ptp clock

Tags: 28335 clock Listen 335 clock On the 335, there is an on-chip clock Module Based on the PLL circuit. 1 shows that there are two ways to provide clock for the CPU and peripherals: One is to use an external clock source, connect it to the X1 pin or the xclkin pin, X

IntroducedMany programs in a computer rely on precise time to work properly, such as how a script executes at a specified time.The computer has two clocks, one is always running, a battery (CMOS)-powered hardware clock, and the other is a system clock (also known as a software clock) maintained by the operating system running on your computer. At startup, the ker

In the Linux operating system, many activities are related to time, such as process scheduling and network processing, and so on. Therefore, understanding the clock processing mechanism in the Linux operating system helps to better understand how the Linux operating system works. This paper analyzes the clock processing mechanism of Linux 2.6.25 kernel, first introduces some hardware timers in computer syst

Clock in the game development, sometimes we need a clock to record the game time, if the end of time to end the game. This article describes how to use timer and timertask to implement such a clock in J2ME and give specific code examples. There is a TimerTask class in the Java.util package that you can extend this class and implement his run () method to write ou

Introduction List several registers to use first: LOCKCON0 LOCKCON1 oscset mpllcon epllcon epllcon_k These 6 registers control 2 internal PLL phase-locked loops, an external crystal oscillator. The output values of these two independent PLL phase-locked loops are determined by the setting values of Mpllcon and Epllcon , respectively. The stable output time of the PLL is determined by LOCKCON0 and LOCKCON1 . The stability time of the crystal oscillator is determined by Oscset . Normally, the PL

If CFS is a very creative mechanism in Linux, another idea in Linux is nohz. I have already written several articles about nohz, therefore, this article will no longer elaborate on code details. The idea of Linux lies in design rather than code. The main problem that the code solves is practicality. Just like GCC, It is a compiler, the application compilation principle is designed internally, but it enriches the ingenuity beyond the compilation principle. If the Linux kernel before nohz is a ske

This example describes the jquery super cool flat-line clock effect code. Share to everyone for your reference. Specifically as follows:jquery's cool flat-style clock effect, the date and time through the horizontal scale bar, the test results are very cool, is a good example of learning.Here we also mention the previous implementation of another particularly novel time display style:JS to achieve a thermom

Do you often forget to clock out, to be deducted the money yo, download this script, add a timed task under Windows, to remind you must go to clock. I often forget to clock out, so I wrote this script to remind me, in the planning task set a good time to run the scripts. @echo off echo ******************************************** echo * don't forge

grammars) Http://docs.jboss.org/drools/release/6.0.1.Final/drools-docs/html_single/index.html (English, 6.0.1 Official guide, covering all aspects of drools, suitable for advanced learning) http://blog.csdn.net/quzishen/article/details/6163012 (Chinese, 5.x version, which can be used to control, and the explanation of DRL rules file is available for learning) Here is an example of a clock based on Drools 6.0 that I have written. Java code: Src/main/j

There are four clock sources in 9200: Slow clock (SLK) Main clock) PLLA, pllb There is a difference between the master clock and the host clock. The main clock refers to the clock of t

JAVA programming (07.3) ----- clock facing object design 1. Three input methods (heavy load) for designing clocks for objects) Package com. lovo; import java. text. decimalFormat; import java. util. calendar;/*** clock class ** @ author Abe ** // *** attribute, hour, minute, seconds ** @ author Abe **/public class Clock {private int hour; private int min; privat

nearly hundred VC class of various products jump demand (blind) new (engage), to understand massive Viewcontroller Pain and Page jump logic cyclomatic complexity is unbearable.Comparison of the result of the UI animation of The Imitation writing　　Original link: http://www.henishuo.com/clock-animation/ Engineering operations provided by the standard Cobovin The author's project operation 　　From the

The main reference is the 8th chapter of Am335x's TRM PRCM module and the 13-chapter LCD Controller. Here in the LCD controller inside the configuration described in more detail, the frequency division and pixel, the setting of the extinction value and so on. Not to repeat, many people will complain that the LCD_PCLK configuration can only be LCD_CLK through a crossover, so for frequency 70~90mhz configuration is difficult. But in fact, our set of LCD_CLK is more flexible, refer to the following

Computer systems have a series of "Cycle" concepts. It is important to understand these concepts in a different and connected manner. The followingClock cycle, oscillating cycle, machine cycle, CPU cycle, status cycle, command cycle, bus cycle, task cycleFor a brief introduction. Cycle In electronic technology, the pulse signal is a pulse signal continuously sent at a certain voltage range and at a certain interval. The interval between pulses is called a cycle, and the number of pulses generate

Summary: This paper mainly analyses the clock interrupt of Linux 2.4.0 kernel and the representation of kernel time from the point of kernel implementation. This article is written for readers and Linux driver developers who want to understand the Linux I/O subsystem. Key words: Linux, clock, timer Disclaimer: This document is published in the Spirit of free software open source code, and anyone can obta

In stm32, there are five clock sources:HSI,HSE,LSI,LSE,PLL. ①HSIIt is a high-speed internal clock, RC oscillator, and the frequency is 8 MHz. ②HSEIt is a high-speed external clock, which can be connected to a Z/Ceramic Resonator or an external clock source. The frequency range is 4 MHz ~ 16 MHz. ③LSIIt is a low-s

A small alarm clock for scheduled tasks based on windows Recently, my work is busy, and my girlfriend is inevitably neglected. So I wrote a small program to remind her to go to bed. I used bat to write the original function. The Code is as follows: @ Echo offTitle % date % time :~, 8%Mshta vbscript: msgbox ("Yang huaqiu! Sleeping! ", 36," said the broken master: ") (window. close)Mshta vbscript: msgbox ("Yang huaqiu! Take medicine! ", 36," said the

project files of Keil and a CFG folder, which contains some configuration code. This score is based on your preferences. Refreshing a lot .. Haha .. Si is used to store the source insight project file.2. Configure the system clock.When we get a new single-chip microcomputer, I/O port control is often the first requirement, that is, the flow lamp. But there is another key thing that needs to be clearly identified at the very beginning is the various clock