Z-World RCM3000, User Manual

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44 802.11b (Wi-Fi) Add-On Kits
4.6 Helpful Hints
1. When an access point/ad-hoc host is turned off after a Wi-Fi CompactFlash card has
joined it, the Linksys WCF12 card will remain in the “joined” state and will wait for the
access point/ad-hoc host to become alive again. This may require cycling of the MAC
interface to find a new access point using the following code sequence.
...
wifi_ioctl(NULL,WIFI_MAC,"off",0);
wifi_ioctl(NULL,WIFI_MAC,"on",0);
2. If you are using a PC or other computer to communicate with the Wi-Fi enabled Rab-
bitCore or PowerCore module, and you change the Wi-Fi CompactFlash card, you may
need to flush the ARP cache in the PC or other computer that holds the translation for
the hardware (MAC) address to the IP address with the following command at the
MS-DOS prompt.
arp -d 10.10.6.100
Wi-Fi CompactFlash cards contain their own MAC address, and changing them
changes the MAC address for the Wi-Fi enabled embedded application. PCs typically
time out the hardware translation cache after a few minutes, or when the interface is
restarted. However, it may be necessary to flush the cache manually if you are in a
hurry.
3. Do not hot-swap Wi-Fi CompactFlash cards. The interface and software driver are not
designed to allow hot-swapping.
4. The Wi-Fi CompactFlash Board in the Add-On Kits was designed to be used with
Wi-Fi CompactFlash cards. It has not been tested for compatibility with other types of
CompactFlash cards.