#include <SoftwareSerial.h>
SoftwareSerial BT(2, 3);
// creates a "virtual" serial port/UART
// connect BT module TX to D10
// connect BT module RX to D11
// connect BT Vcc to 5V, GND to GND
void setup()
{
  Serial.begin(9600);
  // set digital pin to control as an output
  pinMode(13, OUTPUT);
  pinMode(7,INPUT);
  // set the data rate for the SoftwareSerial port
  BT.begin(9600);
  // Send test message to other device
  BT.println("Hello from HC06");
}
char a; // stores incoming character from other device
float n;
void loop()
{

  if (BT.available())
  // if text arrived in from BT serial...
  {

    n = analogRead(A5)*5.0/1023.0;
    a=(BT.read());
    if (a=='1')
    {
      digitalWrite(13, HIGH);
      BT.println("LED on");
    }
    if (a=='2')
    {
      digitalWrite(13, LOW);
      BT.println("LED off");
    }
    if (a =='3')
    {
      BT.println("Napięci wynosi: ");
      BT.println(n);
    }



  }
}