deep linking android

function of the driver module crashes for some operation, which causes the initialization function to fail back properly. 2, in useRmmodwhen the command unloads the drive, the system invokes the Unload function, and only if the Unload function returns successfully.Linuxthe driver will be uninstalled if the Unload function is blocked,Rmmodcommand will also be blocked, unable to perform to uninstallLinuxthe code for the drive module. The root of this problem is the Unload function, so just replac

Linux drivers is very important, is to modify the Linux driver source code, should try not to modify the Linux The driver interface. In a complete Linux Drive, mainly consists of internal processing and hardware interaction two parts. If the inter-Linux porting between different versions , the main porting of the first part, on different hardware platforms, then the main second part. Software 1308 class 31st Zhang Fan Blog Park address: http://home.cnblogs.com/u/sxauzzz/

Drivers The first 5 steps above are the next three steps in how to write a Linux driver to make Linux drivers work correctly. 6.3 First Linux Driver: Count the number of words1. first establish The directory where the Linux driver is stored, and then create the source code file. Finally write a makefile file2. writing The skeleton of a Linux driverInstall Linux driver:insmod Word_count.koTo see if word_count is installed successfully : lsmod | grep word_countUninstall Linux driver:rmmod

This article introduces that many software in Linux is not provided as binary installation package, but rather provides source code directly.Reasons for not providing installation packages: If you provide an installation package, you will need to provide a binary installation package for each version of Linux. Linux has a very large kernel version, so in order to reduce the size of the distribution package, the source code is provided directly for the user to compile and run directly.Git is a so

configure the linux modules in the kernel. config linux driver is hosipital in three ways: compiling the driver module, writing the near-core, and from the linux kernel removal. Fconig: This file is available for each module directory that you want to connect to the Linux kernel. This file is primarily used to define the menu displayed by the Makemenuconfig command, and in addition totheKconfig file, you can import Kconfig in other directories file. Makeconfig: General and kconfig

The sixth chapter mainly introduces the Java programming Interface program under the Android environment. Includes LED interface, serial port, ZigBee and driver, Wi-Fi interface, player and so on.(1) LED driver circuit: GPIO interface, Port group GPJ3 contains six control registers: control register, pull-up register, data register. The function of the LED character device is open, release, read, write, ioctl. The make is compiled in the test to get t

The Development Board is the main hardware device for developing and learning embedded technologies, because when Linux drives require access to hardware, they are difficult to emulate on a PC, so they need to be debugged and tested on boards with these hardware. Through the introduction of the s3c6410 Development Board, the Development Board of the internal structure and functional characteristics of the further understanding of the Development Board to achieve a successful installation of the

extinguished. The ARM processor has multiple registers, by setting the values of different registers. You can set the status of the LED PIN, open or disable the pull-up (pull-up) circuit, and control the light and off of the LEDs.4. Control LEDLED drivers can use the following two ways to control LEDs:The LED is controlled by a string,Control led by l/0 command;To control LEDs, use both of these methods. The LED driver must receive the corresponding data. If the LED is controlled by a string. Y

. Of course, there is only one instance in the stack, so any activity opened by this instance will be opened in a separate task stack.Example:1, the current task stack S1 The situation is ABC(ABC startup mode is Standard or Singletop ), When you start activity D for a single instance, you create a new task stack S2 and put D in. Opening any of the ABC again from Activity D will create a new S3 task stack and put this activity into. At this point there will be three task stacks S1, S2, S3. 2, t

HelpThis is the ADC driver for friendlyarm Mini2440 development boardsnotes:the touch-screen-driver required this optionNext, according to the driver's configuration definition, the corresponding drive target file into the kernel, open the Linux-2.6.32.2/drivers/char/makefile file, add the following red part of the content:obj-$ (CONFIG_JS_RTC) + = JS-RTC.Ojs-rtc-y = RTC.O obj-$ (config_leds_mini2440) + = MINI2440_LEDS.Oobj-$ (CONFIG_MINI2440_ADC) + = MINI2440_ADC.O# Files generated that shall

Guide Pack Repeat this problem for a whole day!!The first method under the Gradle file to see if there is a duplicate package if there is so everything is a cloud minutes to fix, the most abominable is in the gradle there is no.If you can't find it in Gradle, think about it. The project root directory has a. idea folder in the root directory of the project. Under this folder there is aLibraries directory The imported packages in the project are compiled into XML files to delete the corresponding

soon as possible and switch to the foreground4. life cycle analysis in exceptional situations ) Situation1: A change in resource-related system configuration has resulted inActivitybe killed and re-created Example: Current Activity is in a vertical state, and if you suddenly rotate the screen, the activity is destroyed and recreated by default due to changes in the system configuration. in this unexpected situation, the system calls Onsaveinstancestate to save The state of the

S3C6410 is a low-power, cost-effective SC (reduced instruction set computer, introduced by Samsung,Compact instruction set computer processor, which is based on the ARM11 kernel.OK6410 Development Board with "core board + backplane" structureInstall serial debugging tool: MinicomFirst step: Detect if the current system supports SB-turn serial portLsmod | grep usbserialStep Two: Install Minicomsudo apt-get install minicomStep Three: Configure Minicomsudo minicom-sEntering the "Serial Port Setup"

The third chapter mainly introduces Git. Git is not the technology to learn about Android porting and Linux kernels, but for those who want to delve deeper into the underlying technology, GIT will be an essential tool in the learning process.The best way to learn new technologies is not to read technical books or to view articles written by cattle online, but to read the source code of interest. Because the source code is the best embodiment of the re

provides a branching concept. In other words, the person participating in the development creates a branch for each modification so that the commit does not affect the code of the main branch after the modification.Local branches are designed to isolate changes to different parts of the main branch. Use the git checkout command to switch between different local branches. It is meaningless if you only operate locally.Using Git to manage your source code will use a remote git hosting server. GitH

Git is a complex feature that makes your development faster and more manageable, especially with friendly interactions and feedback on open source projects.Familiarity with some of the GIT instructions can help developers avoid being interrupted by external factors or even delaying the project's check date. The submission of the specified code base requires RSA authentication, and the public key is required to determine that the device can submit the management code base.If the source code is th

Setting up the test environment for S3C6410 Development BoardI. Installing the serial debugging tool: Minicom1. Using the command Lsmod | grep usbserial to detect if the current system supports USB to serial port2. Install the minicom using the command apt-get installation minicom3. Configure Minicon with the command minicom-s4. Use the command minicom test the Minicon whether the normal useTwo. Burn and write Android systemErase Nandflash with Eboot1

example of this book. This book mainly introduces the Development Board debugging environment and how to install the Android system on the Development Board. The Linux driver examples in this book provide the Untu Linux, Android Simulator, and Development Board 3 operating methods (except Linux drivers that run on a specific platform) that involve special hardware.This main stubble only describes how to in

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

during the development phase, which is removed when the Linux driver is officially released. The output of the PRINTK function can be controlled by compiling instructions in the C language.3. Data interaction through a virtual file system (/PROC)In Linux file systems,/proc is often used as a tool for data interaction between kernel space and user space. /proc is a virtual file system, which is a memory map. All operations on/proc are read and write to memory. So the speed of reading and writing