HI
If possible can someone direct me in the right direction regarding my code for an alarm on a Mega 2560. I want to make an alarm that turns on when a remote is pushed (closing relay on receiver) and disarm when button is pushed again. I tried the push button examples but having no luck. (most of my code is adapted from examples on the net)
//Libraries
#include <LiquidCrystal.h>
#include "NewTone.h"
/*--------------------------CONSTANTS-------------------------*/
const int buttonPin = 10; // the pin that the pushbutton is attached to
int buttonState = 0; // current state of the button
int lastButtonState = 0; // previous state of the button
const int buzzer = 29; //Buzzer/small speaker
const int greenLED = 30;
const int redLED = 31;
const int pirBraai = 10; //PIR Lounge
const int pirLounge = 11; //PIR Lounge
const int doorMagSen = 12; //Back Door magnetic sensor
const int garageMagSen = 24; //PIR BRaai
//const int sirenPin = 35;
const int relay1 = 23; // Outside Light
const int relay2 = 22; //Siren Relay
//LiquidCrystal lcd(8, 9, 4, 5, 6, 7); //lcd ((RS, E, D4, D5, D6, D7)
const int rs = 8, en = 9, d4 = 7, d5 = 6, d6 = 5, d7 = 4;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
/*--------------------------VARIABLES------------------------*/
boolean armed = false; //Variable for system state (armed:true / unarmed:false)
/**********************************************************************************/
void setup() {
lcd.begin(16, 2); //Setup the LCD's number of columns and rows
pinMode(doorMagSen, INPUT); //Set all magnetic sensors as input with internal pullup resistor
pinMode(pirBraai, INPUT);
pinMode(pirLounge, INPUT);
pinMode(garageMagSen, INPUT);
pinMode(redLED, OUTPUT);
pinMode(greenLED, OUTPUT);
pinMode(buttonPin, INPUT);
pinMode(relay1, OUTPUT);
pinMode(relay2, OUTPUT);
}
void loop() { //Main loop
buttonState = digitalRead(buttonPin); //Run function to activate the system
if (buttonState == LOW) {
NewTone(buzzer, 500, 200);
systemIsArmed();
}
buttonState = digitalRead(buttonPin); //Run fuction to de activate the system
if (buttonState == HIGH) {
NewTone(buzzer, 500, 200);
systemIsUnarmed();
}
}
/********************************FUNCTIONS************************************/
//While system is unarmed
void systemIsUnarmed() {
int screenMsg = 0;
lcd.clear(); //Clear lcd
unsigned long previousMillis = 0; //To make a delay by using millis() function
const long interval = 5000; //delay will be 5 sec.
//every "page"-msg of lcd will change every 5 sec
while (!armed) { //While system is unarmed do...
unsigned long currentMillis = millis(); //Store the current run-time of the system (millis function)
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis;
if (screenMsg == 0) { //First page-message of lcd
lcd.setCursor(0, 0);
lcd.print("SYSTEM ALARM OFF");
lcd.setCursor(0, 1);
lcd.print("----------------");
screenMsg = 1;
}
else { //Second page-message of lcd
lcd.setCursor(0, 0);
lcd.print("PRESS TO ARM ALARM ");
lcd.setCursor(0, 1);
digitalWrite(redLED, LOW);
digitalWrite(greenLED, HIGH);
digitalWrite(relay1, LOW);
digitalWrite(relay2, LOW);
screenMsg = 0;
}
}
}
}
//While system is armed
void systemIsArmed() {
retry: //label for goto
lcd.clear();
int count = 25; //Count 20sec before activate the system
unsigned long previousMillis = 0;
const long interval = 1000;
while (!armed) {
//While system is unarmed - for 10sed do...
lcd.setCursor(0, 0);
lcd.print(" SYSTEM WILL BE "); //Print message to lcd with 10 sec timer
lcd.setCursor(0, 1);
lcd.print(" ARMED IN ");
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis;
//Screen counter 10sec
if (count > 1) {
count--; //Countdown timer
}
else {
armed = true; //Activate the system!
break;
}
}
lcd.setCursor(12, 1);
lcd.print(count); //show the timer at lcd second line 13 possition
//For screen counter - 20sec
if (count >= 10) {
lcd.setCursor(12, 1);
lcd.print(count); //print countdown timer at lcd
}
else { //catch '0'bellow 10 (eg 09)
lcd.setCursor(12, 1);
lcd.print(" ");
lcd.print(count);
}
}
while (armed) { //While system is armed do...
lcd.setCursor(0, 0);
lcd.print("SYSTEM IS ARMED!");
lcd.setCursor(0, 1);
lcd.print("----------------");
int door = digitalRead(doorMagSen); //Back door sensor
int garage = digitalRead(garageMagSen);
int pirBraai = digitalRead(pirBraai);
int pirLounge = digitalRead(pirLounge);
digitalWrite(redLED, HIGH);
digitalWrite(greenLED, LOW);
digitalWrite(relay1, HIGH);
digitalWrite(relay2, LOW);
}
//Check values
if (pirBraai == LOW) {
alarmFunction(); //Call alarm!
}
if (garageMagSen == LOW) {
alarmFunction(); //Call alarm!
}
//Pir Lounge
if (pirLounge == LOW) { //Disarm the system with correct password
alarmFunction(); //Call alarm!
}
//Back Door
if (doorMagSen == LOW) { //call alarm!
alarmFunction(); //Call alarm!
}
}
//Alarm
void alarmFunction() {
digitalWrite(relay2 , HIGH);
unsigned long previousMillis = 0;
const long interval = 500;
boolean buzzerState = false;
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis; //Play a beep NewTone every 0.5 second
if (!buzzerState) {
NewTone(buzzer, 700);
buzzerState = true;
}
else {
noNewTone(buzzer);
buzzerState = false;
}
}
lcd.setCursor(0, 0);
lcd.print(" ALARM TRIGGERED ");
lcd.setCursor(0, 1);
lcd.print(" PRESS REMOTE ");
}
