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Ich benutze die SimpleControls Anwendung von redbearlabs und modifiziere sie für meinen persönlichen Gebrauch.Wie verbinde ich mich mit einem bestimmten BLE-Gerät?
Das Hauptlayout sieht so aus, und die Methode zum Suchen und Verbinden mit einem BLE-Gerät besteht darin, auf die Schaltfläche Verbinden zu klicken, die automatisch scannt und eine Verbindung zu dem gefundenen Gerät herstellt.
Problem:
Die App so ziemlich jedes BLE-Gerät anschließen könnten es erkennt, so habe ich mich gefragt, ob seine möglich, die MAC-Adresse des BLE Geräts zu spezifizieren ich habe, so dass die Logik etwas dies wie:
if (address == "BB:EE:7A:89:B3:19")
{
//connect
}
Gerät ich versuche zu verbinden: redbearlabs BLE Nano
Hier ist die SimpleControls Code, der die Verbindungsfunktionen enthält:
private Button connectBtn = null;
private TextView rssiValue = null;
//private TextView AnalogInValue = null;
private ToggleButton digitalOutBtn1, digitalOutBtn2, digitalOutBtn3;
private BluetoothGattCharacteristic characteristicTx = null;
private RBLService mBluetoothLeService;
private BluetoothAdapter mBluetoothAdapter;
private BluetoothDevice mDevice = null;
private String mDeviceAddress;
private boolean flag = true;
private boolean connState = false;
private boolean scanFlag = false;
private byte[] data = new byte[3];
private static final int REQUEST_ENABLE_BT = 1;
private static final long SCAN_PERIOD = 2000;
final private static char[] hexArray = { '0', '1', '2', '3', '4', '5', '6',
'7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
private final ServiceConnection mServiceConnection = new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName componentName,
IBinder service) {
mBluetoothLeService = ((RBLService.LocalBinder) service)
.getService();
if (!mBluetoothLeService.initialize()) {
Log.e(TAG, "Unable to initialize Bluetooth");
finish();
}
}
@Override
public void onServiceDisconnected(ComponentName componentName) {
mBluetoothLeService = null;
}
};
private final BroadcastReceiver mGattUpdateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (RBLService.ACTION_GATT_DISCONNECTED.equals(action)) {
Toast.makeText(getApplicationContext(), "Disconnected",
Toast.LENGTH_SHORT).show();
setButtonDisable();
} else if (RBLService.ACTION_GATT_SERVICES_DISCOVERED
.equals(action)) {
Toast.makeText(getApplicationContext(), "Connected to BLE Nano",
Toast.LENGTH_SHORT).show();
getGattService(mBluetoothLeService.getSupportedGattService());
} else if (RBLService.ACTION_DATA_AVAILABLE.equals(action)) {
data = intent.getByteArrayExtra(RBLService.EXTRA_DATA);
//readAnalogInValue(data);
} else if (RBLService.ACTION_GATT_RSSI.equals(action)) {
displayData(intent.getStringExtra(RBLService.EXTRA_DATA));
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title);
rssiValue = (TextView) findViewById(R.id.rssiValue);
//AnalogInValue = (TextView) findViewById(R.id.AIText);
digitalOutBtn2 = (ToggleButton) findViewById(R.id.digitalOutBtn2);
connectBtn = (Button) findViewById(R.id.connect);
connectBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (scanFlag == false) {
scanLeDevice();
Timer mTimer = new Timer();
mTimer.schedule(new TimerTask() {
@Override
public void run() {
if (mDevice != null) {
mDeviceAddress = mDevice.getAddress();
mBluetoothLeService.connect(mDeviceAddress);
scanFlag = true;
} else {
runOnUiThread(new Runnable() {
public void run() {
Toast toast = Toast
.makeText(
SimpleControls.this,
"Couldn't search Ble Shield device!",
Toast.LENGTH_SHORT);
toast.setGravity(0, 0, Gravity.CENTER);
toast.show();
}
});
}
}
}, SCAN_PERIOD);
}
System.out.println(connState);
if (connState == false) {
mBluetoothLeService.connect(mDeviceAddress);
} else {
mBluetoothLeService.disconnect();
mBluetoothLeService.close();
setButtonDisable();
}
}
});
digitalOutBtn1 = (ToggleButton) findViewById(R.id.digitalOutBtn1);
digitalOutBtn1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
byte buf[] = new byte[] { (byte) 0x01, (byte) 0x00, (byte) 0x00 };
if (isChecked == true)
buf[1] = 0x01; //turn on
else
buf[1] = 0x00; //turn off
characteristicTx.setValue(buf);
mBluetoothLeService.writeCharacteristic(characteristicTx);
}
});
digitalOutBtn3 = (ToggleButton) findViewById(R.id.digitalOutBtn3);
digitalOutBtn3.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
byte[] buf = new byte[] { (byte) 0xA0, (byte) 0x00, (byte) 0x00 };
if (isChecked == true)
buf[1] = 0x01;
else
buf[1] = 0x00;
characteristicTx.setValue(buf);
mBluetoothLeService.writeCharacteristic(characteristicTx);
}
});
if (!getPackageManager().hasSystemFeature(
PackageManager.FEATURE_BLUETOOTH_LE)) {
Toast.makeText(this, "Ble not supported", Toast.LENGTH_SHORT)
.show();
finish();
}
final BluetoothManager mBluetoothManager = (BluetoothManager) getSystemService(Context.BLUETOOTH_SERVICE);
mBluetoothAdapter = mBluetoothManager.getAdapter();
if (mBluetoothAdapter == null) {
Toast.makeText(this, "Ble not supported", Toast.LENGTH_SHORT)
.show();
finish();
return;
}
Intent gattServiceIntent = new Intent(SimpleControls.this,
RBLService.class);
bindService(gattServiceIntent, mServiceConnection, BIND_AUTO_CREATE);
}
@Override
protected void onResume() {
super.onResume();
if (!mBluetoothAdapter.isEnabled()) {
Intent enableBtIntent = new Intent(
BluetoothAdapter.ACTION_REQUEST_ENABLE);
startActivityForResult(enableBtIntent, REQUEST_ENABLE_BT);
}
registerReceiver(mGattUpdateReceiver, makeGattUpdateIntentFilter());
}
private void displayData(String data) {
if (data != null) {
rssiValue.setText(data);
}
}
private void setButtonEnable() {
flag = true;
connState = true;
digitalOutBtn1.setEnabled(flag);
digitalOutBtn3.setEnabled(flag);
connectBtn.setText("Disconnect");
}
private void setButtonDisable() {
flag = false;
connState = false;
digitalOutBtn1.setEnabled(flag);
digitalOutBtn3.setEnabled(flag);
connectBtn.setText("Connect");
}
private void startReadRssi() {
new Thread() {
public void run() {
while (flag) {
mBluetoothLeService.readRssi();
try {
sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
};
}.start();
}
private void getGattService(BluetoothGattService gattService) {
if (gattService == null)
return;
setButtonEnable();
startReadRssi();
characteristicTx = gattService
.getCharacteristic(RBLService.UUID_BLE_SHIELD_TX);
BluetoothGattCharacteristic characteristicRx = gattService
.getCharacteristic(RBLService.UUID_BLE_SHIELD_RX);
mBluetoothLeService.setCharacteristicNotification(characteristicRx,
true);
mBluetoothLeService.readCharacteristic(characteristicRx);
}
private static IntentFilter makeGattUpdateIntentFilter() {
final IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(RBLService.ACTION_GATT_CONNECTED);
intentFilter.addAction(RBLService.ACTION_GATT_DISCONNECTED);
intentFilter.addAction(RBLService.ACTION_GATT_SERVICES_DISCOVERED);
intentFilter.addAction(RBLService.ACTION_DATA_AVAILABLE);
intentFilter.addAction(RBLService.ACTION_GATT_RSSI);
return intentFilter;
}
private void scanLeDevice() {
new Thread() {
@Override
public void run() {
mBluetoothAdapter.startLeScan(mLeScanCallback);
try {
Thread.sleep(SCAN_PERIOD);
} catch (InterruptedException e) {
e.printStackTrace();
}
mBluetoothAdapter.stopLeScan(mLeScanCallback);
}
}.start();
}
private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {
@Override
public void onLeScan(final BluetoothDevice device, final int rssi,
final byte[] scanRecord) {
runOnUiThread(new Runnable() {
@Override
public void run() {
byte[] serviceUuidBytes = new byte[16];
String serviceUuid = "";
for (int i = 30, j = 0; i >= 15; i--, j++) {
serviceUuidBytes[j] = scanRecord[i];
}
serviceUuid = bytesToHex(serviceUuidBytes);
if (stringToUuidString(serviceUuid).equals(
RBLGattAttributes.BLE_SHIELD_SERVICE
.toUpperCase(Locale.ENGLISH))) {
mDevice = device;
}
}
});
}
};
private String bytesToHex(byte[] bytes) {
char[] hexChars = new char[bytes.length * 2];
int v;
for (int j = 0; j < bytes.length; j++) {
v = bytes[j] & 0xFF;
hexChars[j * 2] = hexArray[v >>> 4];
hexChars[j * 2 + 1] = hexArray[v & 0x0F];
}
return new String(hexChars);
}
private String stringToUuidString(String uuid) {
StringBuffer newString = new StringBuffer();
newString.append(uuid.toUpperCase(Locale.ENGLISH).substring(0, 8));
newString.append("-");
newString.append(uuid.toUpperCase(Locale.ENGLISH).substring(8, 12));
newString.append("-");
newString.append(uuid.toUpperCase(Locale.ENGLISH).substring(12, 16));
newString.append("-");
newString.append(uuid.toUpperCase(Locale.ENGLISH).substring(16, 20));
newString.append("-");
newString.append(uuid.toUpperCase(Locale.ENGLISH).substring(20, 32));
return newString.toString();
}
@Override
protected void onStop() {
super.onStop();
flag = false;
unregisterReceiver(mGattUpdateReceiver);
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mServiceConnection != null)
unbindService(mServiceConnection);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// User chose not to enable Bluetooth.
if (requestCode == REQUEST_ENABLE_BT
&& resultCode == Activity.RESULT_CANCELED) {
finish();
return;
}
super.onActivityResult(requestCode, resultCode, data);
}
Ich bin nicht sicher, wie kann ich erreichen, was ich in diesem Code werden soll. Die digitalOutBtn sind die Tasten zur Steuerung der Lichter mit dem BLE-Gerät.
Jede Hilfe wird geschätzt, danke im Voraus!