BLUETOOTH CONTROL LEDs

1void setup() {
2Serial.begin(9600);
3 pinMode(8, OUTPUT); // put your  setup code here, to run once:
4 }
5 
6void loop() {
7  // put your main  code here, to run repeatedly:
8 if(Serial.available()>0)
9   {     
10      char  data= Serial.read(); // reading the data received from the bluetooth module
11      switch(data)
12      {
13        case  'a': digitalWrite(8, HIGH);break; // when a is pressed on the app on your smart  phone
14        case 'd': digitalWrite(8, LOW);break; // when d is pressed on the  app on your smart phone
15        default : break;
16      }
17      Serial.println(data);
18    }
19   delay(50);
20}