3.Introduction to Windows CE

8/6/2019 3.Introduction to Windows CE

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Introduction to Embedded SoftwareIntroduction to Embedded Software

DevelopmentDevelopment

School of software EngineeringSchool of software Engineering20052005

3. Introduction to Windows CE3. Introduction to Windows CE


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AgendaAgenda

Hello Windows CE!Hello Windows CE!

Windows CE featuresWindows CE features

Compare with desktop versionCompare with desktop version

Compare with other embedded OSCompare with other embedded OS


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Demo :Demo :Hello Windows CE!Hello Windows CE!


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What can CE do: Mobile PhoneWhat can CE do: Mobile Phone


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What can CE do: PDAWhat can CE do: PDA


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Portable Media CenterPortable Media Center


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What can CE do:What can CE do:Entertainment devicesEntertainment devices

LinuxLinuxWindowsWindows


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What can CE do:What can CE do:

Car automotiveCar automotive BMWBMWCitronCitron

Clarion Co. Ltd.Clarion Co. Ltd.

DaimlerChryslerDaimlerChrysler

FiatFiat

SubaruSubaru

HondaHonda

HyundaiHyundai

MitsubishiMitsubishi

ToyotaToyota


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What can CE do : OtherWhat can CE do : Other

GatewaysGateways

Industrial AutomationIndustrial Automation

SetSet--Top BoxesTop Boxes

Medical Devices and SystemsMedical Devices and Systems

ATMsATMs

Projectors and Large Screen DisplaysProjectors and Large Screen Displays VoIP DevicesVoIP Devices


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Windows CE historyWindows CE history

First edition released in 1996First edition released in 1996

Windows CE .NET 4.x is widely usedWindows CE .NET 4.x is widely used

The latest version Windows CE 5.0The latest version Windows CE 5.0


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Windows CE featuresWindows CE features


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Compare with Desktop Version:Compare with Desktop Version:Hardware platformHardware platform

Desktop WindowsDesktop Windows

Only runsOnly runs on x86on x86

architecturearchitecture

Windows CEWindows CE

ARM / XscaleARM / Xscale

MIPSMIPS PowerPCPowerPC

SHSH

x86x86


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Windows CE feature listWindows CE feature list

Windows CE can run on differentWindows CE can run on differenthardware platforms.hardware platforms.

How can we do that?How can we do that?


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New Platform WizardNew Platform Wizard

The answer is BSP !The answer is BSP !


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Introduction to BSPIntroduction to BSP

Board Support Package is the softwareBoard Support Package is the softwarethat implements and supports the OEMthat implements and supports the OEMadaptation layer (OAL) and deviceadaptation layer (OAL) and devicedrivers for a standard developmentdrivers for a standard development

board (SDB).board (SDB).

HardwareHardware

Operation SystemOperation System

Board Support PackageBoard Support Package


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Compare with Desktop Version:Compare with Desktop Version:Image SizeImage Size


Windows 3.x : 2Windows 3.x : 2--5MB5MB

Windows 98 : 400MBWindows 98 : 400MB Windows XP : 1.5GBWindows XP : 1.5GB

Lager and lagerLager and lager

Can NOT beCan NOT becustomizedcustomized


Minimal : 200KBMinimal : 200KB

Networking aboutNetworking about800KB800KB

GWES, Shell andGWES, Shell andApps about 4MBApps about 4MB

Internet ExplorerInternet Explorerabout 3MBabout 3MB


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Windows CE feature listWindows CE feature list

ComponentizationComponentization

More than 200 optional componentsMore than 200 optional components

Quick and easy to customize OS for aQuick and easy to customize OS for aparticular systemparticular system


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Compare with Desktop Version:Compare with Desktop Version:Real TimeReal Time


NoNo inherentinherent realreal

time supporttime support


256 levels of thread256 levels of thread

prioritypriority Nested interruptsNested interrupts

PerPer--thread quantumsthread quantums

Priority inversionPriority inversion


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Windows CE feature list:Windows CE feature list:

Windows CE provide RealWindows CE provide Real--time supporttime support

RealReal--time support is essential whentime support is essential whendealing with timedealing with time--critical applications.critical applications.


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Compare with Desktop Version:Compare with Desktop Version:Power managementPower management


No powerNo power

managementmanagement


Battery power / ACBattery power / AC

powerpower Devices can have theirDevices can have their

own power stateown power state

Turn off unnecessaryTurn off unnecessary

devicedevice


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Windows CE provides a PowerWindows CE provides a PowerManager to manage device power andManager to manage device power andimprove overall OS power efficiencyimprove overall OS power efficiency

Windows CE can reduce the powerWindows CE can reduce the powerconsumption of a target device and toconsumption of a target device and to

maintain and preserve the file systemmaintain and preserve the file systemin RAM during the reset, on, idle, andin RAM during the reset, on, idle, andsuspend power states.suspend power states.


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Compare with Desktop Version:Compare with Desktop Version:Programming InterfaceProgramming Interface


ASCII / UNICODEASCII / UNICODE

RichAPI setRichAPI set Powerful hardwarePowerful hardware

platformplatform


UNICODE onlyUNICODE only

Compact Version ofCompact Version ofWin32 API, MFC..Win32 API, MFC..

Processor, RAM, FileProcessor, RAM, FileSystem limitationSystem limitation


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Windows CE only support UNICODEWindows CE only support UNICODE

CHARCHAR --> TCHAR / WCHAR> TCHAR / WCHAR

strlenstrlen --> wcslen> wcslen

Some APIs provide limited functionSome APIs provide limited function

Windows CE only have limitedWindows CE only have limitedresourceresource


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Compare with Desktop Version:Compare with Desktop Version:Micro KernelMicro Kernel


NT series isNT series is

claimed to be microclaimed to be microkernel.kernel.

9x series is not9x series is notmicro kernel.micro kernel.


Complete micro kernelComplete micro kernel

File system and deviceFile system and devicedrivers run on userdrivers run on usermodemode

Kernel is responsible forKernel is responsible forpassing messagepassing message


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Complete micro kernelComplete micro kernel

Enhanced reliabilityEnhanced reliability

Enhanced scalabilityEnhanced scalability


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Compare with Desktop Version:Compare with Desktop Version:Share source codeShare source code


CommercialCommercial

software, sourcesoftware, sourcecode is MS 1stcode is MS 1stlevel secret.level secret.


70% of Windows CE70% of Windows CE

5.0 source code is5.0 source code isshared.shared.

User can modify it.User can modify it.


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Source code is sharedSource code is shared

User can find shared source codeUser can find shared source codeunder %_WINCEROOT%under %_WINCEROOT%\\privateprivatefolderfolder


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Compare with other EmbeddedCompare with other EmbeddedOS: Multimedia supportOS: Multimedia support

Other EOS:Other EOS:

Little buildLittle build--in supportin supportfor audio & videofor audio & video

No commercial webNo commercial webbrowser.browser.


Rich UI elementRich UI element

Windows MediaWindows MediaPlayer 9, supportPlayer 9, supportmp3, wav, avi,mp3, wav, avi,wmvwmv

Internet Explorer 6Internet Explorer 6& Pocket IE& Pocket IE


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Rich User Interface ElementRich User Interface Element

Strong Multimedia supportStrong Multimedia support

Interact with desktop windowsInteract with desktop windows

Pocket Word, Excel, PowerPoint, adobePocket Word, Excel, PowerPoint, adobereaderreader

Pocket MSN messengerPocket MSN messenger

Pocket IE, Windows Media PlayerPocket IE, Windows Media Player SQL Server CE editionSQL Server CE edition

ACD SeeACD See


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Compare with other EmbeddedCompare with other EmbeddedOS: Programming InterfaceOS: Programming Interface


DifferentDifferentprogrammingprogramminginterfaceinterface

Typically use C/C++ &Typically use C/C++ &j2mej2me


Win32 APIWin32API

MFC,A

TL, STLMFC,A

TL, STL COM,ActiveXCOM,ActiveX

.NET Compact.NET CompactFrameworkFramework

Java VMJava VM

EVB, EVCEVB, EVC


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Easy to get start for WindowsEasy to get start for Windowsprogrammerprogrammer

Support multiple programmingSupport multiple programminglanguageslanguages


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Compare with other EmbeddedCompare with other EmbeddedOS: image size and real timeOS: image size and real time


RTLinux, C/OSRTLinux, C/OS--IIIIsupport hard realsupport hard realtimetime

Vxworks min size : 8kVxworks min size : 8k

C/OSC/OS--II min size : 2kII min size : 2k


No hard real timeNo hard real timesupportsupport

Image size is tooImage size is toolarge for specificlarge for specificusageusage


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Windows CE advantages:Windows CE advantages:

Rich optional components andRich optional components andfunctions.functions.

Can be strongly customized.Can be strongly customized.

Easy to use.Easy to use.

Same programming interface withSame programming interface withdesktop windows.desktop windows.

Rich MS and third party applications.Rich MS and third party applications.


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Windows CE disadvantages:Windows CE disadvantages:

Image size is still too large for specificImage size is still too large for specificuse.use.

Real time?Real time?

Not free :Not free : 3$ per runtime license3$ per runtime license

995$ for Platform Builder995$ for Platform Builder

Performance & Security ??Performance & Security ??


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HomeworkHomework

1.1. Build your own Windows CE platformBuild your own Windows CE platformwith Platform Builder and run it.with Platform Builder and run it.

2.2. Be familiar with Windows CE GUI, FileBe familiar with Windows CE GUI, FileSystem structure, Control PanelSystem structure, Control Panel

3.3. Write a ticWrite a tic--tactac--toe application withtoe application withPlatform Builder and play it on yourPlatform Builder and play it on yourown Windows CE platform.own Windows CE platform.

3.Introduction to Windows CE

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