/**
* Change IP configuration settings disabling the dhcp client
* @param local_ip Static ip configuration
* @param gateway Static gateway configuration
* @param subnet Static Subnet mask
* @param dns1 Static DNS server 1
* @param dns2 Static DNS server 2
*/
bool ESP8266WiFiSTAClass::config(IPAddress local_ip, IPAddress arg1, IPAddress arg2, IPAddress arg3, IPAddress dns2) {
if(!WiFi.enableSTA(true)) {
return false;
}
//ESP argument order is: ip, gateway, subnet, dns1
//Arduino arg order is: ip, dns, gateway, subnet.
//first, check whether dhcp should be used, which is when ip == 0 && gateway == 0 && subnet == 0.
bool espOrderUseDHCP = (local_ip == 0U && arg1 == 0U && arg2 == 0U);
bool arduinoOrderUseDHCP = (local_ip == 0U && arg2 == 0U && arg3 == 0U);
if (espOrderUseDHCP || arduinoOrderUseDHCP) {
_useStaticIp = false;
wifi_station_dhcpc_start();
return true;
}
//To allow compatibility, check first octet of 3rd arg. If 255, interpret as ESP order, otherwise Arduino order.
IPAddress gateway = arg1;
IPAddress subnet = arg2;
IPAddress dns1 = arg3;
if(subnet[0] != 255)
{
//octet is not 255 => interpret as Arduino order
gateway = arg2;
subnet = arg3[0] == 0 ? IPAddress(255,255,255,0) : arg3; //arg order is arduino and 4th arg not given => assign it arduino default
dns1 = arg1;
}
// check whether all is IPv4 (or gateway not set)
if (!(local_ip.isV4() && subnet.isV4() && (!gateway.isSet() || gateway.isV4()))) {
return false;
}
//ip and gateway must be in the same subnet
if((local_ip.v4() & subnet.v4()) != (gateway.v4() & subnet.v4())) {
return false;
}
struct ip_info info;
info.ip.addr = local_ip.v4();
info.gw.addr = gateway.v4();
info.netmask.addr = subnet.v4();
wifi_station_dhcpc_stop();
if(wifi_set_ip_info(STATION_IF, &info)) {
_useStaticIp = true;
} else {
return false;
}
if(dns1.isSet()) {
// Set DNS1-Server
dns_setserver(0, dns1);
}
if(dns2.isSet()) {
// Set DNS2-Server
dns_setserver(1, dns2);
}
return true;
}
