I have been in ubuntu10.04 download and installation of arm-elf-tools-20030314.sh (or arm-elf-tools-20040427.sh) during the problem many times, there is no detailed solution on the Internet, it is listed in this hope to provide you with some
Sdtv standard-Definition TV standard clear TV
Edtv enhenced-Definition TV enhanced clear TV
HDTV high-definition TV
Sdtv includes 480i 576i
Edtv contains 480 P 576 P
HDTV 720 p 1080i 1080 p
480 I: I indicates interlaced, 480 indicates that
Main
1 Description
Wpa_supplicantbinFile main function, accordingWpa_supplicantCall with ParametersWpa_supplicant_initFunction initialization.-NParameter.Wpa_supplicant_add_ifaceAdd multiple interfaces to the function, and then callWpa_supplicant_
# Include can contain declarations of variables and functions in other header files. Why do I need the extern keyword? If I want to reference a global variable or function, I only need to include # include (XXX. h contains the statement of a.) Is
I. Win Platform
1. Win platform software requirements
A. SERVER: Installation
Visualsvn server software
B. Client: Installation
Tortoisesvn Software
This is relatively simple and can be used after installation.
Ii. Linux platform
Server: appach +
[Abstract] The time for job hunting is approaching, and the English language is almost a year old. It's better to practice your spoken language. Otherwise, I don't know how to open my mouth.
I started watching F6 for a long time. I started to get
Author: longfeey
When using U-boot, there is a problem with MAC Address Settings. If two development boards with the same MAC address are in the same LAN, they will affect each other.Because the MAC addresses of each machine are different
From: http://blog.csdn.net/z08053520/article/details/5390604
1. The cdev structure is used to describe a character device in the linux2.6 kernel. Its definition is as follows:Struct cdev {Struct kobject kobj;Struct module * owner; // ModuleConst
Work needs, transplanted several 3G, in fact, 3G itself; porting is not difficult, the underlying is nothing more than virtual USB serial port (2.6 Later generally use high speed or full speed ).
As a hardware vendor, the upper layer mainly depends
In Linux 2.6 and later versions, the configuration file is changed from the original config. In to kconfig. The kconfig syntax is described in detail in/documentation/kbuild/kconfig-language.txt. here, the Chinese version of kconfig-language.txt is
Ubifs disk structureThe ubifs file system divides ubi volume into six parts:1. superblock area, use leb02. Master area, using leb1 and leb23. log area, starting from leb3, the size of the log area4. LPT area, after the log area, the LPT size is
This article is a continuation of the irregular lwn series on writing videodrivers for Linux.Introductory article describes theseries and contains pointers to the previous articles. InThe last episode, we looked at how the video4linux2 API describes
Because there is an arm testing tool dependent on LibPNG, it is necessary to cross-compile LibPNG, while libpng depends on zlib.
1. Compile zlib first
./Configure -- prefix
Start. in the reset of S, after copying the second part of uboot from NAND or SD card to external Ram, you can allocate the stack for executing C code and then call lib_arm/board. start_armboot in C starts the C code of uboot.
Start_armboot
RTC-real time clock maintains the system's hardware time. When Linux is started, you need to use the RTC hardware clock to set the system time.
This process is implemented in the drivers/RTC/hctosys. c driver. This driver actually only has one init
Buttons. c
# Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include # Include Static int major = 0;Static struct class * CLS;/* Gpecon 0x56000040 *//* Gpfcon 0x56000050 *//*
V4l2 API defines several data transmission modes to read and write data from the video device. The driver must support one of them to exchange data with the application.
The classic I/O method is the read () and write () methods that can be used
A watch timer (wdt) is a hardware circuit that can be used to reset a computer system when system software errors occur.
Generally, the daemon of a user space uses a specific device/dev/watchdog to notify the watchdog Driver System of the kernel to
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