102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
#include "lib/sensors.h"
|
|
#include "dev/hwconf.h"
|
|
#include "dev/button-sensor.h"
|
|
#include "isr_compat.h"
|
|
|
|
const struct sensors_sensor button_sensor;
|
|
|
|
static struct timer debouncetimer;
|
|
static int status(int type);
|
|
|
|
HWCONF_PIN(BUTTON, 2, 5);
|
|
HWCONF_IRQ(BUTTON, 2, 5);
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
ISR(PORT2, irq_p2)
|
|
{
|
|
if(BUTTON_CHECK_IRQ()) {
|
|
if(timer_expired(&debouncetimer)) {
|
|
timer_set(&debouncetimer, CLOCK_SECOND / 4);
|
|
sensors_changed(&button_sensor);
|
|
LPM4_EXIT;
|
|
}
|
|
}
|
|
P2IFG = 0x00;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
value(int type)
|
|
{
|
|
return BUTTON_READ() || !timer_expired(&debouncetimer);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
configure(int type, int c)
|
|
{
|
|
switch (type) {
|
|
case SENSORS_ACTIVE:
|
|
if (c) {
|
|
if(!status(SENSORS_ACTIVE)) {
|
|
timer_set(&debouncetimer, 0);
|
|
BUTTON_IRQ_EDGE_SELECTD();
|
|
|
|
BUTTON_SELECT();
|
|
BUTTON_MAKE_INPUT();
|
|
|
|
BUTTON_ENABLE_IRQ();
|
|
}
|
|
} else {
|
|
BUTTON_DISABLE_IRQ();
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static int
|
|
status(int type)
|
|
{
|
|
switch (type) {
|
|
case SENSORS_ACTIVE:
|
|
case SENSORS_READY:
|
|
return BUTTON_IRQ_ENABLED();
|
|
}
|
|
return 0;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
SENSORS_SENSOR(button_sensor, BUTTON_SENSOR,
|
|
value, configure, status);
|