100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* Temperature sensor board driver for the USB boards which contain a temperature sensor.
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*/
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#ifndef __TEMPERATURE_H__
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#define __TEMPERATURE_H__
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/* Macros: */
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#if !defined(__DOXYGEN__)
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#define INCLUDE_FROM_BOARD_DRIVER
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#endif
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/* Includes: */
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#include <avr/pgmspace.h>
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#include "../AT90USBXXX/ADC.h"
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#include "../../Common/Common.h"
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#if !defined(BOARD)
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#error #error BOARD must be set in makefile to a value specified in BoardTypes.h.
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#elif (BOARD != BOARD_USBKEY) && (BOARD != BOARD_STK525) && (BOARD != BOARD_STK526)
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#error The selected board does not contain a temperature sensor.
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#endif
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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/** ADC channel number for the temperature sensor. */
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#define TEMP_ADC_CHANNEL 0
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/** Minimum returnable temperature from the Temperature_GetTemperature() function. */
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#define TEMP_MIN_TEMP TEMP_TABLE_OFFSET
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/** Maximum returnable temperature from the Temperature_GetTemperature() function. */
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#define TEMP_MAX_TEMP ((TEMP_TABLE_SIZE - 1) + TEMP_TABLE_OFFSET)
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/** Initializes the temperature sensor driver, including setting up the appropriate ADC channel.
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* This must be called before any other temperature sensor routines.
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*
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* The ADC itself (not the ADC channel) must be configured seperately before calling the temperature
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* sensor functions.
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*/
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#define Temperature_Init() ADC_SetupChannel(TEMP_ADC_CHANNEL);
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/* Function Prototypes: */
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/** Performs a complete ADC on the temperature sensor channel, and converts the result into a
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* valid temperature between TEMP_MIN_TEMP and TEMP_MAX_TEMP in degrees Celcius.
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*
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* \return Signed temperature in degrees Celcius
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*/
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int8_t Temperature_GetTemperature(void) ATTR_WARN_UNUSED_RESULT;
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/* Private Interface - For use in library only: */
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#if !defined(__DOXYGEN__)
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/* Macros: */
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#define TEMP_TABLE_SIZE (sizeof(Temperature_Lookup) / sizeof(Temperature_Lookup[0]))
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#define TEMP_TABLE_OFFSET -21
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#endif
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/* Disable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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}
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#endif
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#endif
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