WiiLAB Example Code - isNunchukButtonPressed

Note: MATLAB R2007a or greater is required for this code to run correctly.

Annotations

The isNunchukButtonPressed function allows the user to tell if a button on the Wiimote's nunchuk extension is currently being pressed.

Usage

isNunchukButtonPressed('[Button]');

* where [Button] is one of the following strings: C, Z

Return

isNunchukButtonPressed will return true (1) if the button is pressed and false (0) if it is not.

Example

The following snippet of code will execute the block inside the if statement, and 'C is pressed on the Nunchuk' will be displayed, if 'C' is pressed on the Nunchuk at the time of function call.

if ( isNunchukButtonPressed('C') )
    disp('C is pressed on the Nunchuk');
end

Raw Source Code

The source code is also available as a .m file download at the bottom of the page.

function [buttonPressed] = isNunchukButtonPressed(ButtonToCheck)
%   usage:      isButtonPressedNunchuk(ButtonToCheck)
%                   Possible Buttons :: C Z
%   purpose:    Tests to see if a button is being pressed
   
global wiimote;

wiimote.GetNunchukButtonsState();

% check if the button is pressed based on the ButtonToCheck input
switch(upper(ButtonToCheck))
    case 'C'
        buttonPressed = wiimote.Buttons.C;
    case 'Z'
        buttonPressed = wiimote.ButtonsZ;    
    otherwise
        buttonPressed = 0;
end
   

• isNunchukButtonPressed.m