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0x21000000;Example: direct control of the buzzer in uboot mm 0xe02000a0 0x1 (Control Register) mm 0XE02000A4 0x1 (data register)Common debugging means: 1.led lighting Dafa 2. Serial debugging, Uart_getchar,uart_putchar, further realize stdio.hClock initialization settingsPLL phase-locked loop, frequency multiplierSerial Port Working principleCore diagram of serial port work#define ULCON0 * ((volatile unsigned int *) 0xe2900000)The volatile keyword, w

Problem:The directory in which vim automatically sets the currently edited file does not conflict with the current working path, but when Vim creates a new file, the working path automatically switches the cache path.How to make a file available when using Vim, VIM's working path is the path to which the current file resides. And when creating a new file from Vim

202.100.1.2:3478 3. Nat Mode considerations: NAT Mode is modified by the DST IP, go directly to switch or pub do not need to modify the Mac so, do not need VIP and Realserver in a network segment. The NAT mode for both the package and package out requires LVS, so LVS may become a system bottleneck. LVS full NAT mode the fundamentals of full natt: Full NAT not only replaces the package's DST IP when the client requests the VIP, but also replaces the SRC IP of the package, but also replaces th

After a trial, QT initiates a new process, the working directory of the process is inherited from the parent process, either through start or startdetached.In fact, for the Linux system, the QT bottom should also call fork, exec and other functions, for fork, see Apue Chinese version of the third version, the following analysis:There are two common scenarios for processing file descriptors after F o r K:(1) The parent process waits for the child proce

Memory-Working set: the sum of the amount of memory in a private working set and the amount of memory that the process is using and can be shared by other processes. Memory-Peak Working set: The maximum number of working set memory used by the process. Memory-Working S

The working principle and type differences of vswitches, and the working principle of vswitchesThe emergence of many new Client/Server applications and multimedia technologies has led to the fact that traditional shared networks are far from meeting the requirements, which has promoted the emergence of LAN switches. 1. vswitch Definition A lan switch has many ports, each of which has its own dedicated bandw

Php cookie working principles and instance details, cookie Working Principles Cookies are commonly used in php, but many friends may not know how cookies work. The following small series will help you sort out php cookies. Working Principle and some examples of cookie read/write operations. Cookie and session Status For BS development, these two concepts are esse

1. Recent work analysis and arrangement of the Product and development team, using scrum.Work with products: List by Product backlogRecent work schedule for the development team: listed by the Sprint backlog, personally claimed, and estimated (priority, workload, time required)2. Daily work arrangements for individualsUsing tomato working method to arrange, tomato working method has 5 modes: overview, Focus

Web program working principle detailed, web working principle How 1.WEB programs work (1) Meaning of the word Web Network: "Computer" computer networks, net Web: "Computer" World Wide Web (worldwideweb), Internet (Internet) Web programs, as the name implies, are programs that work on the web. (2) Operating principle of stand-alone program A single machine, a computer that is not connected to another comput

Detailed explanation of AJAX working principles and advantages and disadvantages, and the advantages and disadvantages of ajax Working Principles AJAX is a technology used to create fast dynamic web pages. By performing a small amount of data exchange with the server in the background, AJAX can implement asynchronous updates on webpages. This means that you can update a part of a webpage without reloading t

Working principle of database connection pool and the generation of this technology, working principle of Database Connection Why does this technology exist? Database connection is a very precious and limited resource, especially on the network of multiple users. The management of databases directly affects the performance of the entire system. 1. Creating a database connection is a very time-consuming o

Concept and working principle of WebService (I). Working Principle of webservice Today, let's learn about WebService. What is it? Web service is a platform-independent, low-coupling, self-contained, programmable web-based application that can use open XML (a subset of standard General Markup Language) standards are used to describe, publish, discover, coordinate, and configure these applications for Distrib

Error message:The working copy needs to be upgradedSvn:the working copy at ' F:\JAVA project\paw-vrveis-jj-2.0\webcontent\web-inf\pages\applicationaddressaction 'is too old (format ten) to work with Client version ' 1.8.14 (r1692801) ' (expects format 31). You need to upgrade the working copy first.The reason I'm having this problem is that I'm using one of the o

C ++ implements a multi-thread synchronization mode of collaborative working program example, working program example Multi-threaded concurrent programs and collaborative programs are actually different concepts. Multi-thread concurrency means that multiple execution sequences run at the same time, while the collaborative program is that multiple execution sequences collaborate with each other, and there is

Rsync working mechanism (translation), rsync working mechanism Translation This article is an official rsync recommendation article on How Rsync Works translation. The main content is Rsync terminology and a simple version of rsync Working principles. This article does not translate all of the articles. The preface is skipped directly, but the original content of

I. CSS working principle. CSS Working Principle CSS is the full name of the stacked style sheet. It is a computer language used to represent HTML (an application of the standard universal Markup Language), XML (a subset of the standard universal Markup Language), and other file styles. It is a style design language that truly achieves the separation of webpage performance and content. It can precisely con

What is the working principle of HTTP? How to optimize the HTTP protocol ?, Protocol Working Principle Optimization made by http1.0 Bandwidth: latency has been solved at this stage: 1. browser blocking: the browser can only connect to the same domain name with four connections at the same time. latency: 2. DNS query: The Browser needs to know the IP address of the target server to establish a connection del

12.16 ~ 12.23 working log, 12.1612.23 working log 2016.12.161. Added touchmove and other events to the function called by the cick event will cause event penetration, details (http://www.tuicool.com/articles/6NfaUnM) The click event of a mobile device has a latency of MS, which is used to determine whether to double-click 2. the ios device will have a default css style. For example, the input button is squ

Spring internal working mechanism (I): spring Internal Working Mechanism Spring has many internal mechanisms, so I plan to write them in several more stages. This chapter only explores what Spring container startup has done; Preface: It is said that Spring containers are like a well-constructed machine. This is true. We use the configuration file to send control information to the machine so that the machin

' BookService.Models.Author ' contains cycles and cannot being serialized if reference tracking is Disabled.exceptionmessage> exceptiontype>System.Runtime.Serialization.SerializationExceptionexceptiontype> StackTrace>...StackTrace> innerexception>Error>One solution is to use a dto, and I'll describe it in the next section.You can configure the JSON or XML formatter to handle graph loops. For a lot of other information, see Handling Circular Object References. (Http://www.asp.net/web-api/