I have used the below code with proper Wifi Address and password. The Nodemcu connects to WIfi, and displays IP address, But the IP address cannot be used to open a web page. It says “This site cant be reached”. Can anyone help with this
#include <ESP8266WiFi.h>
const char* ssid = "***";
const char* password = "*****";
int ledPin = D0;
WiFiServer server(80);
void setup() {
pinMode(ledPin,OUTPUT);
digitalWrite(ledPin,LOW);
Serial.begin(115200);
Serial.println();
Serial.print("Wifi connecting to ");
Serial.println( ssid );
WiFi.begin(ssid,password);
Serial.println();
Serial.print("Connecting");
while( WiFi.status() != WL_CONNECTED ){
delay(500);
Serial.print(".");
}
Serial.println();
Serial.println("Wifi Connected Success!");
Serial.print("NodeMCU IP Address : ");
Serial.println(WiFi.localIP() );
server.begin();
Serial.println("NodeMCU Server started");
// Print the IP address
Serial.print("Use this URL to connect: ");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.println("/");
}
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Wait until the client sends some data
Serial.println("Hello New client");
while(!client.available()){
delay(1);
}
// Read the first line of the request
String request = client.readStringUntil('\r');
Serial.println(request);
client.flush();
// Match the request
int value = LOW;
if (request.indexOf("/LED=ON") != -1) {
digitalWrite(ledPin, HIGH);
value = HIGH;
}
if (request.indexOf("/LED=OFF") != -1) {
digitalWrite(ledPin, LOW);
value = LOW;
}
// Set ledPin according to the request
//digitalWrite(ledPin, value);
// Return the response
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println(""); // do not forget this one
client.println("<!DOCTYPE HTML>");
client.println("<html>");
client.print("Led pin is now: ");
if(value == HIGH) {
client.print("On");
} else {
client.print("Off");
}
client.println("
");
client.println("<a href=\"/LED=ON\"\"><button>Turn On </button></a>");
client.println("<a href=\"/LED=OFF\"\"><button>Turn Off </button></a>
");
client.println("</html>");
delay(1);
Serial.println("Client disonnected");
Serial.println("");
}