The ReadColorSensor function reads the color currently being 'seen' by the NXT color sensor. (Note: brick firmware 1.28 or greater is required for this function)
The input parameter should be an NXT input port number between 1 and 4 (which the color sensor is plugged into).
The mode parameter should be one of the following values:
If the mode ColorDetect is chosen, then the returned values will be a number between 1 and 6 which represent the following colors: black, blue, green, yellow, red, white.
You can use the ToColorName function to convert from these six values to a color name
If any of the other modes are chosen, then the result will be a color intensity value between 0 and 1023.
val = nxt.ReadColorSensor( input, mode );
function OnStart() { nxt = app.CreateNxt(); app.SetMenu( "Connect,Sense Color" ); } function OnMenu( name ) { if( name=="Connect" ) nxt.ShowDevices(); else if( name=="Sense Color" ) { clr = nxt.ReadColorSensor( 3, "ColorDetect" ); app.ShowPopup( nxt.ToColorName( clr ) ); } }