linux wireless driver development tutorial

/** * Author:hasen * Reference: Linux device Driver Development Details * Introduction: Android Small rookie Linux * device Driver Development Learning Journey * Topic: device drivers that support polling operations * DAT

0X11000C20Gpx1dat 0X11000C24 led4 3-4 3-5 Gpf3con 0x114001e0Gpf3dat 0x114001e4 Here to note : ARM architecture is IO memory, must be mapped ioremap (); Its role is the mapping of physical memory to virtual memory . Using the Writel readl These two functions, the detailed explanation will not be on the back, look at the simple usage first:Take LED2 as an example, the following is address mapping and reading and writing: int *pgpx2con ; int *pgpx2dat; Pgpx2con = Ioremap (Gpx2con, 4); Pgpx2dat

buzzer is to set the buzzer pin as the input mode, which is used by the gpiolib to achieve. }The buzzer is divided into two kinds, one is active buzzer, the other is passive buzzer. A PWM method must be used for the passive buzzer to make the buzzer sound. The active buzzer can be driven by the PWM method, or it can be sent directly to a high level to make the buzzer sound, but the frequency can not be changed.The code contents of the Pwm_set_freq function are as followsNBSP;TCFG0 is set in Ubo

I have been reading the code. Today I am going to try it. I will take the tiny6410 LED lamp to open the knife. Although I write it myself, it is actually referring to the routine. However, the basic idea is quite clear. Define this drive as MISC device (Miscellaneous Device Driver), including the header file miscdevice. h. In fact, the so-called miscellaneous driver is the device

Tags: parameter usr author the development Linux drive MPI build modDeclare the parameter names, types, and permissions you want to pass in the driver's module.Module_param (name, type, permission) of the variable;The first example#include #includeStatic Char*p_name ="USR"; Module_param (P_name, Charp, S_irugo); Module_parm_desc (P_name,"This is a char * string.");Static int__init Hi_init (void) {PRINTK (Ke

. LWE is a tool for wireless network configuration in Linux, including Kernel support, user-layer Configuration tool, and Driver Interface Support. Points. Many wireless network cards now support LWE, and mainstream Linux versions, such as RedHat

I. Linux USB driver levels 1. devices, configurations, interfaces, and endpointsThe logical organization of a USB device consists of four layers: device, configuration, interface, and endpoint. A device usually has one or more configurations: Each USB device provides different levels of configuration information, which can contain one or more configurations, different Configurations enable devices to

(Demo_init); Module_exit (Demo_exit); Module_author ("libra13179"); Module_license ("GPL v2");MakefileVERS = $ (Shell uname-R) # Kernel Modulesobj-M + = for the module compilation. #EXTRA_CFLAGS /c3>=-g-o0build:kernel_moduleskernel_modules: -c/lib/modules/$ (kvers)/build m=$ (CURDIR) Modulesclean: -c/lib/modules/$ (kvers)/build m=$ (CURDIR) CleanMake TestUse the DMESG directive to viewUse Cat/proc/devices to see demo informationNow mainly introduces the use of DEMO.C in functions and macr

the exported file. Click Finish. If the Import fails, check my tutorial carefully. Application, exit. After the import, there will be several more paths, including the header file path in the kernel directory. Create a new. c file The Code was previously written. /*************************************** **************************************** * ********************************** File Name: led_drive.c * Introduction: ok6410 LED

Embedded Linux Driver Development tutorial (kernel driver, watchdog technology, touch screen, video capture system)Http://www.ibeifeng.com/goods-475.htmlConsulting QQ2110053820Course Lecturer: Mr. HanCourse Category: LinuxSuitable for people: advancedNumber of lessons: 109 h

("libra13179"); Module_license ("GPL v2");Kvers = $ (Shell uname-R) # Kernel Modulesobj-M + = for the module compilation. #EXTRA_CFLAGS =-g-o0build:kernel_moduleskernel_modules: -c/lib/modules/$ (kvers)/build m=$ (CURDIR) modules# @echo $ (kvers) Clean: -c/lib/modules/$ (kvers)/build m=$ (CURDIR) CleanView Code#include #include#include#includeintMainintargcConst Char*argv[]) { intFD; intval =1; FD= Open ("/dev/demo0", O_RDWR); if(FD 0) {printf ("can ' t open!\n"); return-1; } Els

During this time, I have been working on Android drivers. The underlying Android driver is exactly the same as that of Linux. So I am going to make a special topic here. I will summarize the Linux driver and lay a solid foundation for the next driver

"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