#include <ESP8266WiFi.h>
const char* ssid = "Nisalhe";
const char* password = "12341234";
WiFiServer server(80);
String header;
String LED1_State = "off";
String LED2_State = "off";
const int LED_1 = D1;
const int LED_2 = D2;
// Current time
unsigned long currentTime = millis();
// Previous time
unsigned long previousTime = 0;
// Define timeout time in milliseconds (example: 2000ms = 2s)
const long timeoutTime = 2000;
void setup() {
Serial.begin(115200);
pinMode(LED_1, OUTPUT);
pinMode(LED_2, OUTPUT);
digitalWrite(LED_1, LOW);
digitalWrite(LED_2, 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.print("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
currentTime = millis();
previousTime = currentTime;
while (client.connected() && currentTime - previousTime <= timeoutTime) { // loop while the client's connected
currentTime = millis();
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 LEDs on and off
if (header.indexOf("GET /1/on") >= 0) {
Serial.println("LED 1 on");
LED1_State = "on";
digitalWrite(LED_1, HIGH);
} else if (header.indexOf("GET /1/off") >= 0) {
Serial.println("LED 1 off");
LED1_State = "off";
digitalWrite(LED_1, LOW);
} else if (header.indexOf("GET /2/on") >= 0) {
Serial.println("LED 2 on");
LED2_State = "on";
digitalWrite(LED_2, HIGH);
} else if (header.indexOf("GET /2/off") >= 0) {
Serial.println("LED 2 off");
LED2_State = "off";
digitalWrite(LED_2, 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:,\">");
client.println("<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}");
client.println(".head { position: fixed; left: 0; top: 0; width: 100%; background-color: #34495e; font-size:35px; font-weight: bold; color: white; text-align: center; }");
client.println(".footer { position: fixed; left: 0; bottom: 0; background-color: #34495e; width: 100%; color: white; text-align: center;}");
client.println(".button { background-color: #c0392b; border: none; color: white; padding: 16px 40px; width: 150px;");
client.println("text-decoration: none; font-size: 30px; margin: 2px; cursor: pointer;}");
client.println(".button2 {background-color: #77878A; width: 150px;}</style></head>");
// Web Page Heading
client.println("<div class=\"head\"> <p>NodeMCU Tutorial 3</p> </div></br></br></br></br></br></br></br>");
client.println("<h3>LED 1</h3>");
// If the LED1_State is off, it displays the ON button
if (LED1_State=="off") {
client.println("<p><a href=\"/1/on\"><button class=\"button button2\">OFF</button></a></p>");
} else {
client.println("<p><a href=\"/1/off\"><button class=\"button\">ON </button></a></p>");
}
// Display current state, and ON/OFF buttons for GPIO 4
client.println("<h3>LED 2</h3>");
// If the LED2_State is off, it displays the ON button
if (LED2_State=="off") {
client.println("<p><a href=\"/2/on\"><button class=\"button button2\">OFF</button></a></p>");
} else {
client.println("<p><a href=\"/2/off\"><button class=\"button \">ON </button></a></p>");
}
client.println("<a href=\"http://nisalhe.com/\"><div class=\"footer\"> <p>More info - www.nisalhe.com</p> </div></a>");
client.println("</body></html>");
client.println();
break;
} else {
currentLine = "";
}
} else if (c != '\r') { // if you got anything else but a carriage return character,
currentLine += c; // add it to the end of the currentLine
}
}
}
// Clear the header variable
header = "";
// Close the connection
client.stop();
Serial.println("Client disconnected.");
Serial.println("");
}
}