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    wpa_cli 連接 wifi

    2016-09-28 00:00:00 廣州睿豐德信息科技有限公司 閱讀
    睿豐德科技 專注RFID識別技術和條碼識別技術與管理軟件的集成項目。質量追溯系統、MES系統、金蝶與條碼系統對接、用友與條碼系統對接

    轉自:http://hi.baidu.com/yyangjjun/item/9dfe8e175439fc7a1009b5ba

      1: run wpa_supplicant first

    use the following command:
    wpa_supplicant -Dwext -iwlan0 -C/data/system/wpa_supplicant -c/data/misc/wifi/wpa_supplicant.conf

    2: Run the command line tool wpa_cli to connect wifi

    wpa_cli -p/data/system/wpa_supplicant -iwlan0
    Then , it will let you set network interactively 

    some common command:
    >scan = to scan the neighboring AP
    >scan_results = show the scan results
    >status = check out the current connection information
    >terminate = terminate wpa_supplicant
    >quit = exit wpa_cli
    >add_network = it will return a network id to you
    >set_network <network id> <variable> <value> = set network variables (shows list of variables when run without arguments), success will return OK, or will return Fail
    >select_network <network id> = select a network (disable others)
    >disable_network <network id> = disable a network
    >enable_network <network id> = enable a network
    > set_network 0 priority 0
    > list_network
    > save_config

    3: example
    for AP that doesn`t have encryption
    >add_network      (It will display a network id for you, assume it returns 0)
    >set_network 0 ssid “666”
    >set_network 0 key_mgmt NONE
    >enable_network 0
    >quit

    if normal, we have connectted to the AP “666”, now you need a IP to access internet, for example:
    dhcpcd wlan0
    if everything is ok, it will get an IP & can access internet

    for AP that has WEP
    >add_network      (assume returns 1)
    >set_network 1 ssid “666”
    >set_network 1 key_mgmt NONE
    >set_network 1 wep_key0 “your ap passwork”(if usting ASCII, it need double quotation marks, if using hex, then don`t need the double quotation marks)
    >set_network 1 wep_tx_keyidx 0
    >select_network 1  (optional, remember, if you are connecting with another AP, you should select it to disable the another)
    >enable_network 1
    and then ,get an IP to access internet

    for AP that has WPA-PSK/WPA2-PSK
    >add_network      (assume returns 2)
    >set_network 2 ssid “666”
    >set_network 2 psk “your pre-shared key”
    >select_network 2  (optional, remember, if you are connecting with another AP, you should select it to disable the another)
    >enable_network 2

    there is still some others options to be set, but wpa_supplicant will choose the default for you, the default will include all we need to set and then ,get an IP to access internet

    命令執行后,wpa_cli 會輸出連接的過程信息。如果一切正確,則最后后輸出:
    <2>CTRL-EVENT-CONNECTED - Connection to xx:xx:xx:xx:xx:xx completed (reauth) [id=0 id_str=]

    獲取IP地址
    用 quit
    命令退出wpa_cli 。然后用
    dhclient wlan0
    命令獲取IP地址。RFID管理系統集成商 RFID中間件 條碼系統中間層 物聯網軟件集成
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