making embedded systems design patterns for great software ebookee

CMP book embedded systems design

... Embedded Design Life Cycle Unlike the design of a software application on a standard platform, the design of an embedded system implies that both software and hardware are being designed in ...  The implications of software failure is much more severe in embedded systems than in desktop systems.  Embedded systems often have power constraints.  Embedded systems often must operate ... environmental conditions.  Embedded systems have far fewer system resources than desktop systems.  Embedded systems often store all their object code in ROM.  Embedded systems require specialized...

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CMP book embedded systems design - Preface

Danh mục: Kỹ thuật lập trình

... faculty have only reinforced my belief that we need such a book. What is this book about? This book is not intended to be a text in software design, or even embedded software design (although ... make embedded software development different from host-based software design. In other words, what do you do when there is no printf() or malloc()? Because this is a book about designing embedded ... book about designing embedded systems? Because my experiences working in the industry and, more recently, working with students have convinced me that there is a need for such a book. For example,...

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CMP book embedded systems design - introduction

Danh mục: Kỹ thuật lập trình

...  The implications of software failure is much more severe in embedded systems than in desktop systems.  Embedded systems often have power constraints.  Embedded systems often must operate ... environmental conditions.  Embedded systems have far fewer system resources than desktop systems.  Embedded systems often store all their object code in ROM.  Embedded systems require specialized ... for acceptance of their devices in an embedded application. That is, unless their chip had a good solution for embedded system design and debug, it was not going to be a serious contender for...

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Design Patterns for Building Message-Oriented Web Services

Danh mục: Kỹ thuật lập trình

... Webservice from scratch.WHAT ARE DESIGN PATTERNS? Design patterns are loosely described as time-tested, established solutions to recurring design problems.Formal design patterns are highly structured ... substitute for embedded type information.CHAPTER 3 ■ DESIGN PATTERNS FOR BUILDING MESSAGE-ORIENTED WEB SERVICES 51701xCH03.qxd 7/17/06 12:54 PM Page 51Step 2: Build the XSD Schema File for the ... design patterns because they factor in industry-accepted practices for approaching recurring design problems.CHAPTER 3 ■ DESIGN PATTERNS FOR BUILDING MESSAGE-ORIENTED WEB SERVICES 33701xCH03.qxd 7/17/06...

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Design Patterns for Building Service-Oriented Web Services

Danh mục: Kỹ thuật lập trình

... " + q.Previous_Close.ToString()); For more information on building loosely coupled clients, please refer to Chapter 3.CHAPTER 4 ■ DESIGN PATTERNS FOR BUILDING SERVICE-ORIENTED WEB SERVICES ... file (defined in a separate,though embedded, class file). This approach is incorrect from an SOA perspective for tworeasons:CHAPTER 4 ■ DESIGN PATTERNS FOR BUILDING SERVICE-ORIENTED WEB SERVICES ... site at http://www.apress.com) for full code listings.Figure 4-5. Client console application for the StockTraderContracts Web serviceCHAPTER 4 ■ DESIGN PATTERNS FOR BUILDING SERVICE-ORIENTED...

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Design Patterns for SOAP Messaging with WS-Addressing and Routing

Danh mục: Kỹ thuật lập trình

... abstrac-tion of a port.HTTP is designed for Request/Response messaging patterns, meaning thata request generates a direct response. TCP is designed for decoupled messaging patterns whereby a sender ... path.EndPointReference Stores endpoint reference information, which is bindinginformation for a service.Continued3901c09_final.qxd 6/30/04 3:19 PM Page 222 Design Patterns for SOAP Messaging with WS-Addressing ... MSMQ for Reliable MessagingConsider the following application design for a StockTrader application for mutual fund trades, which cannot be executed until after the stock exchangecloses for the...

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Tài liệu Embedded Systems Design ppt

Danh mục: Hệ điều hành

... Embedded Design Life Cycle Unlike the design of a software application on a standard platform, the design of an embedded system implies that both software and hardware are being designed in ... a different design strategy for partitioning the design into hardware and software components. The partitioning decision is a complex optimization problem. Many embedded system designs are ... the other issues. Work Cited 1. Barr, Michael. “Architecting Embedded Systems for Add-on Software Modules.” Embedded Systems Programming, September 1999, 49. TEAMFLY ...

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Making Embedded Systems pptx

Danh mục: Hệ điều hành

... willas well but this is a book about embedded systems, not about design patterns. Thinkabout exploring one of these to learn more about standard software patterns. • Gamma, Erich; Richard Helm, ... Sierra (2004), Head First Design Patterns. Using Java as the example language, this book gives great exam-ples with an engaging style.• Search on Wikipedia for software design pattern.Interview ... Ralph Johnson, and John Vlissides (1995), Design Patterns: Elements of Reusable Object-Oriented Software. This is the original, semi-nal work on design patterns. It uses C++ as the reference language.•...

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Making Embedded Systems doc

Danh mục: Hệ điều hành

... then on how to go about designing and implementing software for an embedded system. This book contains some of what I've learned. It is a bookabout good software design in resource constrained ... willas well but this is a book about embedded systems, not about design patterns. Thinkabout exploring one of these to learn more about standard software patterns. • Gamma, Erich; Richard Helm, ... Sierra (2004), Head First Design Patterns. Using Java as the example language, this book gives great exam-ples with an engaging style.• Search on Wikipedia for software design pattern.Interview...

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design patterns for dummies

Danh mục: Tin học văn phòng

... at www.dummies.com/go/designpatternsfd1e.4 Design Patterns For Dummies 03_798541 intro.qxp 3/27/06 2:20 PM Page 4Still unclear about when to use the GoF Factory Method design pattern?Consider ... to the design pattern for this chapter, which this chapter’s whole discussion has really been about —the Strategy design pattern. Making Your Move withthe Strategy PatternThe Strategy design ... standard patterns, you also see some newer patterns that havebeen added to the standard set of patterns, bringing us up to the modern day.Chapter 12 is all about joining the worldwide patterns...

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design patterns for dummies (isbn - 0471798541)

Danh mục: Kỹ thuật lập trình

... Decorator and Factory Patterns 07_798541 ch03.qxp 3/27/06 2:21 PM Page 51 Design Patterns For Dummies xviii02_798541 ftoc.qxp 3/27/06 2:20 PM Page xviiiClosed for Modification,Open for ExtensionOne ... and the Formula One racer this way:public static void main(String[] args) {StreetRacer streetRacer = new StreetRacer();FormulaOne formulaOne = new FormulaOne();streetRacer.go();formulaOne.go();...}24Part ... which is why design patterns were introduced in the first place. In particular, design patterns areintended to help you handle change as you have to adapt your code to newand unforeseen circumstances....

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Báo cáo hóa học: " Editorial Embedded Systems Design in Intelligent Industrial Automation" pdf

Danh mục: Hóa học - Dầu khí

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Báo cáo hóa học: " Research Article A SOA-Based Embedded Systems Development Environment for Industrial Automation" pdf

Danh mục: Báo cáo khoa học

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Free Software tools for embedded systems

Danh mục: Kỹ thuật lập trình

... ) and can boot several operating systems (Linux, uClinux, and others)Softgun: http://softgun.sourceforge.netVirtual ARM system with many virtual onboard peripherals. Boots Linux.SWARM Software ARM arm7 emulatorhttp://www.cl.cam.ac.uk/~mwd24/phd/swarm.htmlCan run uClinux13Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008klibchttp://www.kernel.org/pub/linux/libs/klibc/“Kernel C library”Tiny and minimalistic C library designed for use in an initramfs at boot time (alternative to initrds).Fine for the creation of simple shell scripts.Ships with small executables for use in shells, built with klibc,and a klcc compiler to compile your own applications.Not elaborate enough to support BusyBox applications.Useful details in http://en.wikipedia.org/wiki/Klibc19Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Platform specific toolchains (1)ARMCode Sourcery (supports GNU/Linux, EABI and uClinux):http://www.codesourcery.com/gnu_toolchains/arm/Also available for Windows workstations.MIPShttp://www.linuxmips.org/wiki/Toolchains (useful links)6Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Training contents (3)AnnexesAutomatic system generation with BitBake / OpenEmbedded33Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Other emulatorsColdFire emulatorhttp://www.slicer.ca/coldfire/Can boot uClinux37Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Minicom (1)Definition: serial communication programAvailable in all GNU / Linux distributionsCapabilities (all through a serial link):Serial console to a remote Unix systemFile transferModem control and dialupSerial port configuration50Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Denx Software Engineeringhttp://denx.deCreated by Wolfgang Denk,the author of the UBoot bootloader.Create and support the Embedded Linux Development Kit (ELDK),a complete and well documented development environment.This kit is not only Free Software, it can be downloaded freely by anyone.A great community member and contributor!15Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Free Software tools for embedded systems GNU / Linux workstationCrosscompiling toolchains9Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008uClibchttp://www.uclibc.org/ from CodePoet ConsultingLicense: LGPLLightweight C library for small embedded systems, with most features though.The whole Debian Woody was ported to it ... Support servicesUseful if you don't have your own support resourcesLong term support commitment, even for versions considered as obsolete by the community, but not by your users!44Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Commercial toolsetsCaution: commercial doesn't mean proprietary!Vendors play fair with the GPL and do make their source code available to their users, and most of the time, to the community.As long as they distribute the sources to their users, the GPL doesn't require vendors to share their sources with any third party.No issue with all the GPL sources developed by or with the community.Graphical toolkits developed by the vendors look proprietary. Their licenses are not advertised on their websites! You have to be a customer to know or get a free preview kit to know.35Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Free Software tools for embedded systems GNU / Linux workstationVarious tools34Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Emulators SummarySystem emulatorsUseful to experiment with a full system, including the kernelqemu: x86, x86_64, arm, sparc, ppc, mipsSkyEye: several arm architecturesUser emulatorsUseful to run or debug user space binaries for other CPUsqemu: x86, arm, sparc, ppc, mips20Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Platform specific toolchains (2)ColdfireCode Sourcery (supports ELF, GNU/Linux and uClinux):http://www.codesourcery.com/gnu_toolchains/coldfirePowerPCCode Sourcery (supports GNU/Linux and EABI)http://www.codesourcery.com/gnu_toolchains/power.html49Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Sysgo Koan Software http://sysgo.comELinOS development toolset,in particular based on Eclipseand the Linux Trace Toolkit.Includes FreeToolBox, a freely downloadable compiling and rootfs creating toolchain.Supports i386, arm and ppc.Hard realtime support with their own microkernel (PikeOS),an approach similar to RTAI.http://koansoftware.comMakers of KaeilOS(http://koansoftware.com/kaeilos/), a GPL embedded Linux distribution for industrial applications.KaeilOS supports i386 and popular arm platforms. Other platforms supported upon request.Includes several graphical toolkits and supports hard realtime (RTAI, Xenomai, preemption patches).Unfortunately, KaeilOS is GPL but not available for public download.16Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Standalone toolchain buildBuilding a crosscompiling toolchain by yourself is a difficult and painful task! Can take days or weeks!Lots of details to learn. Several components to build(building gcc twice: once for gcc + once for compilers that need the C library).Lots of decisions to make(such as C library version and configuration for your platform)Need kernel headers and C library sourcesNeed to be familiar with current gcc issues and patches on your platformUseful to be familiar with building and configuring toolshttp://www.aleph1.co.uk/armlinux/docs/toolchain/toolchHOWTO.pdfcan show you how fun it can be!21Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Toolchain building utilitiesBuildroot: http://buildroot.uclibc.org/Dedicated Makefile to build uClibc based toolchainsand even entire root filesystems.Downloads sources and applies patches.Crosstool: http://www.kegel.com/crosstool/Dedicated script to build glibc based toolchainsDoesn’t support uClibc yet.Downloads sources and applies patches.26Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Toolchains useful resourceseLinux.org toolchain page:http://elinux.org/Tool_Chains29Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Free Software tools for embedded systems GNU / Linux workstationEmulators8Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008glibchttp://www.gnu.org /software/ libc/License: LGPLC library from the GNU projectDesigned for performance, standards compliance and portabilityFound on all GNU / Linux host systems Quite big for small embedded systems: about 1.7 MB on Familiar Linux iPAQs (libc: 1.2 MB, libm: 500 KB)36Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008chrootAvailable in all GNU/Linux distributionsUsage:chroot <dir> [command]Runs a command or an interactive shellwith a special root directory.Standard usage: Internet serversServices executed in chroot jails: even when compromised,the service cannot gain access to the rest of the system.Usage for embedded system development:Develop and test a new root filesystem on the development host.Very easy to use when the host and target have the same CPU instruction set.Used by LFS (Linux From Scratch).Also used by Scratchbox: Qemu makes the usage of target binaries transparent./binlibetchttp/libetcbinchrootjail ... Support servicesUseful if you don't have your own support resourcesLong term support commitment, even for versions considered as obsolete by the community, but not by your users!44Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Commercial toolsetsCaution: commercial doesn't mean proprietary!Vendors play fair with the GPL and do make their source code available to their users, and most of the time, to the community.As long as they distribute the sources to their users, the GPL doesn't require vendors to share their sources with any third party.No issue with all the GPL sources developed by or with the community.Graphical toolkits developed by the vendors look proprietary. Their licenses are not advertised on their websites! You have to be a customer to know or get a free preview kit to know.35Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Free Software tools for embedded systems GNU / Linux workstationVarious tools34Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Emulators SummarySystem emulatorsUseful to experiment with a full system, including the kernelqemu: x86, x86_64, arm, sparc, ppc, mipsSkyEye: several arm architecturesUser emulatorsUseful to run or debug user space binaries for other CPUsqemu: x86, arm, sparc, ppc, mips20Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Platform specific toolchains (2)ColdfireCode Sourcery (supports ELF, GNU/Linux and uClinux):http://www.codesourcery.com/gnu_toolchains/coldfirePowerPCCode Sourcery (supports GNU/Linux and EABI)http://www.codesourcery.com/gnu_toolchains/power.html49Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Sysgo Koan Software http://sysgo.comELinOS development toolset,in particular based on Eclipseand the Linux Trace Toolkit.Includes FreeToolBox, a freely downloadable compiling and rootfs creating toolchain.Supports i386, arm and ppc.Hard realtime support with their own microkernel (PikeOS),an approach similar to RTAI.http://koansoftware.comMakers of KaeilOS(http://koansoftware.com/kaeilos/), a GPL embedded Linux distribution for industrial applications.KaeilOS supports i386 and popular arm platforms. Other platforms supported upon request.Includes several graphical toolkits and supports hard realtime (RTAI, Xenomai, preemption patches).Unfortunately, KaeilOS is GPL but not available for public download.16Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Standalone toolchain buildBuilding a crosscompiling toolchain by yourself is a difficult and painful task! Can take days or weeks!Lots of details to learn. Several components to build(building gcc twice: once for gcc + once for compilers that need the C library).Lots of decisions to make(such as C library version and configuration for your platform)Need kernel headers and C library sourcesNeed to be familiar with current gcc issues and patches on your platformUseful to be familiar with building and configuring toolshttp://www.aleph1.co.uk/armlinux/docs/toolchain/toolchHOWTO.pdfcan show you how fun it can be!21Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Toolchain building utilitiesBuildroot: http://buildroot.uclibc.org/Dedicated Makefile to build uClibc based toolchainsand even entire root filesystems.Downloads sources and applies patches.Crosstool: http://www.kegel.com/crosstool/Dedicated script to build glibc based toolchainsDoesn’t support uClibc yet.Downloads sources and applies patches.26Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Toolchains useful resourceseLinux.org toolchain page:http://elinux.org/Tool_Chains29Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008Free Software tools for embedded systems GNU / Linux workstationEmulators8Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008glibchttp://www.gnu.org /software/ libc/License: LGPLC library from the GNU projectDesigned for performance, standards compliance and portabilityFound on all GNU / Linux host systems Quite big for small embedded systems: about 1.7 MB on Familiar Linux iPAQs (libc: 1.2 MB, libm: 500 KB)36Free Software tools for embedded systems © Copyright 20042008, Free ElectronsCreative Commons AttributionShareAlike 2.5 licensehttp://freeelectrons.comJan 24, 2008chrootAvailable in all GNU/Linux distributionsUsage:chroot <dir> [command]Runs a command or an interactive shellwith a special root directory.Standard usage: Internet serversServices executed in chroot jails: even when compromised,the service cannot gain access to the rest of the system.Usage for embedded system development:Develop and test a new root filesystem on the development host.Very easy to use when the host and target have the same CPU instruction set.Used by LFS (Linux From Scratch).Also used by Scratchbox: Qemu makes the usage of target binaries transparent./binlibetchttp/libetcbinchrootjail...