ThinkPad t460s's National Bank edition. Compared to t450s, t440s and other models, t460s has a huge change, it is no longer just a simple T460 upgrade, it has a more lightweight and portable fuselage and more stylish design.
Appearance changes: More frivolous and more fashionable
The ThinkPad t460s does not extend the T460 square design, but uses a more modern wedge-shaped appea
This article is done original, reproduced please specify the source, respect for the original.Writing this article, I refer to some blogs on the Internet:Http://bbs.chinaunix.net/thread-3634524-1-1.htmlHttp://www.bkjia.com/gjrj/800182.htmlAlso refer to the "Linux driver development in detail" 3.4 chapters, to achieve the establishment of their own drive directory.The driving example in this article is: Linux device Driver Development detailed second edition of global Mem Tow, Song Baohua Editor'
Make [2]: *** no rule to make target 'drivers/Char/tianc_ LCD .o ', needed by 'drivers/Char/built-in.o'. Stop.
Make [2]: *** no rule to make target 'drivers/Char/tianc_ LCD .o ', needed by 'drivers/Char/built-in.o'. Stop.
Make [1]: *** [Drivers/Char] Error 2
Make: *** [
Control program.In addition, routing and address resolution are handled by the kernel.
Loadable Modules
The features provided by the Linux kernel can be extended at run time, that is, when the system is up and running, we can add or remove functionality from the kernel to the kernel.Code that can be added to the kernel at run time is called a "module."The Linux kernel supports several types of modules, including but not limited to device drivers.Each module consists of target code
How to use the device tree of linux drivers and how to use the device tree of linux drivers
The Device Tree describes the hardware from the software perspective, and DTS is the Device Tree source file. DTC is responsible for converting DTS to DTB, and DTB is the binary form of DTS for machine use.
The Device Tree is a tree structure. Each child node except the root node has a unique parent node, which can h
This is a 2014kdd, geographic location service paper.
Contents:
1) First, the author raised a valuable Question: recommend taxi drivers with routes that can be carried to the guests at the minimum cost.
2) Secondly, the novelty of the problem is that in the past, there were scattered recommendation points. This paper is a recommendation route. It can be said that the location service provided goes further.
3) then, two sub-problems are pointed out: a)
The stream device driver is actually the driver for exporting standard stream interface functions. This is the definition above. In wince, all stream devices export stream device interfaces, so that Device Manager in wince can load and manage these stream device drivers.
Architecture of stream device driver
First, I declare that I copied this image. When wincestarts, oal(oal.exe) First loads the kernel. DLL, and then kernel. DLL load device. DLL, devi
device in the private_data member that represents the opened file pointer filp for other operation functions.
Release Operation:
int yjpLED_release(struct inode *inode, struct file *filp){filp->private_data = NULL;return 0;}
Release the content allocated by open in filp-> private_data.
Write operation:
ssize_t yjpLED_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos){ssize_t retval;struct yjpLED *dev;dev = filp->private_data;if(down_interruptible(dev->sem))return -ERE
Poll for linux drivers and poll for linux driversPOLL operations
1. POLL execution process:
Poll is a system call. Its kernel entry function is sys_poll. sys_poll calls do_sys_poll directly without any processing. The execution process of do_sys_poll can be divided into three parts:
1. Copy the input pollfd array to the kernel space. Because the copy operation is related to the array length, this is an O (n) operation, in do_sys_poll, the code in this
This document describes how to use ctl_code to communicate with a Windows NT driver. generally, user-Mode Applications can communicate with kernel-mode drivers by calling createfile and deviceiocontrol, if a driver in the kernel state wants to perform similar operations with another driver, how can this problem be achieved? Next, we will provide a detailed description.
The main idea is to first get the handle of another driver, then construct an IRP,
If you are interested in Linux user-state driver development, please read this article, otherwise please drift over.user-space Device Drivers in linux:a First Look | initial knowledge of Linux User state device driversuser-space Device Drivers in linux:a first look Mats liljegrensenior software ArchitectDevice drivers in Linux is traditionally run in kernel spac
interactions, the corresponding recommendation system is also for smart devices such as smart phone development. Indeed, the problem of building a mobile referral system for the taxi industry is still a lot of space.Recently, the rich GPs trajectory of taxis has made it possible to do a car rental in the field of new methods. A lot of energy into the use of taxi trajectory data to do mobile referral system. These systems can extract energy-ecient traffic patterns from historical trajectory data
Under Windows 9x, drivers can be divided into sound card drivers, graphics drivers, mouse drivers, motherboard drivers, network device drivers, printer drivers, scanner
TIPS:1. please install the driver in sequence. The downloaded driver is an executable file, but it is not installed only when the file is released. By default, it is released to C: in the/Drivers/win/*** directory, go to the file directory to continue the installation.2. before installing WINXP, you need to change the hard disk to compatible mode in the BIOS. Otherwise, the system will prompt that the hard disk or blue screen cannot be found during in
Label: Dbvisualizer 8.0.10 connecting Oracle database error 172001Cause: Database driver error Ojdbc14.jar version is too low to be replaced by Ojdbc6.jar. To remind you, Ojdbc6.jar is much higher than the Ojdbc14.jar version, because 6 of it means support for jdk1.6, while 14 means supporting jdk1.4. Please note that also useful 14 and since the version is very high quick change, because the new version solves a lot of bugs. The following describes the JDBC overview and several
A device driver is used as a translation between hardware and the application that uses hardware (user code) or the kernel, which hides the details of the hardware's work behind the scenes, thereby simplifying programming. Programmers can use a set of standardized invocation methods (system calls) to write advanced application code without having to care about the specific hardware it will control or the processor on which it is running. With a well-defined internal application programming inter
Many Linux application developers and Linux Device Driver developers are excited and excited in the face of constantly upgrading linux kernels, GNU development tools, and various graphic libraries in Linux environments. I am excited that new software and tools provide me with more powerful functions. It is very tedious to adapt to the features of new software and build a new environment. This article will discuss how to learn Linux device drivers in t
The sample device drivers encoded with the Windows CE platform builder come in two forms: Monolithic And Layered . Source code for a monolithic driver consists of both interrupt service thread code and platform specific code. in contrast, layered device drivers split the code into an upper layer called the Model Device Driver (MDD) and a lower layer called the platform dependent Driver (PDD ). the MDD layer
---restore content starts---Linux device driversOne, the role of device-drivenThe most popular explanation for device drivers is " Drive hardware Device Actions ". Drive and the underlying hardware directly to deal with, according to the specific work of the hardware device, read and write device registers, the completion of the device polling (polling (Polling) is a CPU decision how to provide peripheral equipment services, also known as "programmed
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