Contiki 2.6

pir-sensor.c

00001 /*
00002  * Copyright (c) 2006, 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  * $Id: pir-sensor.c,v 1.2 2010/01/14 19:12:31 nifi Exp $
00030  */
00031 
00032 #include "dev/pir-sensor.h"
00033 #include "lib/simEnvChange.h"
00034 
00035 const struct simInterface pir_interface;
00036 const struct sensors_sensor pir_sensor;
00037 
00038 // COOJA variables
00039 char simPirChanged;
00040 char simPirIsActive;
00041 char simPirValue = 0;
00042 
00043 /*---------------------------------------------------------------------------*/
00044 static int
00045 value(int type)
00046 {
00047   return simPirValue;
00048 }
00049 /*---------------------------------------------------------------------------*/
00050 static int
00051 configure(int type, int c)
00052 {
00053   switch(type) {
00054   case SENSORS_HW_INIT:
00055     simPirIsActive = 0;
00056     return 1;
00057   case SENSORS_ACTIVE:
00058     simPirIsActive = c;
00059     return 1;
00060   }
00061   return 0;
00062 }
00063 /*---------------------------------------------------------------------------*/
00064 static int
00065 status(int type)
00066 {
00067   switch(type) {
00068   case SENSORS_ACTIVE:
00069   case SENSORS_READY:
00070     return simPirIsActive;
00071   }
00072   return 0;
00073 }
00074 /*---------------------------------------------------------------------------*/
00075 static void
00076 doInterfaceActionsBeforeTick(void)
00077 {
00078   // Check if PIR value has changed
00079   if (simPirIsActive && simPirChanged) {
00080     simPirValue++;
00081 
00082     sensors_changed(&pir_sensor);
00083     simPirChanged = 0;
00084   }
00085 }
00086 /*---------------------------------------------------------------------------*/
00087 static void
00088 doInterfaceActionsAfterTick(void)
00089 {
00090 }
00091 /*---------------------------------------------------------------------------*/
00092 
00093 SIM_INTERFACE(pir_interface,
00094         doInterfaceActionsBeforeTick,
00095         doInterfaceActionsAfterTick);
00096 
00097 SENSORS_SENSOR(pir_sensor, PIR_SENSOR,
00098                value, configure, status);