Tài liệu Android Wireless Application Development doc

... 30Upgrading the Android SDK 31Problems with the Android Software Development Kit 32Exploring the Android SDK 32Understanding the Android SDK License Agreement 32Reading the Android SDK Documentation ... Android Application Framework 35Getting to Know the Android Tools 35Exploring the Android Sample Applications 40Summary 41References and More Information 413 Writing Your First Android Application ... xmlns :android= "http://schemas .android. com/apk/res /android& quot;package="com.androidbook.multimedia" android: versionCode="1" android: versionName="1.0"><application...

... within the Apple Developer Documentation at https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreData/cdProgrammingGuide.html#//apple_ref /doc/ uid/TP30001200-SW1.This ... 2012VoiceRecorder App – Audio Recording and Playback[ 82 ] docsDir = [dirPaths objectAtIndex:0]; NSString *soundFilePath = [docsDir stringByAppendingPathComponent:attachmentName]; NSURL ... audio. 3. Next, we use the NSSearchPathForDirectoriesInDomains class to identify the application& apos;s document directory, then construct a URL to a le in that location named VCOR_Recording.caf,...

... firstTextbox = document.getElementById(“Text1”); firstTextbox.value = “Let’s type!”; //Getting from a text box var secondTextbox = document.getElementById(“Text2”); var youTyped = document.getElementById(“youTyped”); ... JQuery, the ready function is like $(document).ready(). The final code looks like this:// For an introduction to the HTML Fragment template, see the following documentation:// http://go.microsoft.com/fwlink/?LinkId=232511(function ... Select.js. 6. Add this code to the ready function: var selectControl = document.getElementById(“Controls”); var newOption = document.createElement(“OPTION”); newOption.text = “Date Picker”;...

... other Android books, including Android Wireless Application Development, Android Wireless Application Development Volume I: Android Essentials, Sams Teach Yourself Android Application Development, ... the Android Native Development Kit (NDK), Cloud-To-Device Messaging service (C2DM), Android Market In- Application Billing APIs, Google Analytics APIs, and more. Android Wireless Application Development ... book:nPart I: Advanced Android Application Design PrinciplesPart I picks up where Android Wireless Application Development Volume I :Android Essentials leaves off in terms of application design techniques.We...

... 144Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Using ready­made config filesDefault configuration files available for many boards / machines!Check if one exists in arch/<arch>/configs/ for your target.Example: if you found an acme_defconfig file, you can run:make acme_defconfigUsing arch/<arch>/configs/ is a very good good way of releasing a default configuration file for a group of users or developers.Like all make commands, you mustrun make <machine>_defconfigin the toplevel source directory.143Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Ready­made config filesassabet_defconfig     integrator_defconfig  mainstone_defconfigbadge4_defconfig      iq31244_defconfig     mx1ads_defconfigbast_defconfig        iq80321_defconfig     neponset_defconfigcerfcube_defconfig    iq80331_defconfig     netwinder_defconfigclps7500_defconfig    iq80332_defconfig     omap_h2_1610_defconfigebsa110_defconfig     ixdp2400_defconfig    omnimeter_defconfigedb7211_defconfig     ixdp2401_defconfig    pleb_defconfigenp2611_defconfig     ixdp2800_defconfig    pxa255­idp_defconfigep80219_defconfig     ixdp2801_defconfig    rpc_defconfigepxa10db_defconfig    ixp4xx_defconfig      s3c2410_defconfigfootbridge_defconfig  jornada720_defconfig  shannon_defconfigfortunet_defconfig    lart_defconfig        shark_defconfigh3600_defconfig       lpd7a400_defconfig    simpad_defconfigh7201_defconfig       lpd7a404_defconfig    smdk2410_defconfigh7202_defconfig       lubbock_defconfig     versatile_defconfighackkit_defconfig     lusl7200_defconfigarch/arm/configs example1Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Embedded Linux driver development Embedded Linux kernel and driver development Thomas Petazzoni / Michael OpdenackerFree Electronshttp://free­electrons.com/Created with OpenOffice.org 2.x150Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Loadable kernel modules (1)Modules: add a given functionality to the kernel (drivers, filesystem support, and many others)Can be loaded and unloaded at any time, only when their functionality is need. Once loaded, have full access to the whole kernel. No particular protection.Useful to keep the kernel image size to the minimum (essential in GNU/Linux distributions for PCs).10Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Contents (5)AnnexesQuiz answersSlab caches and memory poolsU­boot detailsGrub detailsInit runlevels151Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Loadable kernel modules (2)Useful to deliver binary­only drivers (bad idea)without having to rebuild the kernel.Modules make it easy to develop drivers without rebooting: load, test, unload, rebuild, load ... 144Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Using ready­made config filesDefault configuration files available for many boards / machines!Check if one exists in arch/<arch>/configs/ for your target.Example: if you found an acme_defconfig file, you can run:make acme_defconfigUsing arch/<arch>/configs/ is a very good good way of releasing a default configuration file for a group of users or developers.Like all make commands, you mustrun make <machine>_defconfigin the toplevel source directory.143Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Ready­made config filesassabet_defconfig     integrator_defconfig  mainstone_defconfigbadge4_defconfig      iq31244_defconfig     mx1ads_defconfigbast_defconfig        iq80321_defconfig     neponset_defconfigcerfcube_defconfig    iq80331_defconfig     netwinder_defconfigclps7500_defconfig    iq80332_defconfig     omap_h2_1610_defconfigebsa110_defconfig     ixdp2400_defconfig    omnimeter_defconfigedb7211_defconfig     ixdp2401_defconfig    pleb_defconfigenp2611_defconfig     ixdp2800_defconfig    pxa255­idp_defconfigep80219_defconfig     ixdp2801_defconfig    rpc_defconfigepxa10db_defconfig    ixp4xx_defconfig      s3c2410_defconfigfootbridge_defconfig  jornada720_defconfig  shannon_defconfigfortunet_defconfig    lart_defconfig        shark_defconfigh3600_defconfig       lpd7a400_defconfig    simpad_defconfigh7201_defconfig       lpd7a404_defconfig    smdk2410_defconfigh7202_defconfig       lubbock_defconfig     versatile_defconfighackkit_defconfig     lusl7200_defconfigarch/arm/configs example1Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Embedded Linux driver development Embedded Linux kernel and driver development Thomas Petazzoni / Michael OpdenackerFree Electronshttp://free­electrons.com/Created with OpenOffice.org 2.x150Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Loadable kernel modules (1)Modules: add a given functionality to the kernel (drivers, filesystem support, and many others)Can be loaded and unloaded at any time, only when their functionality is need. Once loaded, have full access to the whole kernel. No particular protection.Useful to keep the kernel image size to the minimum (essential in GNU/Linux distributions for PCs).10Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Contents (5)AnnexesQuiz answersSlab caches and memory poolsU­boot detailsGrub detailsInit runlevels151Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Loadable kernel modules (2)Useful to deliver binary­only drivers (bad idea)without having to rebuild the kernel.Modules make it easy to develop drivers without rebooting: load, test, unload, rebuild, load ... Modules can also be compiled statically into the kernel.100Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Files created by make modules_install (2)/lib/modules/<version>/ (continued)modules.aliasModule aliases for module loading utilities. Example line:alias sound­service­?­0 snd_mixer_ossmodules.depModule dependencies (see the Loadable kernel modules section)modules.symbolsTells which module a given symbol belongs to.All the files in this directory are text files.Don't hesitate to have a look by yourself!152Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Module dependenciesModule dependencies stored in/lib/modules/<version>/modules.depThey don't have to be described by the module writer.They are automatically computed during kernel building from module exported symbols. module2 depends on module1 if module2uses a symbol exported by module1.Example: usb_storage depends on  usbcore,because it uses some of the functions exported by usbcore.You can also update the modules.dep fileby yourself, by running (as root):depmod ­a [<version>]101Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Compiling the kernel in a nutshellmake xconfigmakemake installmake modules_install153Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008hello module/* hello.c */#include <linux/init.h>#include <linux/module.h>#include <linux/kernel.h>static int __init hello_init(void){    printk(KERN_ALERT "Good morrow");    printk(KERN_ALERT "to this fair assembly.\n");    return 0;}static void __exit hello_exit(void){    printk(KERN_ALERT "Alas, poor world, what treasure");    printk(KERN_ALERT "hast thou lost!\n");}module_init(hello_init);module_exit(hello_exit);MODULE_LICENSE("GPL");MODULE_DESCRIPTION("Greeting module");MODULE_AUTHOR("William Shakespeare");__init:removed after initialization(static kernel or module).__exit: discarded whenmodule compiled staticallyinto the kernel.Example available on http://free­electrons.com /doc/ c/hello.c102Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Embedded Linux driver development Compiling and booting LinuxLinux device files154Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Module license usefulnessUsed by kernel developers to identify issues coming from proprietary drivers, which they can't do anything about(“Tainted” kernel notice in kernel crashes and oopses).Useful for users to check that their system is 100% free(check /proc/sys/kernel/tainted)Useful for GNU/Linux distributorsfor their release policy checks.103Embedded Linux kernel and driver development © Copyright 2004­2008, Free ElectronsCreative Commons Attribution­ShareAlike 2.5 licensehttp://free­electrons.comFeb 27, 2008Character device filesAccessed through a sequential flow of individual charactersCharacter devices can be identified by their c type (ls ­l):crw­rw­­­­ 1 root uucp   4,  64 Feb 23 2004 /dev/ttyS0crw­­w­­­­ 1 jdoe tty  136,   1 Feb 23 2004 /dev/pts/1crw­­­­­­­ 1 root root  13,  32 Feb 23 2004 /dev/input/mouse0crw­rw­rw­ 1 root root   1,   3 Feb 23 2004 /dev/nullExample devices: keyboards, mice, parallel port, IrDA, Bluetooth port, consoles, terminals, sound, video...

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... CONCEPT AND THEORIES 2.1 Introduction 2.2 Intersatellite Link Developments 2.3 Optical Wireless Communication Concepts 2.3.1 Optical Wireless System 8 8 9 10 viii 2.3.2 System Performance ... 44 xiii LIST OF ABBREVIATIONS OWC - Optical Wireless Communication IsOWC - Intersatellite Optical Wireless Communication RF - Radio Frequency SCORE - Signal Communication ... kilometers apart. This has open up the idea to adapt optical wireless communication technology into space technology; hence intersatellite optical wireless communication (IsOWC) is developed. IsOWC...