[En-Nut-Discussion] Change the IP/gateway

[Ole Reinhardt]

Hello,

> I want to change the IP from a webpage, then reboot the board with the new
> IP.

Yes, why not? The IP address will be configured in your initialisation
code. You can store the new IP address in the eeprom and restart the
board by using the whatchdog timer. Not read back the ip value from
eeprom and configure your board with the new address...

I do it like this:

    if (sysconfig.network.usedhcp) {
        fprintf_P(uart, PSTR("Initialize Network. Sending DHCP
request..." NL));
        confnet.cdn_ip_addr = 0;
        confnet.cdn_ip_mask = 0;
        confnet.cdn_gateway = 0;

        if (NutDhcpIfConfig("eth0cs", sysconfig.network.mac, 10000)) {
            fprintf_P(uart, PSTR("no DHCP found. Using configured
defaults..." NL));
            NutNetIfConfig2("eth0cs", sysconfig.network.mac,
sysconfig.network.ip_addr, sysconfig.network.netmask,
                            sysconfig.network.gateway);
            NutIpRouteAdd(0, 0, sysconfig.network.gateway, &devEth0cs);
            NutNetSaveConfig();
        }
    } else {
        fprintf_P(uart, PSTR("Initialize Network..." NL));

        confnet.cdn_ip_addr = 0;
        confnet.cdn_ip_mask = 0;
        confnet.cdn_gateway = 0;

        NutNetIfConfig2("eth0cs", sysconfig.network.mac,
sysconfig.network.ip_addr, sysconfig.network.netmask,
                        sysconfig.network.gateway);
        NutIpRouteAdd(0, 0, sysconfig.network.gateway, &devEth0cs);
        NutNetSaveConfig();
    }


Bye,

Ole

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