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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
+///
+/// Small set of functions for simple and portable LED usage.
+///
+/// !Usage
+///
+/// -# Configure one or more LEDs using LED_Configure and
+///    LED_ConfigureAll.
+/// -# Set, clear and toggle LEDs using LED_Set, LED_Clear and
+///    LED_Toggle.
+///
+/// LEDs are numbered starting from 0; the number of LEDs depend on the
+/// board being used. All the functions defined here will compile properly
+/// regardless of whether the LED is defined or not; they will simply
+/// return 0 when a LED which does not exist is given as an argument.
+/// Also, these functions take into account how each LED is connected on to
+/// board; thus, <LED_Set> might change the level on the corresponding pin
+/// to 0 or 1, but it will always light the LED on; same thing for the other
+/// methods.
+//------------------------------------------------------------------------------
+
+#ifndef LED_H
+#define LED_H
+
+//------------------------------------------------------------------------------
+//         Global Functions
+//------------------------------------------------------------------------------
+
+extern unsigned char LED_Configure(unsigned int led);
+
+extern unsigned char LED_Set(unsigned int led);
+
+extern unsigned char LED_Clear(unsigned int led);
+
+extern unsigned char LED_Toggle(unsigned int led);
+
+#endif //#ifndef LED_H
+