/* 25/10/2021
 *  alarmLedv1
 * 
 *  create 2 functions, 
 *  
 *  one to sound alarm
 *  one to warn operator to enter passcode
 *  
 * 
 *  pins
 *  11 buzzer
 *  13 led
 */
const int buzzerPin = 11;
const int ledPin = 13;

int soundAlarm = 0;//0 alarm is off, 1 alarm is on
int alarmState;//used to flash the leds/tone
unsigned long alarmTimer;
int alarmDelay = 1000;
void myAlarm(){
  if(soundAlarm > 0){//sound alarm
    if(millis() > alarmTimer){
      alarmTimer = millis() + alarmDelay;
      if(alarmState < 1){
        alarmState = 1;
        digitalWrite(ledPin,HIGH); 
        tone(buzzerPin,500);
      }else{
        alarmState = 0;
        digitalWrite(ledPin,LOW); 
        tone(buzzerPin,1000);   
      }
    }
  }
}

int soundWarn = 0;//0 warn is off, 1 warn is on
int warnState;//used to flash the leds/tone
unsigned long warnTimer;
void myWarn(){
  if(soundWarn > 0){//sound alarm
    if(millis() > warnTimer){
      if(warnState < 1){
        warnState = 1;
        digitalWrite(ledPin,HIGH); 
        tone(buzzerPin,500);
        warnTimer = millis() + 100;   
      }else{
        warnState = 0; 
        digitalWrite(ledPin,LOW); 
        noTone(buzzerPin);
        warnTimer = millis() + 500;  
      }
    }    
  }
}

void setup() {
  Serial.begin(9600);
  Serial.println("alarmLedv1...");
  pinMode(buzzerPin,OUTPUT);
  pinMode(ledPin,OUTPUT);

}

void loop() {
  
  myAlarm();//sets alarm sound off
  myWarn();//sets passcode warning sound

}