Fridge door alarm, ESP8266, Arduino, Blynk, magnetic sensor

//Magnetic switch output to blynk by the David Karabalin 
/**************************************************************
 * Blynk links
 *
 *   Downloads, docs, tutorials: http://www.blynk.cc
 *   Blynk community:            http://community.blynk.cc
 *   Social networks:            http://www.fb.com/blynkapp
 *                               http://twitter.com/blynk_app
 *
 * Blynk library is licensed under MIT license
 * This example code is in public domain.
 *
 **************************************************************
 * This example shows how value can be pushed from Arduino to
 * the Blynk App.
 *
 * WARNING :
 * For this example you'll need SimpleTimer library:
 *   https://github.com/jfturcot/SimpleTimer
 *
 * App project setup:
 *   LED widged attched to V4
 *
 **************************************************************/

#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <SPI.h>
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>


// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "[Here goes your Auth Token]";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "[WiFi SSID]";
char pass[] = "[WiFi Password]";

int StatMagSwitch = 0; // switch status setting to 0 or LOW initially, door closed
int OpenDoorCycles = 0; //counts number of cycles as fridge door is open
unsigned long AlertTimeInSec = 60; // time after which to alert if fridge is open it's not accurate becase cycle will be long
unsigned long CycleTimeInSec = 15; // how often it measures the door sensor

#define MAGPIN 12          // pin for magnetic switch

BlynkTimer timer;          // Initializing blynk

WidgetLED ledDoor(V4);     //Setting led widget as virtual pin 4 first
// This function sends Arduino's up time every second to Virtual Pin (4).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App

void sendReadings()
{ StatMagSwitch = digitalRead(MAGPIN);  // Reading Magnetic switch status 

  if (StatMagSwitch == 1) // status is 1 if magnet is far away HIGH
  {
   OpenDoorCycles += 1; 
   ledDoor.on(); //turning on if magnet far away, i.e. Switch is HIGH
  } 
  else 
  {
   OpenDoorCycles = 0;
   ledDoor.off(); //turning off if magnet is close, i.e. Switch is LOW
  }
  
  if (OpenDoorCycles*CycleTimeInSec >= AlertTimeInSec)
  {
    Blynk.notify("ALERT! THE FRIDGE DOOR IS OPEN");
    OpenDoorCycles = 0;
   }
  
}

void setup()
{
  Serial.begin(9600); // See the connection status in Serial Monitor
  pinMode(MAGPIN, INPUT_PULLUP); // Defining magnetic switch pin as input_pullup
  Blynk.begin(auth, ssid, pass);

  // Setup a function to be called every second
  timer.setInterval(CycleTimeInSec*1000UL, sendReadings);
}

void loop()
{
  Blynk.run(); // Initiates Blynk
  timer.run(); // Initiates SimpleTimer
}