Arduino Bluetooth

BLUETOOTH_HS-08_ZS040.cpp

#define TX    1
#define RX    0
#define LED   7

#define BUFFER_SIZE 16
char bufr[BUFFER_SIZE];

void setup(){
  Serial.begin(9600);
  pinMode(TX, OUTPUT);
  pinMode(RX,  INPUT);
  pinMode(LED, OUTPUT);
}

void loop(){
  int i=0;
  delay(500);

  if (Serial.available() > 0) {
    while (Serial.available() > 0) {
      bufr[i++] = Serial.read(); 
    }
    bufr[i]='\0';
    if(bufr[0] == '0') {
      digitalWrite(LED,  LOW);
    } else if (bufr[0] == '1') {
      digitalWrite(LED, HIGH);
    }

    Serial.println(bufr);
  }
}