硬件平台展示（XILINX之ZYNQ系列）

ARM + FPGA多核

千兆以太网传输数据流

 

ZYNQ启动FLASH

/******************************************************************************
*
* Copyright (C) 2009 - 2014 Xilinx, Inc.  All rights reserved.
*
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* of this software and associated documentation files (the "Software"), to deal
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* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* Use of the Software is limited solely to applications:
* (a) running on a Xilinx device, or
* (b) that interact with a Xilinx device through a bus or interconnect.
*
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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******************************************************************************/

//启动TCP Server
int start_application()
{
    struct tcp_pcb *pcb;
    err_t err;
    unsigned port = 8080;

    /* create new TCP PCB structure */
    pcb = tcp_new();
    if (!pcb) {
        return -1;
    }

    /* bind to specified @port */
    err = tcp_bind(pcb, IP_ADDR_ANY, port);
    if (err != ERR_OK) {
        return -2;
    }

    /* we do not need any arguments to callback functions */
    tcp_arg(pcb, NULL);

    /* listen for connections */
    pcb = tcp_listen(pcb);
    if (!pcb) {
        xil_printf("Out of memory while tcp_listen\n\r");
        return -3;
    }

    /* specify callback to use for incoming connections */
    tcp_accept(pcb, accept_callback);
    return 0;
}

//receive TCP hook
err_t recv_callback(void *arg, struct tcp_pcb *tpcb,
                               struct pbuf *p, err_t err)
{
    /* do not read the packet if we are not in ESTABLISHED state */
    if (!p) {
        tcp_close(tpcb);
        tcp_recv(tpcb, NULL);
        return ERR_OK;
    }

    /* indicate that the packet has been received */
    tcp_recved(tpcb, p->len);

    /* echo back the payload */
    /* in this case, we assume that the payload is < TCP_SND_BUF */
    if (tcp_sndbuf(tpcb) > p->len) {
        //输出处理
    } else{
        xil_printf("no space in tcp_sndbuf\n\r");
    }
    /* free the received pbuf */
    pbuf_free(p);

    return ERR_OK;
}