umdf sensor hardware (non-hid) win32 app metro style app sensor driver (3rd party) sensor hardware...

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Chalk talk for sensor and location support in Windows

Fred Bhesania – Program Manager LeadSandy Spinrad - Test LeadDino Natucci – Program Manager Gavin Gear – Program Manager Microsoft Corporation

HW-664C


Agenda

• Sensors and location opportunities• Overview of sensor and location platform• Demo• Hardware/software validation

You’ll leave with examples of how to• Understand location/sensor architecture and inbox

driver story• Gain knowledge of critical validation tools and

experiences to optimize your platforms


Opportunities for sensor and location apps• Make user experiences more relevant to the user’s

location• Enhance apps by adapting to the surrounding

environment• Every app can use simple sensor gestures• Easily create casual games and apps that use

sensors• Use sensor fusion to implement cutting edge apps


Sensor scenarios

• Sensor categories • Light sensor• Fused motion sensors• Presence sensor

• Sensor scenarios• Basic – rotate, flip, shake• Intermediate – raw sensors• Advanced – sensor fusion

Accelerometer Sensor

Gyroscope Sensor


Location scenarios

• Location• Search points of interest (POI)• Geo-tag photos and other content• Navigation• Location aware notifications • weather, news , sports, coupons

• Many others…


Platform overview

UMDF

Sensor Service

Sensor API (Win32)

Sensor Hardware (non-HID)

Win32 app

Metro style app

Sensor Class Extension

Sensor Driver (3rd Party)

WinRT Sensor API

Sensor Driver (HID)

Sensor Hardware (HID)

Blue = In Windows 8Green = 3rd

PartyBlack = Firmware


Windows 8 inbox sensor drivers

• HID sensor class driver• Buses supported = USB, I2C• Sensors supported = light, motion, presence• Built on industry standard – USB-IF

• ACPI ALS sensor driver• Buses supported = ACPI methods• Sensors supported = light• Built on industry standard – ACPI 4.0


Sensor hardware

• For Slate PC and Convertible PC hardware• Light sensor• Motion sensors + fusion• Accelerometer• Magnetometer• Gyroscope

• GPS (on systems with mobile broadband hardware)

Hardware and software validation


Hardware/software validation

• Review certification requirements• Certification tests primarily validate • Required sensors are present• Sensors are correctly orientated• Sensors provide the required data fields

• OEMs and IHVs should develop extensive test plans to thoroughly exercise their sensors under a variety of conditions• Power management, plug and play, noisy RF conditions,

system stress, darkness, etc.• Use the common device verification tools (WDF verifier,

driver verifier, etc).


Sensor diagnostic tool

Visualizing sensor data

demo


Hardware integration and lessons learned• Sensors• ALS placement• Magnetic interference• Calibration

• GPS• Antenna selection and placement• RF interference

• OEMs and IHVs need to work closely together for system design & integration


Related sessions

• [HW-249T] Architecting and integrating sensor drivers

• [PLAT-781T] Using location & sensors in your app• [HW-260T] Windows Certification: improvements to

the logo program

Questions


• Feedback and questions http://forums.dev.windows.com

• Session feedbackhttp://bldw.in/SessionFeedback

thank you

http://forums.dev.windows.com/

http://forums.dev.windows.com/

http://bldw.in/SessionFeedback

http://bldw.in/SessionFeedback

© 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.

Extra Slides


Simplified Platform Block Diagram

Sensor Driver

Sensor API

Metro style apps

Location API

Win32 Apps

Sensor Device

Location Driver

Location Device


Sensor Fusion – Hardware Implementation

3D Accelerometer


Party

3D Magnetometer3D Gyro

Microcontroller

Sensor Driver (HID)

Black = Firmware


Sensor Fusion – Software Implementation (1)

3D Accelerometer


Party

3D Magnetometer3D Gyro

Accelerometer Driver

Gyro DriverMagnetometer

Driver

Sensor Fusion Driver

Black = Firmware


Sensor Fusion – Software Implementation (2) Blue = In

Windows 8Green = 3rd Party

3D Magnetometer

3D Gyro / 3D Accelerometer

Sensor Fusion Driver

Black = Firmware


Sensor Fusion Inputs and Outputs (9-Axis)

Pass-Through

Accelerometer3D Accelerometer

3D Gyro

3D Magnetometer

Sensor Fusion

Gyro

Compass

Inclinometer

Device Orientation

umdf sensor hardware (non-hid) win32 app metro style app sensor driver (3rd party) sensor hardware...

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