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Altera_Forum's avatar
Altera_Forum
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15 years ago

How do Nios-II handle IP address change during the TCP/IP connection?

Dear all, I have problem with changing IP address in the FPGA board. Here is my case, let say I have a FPGA board which is connected to PC. The PC sends a command to the FPGA that asks th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Sorry to re-open this thread, but I had the same problem.

Your code worked for me, except for DHCP.

This one does: 


    if(dhcp_actv)
    {
        p_net -> n_flags |= NF_DHCPC;
//      dhc_setup();    // fails, because port is in use?
        dhc_state_init(0, FALSE);         /* Put DHCPClient in INIT-REBOOT state */
        int e = dhc_second();           /* To send the DISCOVER/REQUEST pkt */
        if (e)
            printf("DHCP returned error %i.\n", e);
    }
In dhc_setup(), calling dhc_first() fails , probably because the port is already in use. So I just called dhc_second, is it's done in dhc_setup().

Works for me.