clock with nanoseconds

1. Enter the CCS environment, load the existing project, load the generated. Out file, and find the code to view the code execution cycle. 1.Figure 1 1. Select enable clock in profiler of the CCS menu ,.Figure 2 2. select the clock setup sub-menu under the profiler menu, and enter your DSP clock cycle in instruction cycle. The unit is

Tags: assignment suspend use ROC equals create principle Register oneFirst, prefaceClock is the basis of a timer, and any timer needs to work on a given clock. The kernel maintains a number of clock, the second chapter of this article describes the basic concept of clock and some statically defined POSIX clock. Accordi

Label: Use for time ad on to design the SP Program Two major functions of systick: 1. Precise latency can be generated; 2. A single HEARTBEAT (clock) cycle can be provided to the operating system; Generally, the method to implement the delay (n) function is as follows: For (I = 0; I ; For the stm32 system microprocessor, it takes only a few dozen NS (nanoseconds) to execute a command and enter the f

// Nanosecond __ int64 count (void) { _ ASM _ emit 0x0f _ ASM _ emit 0x31 } cwinapp theapp; using namespace STD; int _ tmain (INT argc, tchar * argv [], tchar * envp []) { int nretcode = 0; // an error is displayed when the MFC

I. Clock 1. Three different clock sources can be used to drive the system clock (sysclk ): . HSI oscillator clock high speed internal . HSE oscillator clock high speed external . PLL Clock Phase Locked Loop 2. These devices have t

This article describes how to obtain ns in a linux user space in a matter of seconds. For more information, see I. INTRODUCTIONWhen testing program performance, we often need to obtain precise ns-level time to measure the performance of a program.

Random is pseudo-random, that is, when the seed is determined, the sequence of stochastic numbers is determined.So the seed is the key of the random number, if the constructor does not pass the seed, the secret exists in the value of nanotime, guess

Original Address http://www.dzsc.com/data/html/2011-1-17/88338.html1 IntroductionIn distributed systems, a global time is often needed to determine the sequence of events in the system, to coordinate the transmission of various messages, and to control and monitor the state of the system. It is necessary to unify the local time of each part in the system and clock synchronization. With the widespread application of distributed simulation system and te

07:10 in the evening .. "Mr. Tao, this chapter is not called a Linux Device Driver.ProgramThe interruption and clock have been mentioned in front of you, and many templates have been provided to me. I have understood it. Are you going to start talking about the clock this time .." "It's really smart. I like you more and more about it. That's good. Today we are about to start a new module-kernel

In the previous section of the discussion, we have been based on the assumption that the clock events in Linux are provided by a cycle clock, regardless of whether the clock_event_device in the system is working in a cycle-triggered mode or in a single-trigger mode, regardless of whether the timer system is operating in a low-resolution mode, or high-precision mode, the kernel does its best to provide cycle

1. Clock resource Overview The clock facility provides a series of low-capacitance, low-jitter Interconnect Lines that are ideal for transmitting high-frequency signals and minimizing clock jitter. These connection resources can be connected to DCM, PLL, and so on. Each Spartan-6 Chip provides 16 high-speed, low-jitter global

1. Clock source Three different clock sources can do the system clock (SYSCLK):HSI oscillator Clock: high-speed internal clockHSE oscillator Clock: high-speed external clockPLL ClockTwo x two-level clocksLSI (Low speed internal