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Communication power accounting: this module keeps track of the energy expenditure of individial communication activities, such as transmission or reception of individual packets or idle listening.

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adamdunkels 2009-03-01 20:32:03 +00:00
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commit 94c2c0ce85
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core/sys/compower.c Normal file
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/**
* \addtogroup compower
* @{
*/
/*
* Copyright (c) 2009, Swedish Institute of Computer Science.
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``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 INSTITUTE OR CONTRIBUTORS 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.
*
* This file is part of the Contiki operating system.
*
* $Id: compower.c,v 1.1 2009/03/01 20:32:03 adamdunkels Exp $
*/
/**
* \file
* Communication power accounting module
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "contiki-conf.h"
#include "sys/energest.h"
#include "sys/compower.h"
#include "net/rime/rimebuf.h"
struct compower_activity compower_idle_activity;
/*---------------------------------------------------------------------------*/
void
compower_init(void)
{
compower_clear(&compower_idle_activity);
}
/*---------------------------------------------------------------------------*/
void
compower_accumulate(struct compower_activity *e)
{
static uint32_t last_listen, last_transmit;
uint32_t listen, transmit;
listen = energest_type_time(ENERGEST_TYPE_LISTEN);
e->listen += listen - last_listen;
last_listen = listen;
transmit = energest_type_time(ENERGEST_TYPE_TRANSMIT);
e->transmit += transmit - last_transmit;
last_transmit = transmit;
}
/*---------------------------------------------------------------------------*/
void
compower_clear(struct compower_activity *e)
{
e->listen = e->transmit = 0;
}
/*---------------------------------------------------------------------------*/
void
compower_attrconv(struct compower_activity *e)
{
rimebuf_set_attr(RIMEBUF_ATTR_LISTEN_ENERGY, e->listen);
rimebuf_set_attr(RIMEBUF_ATTR_TRANSMIT_ENERGY, e->transmit);
}
/*---------------------------------------------------------------------------*/
void
compower_accumulate_attrs(struct compower_activity *e)
{
e->listen += rimebuf_attr(RIMEBUF_ATTR_LISTEN_ENERGY);
e->transmit += rimebuf_attr(RIMEBUF_ATTR_TRANSMIT_ENERGY);
}
/*---------------------------------------------------------------------------*/
/** @} */