nes-proj/platform/cc2530dk/dev/button-sensor.c
George Oikonomou c6ec22c4c8 cc2530: Added a method to maximise stack depth
This was oringinally contributed/reported/discussed/patched by
Philippe Retornaz (EPFL) but it's implemented
in a more configurable fashion here.
2012-09-07 17:32:53 +01:00

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.
*/
/*
* This file contains ISRs: Keep it in the HOME bank.
*/
#include "dev/port.h"
#include "dev/button-sensor.h"
#include "dev/watchdog.h"
/*---------------------------------------------------------------------------*/
static CC_AT_DATA struct timer debouncetimer;
/*---------------------------------------------------------------------------*/
/* Button 1 - SmartRF and cc2531 USB Dongle */
/*---------------------------------------------------------------------------*/
static
int value_b1(int type)
{
type;
return BUTTON_READ(1) || !timer_expired(&debouncetimer);
}
/*---------------------------------------------------------------------------*/
static
int status_b1(int type)
{
switch (type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return BUTTON_IRQ_ENABLED(1);
}
return 0;
}
/*---------------------------------------------------------------------------*/
static
int configure_b1(int type, int value)
{
switch(type) {
case SENSORS_HW_INIT:
#if !MODEL_CC2531
P0INP |= 2; /* Tri-state */
#endif
BUTTON_IRQ_ON_PRESS(1);
BUTTON_FUNC_GPIO(1);
BUTTON_DIR_INPUT(1);
return 1;
case SENSORS_ACTIVE:
if(value) {
if(!BUTTON_IRQ_ENABLED(1)) {
timer_set(&debouncetimer, 0);
BUTTON_IRQ_FLAG_OFF(1);
BUTTON_IRQ_ENABLE(1);
}
} else {
BUTTON_IRQ_DISABLE(1);
}
return 1;
}
return 0;
}
/*---------------------------------------------------------------------------*/
/* Button 2 - cc2531 USb Dongle only */
/*---------------------------------------------------------------------------*/
#if MODEL_CC2531
static
int value_b2(int type)
{
type;
return BUTTON_READ(2) || !timer_expired(&debouncetimer);
}
/*---------------------------------------------------------------------------*/
static
int status_b2(int type)
{
switch (type) {
case SENSORS_ACTIVE:
case SENSORS_READY:
return BUTTON_IRQ_ENABLED(2);
}
return 0;
}
/*---------------------------------------------------------------------------*/
static
int configure_b2(int type, int value)
{
switch(type) {
case SENSORS_HW_INIT:
BUTTON_IRQ_ON_PRESS(2);
BUTTON_FUNC_GPIO(2);
BUTTON_DIR_INPUT(2);
return 1;
case SENSORS_ACTIVE:
if(value) {
if(!BUTTON_IRQ_ENABLED(2)) {
timer_set(&debouncetimer, 0);
BUTTON_IRQ_FLAG_OFF(2);
BUTTON_IRQ_ENABLE(2);
}
} else {
BUTTON_IRQ_DISABLE(2);
}
return 1;
}
return 0;
}
#endif
/*---------------------------------------------------------------------------*/
/* ISRs */
/*---------------------------------------------------------------------------*/
/* avoid referencing bits, we don't call code which use them */
#pragma save
#if CC_CONF_OPTIMIZE_STACK_SIZE
#pragma exclude bits
#endif
#if MODEL_CC2531
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. */
if(BUTTON_IRQ_CHECK(1)) {
if(timer_expired(&debouncetimer)) {
timer_set(&debouncetimer, CLOCK_SECOND / 8);
sensors_changed(&button_1_sensor);
}
}
if(BUTTON_IRQ_CHECK(2)) {
if(timer_expired(&debouncetimer)) {
timer_set(&debouncetimer, CLOCK_SECOND / 8);
#if CC2531_CONF_B2_REBOOTS
watchdog_reboot();
#else /* General Purpose */
sensors_changed(&button_2_sensor);
#endif
}
}
BUTTON_IRQ_FLAG_OFF(1);
BUTTON_IRQ_FLAG_OFF(2);
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
EA = 1;
}
#else
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(1)) {
if(timer_expired(&debouncetimer)) {
timer_set(&debouncetimer, CLOCK_SECOND / 8);
sensors_changed(&button_sensor);
}
}
BUTTON_IRQ_FLAG_OFF(1);
ENERGEST_OFF(ENERGEST_TYPE_IRQ);
EA = 1;
}
#endif
#pragma restore
/*---------------------------------------------------------------------------*/
SENSORS_SENSOR(button_1_sensor, BUTTON_SENSOR, value_b1, configure_b1, status_b1);
#if MODEL_CC2531
SENSORS_SENSOR(button_2_sensor, BUTTON_SENSOR, value_b2, configure_b2, status_b2);
#endif