Dan ArdeleanMicrosoft MVPXamarin Certified Mobile Developer

Blog: sviluppomobile.blogspot.comTwitter: @danardelean EMail: dan.ardelean@live.com

Bluetooh LE &Lumia SensorCore

Windows Phone 8.1

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• 2001 Nokia inizia lavorare su una nuova tecnologia wireless• 2004 risultati pubblicati con il nome Bluetooth Low End

Extension• 2006 rilasciato pubblicamente come Wibree• 2007 accordo per includere Wibree dentro Bluetooth come

Ultra low power technology• 2010 integrato come Bluetooth Smart dentro Core

Specifications 4.0• 2011 viene rilasciato iPhone 4S con supporto per BLE• 2012 escono i primi dispositivi• 2013 Windows 8.1 aggiunge supporto parziale per BLE• 2014 Windows Phone 8.1 aggiunge supporto per BLE

Bluetooth Low Energy - Smart

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• “Internet of Things”: low cost, low power• Proximity and out of range detection

(geofencing)• Fast connections (10 msec) and low data

latency (3-6 msec)• Adaptive Frequency Hopping (AFH), resilient to

interference• Broadcast support (iBeacons)• Connectionless always off technology• Low power consumption: ~30μA average

consumption 1 second data interval, equivalent to 330 days on a single coin cell

• Range up to 280 meters (in practice about 10-30 meters)

Bluetooth Smart

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Classic vs SmartTechnical Specification Classic Bluetooth technology Bluetooth Smart technology

Distance/Range (theoretical max.) 100 m (330 ft) >100 m (>330 ft)

Over the air data rate 1–3 Mbit/s 1 Mbit/sApplication throughput 0.7–2.1 Mbit/s 0.27 Mbit/s

Active slaves 7 Not defined; implementation dependent

Security 56/128-bit and application layer user defined

128-bit AES with Counter Mode CBC-MAC and

application layer user defined

Robustness Adaptive fast frequency hopping, FEC, fast ACK

Adaptive frequency hopping, Lazy Acknowledgement, 24-bit CRC, 32-

bit Message Integrity Check

Latency (from a non-connected state) Typically 100 ms 6 ms

Total time to send data (det.battery life) 100 ms 3 ms

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• HTP - for medical temperature measurement devices.

• GLP - for blood glucose monitors.• BLP - for blood pressure measurement.

Health Care

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• HRP - for devices which measure heart rate.• CSCP - for sensors attached to a bicycle or exercise bike to

measure cadence and wheel speed.• RSCP - running speed and cadence profile.• CPP - cycling power profile.• LNP — location and navigation profile.

Sport & Fitness

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• FMP - the "find me" profile — allows one device to issue an alert on a second misplaced device

• PXP - the proximity profile — allows a proximity monitor to detect whether a proximity reporter is within a close range.

Proximity Sensor

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Home Automation

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Altri dispositivi

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Architettura Bluetooth Low Energy

GAP ATT

L2CAP

GATT

GAP Role Profiles (Master / Slave) GATT Profiles

User Application

Host Controller Interface (HCI)

SMP Host

Cont

rolle

r

Link Layer (LL)

Physical Layer (PHY)

Appl

icatio

n

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Generic Access Profile (GAP) : Roles• Transmit advertisement onlyBroadcaster

(Advertiser)

• Only receives advertisementsObserver (Scanner)

• 1 connection to a masterPeripheral (Slave)

• Supports multiple connections• Initiates connections to devices in peripheral roleCentral (Master)

Central

Peripheral

Peripheral

Broad- caster Obser-

ver

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Profili standard GATT

Characteristic

Value

Descriptor Descriptor

Value types: Broadcast, Read, Write, Write without response, Notify, Indicate (needs reply)Descriptors describe:

Presentation formatValid RangeUser description

Profile

Service

Characteristic

Characteristic

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Profili BLE standard

xxxxxxxx-0000-1000-8000-00805F9B34FB

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Heart Rate

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• Package.appxmanifest

• Trovare dei dispositivi che implementano il servizio

• Realizzare la connessione al servizio desiderato

Windows Phone 8.1

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• “Collegamento” alla caratteristica desiderata

• Impostare eventualmente il tipo di lettura

• Leggere/scrivere o sottoscrivere le notifiche

• Interpretare il risultato della lettura

Windows Phone 8.1

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DEMO

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• Creare un progetto Windows Phone Runtime component e implementare IBackgroundTask

• Aggiungere reference e modificare Package.appxmanifest

Background Tasks

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• Verificare se l’app ha il consenso di girare nel background

• Registrare un nuovo task

• Rimuovere/gestire I task registrati

Background Tasks

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Nokia LumiaSensorCore SDK

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Dispositivi con Lumia SensorCore

Lumia 630 / 635 Lumia 930

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• Collezione di API che usano i dati forniti da vari sensori: accelerometro, location

• Usato per tenere traccia delle attività fisica e movimento

• I sensori girano in background e raccolgono dati per un massimo di 10 giorni

• Sempre attivi ma in Low Power Mode• Potrebbe fornire accesso a dati PRIVATI

quindi può essere disabilitata e lo storico può essere cancellato

Cos’è Lumia SensorCore?

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API

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• Step Counter• Activity Monitor • Place Monitor • TrackPoint Monitor

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• Dll disponibile da NuGet• Architettura ARM o x86• Microsoft Visual C++ 2013 Runtime

Package for Windows Phone• Testing Tools opzionale

Visual Studio

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• Quando si installa l’SDK vengono aggiunte in automatico dentro Package.appxmanifest

Capabilities – Lumia SensorCore HID

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API state:

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• Quanti passi e per quanto tempo• Caminata o corsa – usa anche l’intensità del

movimento non solo la velocità• Granularità 5 minuti – storico 10 giorni• 5-6 secondi fino quando inizia vedere gli eventi• Ci possono essere falsi positivi

Step Counter API

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Step Counter API

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• Cambiamenti nell’attività del utente: fermo, cammina, corre…

• Delay tipico 5-10 sec per eliminare alcuni falsi positivi

• Risultati migliori dentro la borsa o in tasca• Bisogna abilitare l’API• API con risultati real-time e storico 10 giorni

Activity Monitor

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Activity monitor

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Activity monitor

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•Lista di geo-coordinate•Usa principalmente celle del operatore e/o hotspot WiFi. GPS solo se un’altra applicazione lo usa•Non fornisce dati in tempo reale•Prova indovinare l’indirizzi di casa e lavoro•Classificazione può durare 2-3 giorni•Area raggio almeno 200 metri, distanze minimo 500 m, tempo di permanenza almeno 10 minuti

Place Monitor

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Place Monitor

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• Simile a Place Monitor ma traccia le rute• API offline come Place Monitor• Track point ogni 5 minuti e un minimo di 500

metri• Accuratezza dipende da numero di celle o

hotspot. Una corsa in un parco senza una sessione GPS attiva potrebbe registrare un solo trackpoint

TrackPoint Monitor

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TrackPoint Monitor

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DEMOhttps://github.com/nokia-developer

04/07/2023 Microsoft Confidential

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© 2013 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.

The information contained in this document represents the current view of Microsoft Corp. on the issues discussed as of the dateof publication. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitmenton the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information presented after the date of publication.This guide is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, IN THIS DOCUMENT.Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no partof this document may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form, by any means (electronic, mechanical, photocopying, recording or otherwise), or for any purpose, without the express written permission of Microsoft.Microsoft may have patents, patent applications, trademarks, copyrights or other intellectual property rights covering subject matter in this document. Except as expressly provided in any written license agreement from Microsoft, the furnishing of this document does not give you any license to these patents, trademarks, copyrights or other intellectual property.The example companies, organizations, products, domain names, email addresses, logos, people, places, and events depicted herein are fictitious. No association with any real company, organization, product, domain name, email address, logo, person, place, or event is intended or should be inferred.