Linux Device Driver Article 5: concurrency and final state in the driver, linux Article 5Summary
In the previous article, I introduced the debugging method of the linux driver. This article describes the concurrency and status encountered in driver programming and how to handle concurrency and competition.
What is conc
We open "Drive Wizard" software in the computer, the effect is as follows
In the Open interface we just click on the second "driver" below
Then you will automatically get all the drivers you want to upgrade. We click on "Upgrade" to start downloading the driver files.
The driver will be installed automatically when the download is complete.
It took almost a week to learn drivers. During this period, I was busy learning Linux application programming, search driver, and kernel-related books for further study. In the previously friendly driver routines, the knowledge involved is very limited. It is imperative to study more driver source code and learn more about dr
Linux driver development kernel module compilation-Makefile getting started tutorial, driver development makefile
I. Module Compilation
In the previous kernel compilation, we mentioned that driver compilation is dividedStatic CompilationAndDynamic CompilationStatic compilation is to directly compile the driver into th
MySQL loads the JDBC driver and mysql loads the jdbc driver.
First, install the MySQL database. MySQL5.5 is installed. The installation steps are not described here. Please note that if the installation process stops at the start service and cannot continue, please refer to my blog post "when installing MySQL5.5, the start service does not respond, solution", it should help you solve the problem.
Nex
Register drip Taxi Driver's step process and method:
1. The driver friend clicks directly to visit above drops the official website website to register
2. In the back of the mobile phone registration process to fill in the vehicle information, as shown in the following picture: then click "Next".
3. Enter the name of the driver and ID number, upload driver's license and travel permit photos. Upload pho
The driver can be compiled together with the kernel or separately as a module. However, to facilitate driver debugging, the driver is usually compiled in a modular manner.
1. Compile the driver in modular Mode
The Linux kernel is 2.6.12 and the fl2440 driver is used as an ex
Introduction of character device driver The app uses open, read, write, and other functions to operate the underlying hardware. The driver also has corresponding functions such as Xxx_open. How to find a driver in a function depends on the driver framework.II. Building a Driver
This digest from my my book fixing "embedded Linux driver template explaining and project practice"Initially it seems that Linux device driver development involves a lot of content, and the devices that need to be driven vary widely. Actually doing a time-driven look back looks mostly like the following points:(1) classify the drive. Which type of drive to generalize first. Collation properly re-use the ker
The computer installs the new system to install the drive is the essential process, although the system can automatically identify solves some driver installment problem, but wants to completely solve the drive problem or needs to install each kind of corresponding drive, now the driver software Ling Lang everywhere lets the person not know chooses which section is good. Small series is commonly used to dri
Knowledge Point Analysis:
User no host number, Web page also monitor the user's machine host number, only with the Driver wizard and Driver Life Update sound card driver is not successful, prompted:
Operation Steps:
The main reason is that the Windows XP system has completed its own sound card driver installa
1, download the Driver Wizard, and then install, installation completed, open the Drive Wizard.
2, into the Driver wizard interface, click on the "Driver" above, into the "Driver" interface.
3, in the "Driver" interface, we click on the "Standard mode" of thi
The server cannot call driver = {Microsoft text Driver (*. txt; *. CSV)}. After checking for several hours, it is found that the driver called by ASP requires an Internet Guest Account (iusr_xxx)List folder DirectoriesPermission. It is strange that only the iusr_xxx permission is required to call driver Microsoft Acces
database for/"Edit continue /", conflicts with the/driver option of link;3.1.4 Preprocessor definitions. Some of them are not clear, and some may be used by DS. Below is a dsw I use.Rdrdbg, srvdbg, FPO = 0, Win32 = 100, std_call, condition_handling = 1, nt_up = 1, nt_inst = 0, _ nt1x _ = 100, winnt = 1, _ win32_winnt = 0x0400, win32_lean_and_mean = 1, devl = 1, _ DLL = 1, _ x86 _ = 1, $ (CPU) = 1, ntversion =/'wdm/', winver = 0x500, ntdebug = ntsd,
How to Learn about camera driver in Linux: (2) how to analyze camera driver by Using Virtual Drive vivi, linuxvivi
1. Run the "strace-o xawtv. log xawtv" command to obtain the following call information:// 1 ~ 7 is called in v4l2_open1. open2. ioctl (4, VIDIOC_QUERYCAP
// 3 ~ 7 is called in get_device_capabilities3. ()Ioctl (4, VIDIOC_ENUMINPUT // lists the input sources. VIDIOC_ENUMINPUT/VIDIOC_G_INPUT/VID
Hardware Platform: ThinkPad t400
Operating System: Ubuntu 9.10
NOTE: For the installation process of this video card, see http://wiki.cchtml.com/index.php/ubuntu_jaunty_installation_guide.
1. ATI official driverProgramDownload
Web: http://support.amd.com/us/gpudownload/Pages/index.aspx
Download the Linux driver suitable for your ATI graphics card, because my computer is ThinkPad t400, 32-bit Ubuntu 9.10.
So I chose Linux x86 and the
Problem:A new computer system, with Bluetooth drivers and services turned on, means Bluetooth cannot be found. Solution:Download a Master Lu, upgrade or reinstall the system's bluetooth, and do not forget to check the following options: Allow devices to search ..... PS:Master Lu can detect the information of your computer hardware and find the appropriate driver accurately. I tried to find the driver usi
I. Overview
Speaking of writing I2C drivers in Linux, there are currently two main methods: one is to treat I2C devices as a common character device, the other is to use the Linux I2C driver architecture. The two drivers are compared below.
The advantages of the first method (corresponding to the disadvantages of the second method) include:● The idea is straightforward and you don't need to take the time to understand the complex I2C subsystem operati
Http://www.linuxjournal.com/article/7466June 1st, 2004 by Greg kroah-Harman
In
Software
NowYou can control USB hardware without touching the kernel and even makeYour driver run on BSD-based OSes with no code changes. Greg showsWorking Example for using the cross-platform USB library, libusb.
Last time we discussed how to create a simple USB driver thatControlled a USB led device manufactured by delcom
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