Last ESP8266 example for the day (credit goes here) : a web server turning a lef off and on.
#include <ESP8266WiFi.h> const char* ssid = "livebox0"; const char* password = "password"; int ledPin = 2; // GPIO2 WiFiServer server(80); void setup() { Serial.begin(115200); delay(10); pinMode(ledPin, OUTPUT); digitalWrite(ledPin, LOW); // Connect to WiFi network Serial.println(); Serial.println(); Serial.print("Connecting to "); Serial.println(ssid); WiFi.begin(ssid, password); while (WiFi.status() != WL_CONNECTED) { delay(500); Serial.print("."); } Serial.println(""); Serial.println("WiFi connected"); // Start the server server.begin(); Serial.println("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("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("<br><br>"); client.println("Click <a href=\"/LED=ON\">here</a> turn the LED on pin 2 ON<br>"); client.println("Click <a href=\"/LED=OFF\">here</a> turn the LED on pin 2 OFF<br>"); client.println("</html>"); delay(1); Serial.println("Client disonnected"); Serial.println(""); }
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