"Find" method by locking the application

[guilhermedefalque]

Hello,

I have a problem. When I run the code below, the code in the method: BluetoothGattService tempService = sensor.find("0000FFE0-0000-1000-8000-00805F9B34FB");

Before that, I can connect to the At-09 module normally. Could you tell me what the problem is? I'm running the application below in eclipse. import tinyb.; import java.util.; import java.time.; import java.util.concurrent.locks.;

public class Main { private static final float SCALE_LSB = 0.03125f; static boolean running = true;

static void printDevice(BluetoothDevice device) {
    System.out.print("Address = " + device.getAddress());
    System.out.print(" Name = " + device.getName());
    System.out.print(" Connected = " + device.getConnected());
    System.out.println();
}

public static void main(String[] args) throws InterruptedException {

    //while(true) {}
	BluetoothManager manager = BluetoothManager.getBluetoothManager();
	boolean discoveryStarted = manager.startDiscovery();
	
    System.out.println("The discovery started: " + (discoveryStarted ? "true" : "false"));
    BluetoothDevice sensor = getDevice("00:15:83:00:73:35");
    
    /*
     * After we find the device we can stop looking for other devices.
     */
    try {
        manager.stopDiscovery();
        System.out.println("Achou");
    } catch (BluetoothException e) {
        System.err.println("Discovery could not be stopped.");
    }

    if (sensor == null) {
        System.err.println("No sensor found with the provided address.");
        System.exit(-1);
    }
    
    System.out.print("Found device: ");
    printDevice(sensor);
    
    if (sensor.connect())
        System.out.println("Sensor with the provided address connected");
    else {
        System.out.println("Could not connect device.");
        System.exit(-1);
    }
    
    Lock lock = new ReentrantLock();
    Condition cv = lock.newCondition();
    
    Runtime.getRuntime().addShutdownHook(new Thread() {
        public void run() {
            running = false;
            lock.lock();
            try {
                cv.signalAll();
            } finally {
                lock.unlock();
            }

        }
    });
    //System.out.println(sensor.getUUIDs());	
    BluetoothGattService tempService = sensor.find("0000FFE0-0000-1000-8000-00805F9B34FB");
    System.out.println("locking");
    BluetoothGattCharacteristic tempValue = tempService.find("0000FFE1-0000-1000-8000-00805F9B34FB");
    
}

static BluetoothDevice getDevice(String address) throws InterruptedException  {
    BluetoothManager manager = BluetoothManager.getBluetoothManager();
    BluetoothDevice sensor = null;
    for (int i = 0; (i < 15) && running; ++i) {
        List<BluetoothDevice> list = manager.getDevices();
         for (BluetoothDevice device : list) {
            printDevice(device);
            /*
             * Here we check if the address matches.
             */
            if (device.getAddress().equals(address))
                sensor = device;
        }
        if (sensor != null) {
            return sensor;
        }
        Thread.sleep(4000);
    }
    return null;
}

}