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+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2012.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, provided that the above copyright notice appear in
+  all copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+/** \file
+ *  \brief NTC Temperature Sensor board hardware driver.
+ *
+ *  Master include file for the board temperature sensor driver, for the USB boards which contain a temperature sensor.
+ */
+
+/** \ingroup Group_BoardDrivers
+ *  \defgroup Group_Temperature Temperature Sensor Driver - LUFA/Drivers/Board/Temperature.h
+ *  \brief NTC Temperature Sensor board hardware driver.
+ *
+ *  \section Sec_Dependencies Module Source Dependencies
+ *  The following files must be built with any user project that uses this module:
+ *    - LUFA/Drivers/Board/Temperature.c <i>(Makefile source module name: LUFA_SRC_TEMPERATURE)</i>
+ *
+ *  \section Sec_ModDescription Module Description
+ *  Temperature sensor driver. This provides an easy to use interface for the hardware temperature sensor located
+ *  on many boards. It provides an interface to configure the sensor and appropriate ADC channel, plus read out the
+ *  current temperature in degrees C. It is designed for and will only work with the temperature sensor located on the
+ *  official Atmel USB AVR boards, as each sensor has different characteristics.
+ *
+ *  \section Sec_ExampleUsage Example Usage
+ *  The following snippet is an example of how this module may be used within a typical
+ *  application.
+ *
+ *  \code
+ *      // Initialize the ADC and board temperature sensor drivers before first use
+ *      ADC_Init(ADC_FREE_RUNNING | ADC_PRESCALE_128);
+ *      Temperature_Init();
+ *      
+ *      // Display converted temperature in degrees Celsius
+ *      printf("Current Temperature: %d Degrees\r\n", Temperature_GetTemperature());
+ *  \endcode
+ *
+ *  @{
+ */
+
+#ifndef __TEMPERATURE_H__
+#define __TEMPERATURE_H__
+
+	/* Includes: */
+		#include "../../Common/Common.h"
+
+	/* Preprocessor Checks: */
+		#if ((BOARD == BOARD_USBKEY) || (BOARD == BOARD_STK525) || \
+		     (BOARD == BOARD_STK526) || (BOARD == BOARD_EVK527))
+			#define TEMPERATURE_SENSOR_DRIVER_COMPATIBLE
+		#endif
+		
+		#if !defined(__INCLUDE_FROM_TEMPERATURE_C) && !defined(TEMPERATURE_SENSOR_DRIVER_COMPATIBLE)
+			#error The selected board does not contain a compatible temperature sensor.
+		#endif
+
+	#if defined(TEMPERATURE_SENSOR_DRIVER_COMPATIBLE)
+
+	/* Includes: */
+		#include "../Peripheral/ADC.h"
+
+	/* Enable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			extern "C" {
+		#endif
+
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** ADC channel number for the temperature sensor. */
+			#define TEMP_ADC_CHANNEL       0
+
+			/** ADC channel MUX mask for the temperature sensor. */
+			#define TEMP_ADC_CHANNEL_MASK  ADC_CHANNEL0
+
+			/** Size of the temperature sensor lookup table, in lookup values */
+			#define TEMP_TABLE_SIZE        120
+
+			/** Minimum returnable temperature from the \ref Temperature_GetTemperature() function. */
+			#define TEMP_MIN_TEMP          TEMP_TABLE_OFFSET_DEGREES
+
+			/** Maximum returnable temperature from the \ref Temperature_GetTemperature() function. */
+			#define TEMP_MAX_TEMP          ((TEMP_TABLE_SIZE - 1) + TEMP_TABLE_OFFSET_DEGREES)
+
+		/* Inline Functions: */
+			/** Initializes the temperature sensor driver, including setting up the appropriate ADC channel.
+			 *  This must be called before any other temperature sensor routines.
+			 *
+			 *  \pre The ADC itself (not the ADC channel) must be configured separately before calling the
+			 *       temperature sensor functions.
+			 */
+			static inline void Temperature_Init(void) ATTR_ALWAYS_INLINE;
+			static inline void Temperature_Init(void)
+			{
+				ADC_SetupChannel(TEMP_ADC_CHANNEL);
+			}
+
+		/* Function Prototypes: */
+			/** Performs a complete ADC on the temperature sensor channel, and converts the result into a
+			 *  valid temperature between \ref TEMP_MIN_TEMP and \ref TEMP_MAX_TEMP in degrees Celsius.
+			 *
+			 *  \return Signed temperature value in degrees Celsius.
+			 */
+			int8_t Temperature_GetTemperature(void) ATTR_WARN_UNUSED_RESULT;
+
+	/* Private Interface - For use in library only: */
+	#if !defined(__DOXYGEN__)
+		/* Macros: */
+			#define TEMP_TABLE_OFFSET_DEGREES   -21
+	#endif
+
+	/* Disable C linkage for C++ Compilers: */
+		#if defined(__cplusplus)
+			}
+		#endif
+
+	#endif
+	
+#endif
+
+/** @} */
+