguments) > set_network 1 ssid "AirFly" OK > set_network 1 psk "********" OK
现在只是添加了网络,还没连接,真正连接命令是
enable_network n
后面的参数n就是刚才设置的那个网络 1
> enable_network 1 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>Trying to associate with 28:6c:07:41:ec:31 (SSID='AirFly' freq=2417 MHz) <3>CTRL-EVENT-STATE-CHANGE id=-1 state=5 BSSID=00:00:00:00:00:00 SSID= <3>CTRL-EVENT-ASSOC-REJECT status_code=1 <3>CTRL-EVENT-STATE-CHANGE id=1 state=0 BSSID=00:00:00:00:00:00 SSID=AirFly <3>CTRL-EVENT-ASSOC-REJECT status_code=1 <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>Trying to associate with 28:6c:07:41:ec:31 (SSID='AirFly' freq=2417 MHz) <3>CTRL-EVENT-STATE-CHANGE id=-1 state=5 BSSID=00:00:00:00:00:00 SSID= <3>CTRL-EVENT-ASSOC-REJECT status_code=1 <3>CTRL-EVENT-STATE-CHANGE id=1 state=0 BSSID=00:00:00:00:00:00 SSID=AirFly <3>CTRL-EVENT-ASSOC-REJECT status_code=1 <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>Trying to associate with 28:6c:07:41:ec:31 (SSID='AirFly' freq=2417 MHz) <3>CTRL-EVENT-STATE-CHANGE id=-1 state=5 BSSID=00:00:00:00:00:00 SSID= <3>CTRL-EVENT-STATE-CHANGE id=1 state=6 BSSID=00:00:00:00:00:00 SSID=AirFly <3>Associated with 28:6c:07:41:ec:31 <3>CTRL-EVENT-STATE-CHANGE id=1 state=7 BSSID=28:6c:07:41:ec:31 SSID=AirFly <3>CTRL-EVENT-STATE-CHANGE id=1 state=8 BSSID=28:6c:07:41:ec:31 SSID=AirFly <3>WPA: Key negotiation completed with 28:6c:07:41:ec:31 [PTK=CCMP GTK=TKIP] <3>CTRL-EVENT-CONNECTED - Connection to 28:6c:07:41:ec:31 completed (auth) [id=1 id_str=] <3>CTRL-EVENT-STATE-CHANGE id=1 state=9 BSSID=28:6c:07:41:ec:31 SSID=AirFly <3>CTRL-EVENT-DISCONNECTED bssid=28:6c:07:41:ec:31 reason=15 <3>CTRL-EVENT-STATE-CHANGE id=1 state=0 BSSID=28:6c:07:41:ec:31 SSID=AirFly <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>Trying to associate with 28:6c:07:41:ec:31 (SSID='AirFly' freq=2417 MHz) <3>CTRL-EVENT-STATE-CHANGE id=-1 state=5 BSSID=00:00:00:00:00:00 SSID= <3>CTRL-EVENT-STATE-CHANGE id=1 state=6 BSSID=00:00:00:00:00:00 SSID=AirFly <3>Associated with 28:6c:07:41:ec:31 <3>CTRL-EVENT-STATE-CHANGE id=1 state=7 BSSID=28:6c:07:41:ec:31 SSID=AirFly <3>CTRL-EVENT-STATE-CHANGE id=1 state=8 BSSID=28:6c:07:41:ec:31 SSID=AirFly <3>WPA: Key negotiation completed with 28:6c:07:41:ec:31 [PTK=CCMP GTK=TKIP] <3>CTRL-EVENT-CONNECTED - Connection to 28:6c:07:41:ec:31 completed (auth) [id=1 id_str=] <3>CTRL-EVENT-STATE-CHANGE id=1 state=9 BSSID=28:6c:07:41:ec:31 SSID=AirFly
这个过程有点长,好几秒到最后显示
CTRL-EVENT-CONNECTED - Connection to 28:6c:07:41:ec:31 completed
的时候才是真正连接上了,现在再用status看一下wifi的状态
> status bssid=28:6c:07:41:ec:31 ssid=AirFly id=1 mode=station pairwise_cipher=CCMP group_cipher=TKIP key_mgmt=WPA2-PSK wpa_state=COMPLETED p2p_device_address=7c:dd:90:ec:f2:1e address=7c:dd:90:ec:f2:1e <3>CTRL-EVENT-STATE-CHANGE id=1 state=9 BSSID=28:6c:07:41:ec:31 SSID=AirFly <3>CTRL-EVENT-CONNECTED - connection to 28:6c:07:41:ec:31 completed (auth) [id=1 id_str=] > quit
现在显示已经连接上了wifi了,使用quit命令可以退出wpa_cli。
接下来用udhcpc处理ip地址的
root@p1:/ # busybox-smp ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:295043 errors:0 dropped:0 overruns:0 frame:0 TX packets:295043 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 RX bytes:16374716 (15.6 MiB) TX bytes:16374716 (15.6 MiB) wlan0 Link encap:Ethernet HWaddr 7C:DD:90:EC:F2:1E inet6 addr: fe80::7edd:90ff:feec:f21e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:468 errors:0 dropped:203 overruns:0 frame:0 TX packets:10 errors:0 dropped:1 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:136293 (133.0 KiB) TX bytes:1248 (1.2 KiB) root@p1:/ # busybox-smp udhcpc -iwlan0 udhcpc (v1.20.0) started Sending discover... Sending select for 192.168.11.55... Lease of 192.168.11.55 obtained, lease time 43200
现在获取到一个可用的ip地址,使用ifconfig设置给wlan0
root@p1:/ # busybox-smp ifconfig wlan0 192.168.11.55 root@p1:/ # busybox-smp ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:326867 errors:0 dropped:0 overruns:0 frame:0 TX packets:326867 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 RX bytes:18140948 (17.2 MiB) TX bytes:18140948 (17.2 MiB) wlan0 Link encap:Ethernet HWaddr 7C:DD:90:EC:F2:1E inet addr:192.168.11.55 Bcast:192.168.11.255 Mask:255.255.255.0 inet6 addr: fe80::7edd:90ff:feec:f21e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:765 errors:0 dropped:253 overruns:0 frame:0 TX packets:12 errors:0 dropped:1 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:225470 (220.1 KiB) TX bytes:1960 (1.9 KiB)
网络现在算是简单的配好了,可以和电脑端用ping命令来看下是否连通
在pc上通过cmd窗口ping 192.158.11.55
C:UsersLXN>ping 192.168.11.55 正在 Ping 192.168.11.55 具有 32 字节的数据: 来自 192.168.11.55 的回复: 字节=32 时间=23ms TTL=64 来自 192.168.11.55 的回复: 字节=32 时间=31ms TTL=64 来自 192.168.11.55 的回复: 字节=32 时间=27ms TTL=64 来自 192.168.11.55 的回复: 字节=32 时间=18ms TTL=64 192.168.11.55 的 Ping 统计信息: 数据包: 已发送 = 4,已接收 = 4,丢失 = 0 (0% 丢失), 往返行程的估计时间(以毫秒为单位): 最短 = 18ms,最长 = 31ms,平均 = 24ms C:UsersLXN>ping 192.168.11.55 正在 Ping 192.168.11.55 具有 32 字节的数据: 来自 192.168.11.55 的回复: 字节=32 时间=627ms TTL=64 来自 192.168.11.55 的回复: 字节=32 时间=580ms TTL=64 来自 192.168.11.55 的回复: 字节=32 时间=275ms TTL=64 请求超时。 192.168.11.55 的 Ping 统计信息: 数据包: 已发送 = 4,已接收 = 3,丢失 = 1 (25% 丢失), 往返行程的估计时间(以毫秒为单位): 最短 = 275ms,最长 = 627ms,平均 = 494ms
已经可以ping通,不过貌似不是很稳定,两次ping测试有一次丢掉了一个包。