97 lines
3.1 KiB
C
97 lines
3.1 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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* @(#)$Id: radio-sensor.c,v 1.5 2010/02/08 00:00:45 nifi Exp $
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*/
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#include "dev/radio-sensor.h"
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#include "dev/irq.h"
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#include "dev/tr1001.h"
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const struct sensors_sensor radio_sensor;
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unsigned int radio_sensor_signal;
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/*---------------------------------------------------------------------------*/
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static int
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irq(void)
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{
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radio_sensor_signal = ADC12MEM5;
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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static int
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value(int type)
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{
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switch(type) {
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case RADIO_SENSOR_LAST_PACKET:
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return tr1001_sstrength();
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case RADIO_SENSOR_LAST_VALUE:
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default:
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return radio_sensor_signal;
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}
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}
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/*---------------------------------------------------------------------------*/
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static int
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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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/* Initialization of ADC12 done by irq */
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radio_sensor_signal = 0;
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return 1;
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case SENSORS_ACTIVE:
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if(value) {
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if(!irq_adc12_active(5)) {
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irq_adc12_activate(5, (INCH_5 + SREF_0), irq);
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}
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} else {
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irq_adc12_deactivate(5);
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radio_sensor_signal = 0;
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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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static int
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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 irq_adc12_active(5);
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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SENSORS_SENSOR(radio_sensor, RADIO_SENSOR,
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value, configure, status);
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