bt

#include <SPI.h>
#include <Wire.h>
#include <SoftwareSerial.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x3F, 20, 4);
boolean BTconnected = false;

void setup()   {
   Wire.begin(4,0);
   pinMode(14, INPUT_PULLUP);
  lcd.begin();
  lcd.clear();
  lcd.setCursor(4,0);
  lcd.print("SETUP START");
  delay(3000);
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(digitalRead(14));
  lcd.print("Wait for BT...");
      while (!BTconnected)
    {
      if ( digitalRead(14)==HIGH)  { BTconnected = true;};
    }}
    void loop(){
        lcd.clear();
      lcd.setCursor(3,3);
      lcd.print("CONNECTED");
    }