#include <WiFi.h>
// Replace with your network credentials
const char* ssid = "jio fi";
const char* password = "bennimobile";
WiFiServer server(80); // Set web server port number to 80
String header; // Variable to store the HTTP request
String output2State = "off"; // Auxiliar variables to store the current output state
const int output2 = 2; // Assign output variables to GPIO pins
void setup() {
Serial.begin(115200);
pinMode(output2, OUTPUT); // Initialize the output variables as outputs
digitalWrite(output2, LOW); // Set outputs to LOW
// Connect to Wi-Fi network with SSID and password
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
// Print local IP address and start web server
Serial.println("");
Serial.println("WiFi connected.");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
server.begin();
}
void loop(){
WiFiClient client = server.available(); // Listen for incoming clients
if (client) { // If a new client connects,
Serial.println("New Client."); // print a message out in the serial port
String currentLine = ""; // make a String to hold incoming data from the client
while (client.connected()) { // loop while the client's connected
if (client.available()) { // if there's bytes to read from the client,
char c = client.read(); // read a byte, then
Serial.write(c); // print it out the serial monitor
header += c;
if (c == '\n') { // if the byte is a newline character
// if the current line is blank, you got two newline characters in a row.
// that's the end of the client HTTP request, so send a response:
if (currentLine.length() == 0) {
// HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
// and a content-type so the client knows what's coming, then a blank line:
client.println("HTTP/1.1 200 OK");
client.println("Content-type:text/html");
client.println("Connection: close");
client.println();
// turns the GPIOs on and off
if (header.indexOf("GET /2/on") >= 0) {
Serial.println("GPIO 2 on");
output2State = "on";
digitalWrite(output2, HIGH);
} else if (header.indexOf("GET /2/off") >= 0) {
Serial.println("GPIO 2 off");
output2State = "off";
digitalWrite(output2, LOW);
}
// Display the HTML web page
client.println("<!DOCTYPE html><html>");
client.println("<head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">");
client.println("<link rel=\"icon\" href=\"data:,\">");
// CSS to style the on/off buttons
// Feel free to change the background-color and font-size attributes to fit your preferences
client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
client.println(".button { background-color: #4CAF50; border: none; color: white; padding: 16px 40px;");
client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
client.println(".button2 {background-color: #555555;}</style></head>");
// Web Page Heading
client.println("<body><h1> Circuit digest</h1>");
client.println("<body><h1>ESP32 Web Server: LED Blink</h1>");
// Display current state, and ON/OFF buttons for GPIO 2
client.println("<p>GPIO 2 - State " + output2State + "</p>");
// If the output2 State is off, it displays the ON button
if (output2State=="off") {
client.println("<p><a href=\"/2/on\"><button class=\"button\">ON</button></a></p>");
} else {
client.println("<p><a href=\"/2/off\"><button class=\"button button2\">OFF</button></a></p>");
}
client.println("</body></html>