osd-contiki/platform/mbxxx/dev/contact-sensor.c

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/**
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* \addtogroup mbxxx-platform
*
* @{
*/
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/*
* Copyright (c) 2010, STMicroelectronics.
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
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* This file is part of the Contiki OS
*
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*/
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/*---------------------------------------------------------------------------*/
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/**
* \file
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* Contact sensor.
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* \author
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* Stefano Pascali <stefano.pascali@st.com>
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* Marco Grella <marco.grella@st.com>
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*/
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/*---------------------------------------------------------------------------*/
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#include PLATFORM_HEADER
#include BOARD_HEADER
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#include "hal/error.h"
#include "hal/hal.h"
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#include "dev/leds.h"
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#include "dev/contact-sensor.h"
void halIrqAIsr(void);
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static void
init(void)
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{
//PC0 configuration: push-pull output
halGpioConfig(PORTC_PIN(0), GPIOCFG_OUT);
GPIO_PCSET |= PC0;
//PB0 (IRQA)configuration: input Pull Down.
//halGpioConfig(PORTB_PIN(0), GPIOCFG_IN_PUD);
//GPIO_PBOUT &= ~PB0;
//PB0 (IRQA)configuration: input Pull Down.
halGpioConfig(PORTB_PIN(0), GPIOCFG_IN);
//configure IRQA mode: Rising and Falling edge triggered, digital filter enabled
// GPIO_INTCFGA =0x00000160;
GPIO_INTCFGA = GPIO_INTCFGA_RESET;
GPIO_INTCFGA|=GPIO_INTFILT;
GPIO_INTCFGA|=(0x03 <<GPIO_INTMOD_BIT);
halIrqAIsr();
//Enable IRQA interrupt
INT_CFGSET = INT_IRQA;
// printf("\r\n[Contact Sensor] Initialization Done\r\n");
}/* end switch_init */
/* :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
/* :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: */
void halIrqAIsr(void)
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{
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//Clear Interrupt Pending Bit
INT_GPIOFLAG = INT_IRQAFLAG;
if ((GPIO_PBIN & (1)) == 0){
leds_on(LEDS_RED);
leds_off(LEDS_GREEN);
}else{
leds_on(LEDS_GREEN);
leds_off(LEDS_RED);
// switch_closed=TRUE;
}
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}
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/*---------------------------------------------------------------------------*/
static int
value(int type)
{
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//printf("[Contact Sensor] Value=%d\r\n", GPIO_PBIN & (1));
return (GPIO_PBIN & (1));
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}
/*---------------------------------------------------------------------------*/
static int
configure(int type, int value)
{
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switch(type){
case SENSORS_HW_INIT:
init();
return 1;
case SENSORS_ACTIVE:
return 1;
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}
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return 0;
}
/*---------------------------------------------------------------------------*/
static int
status(int type)
{
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switch(type) {
case SENSORS_READY:
return 1;
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}
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return 0;
}
/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(contact_sensor, CONTACT_SENSOR,
value, configure, status);
/** @} */