Contiki 2.6
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00001 /* 00002 * Copyright (c) 2005, Swedish Institute of Computer Science 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the Institute nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * This file is part of the Contiki operating system. 00030 * 00031 * @(#)$Id: radio-sensor.c,v 1.5 2010/02/08 00:00:45 nifi Exp $ 00032 */ 00033 00034 #include "contiki.h" 00035 #include "dev/radio-sensor.h" 00036 #include "dev/irq.h" 00037 #include "dev/tr1001.h" 00038 00039 const struct sensors_sensor radio_sensor; 00040 00041 unsigned int radio_sensor_signal; 00042 00043 /*---------------------------------------------------------------------------*/ 00044 static int 00045 irq(void) 00046 { 00047 radio_sensor_signal = ADC12MEM5; 00048 return 0; 00049 } 00050 /*---------------------------------------------------------------------------*/ 00051 static int 00052 value(int type) 00053 { 00054 switch(type) { 00055 case RADIO_SENSOR_LAST_PACKET: 00056 return tr1001_sstrength(); 00057 case RADIO_SENSOR_LAST_VALUE: 00058 default: 00059 return radio_sensor_signal; 00060 } 00061 } 00062 /*---------------------------------------------------------------------------*/ 00063 static int 00064 configure(int type, int value) 00065 { 00066 switch(type) { 00067 case SENSORS_HW_INIT: 00068 /* Initialization of ADC12 done by irq */ 00069 radio_sensor_signal = 0; 00070 return 1; 00071 case SENSORS_ACTIVE: 00072 if(value) { 00073 if(!irq_adc12_active(5)) { 00074 irq_adc12_activate(5, (INCH_5 + SREF_0), irq); 00075 } 00076 } else { 00077 irq_adc12_deactivate(5); 00078 radio_sensor_signal = 0; 00079 } 00080 return 1; 00081 } 00082 return 0; 00083 } 00084 /*---------------------------------------------------------------------------*/ 00085 static int 00086 status(int type) 00087 { 00088 switch(type) { 00089 case SENSORS_ACTIVE: 00090 case SENSORS_READY: 00091 return irq_adc12_active(5); 00092 } 00093 return 0; 00094 } 00095 /*---------------------------------------------------------------------------*/ 00096 SENSORS_SENSOR(radio_sensor, RADIO_SENSOR, 00097 value, configure, status);