1. Connecting Bluetooth Low Energy devices to Windows
9/16/2018 3:20 PM
HW-254T
Connecting Bluetooth Low Energy devices to Windows
Ellick Sung - Program Manager
Alain Michaud – Software Design Engineer
Microsoft Corporation
© 2010 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. Agenda What is Bluetooth LE? The Windows Bluetooth LE platform
Technical overview and examples
You’ll leave with information on how to
Easily connect your device to Windows with Bluetooth LE
Complete your Bluetooth LE device experience with a Metro style device app

3. What is Bluetooth LE?

4. Bluetooth LE enables new kinds of wireless device experiences.

5. Prototype Logitech keyboard LE HID support inbox with Win8
demo
LE HID Profile
Prototype Logitech keyboard
LE HID support inbox with Win8

6. Bluetooth Bluetooth low energy Global standard Low cost Robust Secure
Profile interoperability
Low power
Low duty cycle
Simplicity

7. Bluetooth connectivity for low power devices
Sport and fitness
Heartrate monitors
Pedometers
Cycling cadence/distance
Health
Glucose meters
Blood pressure monitors
Weighing scales
Some existing device experiences improved
Keyboards
Mice

8. Windows Bluetooth LE platform
Discovery and pairing experiences built into Windows
Simple API to collect and administer device data
Windows Runtime support for Metro style apps
Inbox support for HID class devices
Interoperability enhanced by the Windows platform and Bluetooth qualification

9. Development partners

10. Bluetooth LE in Windows

11. Windows makes it easy to create new wireless device experiences with Bluetooth LE.

12. Bluetooth LE services Simple, self-described, data
A characteristic comprises a set of data describing a value
A service comprises a set of one or more characteristics
A profile comprises a set of one or more services

13. Windows Bluetooth LE client API
BluetoothGATTGetServices
BluetoothGATTGetIncludedServices
BluetoothGATTGetCharacteristics
BluetoothGATTGetDescriptors
BluetoothGATTGetCharacteristicValue
BluetoothGATTGetDescriptorValue
BluetoothGATTBeginReliableWrite
BluetoothGATTSetCharacteristicValue
BluetoothGATTEndReliableWrite
BluetoothGATTAbortReliableWrite
BluetoothGATTSetDescriptorValue
BluetoothGATTRegisterEvent
BluetoothGATTUnregisterEvent
Get Data
Set Data
Receive Data Events

14. Metro style apps for Bluetooth LE
Metro style device app experience can focus on integrated solution
Custom class driver can allow access to multiple apps
Metro Style App
WinRT Library
WPD API
LE Profile Driver
Bluetooth LE Driver Stack
LE Device

15. Proprietary sample service
demo
Proprietary sample service
TI CC2540 development kit
Sample Simple Keys Service (w/ dev kit)
Sample WPD driver (Windows Driver Kit)

16. Health thermometer profile
demo
Health thermometer profile
Prototype Nordic Thermometer

17. Recap

18. Windows and Bluetooth LE
It’s easy to create new device experiences using Windows and Bluetooth LE
New kinds of devices are now connectable
Existing device experiences can be improved
HID device support is included inbox

19. Related sessions
[HW-747T] Building Metro style apps that connect to specialized devices

20. Further reading and documentation
MSDN
Bluetooth Low Energy Functions
Bluetooth Low Energy Enumerations
Bluetooth Low Energy Structures
Metro style device app for specialized devices – Design Guide
Windows Hardware Development
More about Bluetooth LE and its Profiles

21. thank you Feedback and questions http://forums.dev.windows.com
Session feedback

22. 9/16/2018 3:20 PM
© 2011 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
© 2011 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

23. Backup

24. Bluetooth LE keyboards will last for years on the same set of batteries

25. Get Service and Characteristic Data//
// Get the services
hr = BluetoothGATTGetServices(
hDeviceHandle,
numServices,
services,
&numServicesActual,
BLUETOOTH_GATT_FLAG_NONE); //
// Get the characteristic
hr = BluetoothGATTGetCharacteristics(
hDeviceHandle,
services[serviceIndex],
numChar,
characteristics,
&numCharsActual,
BLUETOOTH_GATT_FLAG_NONE); //
// Get the characteristic descriptors
hr = BluetoothGATTGetDescriptors(
hDeviceHandle,
characteristics[foundCharacteristicIndex],
numDesc,
descriptors,
&numDescsActual,
BLUETOOTH_GATT_FLAG_NONE);

26. Register for Events //
// Register a value change callback (asynchronous value
// change events)
hr = BluetoothGATTRegisterEvent(
hDeviceHandle,
CharacteristicValueChangedEvent,
(PVOID)&characteristics[foundCharacteristicIndex],
s_ValueChangeEvent,
(PVOID)this,
&m_ValueChangeEventReg,
BLUETOOTH_GATT_FLAG_NONE);

27. Set Device to Send (Write Data)//
// Set the client config descriptor to register for indications
::ZeroMemory(&clientConfigValue, sizeof(clientConfigValue));
clientConfigValue.DescriptorType = ClientCharacteristicConfiguration;
clientConfigValue.ClientCharacteristicConfiguration
.IsSubscribeToNotification = TRUE;
hr = BluetoothGATTSetDescriptorValue(
hDeviceHandle,
descriptors[clientConfigDescIndex],
&clientConfigValue,
BLUETOOTH_GATT_FLAG_NONE);

28. Adapting the LE WPD sample//
// Placeholder code
hr = BluetoothGATTRegisterEvent(
hDeviceHandle,
CharacteristicValueChangedEvent,
(PVOID)&characteristics[foundCharacteristicIndex],
s_ValueChangeEvent,
(PVOID)this,
&m_ValueChangeEventReg,
BLUETOOTH_GATT_FLAG_NONE);

29. Easily create a new wireless device to application experience using Windows and Bluetooth LE

30. Bluetooth LE vs. other radio technologies
Wi-Fi
Bluetooth BR/EDR
Bluetooth LE
Zigbee
ANT
Range
100 m? m
50 m (10-100)
200 m
30 m
Throughput (Actual)
Up to 300 Mbps
2.1 Mbps
200 kbps
100 kbps
20 kbps
Power Consumption
High
Low
Lowest
Frequency
2.4/5 GHz
2.4 GHz
Security
64b/128b
128b AES
Standard
Wi-Fi Alliance
Bluetooth SIG
ZigBee Alliance
Proprietary
Cost
Higher
Lower
Robustness
Advanced coding, 32 bit CRC, ARQ, transmit rate adaptation
Adaptive fast frequency hopping, FEC, fast ACK
Adaptive fast frequency hopping
DSSS