blink leds using at commands of hc05 bluetooth module and arduino

Other Hardware LEDs and Multiplexing
1

#include <SoftwareSerial.h>
char str[30];
int flag=0,num;
char c9,s1;
char sone[40]="+INQ:825:25:8ED53D,5A020C,7FFF";
//sone =String("+INQ:1007:B6:967C33,5A020C,7FFF");
SoftwareSerial BTSerial(10, 11); // RX | TX
void setup()
{
pinMode(9, OUTPUT); // this pin will pull the HC-05 pin 34 (key pin) HIGH to switch module to AT mode
digitalWrite(9, HIGH);
Serial.begin(9600);
Serial.println("Enter AT commands:");
BTSerial.begin(38400);
pinMode(LED_BUILTIN, OUTPUT);// HC-05 default speed in AT command more
}
void loop()
{
if (flag==0)
{
BTSerial.println("at+init");
delay(100);
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c=BTSerial.read();
Serial.write(c);
}
BTSerial.println("at+cmode=1");
delay(100);
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c2=BTSerial.read();
Serial.write(c2);
}
BTSerial.println("at+role=1");
delay(100);
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c3=BTSerial.read();
Serial.write(c3);
}
BTSerial.println("at+iac?");
delay(100);
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c4=BTSerial.read();
Serial.write(c4);
}
BTSerial.println("at+class=0");
delay(100);
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c5=BTSerial.read();
Serial.write(c5);
}
BTSerial.println("at+inqm?");
delay(100);
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c6=BTSerial.read();
Serial.write(c6);
}
BTSerial.println("at+inq");
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c7=BTSerial.read();
Serial.write(c7);
}
delay(100);
BTSerial.println("at+inqc");
delay(100);
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c8=BTSerial.read();
Serial.write(c8);
}
BTSerial.println("at+inq");
delay(100);
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c9=BTSerial.read();
Serial.write(c9);
}
delay(100);
BTSerial.println("at+pswd?");
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c14=BTSerial.read();
Serial.write(c14);
}
delay(100);
BTSerial.println("at+pair=34E9,11,B47C36,20");

// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c12=BTSerial.read();
Serial.write(c12);
BTSerial.println("at+pair=825,25,8ED53D,20");
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c13=BTSerial.read();
Serial.write(c13);
delay(100);

{
digitalWrite(LED_BUILTIN, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(LED_BUILTIN, LOW); // turn the LED off by making the voltage LOW
delay(1000);
}
}
}

for (;;);

BTSerial.println("at+state?");
// From HC-05 and send to Arduino Serial Monitor
if (BTSerial.available())
while (BTSerial.available())
{
char c20=BTSerial.read();
Serial.write(c20);
delay(100);
}
}
}