Contiki-NG
light-sensor.c
1/*
2 * Copyright (c) 2005-2010, Swedish Institute of Computer Science
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 * This file is part of the Contiki operating system.
30 *
31 */
32
33#include "contiki.h"
34#include "lib/sensors.h"
35#include "dev/sky-sensors.h"
36#include "dev/light-sensor.h"
37#include "dev/potentiometer-sensor.h"
38
39/* Photodiode 1 (P64) on INCH_4 */
40/* Photodiode 2 (P65) on INCH_5 */
41/* Enric#define INPUT_CHANNEL ((1 << INCH_4) | (1 << INCH_5)) */
42#ifndef INPUT_CHANNEL
43#define INPUT_CHANNEL (1 << INCH_4)
44#endif
45
46#ifndef INPUT_REFERENCE
47#define INPUT_REFERENCE SREF_0
48#endif
49
50#ifdef POTENTIOMETER_MEM
51#define PHOTOSYNTHETIC_MEM POTENTIOMETER_MEM
52#define TOTAL_SOLAR_MEM POTENTIOMETER_MEM
53#else
54#define PHOTOSYNTHETIC_MEM ADC12MEM4
55#define TOTAL_SOLAR_MEM ADC12MEM4
56#endif
57
58
59const struct sensors_sensor light_sensor;
60
61/*---------------------------------------------------------------------------*/
62static int
63value(int type)
64{
65 switch(type) {
66 /* Photosynthetically Active Radiation. */
67 case LIGHT_SENSOR_PHOTOSYNTHETIC:
68 return PHOTOSYNTHETIC_MEM;
69
70 /* Total Solar Radiation. */
71 case LIGHT_SENSOR_TOTAL_SOLAR:
72 return TOTAL_SOLAR_MEM;
73 }
74 return 0;
75}
76/*---------------------------------------------------------------------------*/
77static int
78status(int type)
79{
80 return sky_sensors_status(INPUT_CHANNEL, type);
81}
82/*---------------------------------------------------------------------------*/
83static int
84configure(int type, int c)
85{
86 return sky_sensors_configure(INPUT_CHANNEL, INPUT_REFERENCE, type, c);
87}
88/*---------------------------------------------------------------------------*/
89SENSORS_SENSOR(light_sensor, "Light", value, configure, status);