HomeAlarmSystem/final.ino at main · tkejr/HomeAlarmSystem · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
#include <Keypad.h>
char key_pressed = 0;
const byte columns = 4;
const byte rows = 1;
char fourKeys[rows][columns] = {{'1','2','3','4'}};
byte column_pins[columns] = {9,8,11,10};
byte row_pins[rows] = {6};
Keypad keypad_key = Keypad(makeKeymap(fourKeys), row_pins, column_pins, rows, columns);
char password[4] = {'1','2','3','4'};
char enteredPassword[4] = {};
int i =0;
const int buttonPin = 7;
int buttonState = 0;
int lastButtonState = 0;


//buzzer + magnetic sensor
int reed_switch = 4; // digital pin for reed switch
int buzzer = 5;
int reed_status; //status
float f = 500;

//0 means unarmed
int alarm_state = 0;
bool doorOpened = false;
bool noise = false;
void setup() {
  pinMode (13, OUTPUT); // define the digital output interface 13 feet
  pinMode(buzzer, OUTPUT); // buzzer
  pinMode(reed_switch, INPUT);
   pinMode(buttonPin, INPUT);
  // put your setup code here, to run once:
  pinMode(buttonPin, INPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  reed_status = digitalRead(reed_switch);
  bool valid = takeKeypadInput();
  if(valid && alarm_state==0){
    //changing it to armed
     Serial.println("Arming");
    alarm_state = 1;
    ActivateAlarm();
  }
  else if(valid && alarm_state==1){
    //changing it to unarmed
    alarm_state = 0;
    Serial.println("Unarming");
    deActivateAlarm();
  }

  if(alarm_state==1){
    ActivateAlarm();
  }
  else{
    deActivateAlarm();
  }


  delay(200);

}


void ActivateAlarm(){
  //reed_status -1 -> means far apart
  // reed status -0 -> means together
  Serial.println("Activate Alarm");
  Serial.println("Hello");
//  if (reed_status==1 && doorOpened == false || reed_status == 0 && doorOpened == true || reed_status==1 && doorOpened == true ){
//    doorOpened = true;
//    startNoise();
//  }


    //it means the door is getting opened the first time
    if(reed_status == 1  && doorOpened == false){
      doorOpened=true;
      startNoise();
    }

    //closed the door but still havent types in the code to deactivate
    if(reed_status == 0 && doorOpened == true){
      startNoise();
    }

   if(reed_status==0 && doorOpened == false){
    stopNoise();
    }

}

void deActivateAlarm(){
  doorOpened = false;
  Serial.println("Deactivate Alarm");
  stopNoise();
}


void startNoise(){
  Serial.println("start Noise");
//  tone(buzzer,500);
  tone(buzzer,440);
}

void stopNoise(){
 // noTone(buzzer);
  noTone(buzzer);
}


bool takeKeypadInput(){
  buttonState = digitalRead(buttonPin);
  key_pressed  = keypad_key.getKey();
  bool passCheck=true;

  if(key_pressed != NO_KEY){
    enteredPassword[i]=key_pressed;
    Serial.print(enteredPassword[i]);
    i++;
  }
  if(buttonState != lastButtonState){
    if(buttonState==1){
    for(int j = 0 ; j <4;j++){
      char temp1 = enteredPassword[j];
      char temp2 = password[j];
      enteredPassword[j]='0';
      if(temp1!=temp2){
        passCheck = false;
      };
    }
    if(passCheck){
      Serial.print("PERFECT PASS");
      Serial.println();
      return true;
    }

    else{
      Serial.print("WRONG PASS");
      Serial.println();
    }

    i=0;
    passCheck=true;
  }

 }
lastButtonState = buttonState;
return false;
}