main.c

tcp_ip协议栈的ucos代码

/*
 * 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: main.c,v 1.2 2001/09/14 23:02:25 adam Exp $
 *
 */


#include "uip.h"
#include "tundev.h"
#include "httpd.h"

/*-----------------------------------------------------------------------------------*/
int
main(void)
{
  u8_t i;
  tundev_init();
  uip_init();
  httpd_init();
  
  while(1) {
    /* Let the tundev network device driver read an entire IP packet
       into the uip_buf. If it must wait for more than 0.5 seconds, it
       will return with the return value 0. If so, we know that it is
       time to call upon the uip_periodic(). Otherwise, the tundev has
       received an IP packet that is to be processed by uIP. */
    uip_len = tundev_read();
    if(uip_len == 0) {
      for(i = 0; i < UIP_CONNS; i++) {
	uip_periodic(i);
      /* If the above function invocation resulted in data that
	 should be sent out on the network, the global variable
	 uip_len is set to a value > 0. */
	if(uip_len > 0) {
	  tundev_send();
	}
      }
    } else {
      
      uip_process(UIP_DATA); 
      /* If the above function invocation resulted in data that
	 should be sent out on the network, the global variable
	 uip_len is set to a value > 0. */
     if(uip_len > 0) {
	tundev_send();
      }
    }
    
  }
  return 0;
}
/*-----------------------------------------------------------------------------------*/