96 lines
3.5 KiB
C
96 lines
3.5 KiB
C
/*
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* Copyright (c) 2011, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#include "contiki.h"
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#include "lib/random.h"
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#include "sys/ctimer.h"
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#include "sys/etimer.h"
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#include "net/ip/uip.h"
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#include "net/ipv6/uip-ds6.h"
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#include "simple-udp.h"
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#include <stdio.h>
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#include <string.h>
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#define UDP_PORT 1234
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#define SEND_INTERVAL (20 * CLOCK_SECOND)
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#define SEND_TIME (random_rand() % (SEND_INTERVAL))
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static struct simple_udp_connection broadcast_connection;
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/*---------------------------------------------------------------------------*/
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PROCESS(broadcast_example_process, "UDP broadcast example process");
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AUTOSTART_PROCESSES(&broadcast_example_process);
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/*---------------------------------------------------------------------------*/
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static void
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receiver(struct simple_udp_connection *c,
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const uip_ipaddr_t *sender_addr,
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uint16_t sender_port,
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const uip_ipaddr_t *receiver_addr,
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uint16_t receiver_port,
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const uint8_t *data,
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uint16_t datalen)
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{
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printf("Data received on port %d from port %d with length %d\n",
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receiver_port, sender_port, datalen);
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(broadcast_example_process, ev, data)
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{
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static struct etimer periodic_timer;
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static struct etimer send_timer;
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uip_ipaddr_t addr;
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PROCESS_BEGIN();
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simple_udp_register(&broadcast_connection, UDP_PORT,
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NULL, UDP_PORT,
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receiver);
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etimer_set(&periodic_timer, SEND_INTERVAL);
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while(1) {
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&periodic_timer));
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etimer_reset(&periodic_timer);
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etimer_set(&send_timer, SEND_TIME);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&send_timer));
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printf("Sending broadcast\n");
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uip_create_linklocal_allnodes_mcast(&addr);
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simple_udp_sendto(&broadcast_connection, "Test", 4, &addr);
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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