temperature-sensor.c

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/*
 * Copyright (c) 2010, Swedish Institute of Computer Science.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the Institute nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS 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.
 *
 * @(#)$Id: temperature-sensor.c,v 1.1 2010/08/25 19:34:06 nifi Exp $
 */

/**
 * \file
 *         Sensor driver for reading the built-in temperature sensor in the CPU.
 * \author
 *         Adam Dunkels <adam@sics.se>
 *         Joakim Eriksson <joakime@sics.se>
 *         Niclas Finne <nfi@sics.se>
 */

#include "dev/temperature-sensor.h"
#include "dev/sky-sensors.h"
#include <io.h>

#define INPUT_CHANNEL      (1 << INCH_10)
#define INPUT_REFERENCE    SREF_1
#define TEMPERATURE_MEM    ADC12MEM10

const struct sensors_sensor temperature_sensor;

/*---------------------------------------------------------------------------*/
static int
value(int type)
{
  return TEMPERATURE_MEM;
}
/*---------------------------------------------------------------------------*/
static int
configure(int type, int c)
{
  return sky_sensors_configure(INPUT_CHANNEL, INPUT_REFERENCE, type, c);
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
  return sky_sensors_status(INPUT_CHANNEL, type);
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(temperature_sensor, TEMPERATURE_SENSOR,
               value, configure, status);