139 lines
3.9 KiB
C
139 lines
3.9 KiB
C
/*
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* Contiki SeedEye Platform project
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*
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* Copyright (c) 2012,
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* Scuola Superiore Sant'Anna (http://www.sssup.it) and
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* Consorzio Nazionale Interuniversitario per le Telecomunicazioni
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* (http://www.cnit.it).
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/**
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* \addtogroup SeedEye Contiki SEEDEYE Platform
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*
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* @{
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*/
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/**
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* \file button-sensor.c
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* \brief Button Sensor
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* \author Giovanni Pellerano <giovanni.pellerano@evilaliv3.org>
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* \date 2012-04-24
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*/
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#include <dev/button-sensor.h>
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#include <p32xxxx.h>
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#include <pic32_irq.h>
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#define button_read PORTDbits.RD5
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const struct sensors_sensor button_sensor;
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static struct timer debouncetimer;
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static int status(int type);
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static uint8_t sensor_status = 0;
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ISR(_CHANGE_NOTICE_VECTOR)
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{
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ENERGEST_ON(ENERGEST_TYPE_IRQ);
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if(timer_expired(&debouncetimer)) {
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timer_set(&debouncetimer, CLOCK_SECOND / 4);
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sensors_changed(&button_sensor);
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}
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IFS1CLR = _IFS1_CNIF_MASK;
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ENERGEST_OFF(ENERGEST_TYPE_IRQ);
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}
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/*---------------------------------------------------------------------------*/
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void
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button_press(void)
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{
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sensors_changed(&button_sensor);
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}
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/*---------------------------------------------------------------------------*/
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static int
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value(int type)
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{
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return button_read || !timer_expired(&debouncetimer);
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}
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/*---------------------------------------------------------------------------*/
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static int
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configure(int type, int value)
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{
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switch (type) {
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case SENSORS_ACTIVE:
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if(value) {
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if(!status(SENSORS_ACTIVE)) {
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timer_set(&debouncetimer, 0);
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TRISDbits.TRISD5 = 1;
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CNCON = 0;
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CNCONSET = 1 << _CNCON_ON_POSITION | 1 << _CNCON_SIDL_POSITION;
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CNEN = 1 << _CNEN_CNEN14_POSITION;
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CNPUE = 1 << _CNPUE_CNPUE14_POSITION;
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IEC1CLR = _IEC1_CNIE_MASK;
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IFS1CLR = _IFS1_CNIF_MASK;
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IPC6CLR = _IPC6_CNIP_MASK;
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IPC6SET = 6 << _IPC6_CNIP_POSITION;
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IEC1SET = 1 << _IEC1_CNIE_POSITION;
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sensor_status = 1;
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}
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}
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return 1;
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}
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sensor_status = 0;
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static int
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status(int type)
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{
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return sensor_status;
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(button_sensor, BUTTON_SENSOR, value, configure, status);
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/*---------------------------------------------------------------------------*/
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/** @} */
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