106 lines
3.5 KiB
C
106 lines
3.5 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This file contains ISRs: Keep it in the HOME bank.
|
||
|
|
*/
|
||
|
|
#include "dev/port.h"
|
||
|
|
#include "dev/button-sensor.h"
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
#if BUTTON_SENSOR_ON
|
||
|
|
static __data struct timer debouncetimer;
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
static
|
||
|
|
int value(int type)
|
||
|
|
{
|
||
|
|
return BUTTON_READ() || !timer_expired(&debouncetimer);
|
||
|
|
}
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
static
|
||
|
|
int status(int type)
|
||
|
|
{
|
||
|
|
switch (type) {
|
||
|
|
case SENSORS_ACTIVE:
|
||
|
|
case SENSORS_READY:
|
||
|
|
return BUTTON_IRQ_ENABLED();
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
static
|
||
|
|
int configure(int type, int value)
|
||
|
|
{
|
||
|
|
switch(type) {
|
||
|
|
case SENSORS_HW_INIT:
|
||
|
|
P0INP |= 2; /* Tri-state */
|
||
|
|
BUTTON_IRQ_ON_PRESS();
|
||
|
|
BUTTON_FUNC_GPIO();
|
||
|
|
BUTTON_DIR_INPUT();
|
||
|
|
return 1;
|
||
|
|
case SENSORS_ACTIVE:
|
||
|
|
if(value) {
|
||
|
|
if(!BUTTON_IRQ_ENABLED()) {
|
||
|
|
timer_set(&debouncetimer, 0);
|
||
|
|
BUTTON_IRQ_FLAG_OFF();
|
||
|
|
BUTTON_IRQ_ENABLE();
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
BUTTON_IRQ_DISABLE();
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
void
|
||
|
|
port_0_isr(void) __interrupt(P0INT_VECTOR)
|
||
|
|
{
|
||
|
|
EA = 0;
|
||
|
|
ENERGEST_ON(ENERGEST_TYPE_IRQ);
|
||
|
|
|
||
|
|
/* This ISR is for the entire port. Check if the interrupt was caused by our
|
||
|
|
* button's pin. */
|
||
|
|
if(BUTTON_IRQ_CHECK()) {
|
||
|
|
if(timer_expired(&debouncetimer)) {
|
||
|
|
timer_set(&debouncetimer, CLOCK_SECOND / 8);
|
||
|
|
sensors_changed(&button_sensor);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
BUTTON_IRQ_FLAG_OFF();
|
||
|
|
|
||
|
|
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
|
||
|
|
EA = 1;
|
||
|
|
}
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
SENSORS_SENSOR(button_sensor, BUTTON_SENSOR, value, configure, status);
|
||
|
|
#endif /* BUTTON_SENSOR_ON */
|