Change AP static IP configuration

[luc-github]

Seems there is no function to change AP IP configuration, currently setting IP/GW/Subnet works only for Station.
I have modified ESP8266Wifi.cpp/.h to add the missing function and it works so far, it would be good to add it I think.

void ESP8266WiFiClass::configAP(IPAddress local_ip, IPAddress gateway, IPAddress subnet)
{
    struct ip_info info;
    info.ip.addr = static_cast<uint32_t>(local_ip);
    info.gw.addr = static_cast<uint32_t>(gateway);
    info.netmask.addr = static_cast<uint32_t>(subnet);
    wifi_softap_dhcps_stop();
    wifi_set_ip_info(SOFTAP_IF, &info);
    wifi_softap_dhcps_start();
}

[reaper7]

works well!
This is very usefull

[igrr]

Thanks!
Merged with a minor naming change (configAP -> softAPConfig) to be consistent with other functions.

[JanJansen47]

From the network point of view there appeared also to be an issue with the lease time of my (TP-Link) router. Standard IP address lease time is 120 minutes. In case an ESP8266 request the same fixed IP address within these 120 minutes its "refused" and the DHCP return an "ad-hoc" ip address. So I changed the lease time to one (1) minute.

[khalilst]

Sorry, i'm a newbie to this field. Could you please write me an example for calling of softAPConfig? I have no idea how to pass the arguments.
Thanks in advance

[joemxwolf]

what at commands is used for changing ip address of esp8266 (cwmode=3) so that every time the esp connects to the router the router will give static ip for the esp? like having a constant ip for the esp given by the router? big thnx.