Arduino: Automatic set advanced network config

 when first value of dns or gateway is filled
#268

Author: 1technophile

OpenMQTTGateway.ino

@@ -527,8 +527,14 @@ void setup_wifimanager(){
 
 #else // Arduino case
 void setup_ethernet() {
-  Ethernet.begin(mac, ip); //Comment and uncomment the following line if you want to use advanced network config
-  //Ethernet.begin(mac, ip, Dns, gateway, subnet);
+  if (gateway[0] != 0 || Dns[0]!=0)
+  {
+    trc(F("Advanced ethernet config"));
+    Ethernet.begin(mac, ip, Dns, gateway, subnet);
+  }else{
+    trc(F("Simple ethernet config"));
+    Ethernet.begin(mac, ip); 
+  }
   trc(F("OpenMQTTGateway ip: "));
   Serial.println(Ethernet.localIP());
   trc(F("Ethernet ok"));

User_config.h

@@ -68,9 +68,8 @@ char mqtt_port[6] = "1883";
 #endif
 
 const byte ip[] = { 192, 168, 1, 99 }; //ip adress
-// Advanced network config (optional) if you want to use these parameters uncomment line 158, 172 and comment line 171  of OpenMQTTGateway.ino
-const byte gateway[] = { 192, 168, 1, 1 }; //ip adress
-const byte Dns[] = { 192, 168, 1, 1 }; //ip adress
+const byte gateway[] = { 0, 0, 0, 0 }; //ip adress, if first value is different from 0 advanced config network will be used and you should fill gateway & dns
+const byte Dns[] = { 0, 0, 0, 0 }; //ip adress, if first value is different from 0 advanced config network will be used and you should fill gateway & dns
 const byte subnet[] = { 255, 255, 255, 0 }; //ip adress
 
 /*-------------DEFINE YOUR OTA PARAMETERS BELOW----------------*/