#include <SoftwareSerial.h>

SoftwareSerial HM10(2, 3); // RX = 2, TX = 3

#define LEDverde 9
#define LEDrosu 10
#define buzzer 6
#define claxon 7
#define avarii 8
#define PIR 12
             

//char statusArmare = "dezarmat";
int statusArmare;

char appData;
String inData = "";

void setup()
{
  Serial.begin(9600);
  Serial.println("HM10 serial started at 9600");
  HM10.begin(9600); // set HM10 serial at 9600 baud rate
  
  pinMode(claxon, OUTPUT); // releu claxon
  pinMode(avarii, OUTPUT); // releu avarii
  pinMode(PIR, INPUT); // PIR
  pinMode(4, INPUT); // PIR


  digitalWrite(LEDverde, HIGH); // switch ON GREEN LED

  digitalWrite(claxon, LOW); // switch OFF RELAY
  digitalWrite(avarii, LOW); // switch OFF RELAY
}

void loop()
{
  HM10.listen();  // listen the HM10 port
  while (Serial.available() > 0) {   // if HM10 sends something then read
    appData = Serial.read();
    inData = String(appData);  // save the data in string format
//    Serial.write(appData);
  }

  if (Serial.available()) {           // Read user input if available.
    delay(10);
    Serial.write(Serial.read());
  }

  //dezarmare
  if ( inData == "D") {
    statusArmare = 0;  // dezarmat
    Serial.println("dezarmat");
    HM10.println("dezarmat");
    digitalWrite(LEDrosu, LOW);
    digitalWrite(LEDverde, HIGH);
    digitalWrite(avarii, LOW);
    digitalWrite(claxon, LOW);
    claxoneaza();
    delay(100);
    claxoneaza();
  }
  //armare
  if ( inData == "A") {
    statusArmare = 1; //armat
    Serial.println("armat");
    HM10.println("armat");
    digitalWrite(LEDverde, LOW);
    digitalWrite(LEDrosu, HIGH);
    claxoneaza();
  } 

  //alarma
  if ( inData == ""){   
    if(statusArmare == 1){
      Serial.println("statusArmare = 1");
      while ((digitalRead(PIR)==HIGH) && (digitalRead(4) == LOW)){
        statusArmare = 2; //alarma
        Serial.println("statusArmare = 2");
        Serial.println("ALARMA - miscare");
        HM10.println("ALARMA - miscare");
        break;
      } 
      while (digitalRead(4) == HIGH) {
        statusArmare = 0;
        digitalWrite(avarii, LOW);
        Serial.println("statusArmare = 0");
        break;
      } 
    }
    
    if (statusArmare == 2){
      claxoneaza();
      
      digitalWrite(avarii, HIGH);   
      delay(500);
      if ((digitalRead(PIR)==LOW) || (inData = "D") || (digitalRead(4) == HIGH)) {
        statusArmare = 1; //alarma
        Serial.println("miscare oprita");
        HM10.println("miscare oprita");
      }
    }
  }

  inData = "";

    
  
}

//functii

int claxoneaza(){
  if (inData == "D") {
    statusArmare == 0;
  }
  tone(buzzer,2000,200);
  digitalWrite(claxon, HIGH);
  delay(200);
  digitalWrite(claxon, LOW);
}