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-m ' helloworld-master '//Submit files to the repository# git Log//display log information# git checkout helloworld.txt//immediately revert to the state of the most recent commit. Create a local branch# git branch//See which branches are in the current repository# git branch new-branch//Create a new branch# git branch-d new-branch//Delete a newly created branchSwitch to local branch# git checkout new-branch//Switch the current local branch to New-branch# git Add helloworld.txt#git commit-m hello

line: Do you aggreeto the above license terms? [Yes or No]The installer is asking if you would like to comply with the license agreement you have just seen. Of course agree, enter "Y" or "yes" to return. Installing the software automatically installs the JDK into the/usr/java/directory.#vi/etc/profileAdd the following content to the insideExport java_home=/usr/java/jdk1.6.0_27Export Java_bin=/usr/java/jdk1.6.0_27/binExport path= $PATH: $JAVA _home/binExportclasspath=.: $JAVA _home/lib/dt.jar: $

3rd. Getting Started with Git3.1 Installing GitUse this section to learn about Git installation steps.3.2 Viewing git documentsThis section has been used to learn how to use the man command to view the help document for a specified command directly under Linux.3.3 Submission and acquisition of source codeThe steps are:To create a repository: Git initCommit a file to a local repository: git commitCreate a local branch: Git branchSwitch local branch: Git checkoutCreate an open source project on Gi

android-goldfish-2.6.29, where goldfish is the Android emulator for the simulated CPU.$ git checkout-b android-goldfish-2.6.29 origin/android-goldfish-2.6.29$ git BranchShow android-2.6.27* android-goldfish-2.6.29We have been working on the Android-goldfish-2.6.29 branch.d) Setting cross-compilation parametersOpen the makefile file in the kernel directory and point the cross_compile to the Arm-eabi compiler in the prebuilt you just downloadedCross_compile? = arm-eabi-Put ldflags_build_id = $ (p

the language tests theLinuxDrive, so it's easy to think about the useANDROIDNDKto testLinuxDrive, due toAndroid NDKalso useC + +to write a program, so you can take advantage of the previous section'sClanguage code, of course, plus someANDROIDNDKunique code. When usingANDROIDNDKTestLinuxThere are two things to do before driving. (becauseLinuxThe drive module does not follow theAndroidthe system starts and loads, so you must performbuild.shscript File InstallationWord CountDrive. Cannot start usi

electric groundLEDnumber is4)。 through to/DEV/S3C64 L OLEDsSend length to1to the4the string can control the4aLEDthe switch. Lindicates open,0indicates off. If the string is not long enough4equivalent to the back of the0. To create an LED -driven device file :Step 1 : Initialize the Cdev with the cdev_init function . Step 2 : Specify the device number. Step 3 : Use the cdev_add function to add a character device to the character device array in the kernel. Step 4 : Use the class_create macro t

initialization code that you want to provide to the Module_init macro, set the LED port to output, and register it with the kernel5. Write the logoff code to be provided to the Module_exit macro, primarily to unregister the Miscdevice device registered with the kernel in the initializationAlthough the LED driver is not complex, it only controls 4 LEDs, but the LED driver already includes the necessary parts of the Linux drive. A complete Linux drive consists mainly of internal processing and in

specify all the trap functions. The callback function is registered through the relevant mechanism.5) Write business logic: Any full Linux driver will do some work related to its functionality, and the COM driver will interact with the data at the rate of transfer. The specific business logic is related to the function of the driver. The business logic may consist of multiple functions, multiple files, or even multiple Linux driver modules. The specific implementation of the reader can be based

YHelpThis is a word count driver. It can get a word count from/dev/wordcount(2) Modify the Makefile file (3) Modify the Kconfig of the upper directorySOURCE "Drivers/char/word_count/kconfig"(4) Modify the Makefile file of the upper directoryobj-$ (conpig_word_count) + = word_count/After modifying the Linux kernel settings and recompiling the kernel, Linux drivers that were previously compiled with the linux kernel may not be installed due to a malformed format, so after recompiling the Linux

drivers of the source code is the same,thelinux driver module dependency, code reuse is divided into static and dynamic two kinds. Static reuse a piece of code can be compiled to eventually generate an executable file or library. This section describes a way to share code: module dependencies are also known as export symbols. Forcibly uninstall the Linux driver, if you write a linux driver is logically correct, then you can load and unload normally. If an exception occurs in an unexpected envir

directory4th Step: Modify the Makefile file of the upper directoryDeveloping and testing Linux drivers using eclipse1th Step: Build C Project2nd step: Establish C source code file link3rd Step: Set the Include path4th step: Compiling Linux driversTesting Linux drivers in eclipse1th Step: Import the Test_word_count.c file2nd step: Set the Include path3rd Step: Set Target4th Step: Build Project5th step: Run the test programAfter reading this chapter, this chapter has done some simple summary of t

4, write directly, if greater than 4, write only the first 4If the string being written is less than 4, it is equivalent to 0 later.It is best to read the Gpmdat current value before writing data to the Gpnmdat registerThe final test led driver, there are several methods:General program for writing control commands: Led drivers have two ways of interacting with device files: writing string data directly and I/O control commands.Test led driver with NDKTest LED driver using JavaThe LED driver is

the IP and subnet masks using the Linux command Ifconfig, and set the gateway with the route command.This chapter only describes how to install Android on the Ok6410-a Development Board. Of course, readers can also choose other boards, or they can do Linux drivers directly on the phone. Because of the different development boards and mobile phone installation of the Android method has a certain difference, so can not introduce the exhaustive.My Blog Park blog Address:http://www.cnblogs.com/xl93

processing and other fields.OK6410 Development Board based on Samsung's latest ARM11 processor s3c6410, has a strong internal resources and video processing capabilities, stable operation at 667MHZ above the frequency, Support MOBILEDDR and a variety of nandflash.ok6410 development boards integrate a variety of high-end interfaces, using the OK6410 board can also be used in other ways realistic Linux driver output debugging information, this is the serial communication.My Blog Park address is:

, intercept, and automate other work on the module structure's first address. Writes the unload-driven command to the script file. Executes the #sh build.sh uninstall the specified Linux driver module.The Force_kill_driver/bad_driver directory provides two faulty Linux drivers: bad_driver1 (Condition one), Bad_driver2 (condition two). The Bad_driver directory also provides a build.sh script file. Executing the script file will automatically compile and install the two error drivers.When installi

This chapter is mainly about the buzzer driver, the buzzer iss3cc6410Development Board with a hardware device, this section will introduce the principle of the buzzer, and achieve a complete buzzer driver. This section describes theLinuxthe way the drive is divided into multiple files. The data structure, function code in these files can also be used by several different drivers, so this is also an important method of code reuse. In theLinuxDrive code reuse, for exampleCThe language source code

, dynamic reuse is a module dependency, and one driver uses symbols derived from another driver module.Restart the Development Board or emulator. ko files will automatically disappear. Use exception Condition Uninstall: 1. Initialize function unload. 2. The Unload function is blockedTo unload a driver, you need to enter a bunch of commands to query the first address of the module struct, install and download the Force_kill_driver driver.The driving principle of the buzzer is basically the same a

function, and it is convenient to implement, the best way is undoubtedly to use the C language compiler instructions (#if, #else, #endif, etc.). Print Kernel debug information: PRINTKThe PRINTK function is prototyped as follows:asmlinkage int PRINTK (const char * fmt, ...)The PRINTK file is a simple 4-digit text file that is the default for that file.6 4 1 7If you want to modify the contents of the PRINTK file, require that any information be output to the console, you can execute the followin

OST (native) C program on Android simulatorUsing the Android NDK testDirectly manipulate device file testing using Java codeTest with the s3c6410 Development BoardCompiling the driver into the Linux kernel for testingDevelop and test Linux drivers with eclipse1. Building C Project2. Establish C source code file connection3. Setting the Include path4. Compiling Linux DriversTesting Linux drivers in eclipse1. Import the test_word_count.c file2. Setting the Include path3. Establish Targe4.build En

cross-compilation tool chainSecond, build the file system image production environment1. Create the root file system directory Rootfs and its subdirectories bin,sbin,boot,root,sys,srv,proc,usr, etc.2. Compile busybox1.7.0: (Required source Bundle: BUSYBOX-1.7.0.TAR.BZ2)2.1 Decompression Source Package, enter the source directory;2.2 Configuration BusyBox: Do make menuconfig in the source directory, if you use the default configuration to exit, save, if you need to configure your own then change