contiki/platform/sensinode/dev/button-sensor.c
2012-03-23 14:41:07 +00:00

201 lines
5.8 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.
*/
/*
* Portions of this file build on button-sensor.c in platforms sky and esb
* This file contains ISRs: Keep it in the HOME bank.
*/
#include "dev/models.h"
#include "lib/sensors.h"
#include "dev/hwconf.h"
#include "dev/sensinode-sensors.h"
#if BUTTON_SENSOR_ON
static uint8_t p0ien;
static uint8_t p2ien;
static __data struct timer debouncetimer[2];
#ifdef MODEL_N740
HWCONF_PIN(BUTTON_1, 1, 0)
HWCONF_PORT_1_IRQ(BUTTON_1, 0)
HWCONF_PIN(BUTTON_2, 0, 4)
HWCONF_PORT_0_IRQ(BUTTON_2, 4)
#endif /* MODEL_N740 */
#ifdef MODEL_N711
HWCONF_PIN(BUTTON_1, 0, 6)
HWCONF_PORT_0_IRQ(BUTTON_1, 6)
HWCONF_PIN(BUTTON_2, 0, 7)
HWCONF_PORT_0_IRQ(BUTTON_2, 7)
#endif /* MODEL_N711 */
/*---------------------------------------------------------------------------*/
static
int value_b1(int type)
{
return BUTTON_1_READ() || !timer_expired(&debouncetimer[0]);
}
/*---------------------------------------------------------------------------*/
static
int status_b1(int type)
{
switch (type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return BUTTON_1_IRQ_ENABLED();
}
return 0;
}
/*---------------------------------------------------------------------------*/
static
int configure_b1(int type, int value)
{
switch(type) {
case SENSORS_HW_INIT:
/* Generates INT when pressed */
BUTTON_1_IRQ_EDGE_SELECTD();
BUTTON_1_SELECT();
BUTTON_1_MAKE_INPUT();
return 1;
case SENSORS_ACTIVE:
if(value) {
if(!BUTTON_1_IRQ_ENABLED()) {
timer_set(&debouncetimer[0], 0);
BUTTON_1_IRQ_FLAG_OFF();
BUTTON_1_ENABLE_IRQ();
}
} else {
BUTTON_1_DISABLE_IRQ();
}
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
static
int value_b2(int type)
{
return BUTTON_2_READ() || !timer_expired(&debouncetimer[1]);
}
/*---------------------------------------------------------------------------*/
static
int status_b2(int type)
{
switch (type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return BUTTON_2_IRQ_ENABLED();
}
return 0;
}
/*---------------------------------------------------------------------------*/
static
int configure_b2(int type, int value)
{
switch(type) {
case SENSORS_HW_INIT:
/* Generates INT when released */
/* BUTTON_2_IRQ_EDGE_SELECTD(); */
BUTTON_2_SELECT();
BUTTON_2_MAKE_INPUT();
return 1;
case SENSORS_ACTIVE:
if(value) {
if(!BUTTON_2_IRQ_ENABLED()) {
timer_set(&debouncetimer[1], 0);
BUTTON_2_IRQ_FLAG_OFF();
BUTTON_2_ENABLE_IRQ();
}
} else {
BUTTON_2_DISABLE_IRQ();
}
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. */
/* Check B1 for N711 */
#ifdef MODEL_N711
if(BUTTON_1_CHECK_IRQ()) {
if(timer_expired(&debouncetimer[0])) {
timer_set(&debouncetimer[0], CLOCK_SECOND / 4);
sensors_changed(&button_1_sensor);
}
}
#endif /* MODEL_N711 */
if(BUTTON_2_CHECK_IRQ()) {
if(timer_expired(&debouncetimer[1])) {
timer_set(&debouncetimer[1], CLOCK_SECOND / 4);
sensors_changed(&button_2_sensor);
}
}
P0IFG = 0;
IRCON_P0IF = 0;
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
EA = 1;
}
/*---------------------------------------------------------------------------*/
/* We only need this ISR for N740 */
#ifdef MODEL_N740
void
port_1_ISR(void) __interrupt (P1INT_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. This can only be B1 for N740 */
if(BUTTON_1_CHECK_IRQ()) {
if(timer_expired(&debouncetimer[0])) {
timer_set(&debouncetimer[0], CLOCK_SECOND / 4);
sensors_changed(&button_1_sensor);
}
}
P1IFG = 0;
IRCON2_P1IF = 0;
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
EA = 1;
}
#endif /* MODEL_N740 */
SENSORS_SENSOR(button_1_sensor, BUTTON_1_SENSOR, value_b1, configure_b1, status_b1);
SENSORS_SENSOR(button_2_sensor, BUTTON_2_SENSOR, value_b2, configure_b2, status_b2);
#endif /* BUTTON_SENSOR_ON */