Xamarin PCL bluetooth unable see other devices

See more:

Android

forms

iOS

Bluetooth

, +

Hi,
I'm trying to using xamarin for do a test app. This app must search bluetooth devices, view them into a list and connect to them for read or write data. I choose xamarin Portable Class Library for my project.

I see a lots of examples but I can't see devices in my list.

I try Monkey Robotics (project 'Robocontroller' and project 'BLE') but scanning I can't see devices!

Robocontroller:

05-30 15:14:21.048 D/Mono    (11792): [0x7f6946d000] worker starting
05-30 15:14:21.063 I/mono-stdout(11792): BluetoothLEManager: Scan timeout has elapsed.
BluetoothLEManager: Scan timeout has elapsed.
05-30 15:14:21.065 D/BluetoothAdapter(11792): stopLeScan()
05-30 15:14:21.067 D/BluetoothAdapter(11792): 622203304: getState(). Returning 12

BLE:

Adapter: Starting a scan for devices.
05-30 15:23:53.549 D/BluetoothAdapter(17688): startLeScan(): null
05-30 15:23:53.647 D/BluetoothLeScanner(17688): onClientRegistered() - status=0 clientIf=5
adapter.StartScanningForDevices(00000000-0000-0000-0000-000000000000)
05-30 15:23:53.755 I/mono-stdout(17688): adapter.StartScanningForDevices(00000000-0000-0000-0000-000000000000)
[0:] adapter.StartScanningForDevices(00000000-0000-0000-0000-000000000000)
05-30 15:23:53.768 I/Choreographer(17688): Skipped 152 frames!  The application may be doing too much work on its main thread.
Thread started: <Thread Pool> #7
05-30 15:24:03.718 D/Mono    (17688): [0xba2bcf40] worker starting
BluetoothLEManager: Scan timeout has elapsed.
05-30 15:24:03.801 I/mono-stdout(17688): BluetoothLEManager: Scan timeout has elapsed.
05-30 15:24:03.808 D/BluetoothAdapter(17688): stopLeScan()

I use asus k01a with bluetooth 4.0 and android 5 for test. I tried change device but same issue.
Devices that must be discovered are: lumia 950xl, mac mini, arduino bluetooth module, other android phone.


Any suggestions? Thanks

What I have tried:

I tryed others projects like 'estimotes', 'xamarin BLE' (the one with old code that redirect to Monkey.Robotics) and 'BluetoothLEExplorer'. I'm using latest version of xamarin with vs2015 pro.