//code sourced from [Bytes N Bits]
#include <SoftwareSerial.h>
#include <LiquidCrystal.h>


LiquidCrystal lcd (12,10,7,6,5,1);

#define led 3
const byte bt_RX = 2, bt_TX = 3, bt_Vin = 4;
const byte button_Vin = 9, button_Vout = 11;

SoftwareSerial BTSerial(bt_RX, bt_TX);


void setup() {
  // put your setup code here, to run once:
  lcd.begin(16,2);
  lcd.print("Hello World");
  
  for (int i = 0; i < 32; i++ ) {
    if (BTSerial.available()) Serial.write((char)BTSerial.read());
  }
  //Serial.println("");
  
}

void loop() {
  
  //writes "AT" to bluetooth when button is pressed
  if(digitalRead(button_Vout) == 0) { //press
    //Serial.print("AT");
    //BTSerial.write(":P\n");
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.print("Blutooth device is ON.");
    //lcd.print("Lcd is on");
    digitalWrite(led, HIGH);
    delay(100);
  }
  else if(digitalRead(button_Vout) == 1){
      digitalWrite(led,LOW);
      lcd.clear();
      lcd.setCursor(0,0);
      lcd.print("Disconnected");
    }
  delay(100);
   
}