contiki/platform/seedeye/dev/button-sensor.c

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/*
* Contiki SeedEye Platform project
*
* Copyright (c) 2012,
* Scuola Superiore Sant'Anna (http://www.sssup.it) and
* Consorzio Nazionale Interuniversitario per le Telecomunicazioni
* (http://www.cnit.it).
*
* All rights reserved.
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*
* 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.
*
*/
/**
* \addtogroup SeedEye Contiki SEEDEYE Platform
*
* @{
*/
/**
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* \file platform/seedeye/dev/button-sensor.c
* \brief Button Sensor
* \author Giovanni Pellerano <giovanni.pellerano@evilaliv3.org>
* \date 2012-04-24
*/
#include <dev/button-sensor.h>
#include <p32xxxx.h>
#include <pic32_irq.h>
#define button_read PORTDbits.RD5
const struct sensors_sensor button_sensor;
static struct timer debouncetimer;
static int status(int type);
static uint8_t sensor_status = 0;
ISR(_CHANGE_NOTICE_VECTOR)
{
ENERGEST_ON(ENERGEST_TYPE_IRQ);
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if(timer_expired(&debouncetimer)) {
timer_set(&debouncetimer, CLOCK_SECOND / 4);
sensors_changed(&button_sensor);
}
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IFS1CLR = _IFS1_CNIF_MASK;
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ENERGEST_OFF(ENERGEST_TYPE_IRQ);
}
/*---------------------------------------------------------------------------*/
void
button_press(void)
{
sensors_changed(&button_sensor);
}
/*---------------------------------------------------------------------------*/
static int
value(int type)
{
return button_read || !timer_expired(&debouncetimer);
}
/*---------------------------------------------------------------------------*/
static int
configure(int type, int value)
{
switch (type) {
case SENSORS_ACTIVE:
if(value) {
if(!status(SENSORS_ACTIVE)) {
timer_set(&debouncetimer, 0);
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TRISDbits.TRISD5 = 1;
CNCON = 0;
CNCONSET = 1 << _CNCON_ON_POSITION | 1 << _CNCON_SIDL_POSITION;
CNEN = 1 << _CNEN_CNEN14_POSITION;
CNPUE = 1 << _CNPUE_CNPUE14_POSITION;
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IEC1CLR = _IEC1_CNIE_MASK;
IFS1CLR = _IFS1_CNIF_MASK;
IPC6CLR = _IPC6_CNIP_MASK;
IPC6SET = 6 << _IPC6_CNIP_POSITION;
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IEC1SET = 1 << _IEC1_CNIE_POSITION;
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sensor_status = 1;
}
}
return 1;
}
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sensor_status = 0;
return 0;
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
return sensor_status;
}
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(button_sensor, BUTTON_SENSOR, value, configure, status);
/*---------------------------------------------------------------------------*/
/** @} */