#include <BluetoothSerial.h>
BluetoothSerial BTSerial;
char bt;
void setup() {
  BTSerial.begin("esp ap");
  Serial.begin(9600);
}

void loop() {
  if(BTSerial.available()){
    bt = BTSerial.read();
  }
  if (bt == 'A'){
Serial.println("comando 'A' recebido via bluethoo");

}else if(bt == 'B'){
Serial.println("comando 'B' recebido via bluethoo");

}
  
  
  }