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fb94d50410
typedef union uip_ip4addr_t {
u16_t u16[2];
u8_t u8[4];
} uip_ip4addr_t;
typedef uip_ip4addr_t uip_ipaddr_t;
This implies that one must consistently pass pointers to
uip_ipaddr_t:s and not mix and match pointers with
uip_ipaddr_t:s as was done earlier.
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/*
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* Copyright (c) 2005, 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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* @(#)$Id: udpsend.c,v 1.2 2006/08/09 16:13:40 bg- Exp $
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*/
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/* Set the IP destination address to something different from the
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* broadcast address. Use commas (",") rather than the normal dots
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* (".") in addresses.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "contiki.h"
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#include "net/uip.h"
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#include "dev/leds.h"
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#include "dev/light.h"
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PROCESS(udpsend_process, "UDP send process");
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PROCESS_THREAD(udpsend_process, ev, data)
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{
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static struct etimer etimer;
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static struct uip_udp_conn *c;
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PROCESS_EXITHANDLER(goto exit);
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PROCESS_BEGIN();
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printf("udpsend_process starting\n");
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{
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uip_ipaddr_t addr;
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uip_ipaddr(&addr, 255,255,255,255); /* Change address here! */
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c = udp_new(&addr, HTONS(4321), NULL);
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c->ttl = 1; /* One hop only. */
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}
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while(1) {
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etimer_set(&etimer, CLOCK_SECOND);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&etimer));
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tcpip_poll_udp(c);
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PROCESS_WAIT_EVENT_UNTIL(ev == tcpip_event);
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char buf[64];
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sprintf(buf, "light sensors %d %d", sensors_light1(), sensors_light2());
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uip_send(buf, strlen(buf) + 1);
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}
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exit:
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/* Contiki does automatic garbage collection of uIP state and we
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* need not worry about that. */
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printf("udpsend_process exiting\n");
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PROCESS_END();
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}
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/*
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* Initialize this kernel module.
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*/
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void
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_init(void)
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{
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process_start(&udpsend_process, NULL);
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}
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/*
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* When this module is unloaded we must clean up!
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*/
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void
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_fini(void)
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{
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process_exit(&udpsend_process);
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}
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