nes-proj/backyard/platform/sky/udprecv.c
2008-05-27 13:16:34 +00:00

92 lines
2.8 KiB
C

/*
* 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: udprecv.c,v 1.1 2008/05/27 13:16:34 adamdunkels Exp $
*/
#include <stdio.h>
#include <string.h>
#include "contiki.h"
#include "net/uip.h"
PROCESS(udprecv_process, "UDP recv process");
PROCESS_THREAD(udprecv_process, ev, data)
{
static struct uip_udp_conn *c;
PROCESS_EXITHANDLER(goto exit);
PROCESS_BEGIN();
printf("udprecv_process starting\n");
{
uip_ipaddr_t any;
uip_ipaddr(&any, 0,0,0,0);
c = udp_new(&any, HTONS(0), NULL);
uip_udp_bind(c, HTONS(4321));
}
while(1) {
PROCESS_YIELD();
if(ev == tcpip_event && uip_newdata()) {
u8_t *src = ((struct uip_udpip_hdr *)&uip_buf[UIP_LLH_LEN])->srcipaddr.u8;
printf("%d.%d.%d.%d: %s\n",
src[0], src[1], src[2], src[3], (char *)uip_appdata);
}
}
exit:
/* Contiki does automatic garbage collection of uIP state and we
* need not worry about that. */
printf("udprecv_process exiting\n");
PROCESS_END();
}
/*
* Initialize this kernel module.
*/
void
_init(void)
{
process_start(&udprecv_process, NULL);
}
/*
* When this module is unloaded we must clean up!
*/
void
_fini(void)
{
process_exit(&udprecv_process);
}