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TCP packet filled with 'U' 1392 bytes long

Aswin C.

Hi,

I'm trying the RL-ARM tcp/ip stack on a arm7 LPC2368 from ETT (futurlec).
I succeed setting up a TCP listen socket with the EasyWeb API.
But when I try to use the TCP stack from RL-ARM 4.12 I don't succeed.

When the controller goes online, it send one packet (ARP notify) and it is filled with 'U' (55) the whole frame/packet, 1392 bytes long.

If I try to setup a TCP connection from my controller to the PC.
several packets as described above appear.

Any idea?

Kind Regards.

Parents
  • 0

    This is the code I used:
    On flashmagic I have set Osc. freq to 48.0 Mhz

    #include <stdio.h>
#include <RTL.h>
#include <LPC23xx.H>                          /* LPC23xx definitions         */

#define MCLK 48000000                         /* Master Clock 48 MHz         */
#define TCLK       10                         /* Timer Clock rate 10/s       */
#define TCNT (MCLK/TCLK/4)                    /* Timer Counts                */
void delay(unsigned long int);
void init(void);
U16 tcp_callback (U8 soc, U8 evt, U8 *ptr, U16 par);
void procrec (U8 *buf);
static void timer_poll (void);

U8 socket_tcp;
U8 rem_ip[4] = {192,168,3,68};
int main()
{
   init();
   init_TcpNet ();
   socket_tcp = tcp_get_socket (TCP_TYPE_CLIENT, 0, 30, tcp_callback);  /* Initialize TCP Socket and start listening */
  // tcp_listen (socket_tcp, 300)          ;
        tcp_connect (socket_tcp, rem_ip, 300, 0);
    while(1)
        {
          timer_poll ();
          main_TcpNet ();
        }
}
void delay(unsigned long int count1)
{
  count1 = count1 * 11000;
  while(count1-- > 0){ }
}
static void timer_poll ()
{
  // System tick timer running in poll mode
   if (T1IR & 1)
   {
      T1IR = 1;
     // Timer tick every 100 ms
      timer_tick ();
   }
}
void init()
{
   /* Timer 1 as interval timer, reload to 100ms. */
   T1TCR = 1;                                                                                           // Timer[1] = 100mS Trigger
   T1MCR = 3;
   T1MR0 = TCNT - 1;
}
U16 tcp_callback (U8 soc, U8 evt, U8 *ptr, U16 par)
{
   if (soc != socket_tcp)
   {
      return (0);
   }
   switch (evt)
   {
      case TCP_EVT_DATA:  /* TCP data frame has arrived, data is located at *par1, */
         procrec(ptr); /* data length is par2. Allocate buffer to send reply.   */
         break;

      case TCP_EVT_CONREQ:   /* Remote peer requested connect, accept it */
      return (1);
      case TCP_EVT_CONNECT:  /* The TCP socket is connected */
      return (1);
   }

   return (0);
}
/*--------------------------- Process received data  ------------------------*/
void procrec (U8 *buf)
{
   switch (buf[0])
   {
      case 49:
       break;
   }
}

Reply
  • 0

    This is the code I used:
    On flashmagic I have set Osc. freq to 48.0 Mhz

    #include <stdio.h>
#include <RTL.h>
#include <LPC23xx.H>                          /* LPC23xx definitions         */

#define MCLK 48000000                         /* Master Clock 48 MHz         */
#define TCLK       10                         /* Timer Clock rate 10/s       */
#define TCNT (MCLK/TCLK/4)                    /* Timer Counts                */
void delay(unsigned long int);
void init(void);
U16 tcp_callback (U8 soc, U8 evt, U8 *ptr, U16 par);
void procrec (U8 *buf);
static void timer_poll (void);

U8 socket_tcp;
U8 rem_ip[4] = {192,168,3,68};
int main()
{
   init();
   init_TcpNet ();
   socket_tcp = tcp_get_socket (TCP_TYPE_CLIENT, 0, 30, tcp_callback);  /* Initialize TCP Socket and start listening */
  // tcp_listen (socket_tcp, 300)          ;
        tcp_connect (socket_tcp, rem_ip, 300, 0);
    while(1)
        {
          timer_poll ();
          main_TcpNet ();
        }
}
void delay(unsigned long int count1)
{
  count1 = count1 * 11000;
  while(count1-- > 0){ }
}
static void timer_poll ()
{
  // System tick timer running in poll mode
   if (T1IR & 1)
   {
      T1IR = 1;
     // Timer tick every 100 ms
      timer_tick ();
   }
}
void init()
{
   /* Timer 1 as interval timer, reload to 100ms. */
   T1TCR = 1;                                                                                           // Timer[1] = 100mS Trigger
   T1MCR = 3;
   T1MR0 = TCNT - 1;
}
U16 tcp_callback (U8 soc, U8 evt, U8 *ptr, U16 par)
{
   if (soc != socket_tcp)
   {
      return (0);
   }
   switch (evt)
   {
      case TCP_EVT_DATA:  /* TCP data frame has arrived, data is located at *par1, */
         procrec(ptr); /* data length is par2. Allocate buffer to send reply.   */
         break;

      case TCP_EVT_CONREQ:   /* Remote peer requested connect, accept it */
      return (1);
      case TCP_EVT_CONNECT:  /* The TCP socket is connected */
      return (1);
   }

   return (0);
}
/*--------------------------- Process received data  ------------------------*/
void procrec (U8 *buf)
{
   switch (buf[0])
   {
      case 49:
       break;
   }
}

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