Contiki-NG
potentiometer-sensor.c
1/*
2 * Copyright (c) 2011 Zolertia(TM) is a trademark by Advancare,SL
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the Institute nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *
30 * -----------------------------------------------------------------
31 *
32 * Author : Enric M. Calvo (based on work by A. Dunkels, J. Eriksson, N. Finne)
33 * Created : 2011-02-22
34 * $Revision: 1.0 $
35 */
36
37#include "dev/potentiometer-sensor.h"
38#include "dev/sky-sensors.h"
39#include "contiki.h"
40
41/* Configure ADC12_2 to sample channel 11 (voltage) and use */
42/* the Vref+ as reference (SREF_1) since it is a stable reference */
43#define INPUT_CHANNEL (1 << INCH_4)
44#define INPUT_REFERENCE SREF_0
45#define POTENTIOMETER_MEM ADC12MEM4
46
47const struct sensors_sensor potentiometer_sensor;
48/*---------------------------------------------------------------------------*/
49static int
50value(int type)
51{
52 return POTENTIOMETER_MEM;
53}
54/*---------------------------------------------------------------------------*/
55static int
56configure(int type, int c)
57{
58 return sky_sensors_configure(INPUT_CHANNEL, INPUT_REFERENCE, type, c);
59}
60/*---------------------------------------------------------------------------*/
61static int
62status(int type)
63{
64 return sky_sensors_status(INPUT_CHANNEL, type);
65}
66/*---------------------------------------------------------------------------*/
67SENSORS_SENSOR(potentiometer_sensor, POTENTIOMETER_SENSOR, value, configure, status);