原创 单片机以太网-web网页问题

uip协议栈，STC12LE58AD单片机。问题是得不到网页数据，10延迟后退出，发送无数据。

调试httpd部分串口输出如下：

ip: version4 header.
ip: POSSIBLE TCP RECEIVED.
tcp: checksum correct.
ip: version4 header.
ip: POSSIBLE TCP RECEIVED.
tcp: checksum correct.
tcp: goto found.
TCP: found 2.
TCP: found 3.
httpd_appcallTCP
HTTP_NOGET
TCP: found SYN_RCVD.
ip: version4 header.
ip: POSSIBLE TCP RECEIVED.
tcp: bad checksum.
ip: version4 header.
ip: POSSIBLE TCP RECEIVED.
tcp: checksum correct.
tcp: goto found.
TCP: found 1.
httpd_appcall
httpd_appcall
httpd_appcall
httpd_appcall
httpd_appcall
httpd_appcall
httpd_appcall
httpd_appcall
httpd_appcall
httpd_appcall
httpd_appcall
TCP: sending nodata
UIP_ABORT

wireshark抓捕如下：

(1.28 K)  该附件被下载次数 6 

主程序如下：

void main(void)
{
    u8_t arptimer;
 u8_t i;

 InitHardware();
    uip_init();

    httpd_init();

    //etherdev_init();
 //enc28j60Init(mymac);

    uip_arp_init();

    arptimer = 0;

    while(1)
    {
  WDT_CONTR=0x3C;//看门狗
  timer0();
//----------------------------------------//定时更新ARP  
  if(double_second)
  {
   double_second = 0;
   //SBUF=0XAA;
   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)
    {
     uip_arp_out();
     enc28j60PacketSend(uip_len,uip_buf);
    }
   }
  }

//  uip_arp_timer();
//-----------------------------------------------------------------//检测数据接收
        //uip_len = etherdev_read();
  uip_len=enc28j60PacketReceive(UIP_BUFSIZE,uip_buf);

        if(uip_len == 0)
    continue;

  
        if(ETHBUF->type == htons(UIP_ETHTYPE_IP))//0x0800//IP协议族
  {
    if(BUF->proto==UIP_PROTO_TCP)//tcp
   {
    uip_process(UIP_DATA);
         if(uip_len > 0)
       enc28j60PacketSend(uip_len,uip_buf);//0x06
    continue;   
   }
   
   if(BUF->proto==UIP_PROTO_ICMP)//icmp//0x01
            {
   
             uip_arp_ipin();
             uip_input();

             if(uip_len > 0)
                {
                 uip_arp_out();
                 //etherdev_send();
     enc28j60PacketSend(uip_len,uip_buf);
     continue;
             }
            }
   if(BUF->proto==UIP_PROTO_UDP)//udp//17
   {
    continue;
   }

   }
        
   if(ETHBUF->type == htons(UIP_ETHTYPE_ARP))//0x0806
         {
    //UART1_PutStr(uip_buf,42);
             uip_arp_arpin();
 
             if(uip_len > 0)
                { 
                 //etherdev_send();
     enc28j60PacketSend(uip_len,uip_buf);
     continue;
             }
          }
/*
  if(BUF->proto==UIP_PROTO_TCP)
  {
   uip_process(UIP_DATA);
        if(uip_len > 0)
      enc28j60PacketSend(uip_len,uip_buf);
   continue;
  }
*/
    }//end while

    return;
}