Does the wifi shield have the ability to trigger an interrupt when some data arrives, or must it be polled?
Does it have any kind of buffer like a UART
but if its a no brainer that it needs the full attention of the CPU then I'll probably go the route of designing a special purpose wifi shield with its own uC on it.
Along these lines, does anyone know of an existing wifi shield with its own uC on it?
What else is the Arduino doing? If the Arduino is already busy a significant portion of the time, will it really have time to act as a web server, too?
QuoteAlong these lines, does anyone know of an existing wifi shield with its own uC on it?Take a look at the WiFi Bee. It's a Microchip WiFi module (as is on the WiShield) together with a ATmega328, something like a complete Arduino in the Bee format.http://www.seeedstudio.com/wiki/Wifi_Bee