Hi all, My design is based on FreeRTOS+IO and FreeRTOS+CLI demo 2 functionality provided by FreeRtos.
I used it to make a socket server application (TCP server), the function is good but I want to investigate about the speed. I monitor my “conection” with WireShark, and send data from the PC to by board. I’ve got a custom application which send me data (around 88 Bytes in 5 packets). And I found that the speed is slow 2Mbits/sec.
I use the socket api. And I would like to know how to increase this speed I know that I can expect 100Mbits/sec ( also I use a TCP server) but I’m expected around 40Mbits/sec. Thanks for help.

Note an update to the FreeRTOS+IO code has just been released.  You can download it from the existing FreeRTOS+IO featured demo web page. The sockets interface is going to be the slowest of the three available lwIP APIs.  I know there has been some discussion on the lwIP mailing list about the sockets performance, I would recommend looking in their archive. Regards.

Ok thanks for the reply.
Maybe someone can show me how to use the netconn api, I want to make a simple tcp server. I tried this piece of code

    struct netconn *conn, *newconn;
    err_t err;
    /* create a connection structure */
    conn = netconn_new(NETCONN_TCP);
    /* bind the connection to port 2000 on any local IP address */
    netconn_bind(conn, NULL, 7);
        printf("Now listeningn");
    /* tell the connection to listen for incoming connection requests */
    netconn_listen(conn);
    /* Grab new connection. */
    err = netconn_accept(conn, &newconn);
        printf("accepted new connection %pn", newconn);
    /* Process the new connection. */
    if (err == ERR_OK) 
    {
        struct netbuf *buf;
        void *data;
        u16_t len;
   
        while ((err = netconn_recv(newconn, &buf)) == ERR_OK) 
        {
            printf("Received datan");
            do{
                netbuf_data(buf, &data, &len);
                err = netconn_write(newconn, data, len, NETCONN_COPY);
                if (err != ERR_OK)
                    printf("tcpecho: netconn_write: error "%s"n", lwip_strerr(err));
            }while (netbuf_next(buf) >= 0);
        netbuf_delete(buf);
        }
    /* Close connection and discard connection identifier. */
    netconn_close(newconn);
    netconn_delete(newconn);
    }

There is something I don’t understand (sorry but I’am not familiar with tcp/ip stack) to initialize the emac driver and the lwip stack, on the example (from freeRtos) we could see :

tcpip_init( lwIPAppsInit, NULL );

Why I can’t write

tcpip_init( NULL, NULL );
lwIPAppsInit();

For now this doesn’t work, the server start receiving data then nothing and the data rate goes near 0bps.