Sistemi di Elettronica Digitale, Sez - Alessandra Flamminialessandra-flammini.unibs.it/EG_FED/EG_AA1718/SED/S… · · 2017-12-15Hardware Measures the ambient room temperature in

Sistemi di Elettronica Digitale Sez8

Alessandra Flamminialessandraflamminiunibsit

Ufficio 24 Dip Ingegneria dellrsquoInformazione030-3715627 Lunedigrave 1630-1830

Sistemi di elettronica digitale A Flammini AA2017-2018

Android SensorySystems SAndroidE


HOW ANDROID APPs MANAGE INTERNAL SENSORS

3Sistemi di Elettronica Digitale A Flammini

Most Android-powered devices have built-in sensors that measure motion orientation and various environmental conditions These sensors are capable of providing raw data with high precision and accuracy and are useful if you want to monitor three-dimensional devicemovement or positioning or you want to monitor changes in the ambient environmentnear a device

The Android platform supports three broad categories of sensorsbull Motion sensors these sensors measure acceleration forces and rotational forces along

three axes This category includes accelerometers gravity sensors gyroscopes and rotational vector sensors

bull Environmental sensors these sensors measure various environmental parameters suchas ambient air temperature and pressure illumination and humidity This categoryincludes barometers photometers and thermometers

bull Position sensors these sensors measure the physical position of a device This categoryincludes orientation sensors and magnetometers

SENSOR CATEGORIES


HW based sensors

Physical component built into the device

The data is directly acquired measuring specific environmental properties

SW based sensors

Emulate a HW based sensor behavior

The data are derived from one or more HW based sensors

Smart Sensors for Domitics and Health Care Alessandra Flammini UNIBS

5

Sensor Type Description Common UsesTYPE_ACCELEROMETER

Hardware Measures the acceleration force in ms

2that is applied to a device on all

three physical axes (x y and z) including the force of gravity

Motion detection (shake tilt etc)

TYPE_AMBIENT_TEMPERATURE

Hardware Measures the ambient room temperature in degrees Celsius (degC) See note below

Monitoring air temperatures

TYPE_GRAVITY

Software or Hardware

Measures the force of gravity in ms


three physical axes (x y z)


TYPE_GYROSCOPE

Hardware Measures a devices rate of rotation in rads around each of the three physical axes (x y and z)

Rotation detection (spin turn etc)

TYPE_LIGHT Hardware Measures the ambient light level (illumination) in lx

Controlling screen brightness

TYPE_LINEAR_ACCELERATION


Measures the acceleration force in ms


three physical axes (x y and z) excluding the force of gravity

Monitoring acceleration along a single axis

ANDROID SENSORS TYPES (1)


6

TYPE_ORIENTATION

Software Measures degrees of rotation that a device makes around all three physical axes (x y z) As of API level 3 you can obtain the inclination matrix and rotation matrix for a device by using the gravity sensor and the geomagnetic field sensor in conjunction with the getRotationMatrix() method

Determining device position

TYPE_PRESSURE

Hardware Measures the ambient air pressure in hPa or mbar

Monitoring air pressure changes

TYPE_PROXIMITY

Hardware Measures the proximity of an object in cm relative to the view screen of a device This sensor is typically used to determine whether a handset is being held up to a persons ear

Phone position during a call

TYPE_RELATIVE_HUMIDITY

Hardware Measures the relative ambient humidity in percent ()

Monitoring dewpoint absolute and relative humidity


SENSORS Accelerometer


Typically usages

screen orientation

inclination for game input

vibrations measurements

SENSORS GPS


Typically usages

Location

LaterationTriangulation of cell towers or wifinetworks (with database of known locations for towers and networks)

Location of associated cell tower or wifi network

Need connect to 3 satellites for 2D positioning 4 satellites for 3D positioning

More visible satellites increase precision

Typical precision 20-50m

Maximum precision 10m

SENSORS Gyroscope


Usages

Measurements of rate of rotation (angular speed)

3 values related to the axes

Pitch value (rotation around X axis)

Roll value (rotation around Y axis)

Yaw value (rotation around Z axis)

SENSOR FRAMEWORK


You can access these sensors and acquire raw sensor data by using the Android sensorframework The sensor framework is part of the androidhardware package and includesthe following classes and interfaces

bull SensorManager You can use this class to create an instance of the sensor service This class provides various methods for accessing and listing sensors registering and unregistering sensor event listeners This class also provides several sensor constantsthat are used to report sensor accuracy set data acquisition rates and calibrate sensors

bull Sensor You can use this class to create an instance of a specific sensor This classprovides various methods that let you determine a sensors capabilities

bull SensorEvent The system uses this class to create a sensor event object which providesinformation about a sensor event A sensor event object includes the followinginformation the raw sensor data the type of sensor that generated the event the accuracy of the data and the timestamp for the event

bull SensorEventListener You can use this interface to create two callback methods thatreceive notifications (sensor events) when sensor values change or when sensoraccuracy changes

httpsdeveloperandroidcomguidetopicssensorssensors_overviewhtml

SENSOR FRAMEWORK how to use


You can access sensor information by means of several methods

bull getResolution() sensor resolutionbull getMaximumRange() sensor maximum rangebull getPower() sensors power requirements requirementsbull getMinDelay() returns the minimum time interval (in microseconds) a sensor can use to

sense data Any sensor that returns a non-zero value for the getMinDelay() method is a streaming sensor otherwise it reports data only when there is a change in the parameters it is sensing

bull getVendor() sensor manufacturer

You can set sensor parameters by registerListener() methodbull SensorManagerSENSOR_DELAY_NORMAL sensor sampling interval of a streaming

sensor is set to NORMAL (default setting) resolution NORMAL = 200ms UI = 60ms GAME = 20ms FASTEST = 0ms asynchronous)

You can access sensor data and events by implementing a callbackbull onSensorChanged() a sensor reports a new value System provides you with a

SensorEvent object containing information (accuracy source timestamp value)

ANDROID APP SENSOR LEARN BY EXAMPLE


MODIFY EMPTY APP (EXAMPLE)

1) OBJECTIVEModify the text laquoHello Worldraquo with laquoHello World RMS = sqrt( (x^2 + y^2 + z^2)3)raquo where RMS is the Root Mean Square

Objective is to insert some code within the MainActivityjava file which subscribes for accelerometer values and calculates and visualizes the Root Mean Square value to the user



2) SUBSCRIPTION TO SENSORMANAGER

To get values from accelerometer is is necessary to subscribe for receiving accelerometer sensor events from the SensorManager which is the service providing access to internal sensors in Android

A) Create variable which will contain the SensorManager object

B) The SensorManager service is assigned to the variable

C) A subscription for accelerometer sensor is requested with delay normal (200ms) and the current activity(this) will be the target responsible for handling sensor events containing acceleration values

A

BC Warning this will be

red coloured until next step



3) IMPLEMENT RECEIVING CALLBACKS

B) Fill the onSensorChanged with the code to change the text of the TextView Warning code seems complicated because to modify UI objects it is needed to call runOnUIThread method

The important part here is contained inside tvsetText() to calculate RMS value from acceleration values

A

B

A) Write laquoimplements SensorEventListenerraquo ALT+Enter laquoImplement methodsraquo OK Callbacks onSensorChanged e onAccuracyChanged will be automatically created



4) RUN

INTERNAL SENSORS IS EASY EXTERNAL SENSORS


A solution from Google Android Things Sensors (Things) are equipped with Android

(eg Smartwatch) itrsquos easy to develop APPS

for Things management

Currently available only for few devices

Unsuitable for low-cost low-power things



SAndroidE rarr External sensors = Internal ones Oriented to interface things by Bluetooth Low-Energy (BLE)

Allows to build custom-logic APPs to interact with external things

Supports devices from multiple vendors

Free and Open Source

Examples of supported devices

Official website httpes3unibsitSAndroidE

Github httpsgithubcomSAndroidEOfficial

Arduino RaspBerry Redbear Nano Flic Beacons

Sensory

systemFitbit

SAndroidE


SAndroidE- does not require rooting- simply use Android BLE

stack

BLE = Bluetooth Low Energy

Internal

sensors

HW HW

Driver

Input subsystem Kernel

Libraries Sensor HAL

Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager

SAndroidE components


bull SAndroidE library (Java)

Virtualizes remote devices

regardless of type and

operating mode

bull Device Descriptor Files (XMLJSON)

Represent a description

of the BT Services

provided by devices

bull API description files (XMLJSON)

Represent interface

to connect and retrieve

data from Cloud

bull SAndroidE configuration application

Used to detect nearby

BT devices and give

them a unique ID

All provided in the open-source code

SAndroidE supported devices


A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud



A User programmable devices

B Beacons and

non-programmable devices

Devices like Arduino Raspberry Pi RedBear BLE Nano already

integrated

Typically require device flashing

With SAndroidE no need to write custom firmware for basic

operations

Flashing is not allowed but BT protocols are known

SAndroidE declares protocols in the Device Descriptor Files

In this way these devices can be easily virtualized

NOTE a BLE beacon does not need any coupling as it continuously broadcasts BLE messages to any device in range

BLE BEACONS




C Vendor locked device ndash

data from vendorrsquosAPP

D Vendor locked device ndash

data from vendorrsquos

CLOUD

Some vendors apply an encrypted

BT protocol

Example Flic buttons

In this case SAndroidE works by

receiving notifications by vendorrsquos

APP

Some vendors provide data

only by accessing the

proprietary Cloud

Example Fitbit activity

trackers

SAndroidE retrieves such data

by means of API

SANDROIDE APP LEARN BY EXAMPLE



1) OBJECTIVETo replace the text laquoHello Worldraquo with laquoHello World trimmer valueraquo

Furthermore we want to connect the button and the led not by wire but laquothrough the appraquo when the button is pressed the led must light on

QUI IMMAGINE BASETTA



2) DOWNLOAD SANDROIDE amp PHONE CONFIGURATION

a) From httpsgithubcomSAndroidEOfficialframeworkreleases download the latest SAndroidE binary package sandroide-bin-v07zip

b) Decompress the zip file

c) Connect smartphone or tablet as mass storageUSB archive and copy within the smartphone internal memory these files

a) all xml files contained in the xml folder of the decompressed zip b) the file flasher-debugapk

d) Disconnect the smartphone and in laquoPhone Settings-gtSecurityraquo enable Installation from laquoUnknown Sourcesraquo

e) Using the laquoArchiveraquo or laquoFile Explorerraquo app of your Smartphone search and execute the file flasher-debugapk to to install it Accept all with OK



3) FLASHING THE DEVICE WITH SANDROIDE COMPATIBILE FIRMWARE

The Nano device to interact with a SAndroidE APP must be provided with a firmware implementing the same communication protocol supported by SAndroidE on the smartphone side Letrsquos see how

a) Connect Nano to the PC using the appropriate USB programmer

b) From SandroidE wiki on Github httpsgithubcomSAndroidEOfficialframeworkwiki

access the Nano tutorial by clicking on laquoUsing RedBear Nano with SAndroidEraquo

c) In the section laquoFlashing the Nanoraquo click on laquoSandroide compatible Nano firmwareraquo and save the opened page (File-gtSave) in the MBEDDAPLINK drive

PLEASE PAY ATTENTION to save as hex and not as txt by selecting laquoAll filesraquo int the Saving form instead of laquoText fileraquo and by removing the suffix txt to the end of the file name



4) ASSIGN AN ID TO THE NANO BY USING THE FLASHER APP

A) Launche the BleembeddedFlaser app installed at step 2 and click on laquoScan discoverable devicesraquo

B) Click on MyNano If there is more than one Nano verify characters on the label of the Nano and check that they match with the last 2 characters of the MAC address shown in the list

Warning Nano mujst be powered on Reset the power it still does not appear in the list

C) Wait until the device connects and disconnects A list of bluetooth services and characteristics provided is shown

D) Click on laquoStore attribute in description fileraquo and give it the name nanoesempio

REMEMBER THIS NAME



5) CONNECT NANO AND COMPONENTS TO BREADBOARD AND POWER IT ON

PLEASE NOTE

- Led (only on Nano) can be connected withouth resistor because current is limited

- For SAndroidE the pin labels to consider are the blue ones if the label is P0_X then in SAndroidE you will have to use X



6) IMPORT SANDROIDE LIBRARY COPY-PASTE SANDROIDEAAR

Copy the SAndroidEaar file(or SAndroidEv-07aar) included in the SandroidE zip file in the Android project folder applibs Right click on libs -gt Paste

If libs folder does not appear click on the menu shown in figure and select the view Project



7) IMPORT SANDROIDE LIBRARY BUILDGRADLE

A) Insert in the buildgradle of the app folder the following code

allprojects repositories

jcenter()flatDir dirs lsquolibsrsquo

dependencies

compile(nameSAndroidE-v07 extaar)

B) Click on Sync Now

C) When finished this text should appear at the bottom of the page



8) INHERITS FROM SANDROIDEAPPLICATION

Add to the manifest file AndroidManifestxml within the tag application this attribute

androidname=itunibssandroidelibactivitiesSandroideApplication



9) INHERITS FROM SANDROIDEBASEACTIVITY

Modify the MainActivityjava file by adding

extends SandroideBaseActivity

Remember to press ALT+Enter if the words are shown in red color



10) READ TRIMMER VALUE (see next slide for code position)

SandroideDevice nano

SandroidePin nanoTrimmer

A) Add the variables which will represent the physical device and the trimmer

nano = ((SandroideDevice) BLEContextfindViewById(nanoesempio_sandroide_device))

nanoTrimmer = new SandroidePin()setDevice(nano 6) we connect to pin number 6

setMode(SandroidePinPIN_MODE_ANALOG_INPUT) the pin is analog input

setDeltaThreshold(001) means value is changed of 1 percent of fullscale

setSamplingInterval(500) means sample every 500ms

setOnValueReceived(new SandroidePinOnValueReceivedListener()

Override

public void onEvent(final Object newValue Object oldValue)

runOnUiThread(new Runnable()

Override

public void run()

tvsetText(Hello world +

trimmer=+newValuetoString())

)

)

B) Connect to device identified by laquonanoesempioraquo followed by laquo_sandroide_deviceraquo

C) Define the pin 6 as analog pin and write the callback to execute when its value changes



11) THE CODE SHOULD BE SIMILAR TO

A B

C



12) CODE EXPLANATION

bull The method BleContextfindViewById(iddevice) connects the physical device to the app by creating a virtual object of type SandroideDevice and storing it to the variable named nano

bull In the trimmer creationbull The method setDevice is used to indicate the the virtual object nanoTrimmer of

type SandroidePin belongs to the physical object connected to the virtual object named nano at pin position number 4 (see the pinout)

bull The method setSamplingThreshold(ms) received a number in milliseconds which is the sampling interval to use for that pin Different sampling intervals can be defined for different pin numbers

bull The method setDeltaThreshold(X) receives a float value from 0 to 1 and instructs the device to sent the pin value only if it differs of +- X percent from the last sent value Example setDeltaThreshold(01) asks the Nano(which operates at 33V) to send the new value only if it is +-033V from the last sent value

bull La callback ha come parametro newValue di tipo object nel caso di pin analogici questo object deve essere castato a float in caso di pin digitali a boolean



13) RUN

PLEASE NOTE The first time you run a SAndroidE app you are asked to grant permissions Just press OK



14) BUTTON STATE -gt LED STATE (see next slide for code position)

A) Add variables to contain virtual objects representing pins of button and led

B) Create the digital output pin representing the led

C) Create the digital input representing the button and at each change of state (press or release) modify the state of the led(onoff) accordingly

SandroidePin nanoButton

SandroidePin nanoLed

nanoLed = new SandroidePin()setDevice(nano28)

setMode(SandroidePinPIN_MODE_DIGITAL_OUTPUT)

nanoButton = new SandroidePin()setDevice(nano15)

setMode(SandroidePinPIN_MODE_DIGITAL_INPUT)


Override


nanoLedsetValue(newValue)

)




A

B

C

The method setValue() of a SandroidePin object receives a boolean value true or false to change the state of the pin to HIGH or LOW



16) RUN

IMMAGINE CON DITO CHE PREME PULSANTE

Just press and release the button to see the LED turning ON and OFF

Now just think if the LED was connected to another Nano you can remotely control everything you want

SANDROIDE OTHER TUTORIALS


Altri tutorial sono disponibili su Github allrsquoindirizzo

httpsgithubcomSAndroidEOfficialframeworkwiki

SANDROIDE PROJECT WEB


httpes3unibsitSAndroidE

Visit SAndroidE website for links resources and videos to get started

On Github you can contribute to extend the SAndroidE core adding new devices or creating new tutorials

httpsgithubcomSAndroidEOfficialframework

Android SensorySystems SAndroidE









SENSOR CATEGORIES


HW based sensors



SW based sensors




5









TYPE_GRAVITY






TYPE_GYROSCOPE













6

TYPE_ORIENTATION



TYPE_PRESSURE



TYPE_PROXIMITY









Typically usages

screen orientation



SENSORS GPS


Typically usages

Location







SENSORS Gyroscope


Usages






SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN





















SENSOR CATEGORIES


HW based sensors



SW based sensors




5









TYPE_GRAVITY






TYPE_GYROSCOPE













6

TYPE_ORIENTATION



TYPE_PRESSURE



TYPE_PROXIMITY









Typically usages

screen orientation



SENSORS GPS


Typically usages

Location







SENSORS Gyroscope


Usages






SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN














SENSOR CATEGORIES


HW based sensors



SW based sensors




5









TYPE_GRAVITY






TYPE_GYROSCOPE













6

TYPE_ORIENTATION



TYPE_PRESSURE



TYPE_PROXIMITY









Typically usages

screen orientation



SENSORS GPS


Typically usages

Location







SENSORS Gyroscope


Usages






SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN















5









TYPE_GRAVITY






TYPE_GYROSCOPE













6

TYPE_ORIENTATION



TYPE_PRESSURE



TYPE_PROXIMITY









Typically usages

screen orientation



SENSORS GPS


Typically usages

Location







SENSORS Gyroscope


Usages






SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN















6

TYPE_ORIENTATION



TYPE_PRESSURE



TYPE_PROXIMITY









Typically usages

screen orientation



SENSORS GPS


Typically usages

Location







SENSORS Gyroscope


Usages






SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN
















Typically usages

screen orientation



SENSORS GPS


Typically usages

Location







SENSORS Gyroscope


Usages






SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN














SENSORS GPS


Typically usages

Location







SENSORS Gyroscope


Usages






SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN














SENSORS Gyroscope


Usages






SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN














SENSOR FRAMEWORK






























A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

Android Stack

Application

Framework

Activity Manager






operating mode



of the BT Services

provided by devices


Represent interface


data from Cloud



BT devices and give

them a unique ID




A User

programmable

devices

B Beacons and non-

programmable

devices

C Vendor Locked

device - data from

vendorrsquos APP

D Vendor Locked

device - data from

vendorrsquos Cloud




B Beacons and



integrated



operations





BLE BEACONS








CLOUD


BT protocol




APP



proprietary Cloud


trackers


by means of API

































REMEMBER THIS NAME




PLEASE NOTE














dependencies



























Override



Override

public void run()



)

)






A B

C












13) RUN















Override



)




A

B

C




16) RUN




































A








A

B




4) RUN


















Sensory

systemFitbit

SAndroidE



stack


Internal

sensors

HW HW

Driver



Application level

Applications

SAndroidE

BLE

External

sensors

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devices

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devices

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CLOUD


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operating mode



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integrated



operations





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CLOUD


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Override

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B

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A User

programmable

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devices

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B Beacons and



integrated



operations





BLE BEACONS








CLOUD


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Documents

Sistemi di Elettronica Digitale, Sez - Alessandra Flamminialessandra-flammini.unibs.it/EG_FED/EG_AA1718/SED/S… · · 2017-12-15Hardware Measures the ambient room temperature in