Contiki 2.5
pir-sensor.c
1 /*
2  * Copyright (c) 2006, 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  * $Id: pir-sensor.c,v 1.2 2010/01/14 19:12:31 nifi Exp $
30  */
31 
32 #include "dev/pir-sensor.h"
33 #include "lib/simEnvChange.h"
34 
35 const struct simInterface pir_interface;
36 const struct sensors_sensor pir_sensor;
37 
38 // COOJA variables
39 char simPirChanged;
40 char simPirIsActive;
41 char simPirValue = 0;
42 
43 /*---------------------------------------------------------------------------*/
44 static int
45 value(int type)
46 {
47  return simPirValue;
48 }
49 /*---------------------------------------------------------------------------*/
50 static int
51 configure(int type, int c)
52 {
53  switch(type) {
54  case SENSORS_HW_INIT:
55  simPirIsActive = 0;
56  return 1;
57  case SENSORS_ACTIVE:
58  simPirIsActive = c;
59  return 1;
60  }
61  return 0;
62 }
63 /*---------------------------------------------------------------------------*/
64 static int
65 status(int type)
66 {
67  switch(type) {
68  case SENSORS_ACTIVE:
69  case SENSORS_READY:
70  return simPirIsActive;
71  }
72  return 0;
73 }
74 /*---------------------------------------------------------------------------*/
75 static void
76 doInterfaceActionsBeforeTick(void)
77 {
78  // Check if PIR value has changed
79  if (simPirIsActive && simPirChanged) {
80  simPirValue++;
81 
82  sensors_changed(&pir_sensor);
83  simPirChanged = 0;
84  }
85 }
86 /*---------------------------------------------------------------------------*/
87 static void
88 doInterfaceActionsAfterTick(void)
89 {
90 }
91 /*---------------------------------------------------------------------------*/
92 
93 SIM_INTERFACE(pir_interface,
94  doInterfaceActionsBeforeTick,
95  doInterfaceActionsAfterTick);
96 
97 SENSORS_SENSOR(pir_sensor, PIR_SENSOR,
98  value, configure, status);