microcell device

/** * Author:hasen * Reference: Linux device Driver Development Details * Introduction: Android small Novice Linux * device driver Development Learning Journey * Topic: Concurrency and race in Linux device drivers * date:2014-11- 04 */1, concurrency, and race concurrency (concurrency) refers to multiple execution units being executed concurrently and concurrently

Error 1:# insmod Memdev.ko insmod:cannot insert ' Memdev.ko ': Device or resource busy cause analysis: Due to the application of a static application of the device number of the character device driver, the main device number is 254, and the department The equipment number of the system has clashed, so we have to chan

The Android device selection list is displayed, and the Shell script of the specified Android device Console is displayed. If a PC is connected to multiple Android devices (including Android simulators), you must use adb-s deviceid shell when entering the Console. This article has compiled a Shell script file (which can be used in Linux or OS X, and bat or cmd in windows ).First, use the adb devices command

Transferred from: http://blog.csdn.net/yikai2009/article/details/8653697Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.Directory (?) [-] Blocking Blocking operations Non-blocking operation Blocking mode-read-implementation Blocking mode-write-implementation Non-blocking read and write operations Implementation of instance---read blocking Instance---key driver blocking implementation

Linux character Devices - automatically create device numbers and device nodesFirst write an example of automatically assigning a character device number and device node and the APPManual Installation steps:Insmod My_char_dev.koNo more device nodes to installThen the test ap

{Code...} has determined how the mobile device uses the computer version on the mobile terminal. require(dirname(__FILE__)."/lib/Mobile_Detect.php");$detect = new Mobile_Detect;$deviceType = ($detect->isMobile() ? ($detect->isTablet() ? 'tablet' : 'phone') : 'computer');if($_SERVER["SERVER_NAME"] == "nj.xxx.cn" ){ if($deviceType == "phone") { header("Location:http://m.xxx.cn/"); exit(); }} DeterminedMobile Devices At the Mo

When you safely delete a USB flash drive, you will often encounter a message saying "you cannot stop the 'general-purpose volute' device. Please stop the device later ." In this case, can I forcibly unplug the USB flash drive? Of course not! In this case, if you forcibly remove the USB flash drive, it is easy to damage the USB port of the computer or your USB flash drive. If you have important information o

] Objectforinfodictionarykey:@ "cfbundleversion"];NSLog (@ "==============1%@---%@", App_build1,app_build); //ios getting system Information //nslog (@ "identifier:%@", [[Uidevice Currentdevice] identifierforvendor]); //nslog (@ "Name:%@", [[Uidevice Currentdevice] name]); //nslog (@ "SystemName:%@", [[Uidevice Currentdevice] systemName]); //nslog (@ "systemversion:%@", [[Uidevice Currentdevice] systemversion]); //nslog (@ "model:%@", [[Uidevice Currentdevice] model]); //nslog (@ "Localizedmodel

Android dialing device and dialing device Design of android Phone Dialer Shows the running interface. Procedure: 1. Create an Android project. In Eclipse, choose "File"> "NEW"> "Android Project" 2. Compile the string. xml file. The Code is as follows:1 3. Compile the main. xml file. The Code is as follows:1 4. Click the event to process the button. The Code is as follows:1 package com. example. phone; 2 3

JS Determines whether a user's browsing device is a mobile device or a PC

Catalogue [-] First, the judgment equipment Second, determine the network connection status Third, the device does not show the solution First, the judgment equipment 01 //设备名称 02 return[UIDevice currentDevice].name; 03 04 //设备型号，只可得到是何设备，无法得到是第几代设备 05 return[UIDevice currentDev

Transferred from: http://blog.csdn.net/rockrockwu/article/details/7357648System boot process platform device, the driver registration is complete, why in the/dev directory is automatically created a good device node?The Automatically created device node in the/dev directory can be passed class_create () and then Device_create (). But in trackingKernel platform re

U-boot device tree form get Bootargs 1. Procedure Call procedure Do_bootm Bootm_start (CMDTP, Flag, ARGC, argv) bootm_load_os (Images.os, load_end, 1) BOOT_FN = Boot_ Os[images.os.os]; BOOT_FN (0, argc, argv, images); Do_bootm_linux boot_prep_linux create_fdt (bootm_headers_t *images) Ftd_chosen

Original blog member Wosiyin reflect, using WIN2008, right-click through my Computer to access Device Manager prompt: Because you run Device Manager on a remote computer, Device Manager runs in read-only mode. To uninstall a device or change device properties or drivers, you

Notes for compiling Linux network drivers 3.1 interrupt sharing In Linux, several devices run to share the same interrupt. If you need to share, specify the sharing method when applying. Definition of system-provided request_irq () call: Int request_irq (unsigned int IRQ,Void (* Handler) (int irq, void * dev_id, struct pt_regs * regs ),Unsigned long flags,Const char * devname,Void * dev_id ); If the sharing is interrupted, flags sets the sa_shirq attribute so that other devices can apply for t

The driver code is as follows: Scull. c #include Test code /************************************************************************* *fileName: test.c *description: test the myscull.c *author: Hzc *create time: 2007-04-20 *modify info: -*************************************************************************/#include Makefile KERNEL_DIR := /lib/modules/$(shell uname -r)/buildPWD:= $(shell pwd)obj-m := scull.odefault:$(MAKE) -C $(KERNEL_DIR) SUBDIRS=$(PWD) modulestest: test.cgcc $ Te

Every time I use a USB cable to plug in the computer interface will prompt "device can improve performance" small series always want to know the reason. Today, when I go to the forum, I understand, share to everyone is because your motherboard USB port is different has 1.1 of 2.0 of 3.0 because you plug in the USB port is relatively low so there will be a hint you can ignore him can also be inserted into the other mouth to try to plug in a better mo

How do I read the device number of a usb device? -- Linux general technology-Linux programming and kernel information. The following is a detailed description. I made a usb driver (based on the usb Kernel code of course) and wanted to use a usb device to test whether data can be transmitted. But the device Number of th

Reprinted please indicate the source:Http://blog.csdn.net/lihaoweiVLi haowei's csdn blog Why did you encounter wait for device when you use fastboot to brush the machine? I met. I have searched for countless methods on the Internet. I have told you that the driver is not correctly installed, ADB is not deleted, and I have tried none. If the driver is not correctly installed, I have also tried it on Linux, and there is no need to install the d

Character device driversAn application is a function called open Read write in a C library. In order to operate the hardware, the driver module is introduced.Build a simple drive that has a few steps.1. Create File_operations2. Request a device number3. Registering character device drivers,4. Drive entry5. Drive exitCheck that the data is coming in a way:1. Query