SimpleWebServerWiFi.ino

/****************************************************************************************************************************
  SimpleWebServerWiFi.ino

  WiFi Web Server LED Blink

  A simple web server that lets you blink an LED via the web.
  This sketch will print the IP address of your WiFi module (once connected)
  to the Serial monitor. From there, you can open that address in a web browser
  to turn on and off the LED on pin 9.

  If the IP address of your board is yourAddress:
  http://yourAddress/H turns the LED on
  http://yourAddress/L turns it off

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

  Circuit:
   Board with NINA module (Arduino MKR WiFi 1010, MKR VIDOR 4000 and UNO WiFi Rev.2)
   LED attached to pin 9

  created 25 Nov 2012
  by Tom Igoe

  Based on and modified from WiFiNINA library https://www.arduino.cc/en/Reference/WiFiNINA
  to support nRF52, SAMD21/SAMD51, STM32F/L/H/G/WB/MP1, Teensy, etc. boards besides Nano-33 IoT, MKRWIFI1010, MKRVIDOR400, etc.

  Built by Khoi Hoang https://github.com/khoih-prog/WiFiNINA_Generic
  Licensed under MIT license

  Copyright (c) 2018 Arduino SA. All rights reserved.
  Copyright (c) 2011-2014 Arduino LLC.  All right reserved.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*****************************************************************************************************************************/

#include "defines.h"
#include "arduino_secrets.h"

// To eliminate FW warning when using not latest nina-fw version
// To use whenever WiFi101-FirmwareUpdater-Plugin is not sync'ed with nina-fw version
#define WIFI_FIRMWARE_LATEST_VERSION        "1.4.8"

#include <SPI.h>

#if USING_WIFI101
  #include <WiFi101_Generic.h>
#else
  #include <WiFiNINA_Generic.h>
#endif

///////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), length must be 8+

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);

  Serial.print(F("\nStart SimpleWebServerWiFi on "));
  Serial.println(BOARD_NAME);

// check for the WiFi module:
#if USING_WIFI101
  if (WiFi.status() == WL_NO_SHIELD)
#else
  Serial.println(WIFININA_GENERIC_VERSION);
  
  if (WiFi.status() == WL_NO_MODULE)
#endif
  {
    Serial.println(F("Communication with WiFi module failed!"));

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

  String fv = WiFi.firmwareVersion();

  if (fv < WIFI_FIRMWARE_LATEST_VERSION)
  {
    Serial.print(F("Your current firmware NINA FW v"));
    Serial.println(fv);
    Serial.print(F("Please upgrade the firmware to NINA FW v"));
    Serial.println(WIFI_FIRMWARE_LATEST_VERSION);
  }

  // attempt to connect to WiFi network:
  while (status != WL_CONNECTED)
  {
    Serial.print(F("Attempting to connect to Network named: "));
    Serial.println(ssid);                   // print the network name (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();                           // start the web server on port 80
  printWiFiStatus();                        // you're connected now, so print out the status
}

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

  if (client)
  {
    // if you get a client,
    Serial.println(F("New client"));           // print a message out the serial port
    String currentLine = "";                // make a String to hold incoming data from the client

    while (client.connected())
    {
      // loop while the client's connected
      if (client.available())
      {
        // if there's bytes to read from the client,
        char c = client.read();             // read a byte, then
        Serial.write(c);                    // print it out the serial monitor

        if (c == '\n')
        {
          // if the byte is a newline character
          // if the current line is blank, you got two newline characters in a row.
          // that's the end of the client HTTP request, so send a response:
          if (currentLine.length() == 0)
          {
            // HTTP headers always start with a response code (e.g. HTTP/1.1 200 OK)
            // and a content-type so the client knows what's coming, then a blank line:
            client.println("HTTP/1.1 200 OK");
            client.println("Content-type:text/html");
            client.println();

            // the content of the HTTP response follows the header:
            client.print("Click <a href=\"/H\">here</a> turn the LED on pin 9 on<br>");
            client.print("Click <a href=\"/L\">here</a> turn the LED on pin 9 off<br>");

            // The HTTP response ends with another blank line:
            client.println();
            // break out of the while loop:
            break;
          }
          else
          {
            // if you got a newline, then clear currentLine:
            currentLine = "";
          }
        }
        else if (c != '\r')
        {
          // if you got anything else but a carriage return character,
          currentLine += c;      // add it to the end of the currentLine
        }

        // Check to see if the client request was "GET /H" or "GET /L":
        if (currentLine.endsWith("GET /H"))
        {
          digitalWrite(LED_BUILTIN, HIGH);               // GET /H turns the LED on
        }

        if (currentLine.endsWith("GET /L"))
        {
          digitalWrite(LED_BUILTIN, LOW);                // GET /L turns the LED off
        }
      }
    }

    // close the connection:
    client.stop();
    Serial.println(F("Client disonnected"));
  }
}

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

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

  // print the received signal strength:
  long rssi = WiFi.RSSI();
  Serial.print(F("Signal strength (RSSI):"));
  Serial.print(rssi);
  Serial.println(F(" dBm"));
  // print where to go in a browser:
  Serial.print(F("To see this page in action, open a browser to http://"));
  Serial.println(ip);
}