User`s manual

OEM User’s Manual 61
• WIFISCAN.C—initializes the RCM5600W and scans for other Wi-Fi devices that are
operating in either the ad-hoc mode or through access points in the infrastructure mode.
No network parameter settings are needed since the RCM5600W does not actually join
an 802.11 network. This program outputs the results of the scan to the Dynamic C
STDIO window.
• WIFISCANASSOCIATE.C— demostrates how to scan Wi-Fi channels for SSIDs using
ifconfig IFS_WIFI_SCAN. This takes a while to complete, so ifconfig() calls a
callback function when it is done. The callback function is specified using ifconfig
IFS_WIFI_SCAN
.
Before you run this sample program, configure the Dynamic C TCP_CONFIG.LIB
library and your TCPCONFIG macro.
1. Use macro definitions in the “Defines” tab in the Dynamic C Options > Project
Options menu to modify any parameter settings.
If you are not using DHCP, set the IP parameters to values appropriate to your network.
Set the macro IFC_WIFI_SSID= to define a C-style string to set the SSID of your
access point as, for example,
or use an empty string, "", to associate with the strongest BSS available.
Alternatively, you may create your own CUSTOM_CONFIG.LIB library modeled on the
Dynamic C TCP_CONFIG.LIB library. Then use a TCPCONFIG macro greater than or
equal to 100, which will invoke your CUSTOM_CONFIG.LIB library to be used.
Remember to add the CUSTOM_CONFIG.LIB library to LIB.DIR.
2. If you are using DHCP, change the definition of the TCPCONFIG macro to 5. The default
value of 1 indicates Wi-Fi with a static IP address.
Now compile and run the sample program. Follow the menu options displayed in the
Dynamic C
STDIO window.
Note that
ifconfig IFS_WIFI_SCAN function calls do not return data directly since
the scan takes a fair amount of time. Instead, callback functions are used. The callback
function is passed to ifconfig() as the only parameter to IFS_WIFI_SCAN.
ifconfig(IF_WIFI0, IFS_WIFI_SCAN, scan_callback, IFS_END);
_PRIMARY_STATIC_IP = "10.10.6.100"
_PRIMARY_NETMASK = "255.255.255.0"
MY_NAMESERVER = "10.10.6.1"
MY_GATEWAY = "10.10.6.1"
IFC_WIFI_SSID = "My Access Point"
Press s to scan available access points
Press a to scan access points and associate
Press m to print WIFI MAC status