at t device access code

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)o

applications provide the most satisfactory service results based on the user's culture and language habits. By promptly adjusting the currency type, decimal point separator, time and date format, the application can bring users more intelligent work than expected, and all of this is a humanistic factor that must be considered by successful software. In addition, NSLocale can also be used for the geographical location of users. When users contact developers for help, the location is also one of

Second. C code #include makefile KERNEL_DIR := /lib/modules/$(shell uname -r)/buildPWD:= $(shell pwd)obj-m := second.odefault:$(MAKE) -C $(KERNEL_DIR) SUBDIRS=$(PWD) modulestest: test.cgcc $ Test code /* ===================================================== ================================== A test program to access/dev/ second this example is to help underst

applications provide the most satisfactory service results based on the user's culture and language habits. By promptly adjusting the currency type, decimal point separator, time and date format, the application can bring users more intelligent work than expected, and all of this is a humanistic factor that must be considered by successful software. In addition, nslocale can also be used for the geographical location of users. When users contact developers for help, the location is also one of

Since the introduction of PCI bus, its unique characteristics have been favored by many vendors, which has become the mainstream of computer extension bus. At present, many domestic technical personnel have the ability to develop PCI bus interface equipment. However, the PCI bus programming technology, that is, the operation of the PCI bus device technology, has been a technical staff to feel the headache of things. The core technology of PCI bus prog

-device equipment is mainly as a sensor node, the collected data information, as well as the usual control information (such as maintaining a connected heartbeat packet, command control packets, etc.) sent to the Router/coordinator device. The following address: node/end node/sensor node, all refer to end-device; routing/relaying, all refer to Router; Coordinator

two access methods on x86? First, the configuration mechanism #1 can only access registers between [0-255] offsets, that is, registers in the standard PCI configuration space. Registers that expand the PCI configuration space [256-4095] can only be accessed using memory ing. Second, configuration mechanism #1 is generally used to enumerate the PCI device phas

Let's start with a well-written kernel driver module to experience the following character device driversYou can temporarily ignore the following code implementation!Memdev.c#include 1. Compile/install drivers: in Linux systems, drivers are usually encoded using the kernel module's program structure, so compiling and installing a driver is essentially compiling/installing a kernel module.2. Create a

This period of time is to do PC-side business, the result manager found me, may want to do mobile applications, background logic or I write the logic, but need to change some, to see how to deal with.Because the mobile and PC side is slightly different, I think it is best to be in a unified judgment, and do not change the original code, this can reduce the number of bugs to a certain extent. my idea is to first determine whether the current request is

Fiber access network devices are still commonly used. So I have studied the functions of the next-generation Metro optical access network devices. I would like to share these functions with you here. I hope they will be useful to you. The ADM622 product series provides carrier-level devices with low costs and flexible services. The PM5337ADM622 and PM5338 ADM 622 PDH Optical Fiber

Introduction of wireless Device access control Wireless (Wi-Fi) networks already have strong wireless security encryption, password cracking is less likely. But the universal key, such as free Wi-Fi password leakage, resulting in wireless network may be self-defeating, thus "be rubbed net." The Wireless Device access