Setting up NodeMCU as a WiFi Access point

/*
 * Author: Ram 
 * Version : 1.0 
 * Description : Code that helps to setup the ESP8266 based NodeMCU as an access point and also serves a webage to help control 
 * the on board LED.
 */
 
#include <esp8266wifi.h>
#include <esp8266webserver.h>
 
/*
 * SSID helps in providing the name of the WIFI that shows up when you seaarch for connecting .
 * Set them appropriately to anything that you desire.
*/
const char* ssid = "TenetNodeMCU";  // Enter SSID here
const char* password = "123456789";  //Enter Password here
 
/* Configure IP address that you would like the nodemcu to take up */
IPAddress local_ip(192,168,1,1);
IPAddress gateway(192,168,1,1);
IPAddress subnet(255,255,255,0);
 
ESP8266WebServer server(80);
 
uint8_t LEDonBoard = LED_BUILTIN;
bool LEDstatus = LOW;
 
void setup() {
  Serial.begin(115200);
  Serial.println("Boot up");
  pinMode(LEDonBoard, OUTPUT);
 
//initialize the AP mode for the ESPdevice 
  WiFi.softAP(ssid, password);
  WiFi.softAPConfig(local_ip, gateway, subnet);
  delay(100);
 
  server.on("/", handle_OnConnect);
  server.on("/led1on", handle_led1on);
  server.on("/led1off", handle_led1off);
  server.onNotFound(handle_NotFound);
 
  server.begin();
  Serial.println("HTTP server started");
}
void loop() {
  server.handleClient();
  if(LEDstatus)
  {digitalWrite(LEDonBoard, HIGH);}
  else
  {digitalWrite(LEDonBoard, LOW);}
 
}
 
void handle_OnConnect() {
  LEDstatus = LOW;
  Serial.println("LED Status: OFF");
  server.send(200, "text/html", SendHTML(LEDstatus)); 
}
 
void handle_led1on() {
  LEDstatus = HIGH;
  Serial.println("GPIO7 Status: ON");
  server.send(200, "text/html", SendHTML(true)); 
}
 
void handle_led1off() {
  LEDstatus = LOW;
  Serial.println("GPIO7 Status: OFF");
  server.send(200, "text/html", SendHTML(false)); 
}
 
 
 
void handle_NotFound(){
  server.send(404, "text/plain", "Not found");
}
 
String SendHTML(uint8_t led1stat){
  String ptr = " \n";
  ptr +="<meta name="\&quot;viewport\&quot;" content="\&quot;width=device-width," initial-scale="1.0," user-scalable="no\&quot;">\n";
  ptr +="<title>LED Control</title>\n";
  ptr +="<style>html { font-family: Helvetica; display: inline-block; margin: 0px auto; text-align: center;}\n";
  ptr +="body{margin-top: 50px;} h1 {color: #444444;margin: 50px auto 30px;} h3 {color: #444444;margin-bottom: 50px;}\n";
  ptr +=".button {display: block;width: 80px;background-color: #1abc9c;border: none;color: white;padding: 13px 30px;text-decoration: none;font-size: 25px;margin: 0px auto 35px;cursor: pointer;border-radius: 4px;}\n";
  ptr +=".button-on {background-color: #1abc9c;}\n";
  ptr +=".button-on:active {background-color: #16a085;}\n";
  ptr +=".button-off {background-color: #34495e;}\n";
  ptr +=".button-off:active {background-color: #2c3e50;}\n";
  ptr +="p {font-size: 14px;color: #888;margin-bottom: 10px;}\n";
  ptr +="</style>\n";
  ptr +="\n";
  ptr +="\n";
  ptr +="<h1>Tenet Technetronics Demo</h1>\n";
  ptr +="<h3>Using Access Point(AP) Mode</h3>\n";
 
   if(led1stat)
  {ptr +="<p>LED1 Status: ON</p><a class="\&quot;button" button-off\"="" href="\&quot;/led1off\&quot;">OFF</a>\n";}
  else
  {ptr +="<p>LED1 Status: OFF</p><a class="\&quot;button" button-on\"="" href="\&quot;/led1on\&quot;">ON</a>\n";}
 
 
  ptr +="\n";
  ptr +="\n";
  return ptr;
}
</esp8266webserver.h></esp8266wifi.h>