arduino

#include <SoftwareSerial.h>
#include <Regexp.h>

SoftwareSerial BT(7, 8);

void setup()
{ 
  BT.begin(9600);
  Serial.begin(9600);
}

void loop()
{
  String s;
  String b;
  
  BT.print("AT");
  delay(50);
  
  s = SResponse();
  b = BTResponse();

/*
  if(s!="")
    BT.print(s);

  if(b!="")
    Serial.println(b);
*/

  Serial.println("Command: AT");
  
  if(b==String("OK"))
  {
    BT.print("AT+DISI?");
    Serial.println("Command: AT+DISI?");
    b = BTResponse();
    if(b==String("OK+DISIS"))
    {
      b = BTResponse();
      Serial.println(b);
    }
  }
  else
  {
    Serial.println(b);
  }
  delay(1000);
}

String BTResponse()
{
  String result;

  if (BT.available())
  {
    while(BT.available())
    {
      result += char(BT.read());
    }
    return result;
  }
  return "";
}

String SResponse()
{
  String result;

  if (Serial.available())
  {
    while(Serial.available())
    {
      result += char(Serial.read());
    }
    return result;
  }
  return "";
}