Contiki 2.5
vib-sensor.c
1 /*
2  * Copyright (c) 2005, 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  * @(#)$Id: vib-sensor.c,v 1.5 2010/02/08 00:00:45 nifi Exp $
32  */
33 
34 #include "dev/vib-sensor.h"
35 #include "dev/irq.h"
36 #include "dev/hwconf.h"
37 
38 const struct sensors_sensor vib_sensor;
39 
40 static unsigned int vib;
41 
42 #define VIB_IRQ() 4
43 HWCONF_PIN(VIB, 1, VIB_IRQ());
44 HWCONF_IRQ(VIB, 1, VIB_IRQ());
45 
46 /*---------------------------------------------------------------------------*/
47 static int
48 irq(void)
49 {
50  ++vib;
51  sensors_changed(&vib_sensor);
52  return 1;
53 }
54 /*---------------------------------------------------------------------------*/
55 static int
56 value(int type)
57 {
58  return vib;
59 }
60 /*---------------------------------------------------------------------------*/
61 static int
62 configure(int type, int value)
63 {
64  switch(type) {
65  case SENSORS_HW_INIT:
66  vib = 0;
67  VIB_SELECT();
68  VIB_MAKE_INPUT();
69  return 1;
70  case SENSORS_ACTIVE:
71  if(value) {
72  if(!VIB_IRQ_ENABLED()) {
73  irq_port1_activate(VIB_IRQ(), irq);
74  VIB_ENABLE_IRQ();
75  }
76  } else {
77  VIB_DISABLE_IRQ();
78  irq_port1_deactivate(VIB_IRQ());
79  }
80  return 1;
81  }
82  return 0;
83 }
84 /*---------------------------------------------------------------------------*/
85 static int
86 status(int type)
87 {
88  switch(type) {
89  case SENSORS_ACTIVE:
90  case SENSORS_READY:
91  return VIB_IRQ_ENABLED();
92  }
93  return 0;
94 }
95 /*---------------------------------------------------------------------------*/
96 SENSORS_SENSOR(vib_sensor, VIB_SENSOR,
97  value, configure, status);