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Anchor10144391014439 Creating Wireless Ad Hoc Access Point Anchor10146371014637Some applications may need to create an a wireless ad hoc access point that can be accessed by other devices. Wireless ad hoc access points can be created by calling the NetIF_WiFi_CreateAdhoc() API function with the necessary parameters. See section C-10-3 “NetIFNetIF_WiFi_CreateAdhoc()” on page 535 for CreateAP for more information. Anchor

10206061020606A call to NetIF_WiFi_CreateAdhoc() is shown below:anchor

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NET_ERR err;   ap_ctn =
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                              (1)
                                NET_IF_WIFI_DATA_RATE_AUTO,
(2)
          (2)
                                NET_IF_WIFI_SECURITY_WEP,
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            (3)
                                NET_IF_WIFI_PWR_LEVEL_HI,
(4)
            (4)
                                NET_IF_WIFI_CH_1
(5) “adhoc_ssid”, (6) “adhoc_password”, (7) &err); (8)
titleListing - Call to NetIF_WiFi_CreateAdhoc()
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NET_ERR         err;

ap_ctn = NetIF_WiFi_CreateAdhoc(if_nbr,
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                     (5)
                               "adhoc_ssid",                         (6)
                               "adhoc_password",                     (7)
                               &err);                                (8)


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  1. NetIF_WiFi_CreateAdhoc()

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  1. requires eight arguments. The first argument is the interface number, which is acquired upon

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  1. successfully adding and starting the interface.

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  1. The second argument is the data rate used on the wireless network.

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  1. The third argument is the wireless security type of the wireless network.

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  1. The fourth argument is the radio power level

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  1. used to communicate on the wireless network.

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  1. The fifth argument is the wireless channel for the ad hoc network.

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  1. The sixth argument is a pointer to a string that contains the SSID of the wireless access point.

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  2. The seventh argument is a pointer to a string that contains the pre-shared key of the wireless access point.

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  1. The last argument is a pointer to a NET_ERR

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  1. that contains the return error code. The return error variable will contain the value NET_IF_WIFI_ERR_NONE if the create process has been completed successfully.

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If an error occurs, you should always inspect the return error code and take the appropriate action. There are very few things that could cause a failure to create an ad hoc network properly. Once the error is resolved, the application may again attempt to call NetIF_WiFi_CreateAdhoc().