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 
38 /* Photodiode 1 (P64) on INCH_4 */
39 /* Photodiode 2 (P65) on INCH_5 */
40 #define INPUT_CHANNEL ((1 << INCH_4) | (1 << INCH_5))
41 #define INPUT_REFERENCE SREF_0
42 #define PHOTOSYNTHETIC_MEM ADC12MEM4
43 #define TOTAL_SOLAR_MEM ADC12MEM5
44 
45 const struct sensors_sensor light_sensor;
46 
47 /*---------------------------------------------------------------------------*/
48 static int
49 value(int type)
50 {
51  switch(type) {
52  /* Photosynthetically Active Radiation. */
53  case LIGHT_SENSOR_PHOTOSYNTHETIC:
54  return PHOTOSYNTHETIC_MEM;
55 
56  /* Total Solar Radiation. */
57  case LIGHT_SENSOR_TOTAL_SOLAR:
58  return TOTAL_SOLAR_MEM;
59  }
60  return 0;
61 }
62 /*---------------------------------------------------------------------------*/
63 static int
64 status(int type)
65 {
66  return sky_sensors_status(INPUT_CHANNEL, type);
67 }
68 /*---------------------------------------------------------------------------*/
69 static int
70 configure(int type, int c)
71 {
72  return sky_sensors_configure(INPUT_CHANNEL, INPUT_REFERENCE, type, c);
73 }
74 /*---------------------------------------------------------------------------*/
75 SENSORS_SENSOR(light_sensor, "Light", value, configure, status);