// This sets the IP configuration on-the-fly
void ethernet_set_configuration(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay)
{
if ((gs_net_if.flags & NETIF_FLAG_DHCP) != 0)
{
// stop DHCP if it was used before
dhcp_stop(&gs_net_if);
}
struct ip_addr x_ip_addr, x_net_mask, x_gateway;
x_ip_addr.addr = ipAddress.GetV4LittleEndian();
x_net_mask.addr = netMask.GetV4LittleEndian();
x_gateway.addr = gateWay.GetV4LittleEndian();
if (x_ip_addr.addr == 0)
{
// start DHCP and request a dynamic IP address
dhcp_start(&gs_net_if);
}
else
{
// use static IP address
netif_set_ipaddr(&gs_net_if, &x_ip_addr);
netif_set_netmask(&gs_net_if, &x_net_mask);
netif_set_gw(&gs_net_if, &x_gateway);
// don't forget to set it up again
netif_set_up(&gs_net_if);
}
}
void start_ethernet(IPAddress ipAddress, IPAddress netMask, IPAddress gateWay, netif_status_callback_fn status_cb)
{
struct ip_addr x_ip_addr, x_net_mask, x_gateway;
extern err_t ethernetif_init(struct netif *netif);
x_ip_addr.addr = ipAddress.GetV4LittleEndian();
if (x_ip_addr.addr == 0)
{
x_net_mask.addr = 0;
x_gateway.addr = 0;
}
else
{
x_net_mask.addr = netMask.GetV4LittleEndian();
x_gateway.addr = gateWay.GetV4LittleEndian();
}
/* Add data to netif */
netif_add(&gs_net_if, &x_ip_addr, &x_net_mask, &x_gateway, NULL, ethernetif_init, ethernet_input);
/* Make it the default interface */
netif_set_default(&gs_net_if);
/* Setup callback function for netif status change */
netif_set_status_callback(&gs_net_if, status_cb);
/* Bring it up */
if (x_ip_addr.addr == 0)
{
/* DHCP mode */
dhcp_start(&gs_net_if);
}
else
{
/* Static mode */
netif_set_up(&gs_net_if);
}
}