Discover nRF51822 in Windows .NET C# Application

[Kamen]

Dear Sirs I am new with Nordic BLE Modules. After successuful pairing with Windows 8.1 in a Tablet I need to get an active Service. For example I would like to obtain Battery (BAS) Service. As I readed from Nordic Specification, that has to be make with the properly UUID for that Service, that is described as 0x180F. In C# Application I use 16 Byte UUID for this case and this is:

byte [] uuid = { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x18, 0x0F }

Than I use the class GenericAttributeProfile from .NET in order to search for that service:

string selector = GattDeviceService.GetDeviceSelectorFromUiid(new Guid(uuid)); var devices = await DeviceInformation.FindAllAsync(selector); .......

devices comes always empty, although that the device is paired with the Tablet (Windows 8.1) Probably I have to use another type for Guid (UUID) or I make another mistake. Any answers are wlcome. Thank You very much.

[David Edwin]

Can you attach a sniffer trace with the nRF Sniffer so we can have some idea about what is going on. The trace should be captured from the time of pairing the Nordic BLE module.

[Kamen]

Dear Sir Thank You for the answer. No, I don't attache any trace, becose the only I have is a Device with this Nordic chip.

[Petter Myhre]

The complete battery service uuid is 0000180f-0000-1000-8000-00805f9b34fb according to the Bluetooth specification.

And there is not necessary to construct the uuid in code. In windows runtime library there is a Class called “GattServiceUuids” which gives you correct uuid.

Edit 19.01.2015: Have you tried this example? I'm not an Windows 8 expert, but maybe it is a good starting point for implementing a battery service?

[Kamen]

Thank You I found this class in .NET but I still have the same Problem. Probably it is necessary for the first time some other service to be initialize? All the Information is welcome.

Best regards Kamen