main.c

基于uIP框架的8051tcpip源码

/*
 * 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 1.1 2001/11/20 20:49:45 adam Exp $
 *
 */


#include "uip.h"
#include "slipdev.h"
#include "httpd.h"

#include <8051io.h>
#include <8051reg.h>
#include <8051int.h>

#define COUNT 15596  //Count for timer0 interrupt
#define CLK_TCK 500

u16_t numClicks = 0;
u8_t count = 0;

// Set up timer0
void init_int()
{
	TMOD = 0x21;
	TH0 = -COUNT >> 8;
	TL0 = -COUNT;
	TCON = 0x50;
	IE = 0x82;
}

// timer0 ISR
INTERRUPT(_TF0_) MyT0ISR()
{
	TH0 = -COUNT >> 8;
	TL0 = -COUNT;
	if (++count == 10)
	{
	  count = 0;
	  numClicks++;
    }
}

/*-----------------------------------------------------------------------------------*/
void
main(void)
{
  u8_t i;
  u16_t start, current;

  uip_init();
  httpd_init();
  slipdev_init();
  putstr("8051 TCP/IP stack and web server running\n");
  init_int();
  start = 0;

  modem_request();
  modem_reply();

  while(1) {
    uip_len = slipdev_read();
    if(uip_len > 0) {
      uip_process(UIP_DATA);
      if(uip_len > 0) {
	    slipdev_send();
      }
    }

    current = numClicks;
    if((int)(current - start) >= 1) {
      for(i = 0; i < UIP_CONNS; ++i) {
	    uip_periodic(i);
	    if(uip_len > 0) {
	      slipdev_send();
	    }
      }
      start = current;
    }
  }

}
/*-----------------------------------------------------------------------------------*/