osd-contiki/examples/rime/example-collect.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.
*
* $Id: example-collect.c,v 1.7 2009/03/10 14:36:48 zhitao Exp $
*/
/**
* \file
* Example of how the collect primitive works.
* \author
* Adam Dunkels <adam@sics.se>
*/
#include "contiki.h"
#include "lib/random.h"
#include "net/rime.h"
#include "net/rime/collect.h"
#include "net/rime/neighbor.h"
#include "dev/leds.h"
#include "dev/button-sensor.h"
#include <stdio.h>
static struct collect_conn tc;
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/*---------------------------------------------------------------------------*/
PROCESS(example_collect_process, "Test collect process");
AUTOSTART_PROCESSES(&example_collect_process);
/*---------------------------------------------------------------------------*/
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static void
recv(const rimeaddr_t *originator, uint8_t seqno, uint8_t hops)
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{
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printf("Sink got message from %d.%d, seqno %d, hops %d: len %d '%s'\n",
originator->u8[0], originator->u8[1],
seqno, hops,
rimebuf_datalen(),
(char *)rimebuf_dataptr());
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}
/*---------------------------------------------------------------------------*/
static const struct collect_callbacks callbacks = { recv };
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/*---------------------------------------------------------------------------*/
PROCESS_THREAD(example_collect_process, ev, data)
{
PROCESS_BEGIN();
collect_open(&tc, 128, &callbacks);
while(1) {
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static struct etimer et;
uint16_t tmp;
/* Send a packet every 16 seconds; first wait 8 seconds, than a
random time between 0 and 8 seconds. */
etimer_set(&et, CLOCK_SECOND * 16 + random_rand() % (CLOCK_SECOND * 16));
PROCESS_WAIT_EVENT();
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if(etimer_expired(&et)) {
while(tc.forwarding) {
PROCESS_PAUSE();
}
printf("Sending\n");
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rimebuf_clear();
rimebuf_set_datalen(sprintf(rimebuf_dataptr(),
"%s", "Hello") + 1);
collect_send(&tc, 4);
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}
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if(ev == sensors_event) {
if(data == &button_sensor) {
printf("I am sink\n");
collect_set_sink(&tc, 1);
}
}
}
PROCESS_END();
}
/*---------------------------------------------------------------------------*/