I am developing an application on Samsung ACE3 to connect a Bluetooth Low Energy device. Since Samsung does not want ACE3 to be updated to Android 4.3, I need to use Samsung ble api. Currently, the connection, reading data, sending data and receiving notification from one sign - everything is in order. But, when I turn on the notification for several characteristics, then only the first activated characteristics can receive a notification. Does anyone have the same problem? Appreciate your help!
The following code includes a connection notification
if (mBluetoothGatt != null && device != null) {
BluetoothGattService pucService = mBluetoothGatt.getService(device, PROFILE_UART_CONTROL_SERVICE);
if (pucService == null) {
showMessage("PUC service not found!");
return;
}
BluetoothGattCharacteristic motion = pucService.getCharacteristic(MOTION_READ);
if (motion == null) {
showMessage("charateristic not found!");
return;
}
enableNotification(true, motion);
BluetoothGattCharacteristic voltage = pucService.getCharacteristic(VOLTAGE_READ);
if (voltage == null) {
showMessage("charateristic not found!");
return;
}
enableNotification(true, voltage);
BluetoothGattCharacteristic pressure = pucService.getCharacteristic(PRESSURE_READ);
if (pressure == null) {
showMessage("charateristic not found!");
return;
}
enableNotification(true, pressure);
}
The following is the enableNotification method:
public boolean enableNotification(boolean enable, BluetoothGattCharacteristic characteristic) {
if (mBluetoothGatt == null)
return false;
if (!mBluetoothGatt.setCharacteristicNotification(characteristic, enable))
return false;
BluetoothGattDescriptor clientConfig = characteristic.getDescriptor(CCC);
if (clientConfig == null)
return false;
if (enable) {
Log.i(TAG,"enable notification");
clientConfig.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
} else {
Log.i(TAG,"disable notification");
clientConfig.setValue(BluetoothGattDescriptor.DISABLE_NOTIFICATION_VALUE);
}
return mBluetoothGatt.writeDescriptor(clientConfig);
}