e34eb54960
main ideas are: * Separates the Contiki low-layer network stack into four layers: network (e.g. sicslowpan / rime), Medium Access Control MAC (e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and radio (e.g. cc2420). * Introduces a new way to configure the network stack. Four #defines that specify what mechanism/protocol/driver to use at the four layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC, NETSTACK_CONF_RADIO. * Adds a callback mechanism to inform the MAC and network layers about the fate of a transmitted packet: if the packet was not possible to transmit, the cause of the failure is reported, and if the packets was successfully transmitted, the number of tries before it was finally transmitted is reported. * NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc, which can be used when MAC and RDC functionality is not needed. * Extends the radio API with three new functions that enable more efficient radio duty cycling protocols: channel check, pending packet, and receiving packet. * New initialization mechanism, which takes advantage of the NETSTACK #defines.
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/**
|
|
* \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.
|
|
*
|
|
* $Id: radio.h,v 1.7 2010/02/18 21:48:39 adamdunkels Exp $
|
|
*/
|
|
|
|
/**
|
|
* \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,
|
|
};
|
|
|
|
#endif /* __RADIO_H__ */
|
|
|
|
|
|
/** @} */
|
|
/** @} */
|