#include <SoftwareSerial.h>

SoftwareSerial BTSerial(11,10);

void setup(){
Serial.begin(9600);
BTSerial.begin(9600);
while(!Serial);
Serial.println("AT commands:okay");
}

void loop(){
if(BTSerial.available())
Serial.write(BTSerial.read());

if(Serial.available())
BTSerial.write(Serial.read());
}