nes-proj/examples/rime/example-mesh.c

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/*
* Copyright (c) 2007, 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.
*
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* $Id: example-mesh.c,v 1.7 2010/01/15 10:24:35 nifi Exp $
*/
/**
* \file
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* An example of how the Mesh primitive can be used.
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "contiki.h"
#include "net/rime.h"
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#include "net/rime/mesh.h"
#include "dev/button-sensor.h"
#include "dev/leds.h"
#include <stdio.h>
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#include <string.h>
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#define MESSAGE "Hello"
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static struct mesh_conn mesh;
/*---------------------------------------------------------------------------*/
PROCESS(example_mesh_process, "Mesh example");
AUTOSTART_PROCESSES(&example_mesh_process);
/*---------------------------------------------------------------------------*/
static void
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sent(struct mesh_conn *c)
{
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printf("packet sent\n");
}
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static void
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timedout(struct mesh_conn *c)
{
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printf("packet timedout\n");
}
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static void
recv(struct mesh_conn *c, const rimeaddr_t *from, uint8_t hops)
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{
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printf("Data received from %d.%d: %.*s (%d)\n",
from->u8[0], from->u8[1],
packetbuf_datalen(), (char *)packetbuf_dataptr(), packetbuf_datalen());
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packetbuf_copyfrom(MESSAGE, strlen(MESSAGE));
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mesh_send(&mesh, from);
}
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const static struct mesh_callbacks callbacks = {recv, sent, timedout};
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(example_mesh_process, ev, data)
{
PROCESS_EXITHANDLER(mesh_close(&mesh);)
PROCESS_BEGIN();
mesh_open(&mesh, 132, &callbacks);
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SENSORS_ACTIVATE(button_sensor);
while(1) {
rimeaddr_t addr;
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/* Wait for button click before sending the first message. */
PROCESS_WAIT_EVENT_UNTIL(ev == sensors_event && data == &button_sensor);
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printf("Button clicked\n");
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/* Send a message to node number 1. */
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packetbuf_copyfrom(MESSAGE, strlen(MESSAGE));
addr.u8[0] = 1;
addr.u8[1] = 0;
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mesh_send(&mesh, &addr);
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/