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分类: 嵌入式
2015-09-05 23:15:08
Step by step:
1、运行wpa_supplicant程序;
执行:/system/bin/wpa_supplicant -d -Dwext -iwlan0
-c/da
其中:
-d :增加调试信息
-Dwext :wext,驱动名称
-iwlan0 :wlan0,网络接口名称
/system/bin/wpa_supplicant :wpa_supplicant可执行程序path
/da
2、运行命令行工具wpa_cli ;
执行 :wpa_cli -iwlan0
-p/da
注,-p/da
此时会进入交互模式。其中交互模式的命令如下表:
Full command |
Short command |
Description |
status |
stat |
displays the current connection status |
disconnect |
disc |
prevents wpa_supplicant from connecting to any access point |
quit |
q |
exits wpa_cli |
terminate |
term |
kills wpa_supplicant |
reconfigure |
recon |
reloads wpa_supplicant with the configuration file supplied (-c parameter) |
scan |
scan |
scans for available access points (on |
scan_result |
scan_r |
displays the results of the last scan |
list_networks |
list_n |
displays a list of configured networks and their status (active or not, enabled or disabled) |
select_network |
select_n |
select a network among those defined to initiate a connection (ie select_network 0) |
enable_network |
enable_n |
makes a configured network available for selection (ie enable_network 0) |
disable_network |
disable_n |
makes a configured network unavailable for selection (ie disable_network 0) |
remove_network |
remove_n |
removes a network and its configuration from the list (ie remove_network 0) |
add_network |
add_n |
adds a new network to the list. Its id will be created automatically |
set_network |
set_n |
shows a very short list of available options to configure a network when supplied with no parameters. See next section for a list of extremely useful parameters to be used with set_network and get_network. |
get_network |
get_n |
displays the required parameter for the specified network. See next section for a list of parameters |
save_config |
save_c |
saves the configuration |
设置网络的基本格式:set_network <network id> <key> <parameter> [<parameter>]
显示网络信息的基本格式:get_network <network id> <key>
相应的参数如下表:
Key |
Description |
Parameters |
ssid |
Access point name |
string |
id_str |
String identifying the network |
string |
priority |
Connection priority over other APs |
number (0 being the default low priority) |
bssid |
Mac address of the access point |
mac address |
scan_ssid |
Enable/disbale ssid scan |
0, 1, 2 |
key_mgmt |
Type of key management |
WPA-PSK, WPA_EAP, None |
pairwise |
Pairwise ciphers for WPA |
CCMP, TKIP |
group=TKIP |
Group ciphers for WPA |
CCMP, TKIP, WEP104, WEP40 |
psk |
Pre-Shared Key (clear or encrypted) |
string |
wep_key0 |
WEP key (up to 4: wep_key[0123]) |
string |
eap |
Extensible Authentication Protocol |
MD5, MSCHAPV2, OTP, GTC, TLS, PEAP, TTLS |
identity |
EAP identity string |
string |
password |
EAP password |
string |
ca_cert |
Pathname to CA certificate file |
/full/path/to/certificate |
client_cert |
Pathname to client certificate |
/full/path/to/certificate (PEM/DER) |
private_key |
Pathname to a client private key file |
/full/path/to/private_key (PEM/DER/PFX) |
eg.1、连接无加密的AP
>add_network
>set_network 0 ssid "666"
>set_network 0 key_mgmt NONE
>enable_network 0
>quit
eg.2、连接WEP加密AP
>add_network
>set_network 1 ssid "666"
>set_network 1 key_mgmt NONE
>set_network 1 wep_key0 "your ap password"
>enable_network 1
eg.3、连接WPA-PSK/WPA2-PSK加密的AP
>add_network
>set_network 2 ssid "666"
>set_network 2 psk "your pre-shared key"
>enable_network 2
到此,wifi模块就能连接上AP了。
3、以上是通过命令行工具wpa_cli来实现wifi网络的连接。当然,也可以通过wpa_supplicant的配置文件来实现连接。
再回顾下运行wpa_supplicant时执行的命令:
/system/bin/wpa_supplicant -d
-Dwext -iwlan0
-c/da
我们在执行时加上了-c/da
eg.
ctrl_interface=DIR=/da
network={
ssid="my access point"
proto=WPA
key_mgmt=WPA-PSK
psk="you pass words"
}