code.ino

#include <LiquidCrystal.h>
#include <Keypad.h>
#include <SoftwareSerial.h>
#include <EEPROM.h>
SoftwareSerial mySerial(9, 10);
const byte ROWS = 4;
const byte COLS = 4;
char hexaKeys[ROWS][COLS] = {
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {46, 47, 48, 49};
byte colPins[COLS] = {50, 51, 52, 53};
Keypad customKeypad = Keypad( makeKeymap(hexaKeys), rowPins, colPins, ROWS, COLS);
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
int reed1 = 22;
int reed2 = 23;
int reed3 = 24;
int buzzer = 34 ;
int reed1out = 28;
int reed2out = 29;
int reed3out = 30;
int pir = 31;
int lock_on = 0;
int al_on = 0;
int pass;
String mobile;
int inco = 0 ;
void setup() {
Serial.begin(9600);
mySerial.begin(9600);
pinMode ( reed1out , OUTPUT );
pinMode ( reed2out , OUTPUT );
pinMode ( reed3out , OUTPUT );
pinMode ( buzzer , OUTPUT );
pinMode ( reed1 , INPUT_PULLUP );
pinMode ( reed2 , INPUT_PULLUP );
pinMode ( reed3 , INPUT_PULLUP );
pinMode ( pir , INPUT );
digitalWrite(reed1out, LOW);
digitalWrite(reed2out, LOW);
digitalWrite(reed3out, LOW);
lcd.begin(20, 4);
lcd.setCursor(4, 1);
lcd.print("Burglar Alarm");
lcd.setCursor(6, 2);
lcd.print(" System");
phone_read();
pin_read();
delay(5000);
lcd.clear();
Serial.print(pass);
Serial.print("\n");
Serial.print(mobile);
display_home();
}
void loop() {
char choice = customKeypad.getKey();
if ( lock_on == 1) {
if ((digitalRead(reed1) != LOW || digitalRead(reed2) != LOW ||
digitalRead(reed3) != LOW || digitalRead(pir) == HIGH) && al_on == 0 ) {
al_on == 1;
digitalWrite(buzzer, HIGH);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Waiting...");
sms();
alarm();
}
}
if (al_on == 0)
if (choice == '#' )
{
int check = pin_entry();
if (check == 1)
unlock();
else
{
inco ++;
if(inco > 2 )
{
lcd.clear();
lcd.print("waiting...");
smsco();
inco = 0;
}
lcd.clear();
lcd.print("Press # to Unlock:");
loop();
}
}
}
void sms() {
mySerial.println("AT+CMGF=1");
delay(1000);
mySerial.println("AT+CMGS=\"+91" + mobile + "\"");
delay(1000);
mySerial.println("Intrusion Detected. Dial 100. ");
delay(1000);
mySerial.println((char)26);
delay(3000);
}
void smsco() {
mySerial.println("AT+CMGF=1");
delay(1000);
mySerial.println("AT+CMGS=\"+91" + mobile + "\"");
delay(1000);
mySerial.println("Three invalid attempts detected.");
delay(1000);
mySerial.println((char)26);
delay(3000);
}
void alarm() {
lcd.clear();
int flag = pin_entry();
if (flag == 1)
unlock();
else
{
lcd.clear();
lcd.setCursor(4, 1);
lcd.print("INVALID PIN !!");
lcd.setCursor(5, 2);
lcd.print("Try again !!");
delay(1500);
alarm();
}
}
void display_home () {
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("1.Lock");
lcd.setCursor(0, 1);
lcd.print("2.Change Pin");
lcd.setCursor(0, 2);
lcd.print("3.Change Mob Number ");
lcd.setCursor(0, 3);
lcd.print("Enter Choice : ");
lcd.setCursor(16, 3);
char choice = customKeypad.getKey();
while (choice == NO_KEY) {
choice = customKeypad.getKey();
if ( choice != NO_KEY) {
lcd.print(choice);
delay(2000);
switch (choice)
{
case '1' : lock();
break;
case '2' : change_pin();
break;
case '3' : change_number();
break;
default : error_msg();
break;
}
}
}
}
void lock() {
int check = pin_entry();
if ( check == 1) {
digitalWrite(reed1out, LOW);
digitalWrite(reed2out, LOW);
digitalWrite(reed3out, LOW);
lock_on = 1;
lcd.clear();
lcd.print("Press # to Unlock:");
}
else
error_msg();
}
int pin_entry() {
lcd.clear();
int flag = 0 , ai , temp = 0;
lcd.print("Enter Pin : ");
lcd.setCursor(0, 1);
char choice;
while ( flag < 4) {
choice = customKeypad.getKey();
if (choice != NO_KEY ) {
ai = choice - '0';
temp = (temp * 10) + ai;
flag += 1;
lcd.print("*");
}
}
if ( temp == pass)
return 1;
else
return 0;
}
void unlock() {
lock_on = 0;
al_on = 0;
digitalWrite(buzzer , LOW);
display_home();
}
void error_msg() {
lcd.clear();
lcd.setCursor(2, 0);
lcd.print("Invalid choice !!");
lcd.setCursor(5, 1);
lcd.print("Try Again !!");
delay(3000);
lcd.clear();
display_home();
}
void change_pin() {
lcd.clear();
int temp = 0 , temp1 = 0 , flag = 0 , ai;
lcd.print("Enter Pin : ");
lcd.setCursor(0, 1);
int choice;
while ( flag < 4) {
choice = customKeypad.getKey();
if (choice != NO_KEY ) {
ai = choice - '0';
temp = (temp * 10) + ai;
flag += 1;
lcd.print("*");
}
}
if ( temp == pass) {
lcd.clear();
lcd.print("Enter new pin : ");
lcd.setCursor(0, 1);
temp = 0;
flag = 0;
while ( flag < 4) {
choice = customKeypad.getKey();
if (choice != NO_KEY ) {
ai = choice - '0';
temp = (temp * 10) + ai;
flag += 1;
lcd.print("*");
}
}
lcd.setCursor(0, 2);
lcd.print("Confirm pin : ");
lcd.setCursor(0, 3);
flag = 0;
while ( flag < 4) {
choice = customKeypad.getKey();
if (choice != NO_KEY ) {
ai = choice - '0';
temp1 = (temp1 * 10) + ai;
flag += 1;
lcd.print("*");
}
}
if ( temp == temp1) {
pass = temp;
pin_write(pass);
lcd.clear();
lcd.setCursor(3, 1);
lcd.print("Pin Changed !!");
delay(5000);
lcd.clear();
}
else
error_msg();
}
else
error_msg();
display_home();
}
void change_number() {
lcd.clear();
int flag = 0 , ai , temp = 0, i;
lcd.print("Enter Pin : ");
lcd.setCursor(0, 1);
char choice;
char ch;
char num[12] , num1[12] ;
while ( flag < 4) {
choice = customKeypad.getKey();
if (choice != NO_KEY ) {
ai = choice - '0';
temp = (temp * 10) + ai;
flag += 1;
lcd.print("*");
}
}
if ( temp == pass) {
lcd.clear();
lcd.print("Enter new number : ");
lcd.setCursor(0, 1);
temp = 0;
flag = 0;
i = 0;
while ( flag < 10) {
ch = customKeypad.getKey();
if (ch != NO_KEY ) {
num[i] = ch; ;
flag += 1;
i += 1;
lcd.print(ch);
}
}
lcd.clear();
lcd.print("Confirm new number: ");
lcd.setCursor(0, 1);
flag = 0;
i = 0;
while ( flag < 10) {
ch = customKeypad.getKey();
if (ch != NO_KEY ) {
num1[i] = ch;
flag += 1;
i += 1;
lcd.print(ch);
}
}
Serial.print("\n");
Serial.print(num);
Serial.print("\n");
Serial.print(num1);
Serial.print("\n");
String n1(num);
String n2(num1);
if ( n1.equals(n2) ) {
phone_write(num1);
mobile = n1;
lcd.clear();
lcd.setCursor(2, 1);
lcd.print("Number Changed !!");
delay(5000);
lcd.clear();
}
else
error_msg();
}
else
error_msg();
display_home();
}
void phone_read()
{
int addr = 14;
int s;
char num[10];
int i = 0;
while (addr > 4 )
{
num[i] = EEPROM.read(addr) + '0' ;
i++;
addr--;
}
String st(num);
mobile = st;
}
void phone_write( char num[11] )
{
int s;
int i = 0;
int addr = 14;
while (addr > 4)
{
s = num[i] - '0';
EEPROM.write(addr, s);
i++;
addr--;
}
String st1(num);
mobile = st1;
}
void pin_write( int pas)
{
int s;
int addr = 3;
while (pas > 0)
{
s = pas % 10;
EEPROM.write(addr, s);
pas /= 10;
addr--;
}
pass = pas;
}
void pin_read()
{
int s;
int pas = 0;
int addr = 0;
while (addr < 4)
{
s = EEPROM.read(addr);
pas = pas * 10 + s;
addr++;
}
pass = pas;
}