How to accept input from user after alarm is triggered - arduino

Question

So as of right now when I arm the system and move my hand in front of the PIR sensor it says system triggered how do i get it to take a password from the user to deactivate the system. Also when the system is deactive it should say on the screen "Not Active"
#include <LiquidCrystal.h>
#include <Password.h>
#include <Keypad.h>
//Password
Password password = Password("1234");
LiquidCrystal lcd(0, 1, 10, 11, 12, 13);
const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS][COLS] = { // Define the Keymap
{
'1','2','3','A' }
,
{
'4','5','6','B' }
,
{
'7','8','9','C' }
,
{
'*','0','#','D' }
};
byte rowPins[ROWS] = {9,8,7,6};
byte colPins[COLS] = {5,4,3,2};
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS);
int armed = 0;
const int pir1 = A4;
int sensorHit = 0;
int alarmStatus = 0;
int alarmActive = 0;
int zone = 0;
void setup() {
// put your setup code here, to run once:
lcd.begin(16,2);
pinMode(pir1, INPUT);
mainScreen();
keypad.addEventListener(keypadEvent);
}
void loop() {
// put your main code here, to run repeatedly:
keypad.getKey();
if(alarmActive == 1){
if(digitalRead(pir1) == HIGH){
zone = 0;
alarmTriggered();
}
}
}
void keypadEvent(KeypadEvent eKey){
switch (keypad.getState()){
case PRESSED:
lcd.print(eKey);
switch (eKey){
case '#': checkPassword(); break;
default:
password.append(eKey);
}
}
}
void alarmTriggered(){
password.reset();
alarmStatus = 1;
lcd.clear();
lcd.setCursor(0,0);
lcd.print("SYSTEM TRIGGERED");
lcd.print(0,1);
if(zone == 0){
lcd.print(" FRONT DOOR OPEN ");
}
}
void checkPassword(){
if (password.evaluate()){ //if code is correct:
lcd.clear(); //clear LCD
lcd.print("VALID PASSWORD"); //print message
password.reset(); //resets password after correct entry
delay(1500); //wait...
lcd.clear(); //clear
if (alarmStatus==0 && alarmActive == 0){ //if system is off (ie: disarmed)
lcd.print("ARMED!"); //display message
alarmActive=1; //system armed
alarmStatus=1;
delay(2000); //wait
lcd.clear(); //clear
lcd.setCursor(0, 0); //return to top left of LCD
lcd.print("Code to disarm:"); //back to where we began
}
else{
lcd.print("DISARMED!"); //display message
alarmActive=0; //system unarmed
alarmStatus=0;
delay(2000); //wait
lcd.clear(); //clear
lcd.setCursor(0, 0); //return to top left of LCD
lcd.print("Code to arm:"); //back to where we began
}
}
else{ //if password is incorrect:
lcd.clear();
lcd.print("INVALID PASSWORD");
password.reset(); //resets password after INCORRECT entry
delay(2000);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Retry Code:");
}
}
void mainScreen(){
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Enter Pin:");
}

Answer 1

You need an input device for entering the password. A simple example can be 10 switches where each switch represent 1 so our password has to be between 0 to 10. You add the switches values together and compare with your set password. The rest should be easy for you.