making embedded systems design patterns for great software pdf
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
... 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
... 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
... 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
... " + 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
... 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
... 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
... 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
... 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
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Tài liệu Free As in Freedom: Richard Stallman''''s Crusade for Free Software pdf
... to the author to ask for permission. For software that is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision ... a cutting." For more information on the GNU General Public License, visit [http://www.gnu.org/copyleft/gpl.html.] In an information economy increasingly dependent on software and increasingly ... free software movement. The location is significant. Less than a month before, Microsoft senior vice president Craig Mundie appeared at the nearby NYU games make an underlying software platform...
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CHICKEN GENETIC RESOURCES USED IN SMALLHOLDER PRODUCTION SYSTEMS AND OPPORTUNITIES FOR THEIR DEVELOPMENT pdf
... particular interest for organic broiler production as practised in Europe. According to the rules for organic production, the broilers have to grow for at least 14 weeks before slaughter. Under ... birds have for the small-holder farmers for gift giving and religious rituals has to accounted for; this may mean that in some cases the improvement of local breeds is the only way forward.In ... are severe.• They are often utilized for several purposes simultaneously, and therefore may outper-form specialized commercial breeds when scored for multipurpose productivity.• Many indigenous...
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Free Software tools for embedded systems
... ) 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 .pdf can 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 .pdf can 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...
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- design patterns for great software
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