CONTROLLING ESP12E NODEMCU WITH LED FROM WEBSITE (LOCAL NETWORK) – Part1

CONTROLLING ESP12E NODEMCU WITH LED FROM WEBSITE (LOCAL NETWORK) – Part1

/*******************************************************************

This will turn on the LED connected to pin D1 of ESP12E NODEMCU.

You can replace the pin 'D1' to 'D2' and 'D3' respectively.

'1' represents 'on' and '0' represents off.

http://Your IP Address (xxx.xxx.x.x)/D1/1 - to turn on the led

http://Your IP Address (xxx.xxx.x.x)/D1/0 - to turn off the led.

*******************************************************************/

#include <ESP8266WiFi.h>

//const char* ssid = "your SSID or hotspot or wifi name";

//const char* password = "password of hotspot or wifi or ssid";

const char* ssid = "PTS-2F";   

const char* password = "";    

// Create an instance of the server

// specify the port to listen on as an argument

WiFiServer server(80);

 

void setup() {

  Serial.begin(115200);

  delay(10);

 

  pinMode(D1, OUTPUT);

  pinMode(D2, OUTPUT);

  pinMode(D3, OUTPUT);

  for (int i=0; i <= 10; i++){

    digitalWrite(D1, 1);

    digitalWrite(D2, 1);

    digitalWrite(D3, 1);

    delay (500);

    digitalWrite(D1, 0);

    digitalWrite(D2, 0);

    digitalWrite(D3, 0);

    delay (500);

  }  

  // 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

  Serial.println("new client");

  while(!client.available()){

    delay(1);

  }

  

  // Read the first line of the request

  String req = client.readStringUntil('\r');

  Serial.println(req);

  client.flush();

  

  // Match the request

  int val;

  String m;

  if (req.indexOf("/D1/0") != -1){

    m = "D1 is Low";

    digitalWrite(D1, 0);

  }

  else if (req.indexOf("/D1/1") != -1){

    m = "D1 is High";

    digitalWrite(D1, 1);

  }

  else if (req.indexOf("/D2/0") != -1){

    m = "D2 is Low";

    digitalWrite(D2, 0);

  }

  else if (req.indexOf("/D2/1") != -1){

    m = "D2 is High";

    digitalWrite(D2, 1);

  }

  else if (req.indexOf("/D3/0") != -1){

    m = "D3 is Low";

    digitalWrite(D3, 0);

  }

  else if (req.indexOf("/D3/1") != -1){

    m = "D3 is High";

    digitalWrite(D3, 1);

  }

  else {

    Serial.println("invalid request");

    client.stop();

    return;

  }

  

  client.flush();

 

  // Prepare the response

  String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<head><meta http-equiv=\"Access-Control-Allow-Origin\" content=\"*\"></head>\n<html>\r\n" +m;

  s += "</html>\n";

 

  // Send the response to the client

  client.print(s);

  delay(1);

  Serial.println("Client disonnected");

 

  // The client will actually be disconnected 

  // when the function returns and 'client' object is detroyed

}