I know that there is a WiiClassic Contoller code up on Arudino playground, but it doens't work. What changes do I need to make to make it works?
"Doesn't work" is not very specific. What do you have, what have you read, what did you try, what result did you get?
Cannot compile.
The original version of the code treat it as a class. However, the header file that it utilize does not even have a constructor.
You can refer it here:
http://www.arduino.cc/playground/Main/WiiClassicController
With the newer versions of Arduino you have to include the following to use constants and other functions:
#include <WProgram.h>
Put that at the top of the code and it should compile fine.
Torin