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[GH-ISSUE #1128] CANNOT SET STATIC IP #966

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opened 2026-02-28 01:27:53 +03:00 by kerem · 4 comments

kerem commented

2026-02-28 01:27:53 +03:00

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Originally created by @birrex on GitHub (Sep 18, 2020).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1128

Hello, I have many days looking for a solution to my problem, I am trying to connect to the wifimanager with a fixed IP, but I cannot.

My case:
I want to connect my nodemcu to a Wi-Fi network through the wifimanager library, then I want to put the fixed IP on the device, to make url requests to do various tasks but I can't.

This is my code

I have searched a lot and I can not find a solution.

`/*

Sketch: ESP8266_LED_Control_06_Station_Mode_with_mDNS_and_wifiManager
Control an LED from a web browser
Intended to be run on an ESP8266
*/

#include <ESP8266WiFi.h>
//#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>

#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>

// change these values to match your network
//char ssid[] = "MyNetwork_SSID"; // your network SSID (name)
//char pass[] = "Newtwork_Password"; // your network password

WiFiServer server(80);

String header = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n";
String html_1 = "<html><head></head>

test

";
String html_2 = "";
String html_4 = "

</html>";

String request = "";
int LED_Pin = D1;

String onlyURL;
int index1;
int index2;
String NoUrl;
String NoUrl3;

int Index1 ;
int Index2;
String NoUrl1;
String onlyURL1;
WiFiManager wifiManager;

void setup()
{
pinMode(LED_Pin, OUTPUT);

  Serial.begin(115200);
  delay(500);
  Serial.println(F("Serial started at 115200"));
  Serial.println();

  // We start by connecting to a WiFi network
  //Serial.print(F("Connecting to "));  Serial.println(ssid);
  //WiFi.begin(ssid, pass);

  //while (WiFi.status() != WL_CONNECTED) 
  //{
  //    Serial.print(".");    delay(500);
  //}
  //Serial.println("");
  //Serial.println(F("[CONNECTED]"));
  //Serial.print("[IP ");              
  //Serial.print(WiFi.localIP()); 
  //Serial.println("]");

 // WiFiManager

  //wifiManager.resetSettings();
  wifiManager.autoConnect("ESP8266","password");

  
  // or use this for auto generated name ESP + ChipID
  //wifiManager.autoConnect();
  
  // if you get here you have connected to the WiFi
  Serial.println("Connected.");


  if (!MDNS.begin("esp8266"))   {  Serial.println("Error setting up MDNS responder!");  }
  else                          {  Serial.println("mDNS responder started");  }

  // start a server
  server.begin();
  Serial.println("Server started");

} // void setup()

void loop()
{

// Check if a client has connected
WiFiClient client = server.available();
//if (!client)  {  return;  }

if (client)
{
      // Read the first line of the request
      request = client.readStringUntil('\r');
      Serial.println("request:");
      Serial.println(request);


        index1 = request.indexOf('/?');  //finds location of first ,
        NoUrl = request.substring(0, index1);   //captures first data String
        index2 = request.indexOf(' ', index1+1 );   //finds location of second ,
        onlyURL = request.substring(index1+1, index2+1);
        Serial.println("La URl SEPARADA ES:"+onlyURL+"txt: "+onlyURL.indexOf("CHANGEIP"));

        Index1 = onlyURL.indexOf(':'); // Si es que se encuentran ,
        Index2 = onlyURL.length();   //finds location of second ,
        onlyURL1 = onlyURL.substring(Index1+1, Index2);
        Serial.println("ip solicitada ");
        Serial.println(onlyURL1);
        
    if(onlyURL.indexOf("CHANGEIP") == 0){
      Serial.print("CHANGEIP...");
      html_2 = "peticion de cambio de ip "+onlyURL1;
     wifiManager.setSTAStaticIPConfig(IPAddress(192,168,1,98), IPAddress(192,168,1,98), IPAddress(255,255,255,0));

//here not work!!!!!!
}

    if(request.indexOf("/?X=2") > 0){
   
      html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn off the LED' ></form><br>";

    }

   if(request.indexOf("/?X=1") > 0){
    html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn off the LED' ></form><br>";

    }

   
   
      client.flush();
   
      client.print( header );
      client.print( html_1 );    
      client.print( html_2 );
      client.print( html_4);
   
      delay(5);
      
     // The client will actually be disconnected when the function returns and 'client' object is detroyed
       
}

} // void loop()`

Originally created by @birrex on GitHub (Sep 18, 2020). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1128 Hello, I have many days looking for a solution to my problem, I am trying to connect to the wifimanager with a fixed IP, but I cannot. My case: I want to connect my nodemcu to a Wi-Fi network through the wifimanager library, then I want to put the fixed IP on the device, to make url requests to do various tasks but I can't. This is my code I have searched a lot and I can not find a solution. `/* * Sketch: ESP8266_LED_Control_06_Station_Mode_with_mDNS_and_wifiManager * Control an LED from a web browser * Intended to be run on an ESP8266 */ #include <ESP8266WiFi.h> //#include <DNSServer.h> #include <ESP8266WebServer.h> #include <WiFiManager.h> #include <ESP8266WiFi.h> #include <ESP8266mDNS.h> // change these values to match your network //char ssid[] = "MyNetwork_SSID"; // your network SSID (name) //char pass[] = "Newtwork_Password"; // your network password WiFiServer server(80); String header = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n"; String html_1 = "<!DOCTYPE html><html><head><meta name='viewport' content='width=device-width, initial-scale=1.0'/><meta charset='utf-8'><style>body {font-size:140%;} #main {display: table; margin: auto; padding: 0 10px 0 10px; } h2,{text-align:center; } .button { padding:10px 10px 10px 10px; width:100%; background-color: #4CAF50; font-size: 120%;}</style><title>test</title></head><body><div id='main'><h2>test</h2>"; String html_2 = ""; String html_4 = "</div></body></html>"; String request = ""; int LED_Pin = D1; String onlyURL; int index1; int index2; String NoUrl; String NoUrl3; int Index1 ; int Index2; String NoUrl1; String onlyURL1; WiFiManager wifiManager; void setup() { pinMode(LED_Pin, OUTPUT); Serial.begin(115200); delay(500); Serial.println(F("Serial started at 115200")); Serial.println(); // We start by connecting to a WiFi network //Serial.print(F("Connecting to ")); Serial.println(ssid); //WiFi.begin(ssid, pass); //while (WiFi.status() != WL_CONNECTED) //{ // Serial.print("."); delay(500); //} //Serial.println(""); //Serial.println(F("[CONNECTED]")); //Serial.print("[IP "); //Serial.print(WiFi.localIP()); //Serial.println("]"); // WiFiManager //wifiManager.resetSettings(); wifiManager.autoConnect("ESP8266","password"); // or use this for auto generated name ESP + ChipID //wifiManager.autoConnect(); // if you get here you have connected to the WiFi Serial.println("Connected."); if (!MDNS.begin("esp8266")) { Serial.println("Error setting up MDNS responder!"); } else { Serial.println("mDNS responder started"); } // start a server server.begin(); Serial.println("Server started"); } // void setup() void loop() { // Check if a client has connected WiFiClient client = server.available(); //if (!client) { return; } if (client) { // Read the first line of the request request = client.readStringUntil('\r'); Serial.println("request:"); Serial.println(request); index1 = request.indexOf('/?'); //finds location of first , NoUrl = request.substring(0, index1); //captures first data String index2 = request.indexOf(' ', index1+1 ); //finds location of second , onlyURL = request.substring(index1+1, index2+1); Serial.println("La URl SEPARADA ES:"+onlyURL+"txt: "+onlyURL.indexOf("CHANGEIP")); Index1 = onlyURL.indexOf(':'); // Si es que se encuentran , Index2 = onlyURL.length(); //finds location of second , onlyURL1 = onlyURL.substring(Index1+1, Index2); Serial.println("ip solicitada "); Serial.println(onlyURL1); if(onlyURL.indexOf("CHANGEIP") == 0){ Serial.print("CHANGEIP..."); html_2 = "peticion de cambio de ip "+onlyURL1; wifiManager.setSTAStaticIPConfig(IPAddress(192,168,1,98), IPAddress(192,168,1,98), IPAddress(255,255,255,0)); //here not work!!!!!! } if(request.indexOf("/?X=2") > 0){ html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn off the LED' ></form><br>"; } if(request.indexOf("/?X=1") > 0){ html_2 = "<form id='F1' action='LEDOFF'><input class='button' type='submit' value='Turn off the LED' ></form><br>"; } client.flush(); client.print( header ); client.print( html_1 ); client.print( html_2 ); client.print( html_4); delay(5); // The client will actually be disconnected when the function returns and 'client' object is detroyed } } // void loop()`

kerem commented

2026-02-28 01:27:53 +03:00

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Owner

@EgHubs commented on GitHub (Dec 11, 2020):

Just try this example (AutoConnectWithFSParametersAndCustomIP).
But first, you may need to reset your wifi settings which can be done by uncommenting this line
wifiManager.resetSettings();
and then reupload the code with that line commented.

@EgHubs commented on GitHub (Dec 11, 2020): Just try [this ](https://github.com/tzapu/WiFiManager/blob/0.16.0/examples/AutoConnectWithFSParametersAndCustomIP/AutoConnectWithFSParametersAndCustomIP.ino)example (AutoConnectWithFSParametersAndCustomIP). But first, you may need to reset your wifi settings which can be done by uncommenting this line ` wifiManager.resetSettings(); ` and then reupload the code with that line commented.

kerem commented

2026-02-28 01:27:53 +03:00

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@jordanadania commented on GitHub (Apr 15, 2021):

Bad Link

@jordanadania commented on GitHub (Apr 15, 2021): Bad Link

kerem commented

2026-02-28 01:27:53 +03:00

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@tablatronix commented on GitHub (Apr 15, 2021):

setSTAStaticIPConfig only works when you are using autoconnect and before anything

@tablatronix commented on GitHub (Apr 15, 2021): setSTAStaticIPConfig only works when you are using autoconnect and before anything

kerem commented

2026-02-28 01:27:53 +03:00

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@EgHubs commented on GitHub (Apr 16, 2021):