contiki/platform/esb/dev/vib-sensor.c

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/*
* Copyright (c) 2005, Swedish Institute of Computer Science
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
* @(#)$Id: vib-sensor.c,v 1.2 2006/10/09 21:08:51 nifi Exp $
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*/
#include "contiki-esb.h"
const struct sensors_sensor vib_sensor;
static unsigned int vib;
static unsigned char flags;
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HWCONF_PIN(VIB, 1, 4);
HWCONF_IRQ(VIB, 1, 4);
/*---------------------------------------------------------------------------*/
static int
irq(void)
{
if(VIB_CHECK_IRQ()) {
++vib;
if(flags & VIB_ENABLE_EVENT) {
sensors_changed(&vib_sensor);
}
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return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static void
init(void)
{
vib = 0;
VIB_SELECT();
VIB_MAKE_INPUT();
}
/*---------------------------------------------------------------------------*/
static void
activate(void)
{
sensors_add_irq(&vib_sensor, VIB_IRQ_PORT());
VIB_ENABLE_IRQ();
}
/*---------------------------------------------------------------------------*/
static void
deactivate(void)
{
VIB_DISABLE_IRQ();
sensors_remove_irq(&vib_sensor, VIB_IRQ_PORT());
}
/*---------------------------------------------------------------------------*/
static int
active(void)
{
return VIB_IRQ_ENABLED();
}
/*---------------------------------------------------------------------------*/
static unsigned int
value(int type)
{
return vib;
}
/*---------------------------------------------------------------------------*/
static int
configure(int type, void *c)
{
if(c) {
flags |= type & 0xff;
} else {
flags &= ~type & 0xff;
}
return 1;
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}
/*---------------------------------------------------------------------------*/
static void *
status(int type)
{
return (void *) (((int) (flags & type)) & 0xff);
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}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(vib_sensor, VIB_SENSOR,
init, irq, activate, deactivate, active,
value, configure, status);