examples/WiFiWebServer/WiFiWebServer.ino

/*
  WiFi Web Server

  A simple web server that shows the value of the analog input pins.
  using a WiFi 101 Shield.

  This example is written for a network using WPA encryption. For
  WEP or WPA, change the WiFi.begin() call accordingly.

  Circuit:
   WiFi 101 Shield attached
   Analog inputs attached to pins A0 through A5 (optional)

  created 13 July 2010
  by dlf (Metodo2 srl)
  modified 31 May 2012
  by Tom Igoe

*/

#include <SPI.h>
#include <WiFi101_Generic.h>      // https://github.com/khoih-prog/WiFi101_Generic

#include "arduino_secrets.h"
///////please enter your sensitive data in the Secret tab/arduino_secrets.h
char ssid[] = SECRET_SSID;        // your network SSID (name)
char pass[] = SECRET_PASS;        // your network password (use for WPA, or use as key for WEP)
int keyIndex = 0;                 // your network key Index number (needed only for WEP)

int status = WL_IDLE_STATUS;

WiFiServer server(80);

void setup()
{
  //Initialize serial and wait for port to open:
  Serial.begin(115200);

  while (!Serial && millis() < 5000);

  delay(500);

  // check for the presence of the shield:
  if (WiFi.status() == WL_NO_SHIELD)
  {
    Serial.println("WiFi 101 Shield not present");

    // don't continue:
    while (true);
  }

  // attempt to connect to WiFi network:
  while (status != WL_CONNECTED)
  {
    Serial.print("Attempting to connect to SSID: ");
    Serial.println(ssid);
    // Connect to WPA/WPA2 network. Change this line if using open or WEP network:
    status = WiFi.begin(ssid, pass);

    // wait 10 seconds for connection:
    delay(10000);
  }

  server.begin();
  // you're connected now, so print out the status:
  printWiFiStatus();
}


void loop()
{
  // listen for incoming clients
  WiFiClient client = server.available();

  if (client)
  {
    Serial.println("new client");
    // an HTTP request ends with a blank line
    bool currentLineIsBlank = true;

    while (client.connected())
    {
      if (client.available())
      {
        char c = client.read();
        Serial.write(c);

        // if you've gotten to the end of the line (received a newline
        // character) and the line is blank, the HTTP request has ended,
        // so you can send a reply
        if (c == '\n' && currentLineIsBlank)
        {
          // send a standard HTTP response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connection: close");  // the connection will be closed after completion of the response
          client.println("Refresh: 5");  // refresh the page automatically every 5 sec
          client.println();
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");

          // output the value of each analog input pin
          for (int analogChannel = 0; analogChannel < 6; analogChannel++)
          {
            int sensorReading = analogRead(analogChannel);
            client.print("analog input ");
            client.print(analogChannel);
            client.print(" is ");
            client.print(sensorReading);
            client.println("<br />");
          }

          client.println("</html>");
          break;
        }

        if (c == '\n')
        {
          // you're starting a new line
          currentLineIsBlank = true;
        }
        else if (c != '\r')
        {
          // you've gotten a character on the current line
          currentLineIsBlank = false;
        }
      }
    }

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

    // close the connection:
    client.stop();
    Serial.println("client disconnected");
  }
}


void printWiFiStatus()
{
  // print the SSID of the network you're attached to:
  Serial.print("SSID: ");
  Serial.println(WiFi.SSID());

  // print your WiFi 101 Shield's IP address:
  IPAddress ip = WiFi.localIP();
  Serial.print("IP Address: ");
  Serial.println(ip);

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print("signal strength (RSSI):");
  Serial.print(rssi);
  Serial.println(" dBm");
}