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--- built_in:nxt_readcolorsensor [2015/03/09 16:05]
octazid created
+++ built_in:nxt_readcolorsensor [2015/03/22 02:35]
@@ Line 1: / Line 1: @@
-====== ReadColorSensor ======
-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:
-  * "ColorDetect"
-  * "LightSense"
-  * "RedSense"
-  * "GreenSense"
-  * "BlueSense"
-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.
-<code>val = nxt.ReadColorSensor( input, mode );</code>
-====Example - Sense color on port 3====
-<code javascript>
-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 ) );
-  }
-}
-</code>

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