nes-proj/core/sys/compower.h

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/*
* 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.
*
*/
/**
* \file
* Header file for the communication power accounting module
* \author
* Adam Dunkels <adam@sics.se>
*/
/** \addtogroup sys
* @{ */
/**
* \defgroup compower Communication power accounting
* @{
*
* The compower module accumulates power consumption information and
* attributes it to communication activities. Examples of
* communication activities are packet transmission, packet reception,
* and idle listening.
*
*/
#ifndef COMPOWER_H_
#define COMPOWER_H_
/**
* \brief An activity record that contains power consumption information for a specific communication activity.
*
* This is a structure that holds power information about
* a communication activity. It is an opaque structure
* with no user-visible elements.
*/
struct compower_activity {
uint32_t listen, transmit;
};
/**
* \brief The default idle communication activity.
*
* This is the idle communication activity, to which all
* energy that is not possible to attribute to individual
* packets, is attributed. Examples include idle listening
* for incoming packets and MAC-level beacon
* transmissions.
*/
extern struct compower_activity compower_idle_activity;
/**
* \brief Initialize the communication power accounting module.
*
* This function initializes the communication power
* accounting module. The function is called by the system
* during boot-up.
*/
void compower_init(void);
/**
* \brief Accumulate power contumption for a communication activity
* \param a A pointer to an activity structure.
*
* This function accumulates power consumption information
* for a communication activity. The function typically is
* called by a power-saving MAC protocol when the radio is
* switched off, or when a packet is received or
* transmitted.
*
*/
void compower_accumulate(struct compower_activity *a);
/**
* \brief Clear power consumption information for a communication activity
* \param a A pointer to an activity structure.
*
* This function clears any power contumption information
* that has previously been accumulated in an activity
* structure.
*
*/
void compower_clear(struct compower_activity *a);
#endif /* COMPOWER_H_ */
/** @} */
/** @} */