Home Security System with ESP8266

1//Necessary libraries for Adafruit Dashboard and ESP8266
2#include <ESP8266WiFi.h>
3#include  "Adafruit_MQTT.h"
4#include "Adafruit_MQTT_Client.h"
5
6//SSID and Password  for Wifi
7#define WLAN_SSID       "******"
8#define WLAN_PASS       "*********"
9
10//Adafruit  Dashboard information(can be found under the "My Key" section of your dasboard)
11#define  AIO_SERVER      "io.adafruit.com"
12#define AIO_SERVERPORT  ****                   //  use 8883 for SSL
13#define AIO_USERNAME    "******" //Found on dashboard
14#define  AIO_KEY         "******" //Found on dashboard
15
16WiFiClient client;
17
18Adafruit_MQTT_Client  mqtt(&client, AIO_SERVER, AIO_SERVERPORT, AIO_USERNAME, AIO_KEY);
19
20//These  two lines are necessary to send data to Adafruit Dashboard
21Adafruit_MQTT_Publish  PIR = Adafruit_MQTT_Publish(&mqtt, AIO_USERNAME "/feeds/PIR Sensor");//PIR will  be used for PIR Sensor(motion)
22Adafruit_MQTT_Publish Reed = Adafruit_MQTT_Publish(&mqtt,  AIO_USERNAME "/feeds/Reed Switch");//Reed will be used for Reed Switch(door)
23
24//Pin  numbers for PIR Sensor(Sensor), Reed Switch(REED_PIN), and built-in led(LED_PIN)
25int  Sensor = 13;
26const int REED_PIN = 12;
27const int LED_PIN = 16; 
28
29void  MQTT_connect();
30
31void setup() {
32  // put your setup code here, to run once.  I have defined all of my inputs and outputs here, and have also started my serial  monitor along with WiFi Connectivity
33  
34  pinMode(Sensor, INPUT);
35  pinMode(REED_PIN,  INPUT_PULLUP);
36  pinMode(LED_PIN, OUTPUT);
37  Serial.begin(9600);
38
39  Serial.print("Connecting  to ");
40  Serial.println(WLAN_SSID);
41
42  WiFi.begin(WLAN_SSID, WLAN_PASS);
43  while (WiFi.status() != WL_CONNECTED) {
44    delay(500);
45    Serial.print(".");
46  }
47  Serial.println();
48  Serial.println("WiFi connected");
49  Serial.println("IP  address: "); Serial.println(WiFi.localIP());
50
51}
52
53uint32_t x = 0;
54
55void  loop() {
56  //This loop contains the main part of our program - it will be run  over and over again.
57  MQTT_connect();
58  Serial.print(F("\
59Sending MS data  "));
60  Serial.print(x);
61  Serial.print("...");
62
63  int result = digitalRead(Sensor);//  Read the state of the PIR Sensor
64  int sts = digitalRead(REED_PIN); // Read the  state of the reed switch
65  if (sts == LOW) // If the pin reads low, the switch  is closed and thus the door is closed as well.
66  {
67    Serial.println("Door  Closed");
68    digitalWrite(LED_PIN, LOW); 
69
70  }
71  else //If the pin  is not low, it is high, which means the switch and door are open
72  {
73    Serial.println("Door  Open");
74    Reed.publish("Door Open"); //Publish data to Adafruit Dashboard
75    digitalWrite(LED_PIN, HIGH);
76  }
77
78
79  Serial.println(result);
80  if (result == HIGH) { //If result it high, it means motion has been detected
81    Serial.println("Motion detected"); 
82    PIR.publish("Motion Detected");//Publish  data to Adafruit Dashboard
83  }
84  else { //if result is not high, no motion  is being detected
85    Serial.println("No Motion Detected");
86    delay(1000);
87  }
88}
89
90//Function for necessary MQTT Connections
91void MQTT_connect()  {
92  int8_t ret;
93
94
95  if (mqtt.connected()) {
96    return;
97  }
98
99  Serial.print("Connecting to MQTT... ");
100
101  uint8_t retries = 3;
102  while  ((ret = mqtt.connect()) != 0) { 
103    Serial.println(mqtt.connectErrorString(ret));
104    Serial.println("Retrying MQTT connection in 5 seconds...");
105    mqtt.disconnect();
106    delay(5000); 
107    retries--;
108    if (retries == 0) {
109      while (1);
110    }
111  }
112  Serial.println("MQTT Connected!");
113}
114