/* * 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: udpsend.c,v 1.2 2010/10/19 18:29:04 adamdunkels Exp $ */ /* Set the IP destination address to something different from the * broadcast address. Use commas (",") rather than the normal dots * (".") in addresses. */ #include #include #include "contiki.h" #include "net/uip.h" #include "dev/leds.h" #include "dev/light.h" PROCESS(udpsend_process, "UDP send process"); PROCESS_THREAD(udpsend_process, ev, data) { static struct etimer etimer; static struct uip_udp_conn *c; PROCESS_EXITHANDLER(goto exit); PROCESS_BEGIN(); printf("udpsend_process starting\n"); { uip_ipaddr_t addr; uip_ipaddr(&addr, 255,255,255,255); /* Change address here! */ c = udp_new(&addr, UIP_HTONS(4321), NULL); c->ttl = 1; /* One hop only. */ } while(1) { etimer_set(&etimer, CLOCK_SECOND); PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&etimer)); tcpip_poll_udp(c); PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event); char buf[64]; sprintf(buf, "light sensors %d %d", sensors_light1(), sensors_light2()); uip_send(buf, strlen(buf) + 1); } exit: /* Contiki does automatic garbage collection of uIP state and we * need not worry about that. */ printf("udpsend_process exiting\n"); PROCESS_END(); } /* * Initialize this kernel module. */ void _init(void) { process_start(&udpsend_process, NULL); } /* * When this module is unloaded we must clean up! */ void _fini(void) { process_exit(&udpsend_process); }