Update Arduino_SecuritySystem.ino

Arduino_SecuritySystem.ino

+#include <SoftwareSerial.h>
+// Connect your Bluetooth Module to D8
+
+#define RxD         8
+#define TxD         9
+ 
+#define PIR_MOTION_SENSOR 2
+
+const int ledPin = 3;     // the number of the LED pin, D3
+const int buttonPin = 4;  // the number of the pushbutton pin, D4
+int buttonState;          // the state of the button
+int ledState = LOW;       // the state of the LED
+bool systemState = false;
+ 
+SoftwareSerial blueToothSerial(RxD,TxD);
+ 
+void setup()
+{
+ 
+    Serial.begin(9600);
+    while(!Serial){
+    ;
+    }
+    Serial.print("Started\n");
+    pinMode(PIR_MOTION_SENSOR, INPUT);
+    pinMode(RxD, INPUT);
+    pinMode(TxD, OUTPUT);
+    
+    setupBlueToothConnection();
+    Serial.flush();
+    blueToothSerial.flush();
+    
+    pinMode(buttonPin, INPUT);
+    pinMode(PIR_MOTION_SENSOR, INPUT);
+    pinMode(ledPin, OUTPUT);
+    digitalWrite(ledPin, ledState);
+}
+ 
+void loop()
+{
+    char recvChar;
+    static unsigned char state = 0;
+    if(blueToothSerial.available()>0){
+      char newState = blueToothSerial.read();
+      Serial.println("State Change: " + String(newState));
+      if (String(newState) == "0"){
+        systemState = false;
+      }
+      if (String(newState) == "1") {
+        systemState = true;
+      }
+    }
+    
+    if(digitalRead(PIR_MOTION_SENSOR) && systemState == true){
+        blueToothSerial.println("Movement");
+        Serial.println("Movement");
+    }
+
+    buttonState = digitalRead(buttonPin);
+    
+    // button not clicked
+    if (buttonState == HIGH){
+      if (systemState == false) {
+        analogWrite(ledPin, 1);  
+        Serial.println("off");
+        blueToothSerial.println("off");  
+      }
+      else {
+        analogWrite(ledPin, 255);
+        Serial.println("on");
+        blueToothSerial.println("on");  
+      }
+    }
+    // button clicked
+    else {
+      Serial.println("============== buttonClick");
+      if (systemState == false) {
+        Serial.println("============== turn system on");
+        systemState = true;
+      } else {
+        Serial.println("============== turn system off");
+        systemState = false;
+      }
+    }
+ delay(200);
+}
+ 
+/***************************************************************************
+* Function Name: setupBlueToothConnection
+* Description:  initilizing bluetooth connction
+***************************************************************************/
+void setupBlueToothConnection()
+{ 
+  blueToothSerial.begin(9600);
+  
+  blueToothSerial.print("AT");
+  delay(2000); 
+  
+  blueToothSerial.print("AT+BAUD4");
+  delay(2000);
+ 
+  blueToothSerial.print("AT+ROLES");
+  delay(2000); 
+  
+  blueToothSerial.print("AT+NAMEBluegum");   // set the bluetooth name as "Slave" ,the length of bluetooth name must less than 12 characters.
+  delay(2000);
+  
+  blueToothSerial.print("AT+AUTH1"); 
+  delay(2000);
+ 
+  blueToothSerial.flush();
+  Serial.print("Finished\n");
+}