164 lines
4.7 KiB
C
164 lines
4.7 KiB
C
/**
|
|
* \addtogroup rimenbh
|
|
* @{
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2006, 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: nbh.c,v 1.1 2007/11/13 21:01:54 adamdunkels Exp $
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
* Neighborhood discovery
|
|
* \author
|
|
* Adam Dunkels <adam@sics.se>
|
|
*/
|
|
|
|
#include "contiki.h"
|
|
|
|
#include "net/rime.h"
|
|
#include "net/rime/neighbor.h"
|
|
#include "net/rime/nf.h"
|
|
#include "net/rime/nbh.h"
|
|
|
|
#include "dev/radio-sensor.h"
|
|
|
|
#if NETSIM
|
|
#include "ether.h"
|
|
#endif
|
|
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stddef.h>
|
|
|
|
struct adv_msg {
|
|
u16_t val;
|
|
};
|
|
|
|
#define SINK 0
|
|
#define HOPCOUNT_MAX TREE_MAX_DEPTH
|
|
|
|
#define MAX_HOPLIM 10
|
|
|
|
#define MAX_INTERVAL CLOCK_SECOND * 20
|
|
#define MIN_INTERVAL CLOCK_SECOND * 10
|
|
|
|
#define DEBUG 0
|
|
#if DEBUG
|
|
#include <stdio.h>
|
|
#define PRINTF(...) printf(__VA_ARGS__)
|
|
#else
|
|
#define PRINTF(...)
|
|
#endif
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
send_adv(struct nbh_conn *c, clock_time_t interval)
|
|
{
|
|
struct adv_msg *hdr;
|
|
|
|
rimebuf_clear();
|
|
rimebuf_set_datalen(sizeof(struct adv_msg));
|
|
hdr = rimebuf_dataptr();
|
|
hdr->val = c->val;
|
|
ibc_send(&c->c);
|
|
if(c->u->sent) {
|
|
c->u->sent(c);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
adv_packet_received(struct ibc_conn *ibc, rimeaddr_t *from)
|
|
{
|
|
struct nbh_conn *c = (struct nbh_conn *)ibc;
|
|
struct adv_msg *msg = rimebuf_dataptr();
|
|
struct neighbor *n;
|
|
|
|
PRINTF("%d.%d: adv_packet_received from %d.%d with val %d\n",
|
|
rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1],
|
|
from->u8[0], from->u8[1], msg->val);
|
|
|
|
/* n = neighbor_find(from); */
|
|
|
|
/* if(n == NULL) { */
|
|
/* neighbor_add(from, msg->val, radio_sensor.value(1)); */
|
|
/* } else { */
|
|
/* neighbor_update(n, msg->val, radio_sensor.value(1)); */
|
|
/* PRINTF("%d.%d: updating neighbor %d.%d, radio sensor %d, hops %d\n", */
|
|
/* rimeaddr_node_addr.u8[0], rimeaddr_node_addr.u8[1], */
|
|
/* n->addr.u8[0], n->addr.u8[1], */
|
|
/* radio_sensor.value(1), msg->val); */
|
|
/* } */
|
|
|
|
if(c->u->recv) {
|
|
c->u->recv(c, from, msg->val);
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
send_timer(void *ptr)
|
|
{
|
|
struct nbh_conn *tc = ptr;
|
|
|
|
send_adv(tc, MAX_INTERVAL / 2);
|
|
ctimer_set(&tc->t,
|
|
MIN_INTERVAL + random_rand() % (MAX_INTERVAL - MIN_INTERVAL),
|
|
send_timer, tc);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static const struct ibc_callbacks ibc_callbacks =
|
|
{adv_packet_received};
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
nbh_open(struct nbh_conn *c, u16_t channel,
|
|
const struct nbh_callbacks *cb)
|
|
{
|
|
ibc_open(&c->c, channel, &ibc_callbacks);
|
|
c->u = cb;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
nbh_close(struct nbh_conn *c)
|
|
{
|
|
ibc_close(&c->c);
|
|
ctimer_stop(&c->t);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
nbh_start(struct nbh_conn *c, u16_t val)
|
|
{
|
|
c->val = val;
|
|
ctimer_set(&c->t, random_rand() % MIN_INTERVAL, send_timer, c);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/** @} */
|