nes-proj/core/dev/radio.h

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/**
* \addtogroup dev
* @{
*/
/**
* \defgroup radio Radio API
*
* The radio API module defines a set of functions that a radio device
* driver must implement.
*
* @{
*/
/*
* Copyright (c) 2005, 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 radio API
* \author
* Adam Dunkels <adam@sics.se>
*/
#ifndef RADIO_H_
#define RADIO_H_
/**
* The structure of a device driver for a radio in Contiki.
*/
struct radio_driver {
int (* init)(void);
/** Prepare the radio with a packet to be sent. */
int (* prepare)(const void *payload, unsigned short payload_len);
/** Send the packet that has previously been prepared. */
int (* transmit)(unsigned short transmit_len);
/** Prepare & transmit a packet. */
int (* send)(const void *payload, unsigned short payload_len);
/** Read a received packet into a buffer. */
int (* read)(void *buf, unsigned short buf_len);
/** Perform a Clear-Channel Assessment (CCA) to find out if there is
a packet in the air or not. */
int (* channel_clear)(void);
/** Check if the radio driver is currently receiving a packet */
int (* receiving_packet)(void);
/** Check if the radio driver has just received a packet */
int (* pending_packet)(void);
/** Turn the radio on. */
int (* on)(void);
/** Turn the radio off. */
int (* off)(void);
};
/* Generic radio return values. */
enum {
RADIO_TX_OK,
RADIO_TX_ERR,
RADIO_TX_COLLISION,
RADIO_TX_NOACK,
};
#endif /* RADIO_H_ */
/** @} */
/** @} */