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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core/sys/compower.c
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core/sys/compower.c
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/**
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* \addtogroup compower
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* @{
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*/
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/*
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* Copyright (c) 2009, 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: compower.c,v 1.1 2009/03/01 20:32:03 adamdunkels Exp $
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*/
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/**
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* \file
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* Communication power accounting module
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#include "contiki-conf.h"
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#include "sys/energest.h"
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#include "sys/compower.h"
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#include "net/rime/rimebuf.h"
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struct compower_activity compower_idle_activity;
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/*---------------------------------------------------------------------------*/
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void
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compower_init(void)
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{
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compower_clear(&compower_idle_activity);
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}
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/*---------------------------------------------------------------------------*/
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void
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compower_accumulate(struct compower_activity *e)
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{
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static uint32_t last_listen, last_transmit;
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uint32_t listen, transmit;
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listen = energest_type_time(ENERGEST_TYPE_LISTEN);
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e->listen += listen - last_listen;
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last_listen = listen;
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transmit = energest_type_time(ENERGEST_TYPE_TRANSMIT);
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e->transmit += transmit - last_transmit;
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last_transmit = transmit;
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}
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/*---------------------------------------------------------------------------*/
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void
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compower_clear(struct compower_activity *e)
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{
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e->listen = e->transmit = 0;
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}
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/*---------------------------------------------------------------------------*/
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void
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compower_attrconv(struct compower_activity *e)
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{
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rimebuf_set_attr(RIMEBUF_ATTR_LISTEN_ENERGY, e->listen);
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rimebuf_set_attr(RIMEBUF_ATTR_TRANSMIT_ENERGY, e->transmit);
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}
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/*---------------------------------------------------------------------------*/
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void
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compower_accumulate_attrs(struct compower_activity *e)
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{
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e->listen += rimebuf_attr(RIMEBUF_ATTR_LISTEN_ENERGY);
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e->transmit += rimebuf_attr(RIMEBUF_ATTR_TRANSMIT_ENERGY);
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}
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/*---------------------------------------------------------------------------*/
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/** @} */
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136
core/sys/compower.h
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136
core/sys/compower.h
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/** \addtogroup sys
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* @{ */
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/**
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* \defgroup compower Communication power accounting
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* @{
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*
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* The compower module accumulates power consumption information and
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* attributes it to communication activities. Examples of
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* communication activities are packet transmission, packet reception,
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* and idle listening.
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*
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*/
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/*
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* Copyright (c) 2009, 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: compower.h,v 1.1 2009/03/01 20:32:03 adamdunkels Exp $
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*/
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/**
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* \file
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* Header file for the communication power accounting module
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* \author
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* Adam Dunkels <adam@sics.se>
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*/
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#ifndef __COMPOWER_H__
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#define __COMPOWER_H__
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/**
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* \brief An activity record that contains power consumption information for a specific communication activity.
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*
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* This is a structure that holds power information about
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* a communication activity. It is an opaque structure
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* with no user-visible elements.
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*/
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struct compower_activity {
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uint32_t listen, transmit;
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};
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/**
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* \brief The default idle communication activity.
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*
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* This is the idle communication activity, to which all
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* energy that is not possible to attribute to individual
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* packets, is attributed. Examples include idle listening
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* for incoming packets and MAC-level beacon
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* transmissions.
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*/
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extern struct compower_activity compower_idle_activity;
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/**
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* \brief Initialize the communication power accounting module.
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*
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* This function initializes the communication power
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* accounting module. The function is called by the system
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* during boot-up.
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*/
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void compower_init(void);
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/**
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* \brief Accumulate power contumption for a communication activity
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* \param a A pointer to an activity structure.
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*
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* This function accumulates power consumption information
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* for a communication activity. The function typically is
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* called by a power-saving MAC protocol when the radio is
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* switched off, or when a packet is received or
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* transmitted.
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*
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*/
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void compower_accumulate(struct compower_activity *a);
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/**
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* \brief Clear power consumption information for a communication activity
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* \param a A pointer to an activity structure.
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*
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* This function clears any power contumption information
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* that has previously been accumulated in an activity
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* structure.
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*
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*/
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void compower_clear(struct compower_activity *a);
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/**
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* \brief Convert power contumption information to packet attributes
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* \param a A pointer to an activity structure.
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*
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* This function converts accumulated power consumption
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* information for a communication activity to packet
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* attributes (see \ref rimebufattr "packet attributes").
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*/
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void compower_attrconv(struct compower_activity *a);
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/**
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* \brief Accumulate power contumption for a communication activity based on energy data in packet attributes
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* \param a A pointer to an activity structure.
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*
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* This function accumulates power consumption information
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* for a communication activity from packet attributes
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* (see \ref rimebufattr "packet attributes").
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*/
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void compower_accumulate_attrs(struct compower_activity *a);
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#endif /* __COMPOWER_H__ */
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/** @} */
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/** @} */
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