#include <ESP8266WiFi.h>

 

const char *ssid = "Charlie Testing AP";

const char *password = "12345678";

WiFiServer server(80);

void setup()

{

  Serial.begin(115200);

  Serial.println();

 

  Serial.print("Setting soft-AP ... ");

   

IPAddress softLocal(192,168,128,1);  

IPAddress softGateway(192,168,128,1);

IPAddress softSubnet(255,255,255,0);

 

WiFi.softAPConfig(softLocal, softGateway, softSubnet);  

 

    WiFi.softAP(ssid, password);

   

   IPAddress myIP = WiFi.softAPIP();

  Serial.print("AP IP address: ");

  Serial.println(myIP);

 server.begin();

 Serial.printf("Web server started, open %s in a web browser\n", WiFi.localIP().toString().c_str());

 

}

 

void loop()

{

 WiFiClient client = server.available();

 if (client)

  {

    Serial.println("\n[Client connected]");

    while (client.connected())

    {

      // read line by line what the client (web browser) is requesting

      if (client.available())

      {

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

        Serial.print(line);

        // wait for end of client's request, that is marked with an empty line

        if (line.length() == 1 && line[0] == '\n')

        {

          client.println(prepareHtmlPage());

 

           

          break;

        }

      }

    }

    delay(1); // give the web browser time to receive the data

 

    // close the connection:

    client.stop();

    Serial.println("[Client disonnected]");

  }

 

 

}

 

// prepare a web page to be send to a client (web browser)

String prepareHtmlPage()

{

  String htmlPage =

     String("HTTP/1.1 200 OK\r\n") +

            "Content-Type: text/html\r\n" +

            "Connection: close\r\n" +  // the connection will be closed after completion of the response

            "Refresh: 5\r\n" +  // refresh the page automatically every 5 sec

            "\r\n" +

            "<!DOCTYPE HTML>" +

            "<html>" +

            "Analog input:  " + String(analogRead(A0)) +

            "</html>" +

            "\r\n";

  return htmlPage;<br>}