arduino-sketches/door-sensor/door-sensor.ino

#include <IRremote.hpp>
#include "melody.h"
#include "ledindicator.h"

#define IR_RECEIVE_PIN 7



const int DOOR_SENSOR_PIN = 13;



/* Connections:
*  Door Sensor: Gnd & 13
*  Buzzer: Gnd & 8
*  Led Receptor: 7 & Gnd & 5V
*/

int currentDoorState; // current state of door sensor
int lastDoorState;    // previous state of door sensor
bool isArmed = true;
bool muted = false;
bool ledOn = true;

void setup()
{

  Serial.begin(115200); // // Establish serial communication
  setupLeds();
  IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK); // Start the receiver
  pinMode(DOOR_SENSOR_PIN, INPUT_PULLUP);

  currentDoorState = digitalRead(DOOR_SENSOR_PIN); // read state

  isArmed = currentDoorState == LOW;
  Serial.println("Alarm is " + String(isArmed ? "Armed" : "Disarmed"));
  if(useTimerFreeTone){
    Serial.println("configure to use timer free tone");
  }

  showAlarm(false);

  
}
int lastCmd;
unsigned long lastTime;

void showAlarm(bool fired)
{
  if(!ledOn)
  {
    offLed();
    return;
  }
  if(fired)
  {
    if(isArmed)
    {
      showRed();
    }else{
      showYellow();
    }
    return;
  }
  if(isArmed)
  {
    showBlue();
  }else{
    showGreen();
  }
}

void loop() {

  handleDoor();

  handleIR();
  
}

void handleIR(){
  if (IrReceiver.decode()) {
      if(IrReceiver.decodedIRData.flags & IRDATA_FLAGS_IS_REPEAT)
      {
        IrReceiver.resume();
        return;
      }
      switch(IrReceiver.decodedIRData.command)
      {
        case 67:
          Serial.println("Play");
          isArmed=!isArmed;
          showAlarm(false);
          Serial.println("Alarm is " + String(isArmed ? "Armed" : "Disarmed"));
          // playTone();
          break;
        case 70:
          Serial.println("Led on/off");
          ledOn=!ledOn;
          showAlarm(false);
          break;
        default:
          Serial.print("unk: ");
          Serial.println(IrReceiver.decodedIRData.command);
      }
      
      //IrReceiver.printIRResultShort(&Serial); // Print complete received data in one line
      // lastTime = millis();
      // lastCmd=IrReceiver.decodedIRData.command;
      //Serial.println(IrReceiver.decodedIRData.command);

      IrReceiver.resume();
  }
}

void handleDoor(){
  lastDoorState = currentDoorState;              // save the last state
  currentDoorState  = digitalRead(DOOR_SENSOR_PIN); // read new state

  // state change: LOW -> HIGH
  if (lastDoorState == LOW && currentDoorState == HIGH) { 
    Serial.println("The door-opening event is detected");
    if(!isArmed)
    {
      Serial.println("Alarm is dissarmed, not fireing");
      delay(500);
      showAlarm(true);
      return;
    }
    Serial.println("Alarm is armed, firing");
    showAlarm(true);
    if(!muted)
      playTone();
  }
  else
  if (lastDoorState == HIGH && currentDoorState == LOW) { // state change: HIGH -> LOW
    delay(500);
    Serial.println("The door-closing event is detected");
    isArmed=true;
    showAlarm(false);
    // TODO: turn off alarm, light or send notification ...
  }
}