111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/*
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* Copyright (c) 2005, Swedish Institute of Computer Science
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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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* This file is part of the Contiki operating system.
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*/
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/*
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* This file contains ISRs: Keep it in the HOME bank.
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*/
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#include "dev/port.h"
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#include "dev/button-sensor.h"
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/*---------------------------------------------------------------------------*/
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#if BUTTON_SENSOR_ON
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static __data struct timer debouncetimer;
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/*---------------------------------------------------------------------------*/
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static
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int 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
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int status(int type)
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{
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switch (type) {
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case SENSORS_ACTIVE:
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case SENSORS_READY:
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return BUTTON_IRQ_ENABLED();
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static
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int configure(int type, int value)
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{
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switch(type) {
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case SENSORS_HW_INIT:
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P0INP |= 2; /* Tri-state */
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BUTTON_IRQ_ON_PRESS();
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BUTTON_FUNC_GPIO();
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BUTTON_DIR_INPUT();
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return 1;
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case SENSORS_ACTIVE:
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if(value) {
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if(!BUTTON_IRQ_ENABLED()) {
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timer_set(&debouncetimer, 0);
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BUTTON_IRQ_FLAG_OFF();
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BUTTON_IRQ_ENABLE();
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}
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} else {
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BUTTON_IRQ_DISABLE();
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}
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return 1;
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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#if MODEL_CC2531
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void
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port_1_isr(void) __interrupt(P1INT_VECTOR)
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#else
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void
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port_0_isr(void) __interrupt(P0INT_VECTOR)
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#endif
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{
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EA = 0;
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ENERGEST_ON(ENERGEST_TYPE_IRQ);
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/* This ISR is for the entire port. Check if the interrupt was caused by our
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* button's pin. */
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if(BUTTON_IRQ_CHECK()) {
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if(timer_expired(&debouncetimer)) {
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timer_set(&debouncetimer, CLOCK_SECOND / 8);
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sensors_changed(&button_sensor);
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}
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}
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BUTTON_IRQ_FLAG_OFF();
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ENERGEST_OFF(ENERGEST_TYPE_IRQ);
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EA = 1;
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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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#endif /* BUTTON_SENSOR_ON */
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