uip_main.c

一个小的RTOS具有UIP网络功能

/*
 * Copyright (c) 2001, Adam Dunkels.
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Adam Dunkels.
 * 4. The name of the author may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.  
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 uIP TCP/IP stack.
 *
 * $Id: uip_main.c,v 1.5 2003/08/20 20:58:38 adamdunkels Exp $
 *
 */


/* uip_main.c: initialization code and main event loop. */

#include "uip.h"
#include "uip_arp.h"

#include "uip_main.h"

#include "ek.h"

u16_t uip_arp_draddr[2], uip_arp_netmask[2];

#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
#ifndef NULL
#define NULL (void *)0
#endif /* NULL */

static u8_t i, arptimer;
static u16_t start, current;

/*-----------------------------------------------------------------------------------*/
unsigned char
uip_main_ipaddrconv(char *addrstr, unsigned char *ipaddr)
{
  unsigned char tmp;
  char c;
  unsigned char i, j;

  tmp = 0;
  
  for(i = 0; i < 4; ++i) {
    j = 0;
    do {
      c = *addrstr;
      ++j;
      if(j > 4) {
	return 0;
      }
      if(c == '.' || c == 0) {
	*ipaddr = tmp;
	++ipaddr;
	tmp = 0;
      } else if(c >= '0' && c <= '9') {
	tmp = (tmp * 10) + (c - '0');
      } else {
	return 0;
      }
      ++addrstr;
    } while(c != '.' && c != 0);
  }
  return 1;
}

/*-----------------------------------------------------------------------------------*/