91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2005, 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.
|
|
*
|
|
*
|
|
* -----------------------------------------------------------------
|
|
*
|
|
* Author : Adam Dunkels, Joakim Eriksson, Niclas Finne
|
|
* Created : 2005-11-01
|
|
* Updated : $Date: 2010/02/08 00:00:45 $
|
|
* $Revision: 1.3 $
|
|
*/
|
|
|
|
#include "dev/temperature-sensor.h"
|
|
#include "dev/ds1629.h"
|
|
|
|
const struct sensors_sensor temperature_sensor;
|
|
static int active;
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
value(int type)
|
|
{
|
|
unsigned int temp;
|
|
signed int t;
|
|
|
|
t = ds1629_temperature();
|
|
temp = ((t / 128) * 50);
|
|
return temp;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
configure(int type, int value)
|
|
{
|
|
switch(type) {
|
|
case SENSORS_HW_INIT:
|
|
active = 0;
|
|
ds1629_init();
|
|
return 1;
|
|
case SENSORS_ACTIVE:
|
|
if(value) {
|
|
if(!active) {
|
|
active = 1;
|
|
ds1629_start();
|
|
}
|
|
} else {
|
|
active = 0;
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
status(int type)
|
|
{
|
|
switch(type) {
|
|
case SENSORS_ACTIVE:
|
|
case SENSORS_READY:
|
|
return active;
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
SENSORS_SENSOR(temperature_sensor, TEMPERATURE_SENSOR,
|
|
value, configure, status);
|