xyzshantaram · December 27, 2018 16:03
diff --git a/Attention_ESP8266.cpp b/Attention_ESP8266.cpp
 #include <ESP8266WiFi.h>

 const char* ssid = "Ranjit";
 const char* password = "avantika98";
 const char* host = "IP OF THE ESP8266"; //it will tell you the IP once it starts up
                                        //just write it here afterwards and upload
 int ledPin = D3;


 WiFiServer server(80); //just pick any port number you like

 void setup() {
  Serial.begin(115200);
  delay(10);
 Serial.println(WiFi.localIP());
  // prepare GPIO2
  pinMode(ledPin, OUTPUT);
  digitalWrite(D3, 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.println(WiFi.localIP());
 }

 void loop() {
  // Check if a client has connected
  
  WiFiClient client = server.available();
  if (!client) {
    return;
  }

  // Wait until the client sends some data
  while (!client.available()) {
    delay(1);
  }

  // Read the first line of the request
  String req = client.readStringUntil('\r');
  client.flush();

  // Match the request
  if (req.indexOf("") != -10) {  //checks if you're on the main page
    if (req.indexOf("/ATTN") != -1) { //checks if you clicked the attn button
      toneAndBlink(4, ledPin, D0, 100, 5000);
      Serial.println("You want attention");
    }
  }

  else {
    Serial.println("invalid request");
   client.stop();
    return;
  }

  // Prepare the response
  String s = "HTTP/1.1 200 OK\r\n";
  s += "Content-Type: text/html\r\n\r\n";
  s += "<!DOCTYPE HTML>\r\n<html>\r\n";
  s += "<br><input type=\"button\" name=\"bl\" value=\"I Want Attention! \" onclick=\"location.href='/ATTN'\">";
  s += "<br><br><br>";
  s += "</html>\n";

  client.flush();


  // Send the response to the client
  client.print(s);
  delay(1);
 }

 void toneAndBlink(int no, int led, int buzzer, int dur, int freq) {
   for (int i = 0; i < no; i++) {
    digitalWrite(led, HIGH);
    tone(buzzer, freq);
    delay(dur);
    digitalWrite(led, LOW);
    noTone(buzzer);
    delay(dur);
   }
 }
	#include <ESP8266WiFi.h>

	const char* ssid = "Ranjit";
	const char* password = "avantika98";
	const char* host = "IP OF THE ESP8266"; //it will tell you the IP once it starts up
	//just write it here afterwards and upload
	int ledPin = D3;


	WiFiServer server(80); //just pick any port number you like

	void setup() {
	Serial.begin(115200);
	delay(10);
	Serial.println(WiFi.localIP());
	// prepare GPIO2
	pinMode(ledPin, OUTPUT);
	digitalWrite(D3, 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.println(WiFi.localIP());
	}

	void loop() {
	// Check if a client has connected

	WiFiClient client = server.available();
	if (!client) {
	return;
	}

	// Wait until the client sends some data
	while (!client.available()) {
	delay(1);
	}

	// Read the first line of the request
	String req = client.readStringUntil('\r');
	client.flush();

	// Match the request
	if (req.indexOf("") != -10) { //checks if you're on the main page
	if (req.indexOf("/ATTN") != -1) { //checks if you clicked the attn button
	toneAndBlink(4, ledPin, D0, 100, 5000);
	Serial.println("You want attention");
	}
	}

	else {
	Serial.println("invalid request");
	client.stop();
	return;
	}

	// Prepare the response
	String s = "HTTP/1.1 200 OK\r\n";
	s += "Content-Type: text/html\r\n\r\n";
	s += "<!DOCTYPE HTML>\r\n<html>\r\n";
	s += "<br><input type=\"button\" name=\"bl\" value=\"I Want Attention! \" onclick=\"location.href='/ATTN'\">";
	s += "<br><br><br>";
	s += "</html>\n";

	client.flush();


	// Send the response to the client
	client.print(s);
	delay(1);
	}

	void toneAndBlink(int no, int led, int buzzer, int dur, int freq) {
	for (int i = 0; i < no; i++) {
	digitalWrite(led, HIGH);
	tone(buzzer, freq);
	delay(dur);
	digitalWrite(led, LOW);
	noTone(buzzer);
	delay(dur);
	}
	}