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diff --git a/drivers/tsd/tsd.h b/drivers/tsd/tsd.h
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+/* ----------------------------------------------------------------------------
+ *         ATMEL Microcontroller Software Support 
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \unit
+///
+/// !!!Purpose
+/// 
+/// This unit provides a very powerful touchscreen driver which handles all the
+/// complexity. This includes touchscreen calibration, retrieving measurements,
+/// configuring the TSADC, etc.
+/// 
+/// !!!Usage
+/// 
+/// -# Call TSD_Initialize() whenever the touchscreen should start the
+///    calibration process (as it is done in the function).
+/// -# Declare a global TSD_PenPressed function anywhere in your code. This
+///    function will get called every time the pen is pressed on the screen.
+/// -# Declare a global TSD_PenMoved function, which will get called whenever
+///    the pen stays in contact with the screen but changes position.
+/// -# Declare a global TSD_PenReleased function, which will be invoked as the
+///    pen is lifted from the screen.
+//------------------------------------------------------------------------------
+
+#ifndef TSD_H
+#define TSD_H
+
+//------------------------------------------------------------------------------
+//         Headers
+//------------------------------------------------------------------------------
+
+#include "tsd_com.h"
+
+//------------------------------------------------------------------------------
+//         Global functions
+//------------------------------------------------------------------------------
+
+extern void TSD_Initialize(void *pLcdBuffer);
+
+extern unsigned char TSD_Calibrate(void *pLcdBuffer);
+
+extern void TSD_Reset(void);
+
+#ifdef at91sam3u
+extern void TSD_TimerHandler(void);
+#endif
+
+#endif //#ifndef TSD_H