wouterds/esp8266-led-control-webserver.ino

## esp8266-led-control-webserver.ino
#include <Wire.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>

#define LED D1

const char *ssid = "Wouter's Place";
const char *password = "";

ESP8266WebServer server(80);

const char HTML[] PROGMEM = R"=====(
<!DOCTYPE html>
<html>
<body>
<h1>Hello World</h1>
<button onclick="(function () { var xmlreq = new XMLHttpRequest(); xmlreq.open('GET', '/led-on'); xmlreq.send(); })()">On!</button>
<button onclick="(function () { var xmlreq = new XMLHttpRequest(); xmlreq.open('GET', '/led-off'); xmlreq.send(); })()">Off!</button>
</body>
</html>
)=====";

void handleRoot() {
  Serial.println("handleRoot");
  digitalWrite(LED_BUILTIN, LOW);
  String response = HTML;
  server.send(200, "text/html", response);
  digitalWrite(LED_BUILTIN, HIGH);
}

void handleLedOn() {
  Serial.println("handleLedOn");
  digitalWrite(LED, HIGH);
  server.send(204);
}

void handleLedOff() {
  Serial.println("handleLedOff");
  digitalWrite(LED, LOW);
  server.send(204);
}

void setup(void)
{
  Serial.begin(9600);
  Serial.println();

  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(LED, OUTPUT);

  Serial.print("Connecting to: ");
  Serial.println(ssid);

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED)
  {
    delay(250);
    Serial.print(".");
  }
  Serial.println();

  Serial.print("Connected to wifi, ip: ");
  Serial.println(WiFi.localIP());


  Serial.println("Starting server..");
  server.on("/", handleRoot);
  server.on("/led-on", handleLedOn);
  server.on("/led-off", handleLedOff);
  server.begin();
  Serial.println("Web server running!");
}

void loop()
{
  server.handleClient();
}
	#include <Wire.h>
	#include <ESP8266WiFi.h>
	#include <WiFiClient.h>
	#include <ESP8266WebServer.h>

	#define LED D1

	const char *ssid = "Wouter's Place";
	const char *password = "";

	ESP8266WebServer server(80);

	const char HTML[] PROGMEM = R"=====(
	<!DOCTYPE html>
	<html>
	<body>
	<h1>Hello World</h1>
	<button onclick="(function () { var xmlreq = new XMLHttpRequest(); xmlreq.open('GET', '/led-on'); xmlreq.send(); })()">On!</button>
	<button onclick="(function () { var xmlreq = new XMLHttpRequest(); xmlreq.open('GET', '/led-off'); xmlreq.send(); })()">Off!</button>
	</body>
	</html>
	)=====";

	void handleRoot() {
	Serial.println("handleRoot");
	digitalWrite(LED_BUILTIN, LOW);
	String response = HTML;
	server.send(200, "text/html", response);
	digitalWrite(LED_BUILTIN, HIGH);
	}

	void handleLedOn() {
	Serial.println("handleLedOn");
	digitalWrite(LED, HIGH);
	server.send(204);
	}

	void handleLedOff() {
	Serial.println("handleLedOff");
	digitalWrite(LED, LOW);
	server.send(204);
	}

	void setup(void)
	{
	Serial.begin(9600);
	Serial.println();

	pinMode(LED_BUILTIN, OUTPUT);
	pinMode(LED, OUTPUT);

	Serial.print("Connecting to: ");
	Serial.println(ssid);

	WiFi.begin(ssid, password);
	while (WiFi.status() != WL_CONNECTED)
	{
	delay(250);
	Serial.print(".");
	}
	Serial.println();

	Serial.print("Connected to wifi, ip: ");
	Serial.println(WiFi.localIP());


	Serial.println("Starting server..");
	server.on("/", handleRoot);
	server.on("/led-on", handleLedOn);
	server.on("/led-off", handleLedOff);
	server.begin();
	Serial.println("Web server running!");
	}

	void loop()
	{
	server.handleClient();
	}