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Keil RTX TCP/IP Transmit Rate

Jens S

Hello,

I have some questions about the Transmitrate over TCP/IP with the AT91SAM7x256 and RTX RL-ARM 412.

I modifyed the Telnet demo and added a Task for an TCP Blaster Test. It's a communication from an Win XP PC to the Developmentkit AT91SAM7X-DK.

The SAM7X sends the Data and the PC is receiving. It shows me a datarate of ~320 bytes/sec

I think thats a little bit slow. Maybe someone can tell me something about good settings for the TCP/IP Task/Handling ... Heap, Tasksize, Taskdelay etc.

This is what I have added in the telnet demo:

opened a socket:

#define SENDLEN  32     /* Number of bytes to send */

  socket_tcp = tcp_get_socket (TCP_TYPE_CLIENT, 0, 10, tcp_callback);

create a task:

  os_tsk_create (tcp_BlasterTask, 25);


task code:

__task void tcp_BlasterTask (void) {
        U8 *sendbuf;
        U8 ucI = 0;
        U8 tcpState = 0;

        tcpState = tcpState;

        while (1) {
                /* TCP */
                if (socket_tcp != 0)
                {
                        /* Start Connection */
                        switch (tcpState = tcp_get_state(socket_tcp)) {
                          case TCP_STATE_FREE:
                          case TCP_STATE_CLOSED:
                            tcp_connect (socket_tcp, Rem_IP, PORT_NUM, 0);
                            break;
                          case TCP_STATE_CONNECT:
                            if (tcp_check_send (socket_tcp) == __TRUE) {
                              sendbuf = tcp_get_buf(SENDLEN);
                                  for ( ucI = 0; ucI < SENDLEN; ucI++)
                                  {
                                        sendbuf[ucI] = ucI;
                                  }
                              tcp_send (socket_tcp, sendbuf, SENDLEN);
                            }
                            break;
                        }

                }
            os_dly_wait(5);
        }
}

Thx for your Help!

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