linux kernel driver tutorial

Linux Device Driver category, character device driver, how to add cdev to the kernel ?, Driver category cdev 1. Linux Device Driver category By hardware of Managed Devices Character De

Adding a driver to the android kernel is actually adding a driver to the Linux kernel. It mainly adds vertex information to two files, one is the kconfig file and the other is the MAKEFILE file. For example, if the driver you adde

A WiFi module was used in the recent project, the master being mt7612u, and the USB interface. Use of Linux version 2.6.35, in the process of compiling the driver encountered a lot of problems, especially in this record. Get the source MTK official website Drive. Contains Windows, Linux, and drivers under the Mac. I modified the GitHub drive. Add a new platform I

1. Why should we learn the kernel? Some people want to learn the kernel, while others do not. If you want to engage in system development or driver development in the future, you must learn the kernel. I just got started with the kernel and mainly learned

protocol stack (network stack) provides a rich network protocol implementation for Linux. The virtual file system (VFS) hides the specifics of each file system and provides a unified interface for file operations. Device driver (DD): A large amount of code in the Linux kernel is in device drivers that co

Install Nvidia graphics card driver in Linux: Disable The Nouveau kernel driver. Method System: Red Hat Enterprise 6 (32-bit) video card: after downloading the driver from the Nvidia official website, Nvidia Gforce 7300GT directly runs the installation in text mode. The foll

Advantages and disadvantages of Linux device driver dynamic kernel insertion and direct integration into the kernel analysis Introduction: The company made a Linux-based Ethernet interface board, which is currently maintained by me, the main CPU of this board uses PowerPC, r

Advantages and disadvantages of Linux Device Driver dynamic kernel insertion and direct integration into the Kernel Analysis Introduction: The company made a Linux-based Ethernet interface board, which is currently maintained by me, the main CPU of this Board uses PowerPC, r

DMESG can see the last line more:[2333.481131] Goodbye world ...This is exactly the "Goodbye World ..." printed in the First_drv_exit function, and the same principle as the Insmod First_drv.ko, when the Rmmod First_drv.ko is executed, it is equivalent to calling First_ Module_exit (First_drv_exit) in drv.c, and then calls the First_drv_exit function to print out the "Goodbye World ..." message.In fact, Ubuntu each time only the driver module without

I haven't compiled the kernel for a long time. Recently I want to get the driver. I checked that there are two folders under/usr/src, which are empty and do not have any kernel source code.I used centos 5.1. In fact, the Red Hat series did not include the Linux kernel source

virtual address, theoretically we can directly read and write the I/O memory resources like the read/write Ram. To ensure the cross-platform portability of the driver, we should use special functions in Linux to access the I/O memory resources, instead of the core virtual address pointer. [MMAP] MMAP is used to map a device, which means that an address in the user space is associated with the device memor

: "Hello World" ========================================================== ===================================== */ # Include # Include Module_license ("dual BSD/GPL "); Static int hello_init (void) { Printk (kern_alert "Hello world enter "); Return 0; } Static void hello_exit (void) { Printk (kern_alert "Hello World exit "); } Module_init (hello_init ); Module_exit (hello_exit ); Module_author ("ztz0223 "); Module_description ("a simple hello World module "); Module_alias ("a simplest module

Wait Queue: In Linux driver programming, waiting queues can be used to implement blocking of processes. The wait queue can be thought of as a container for the save process, and the process is placed in a wait queue when the process is blocked; When the process is awakened, the process is fetched from the wait queue. waiting for the definition and initialization of the queue wait_queue_head_t Declare_wait_

Original URL: http://www.apkbus.com/android-98520-1-1.htmlIn the previous sections, the Linux drivers were compiled into modules and then loaded dynamically for testing. The dynamic load driver module does not automatically mount with the Android system booting, so the Android system must be loaded with the Insmod or modprobe command every time the Linux

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:

-pointer advanced learning, you can focus on video tutorials: C language Embedded Linux advanced programming 2) syntax extension for C language These "Weird C code" that you're looking at is actually a GCC compiler's extended syntax for standard C: statement expressions, local tags, __attribute__ attribute declarations, variable parameter macros, and so on. The syntax for these GCC extensions is widely used in the

"Linux device Driver development in detail: Based on the latest Linux 4.0 kernel" China-pub today on-line into the pre-sale stage: http://product.china-pub.com/4733972650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/71/30/wKiom1XISFmwMoxqABlXLgvpEio656.jpg "title=" Linux