program delay

  The delay program is widely used in SCM programming, but some readers do not know how to program the time delay programs in the study, and do not know the machine The difference between the period and the instruction period, do not know the

PDF download: http://files.cnblogs.com/linjie-swust/FPGA%E4%B8%ADIO%E6%97%B6%E5%BA%8F%E7%BA%A6%E6%9D%9F%E5%88%86%E6%9E%90.pdf1.1 Overview In high-speed systems, FPGA timing constraints include not only internal clock constraints, but also complete

Transferred from: http://blog.sina.com.cn/s/blog_980e19e00101b5dh.htmlSometimes precise delay is required, such as the 18B20 temperature sensor is very strict in timing requirements and must be accurate to the microsecond levelFirst, with the NOP

When writing application-level programs, sometimes you need to delay, what should I do?In the kernel code, we often see such a header file using # include , and thought of calling this directly is OK! But at the time of compiling, we found thatThe

There are no empty statements in the standard C language. But in the MCU programming of C language, it is often necessary to use a few empty instructions to produce short delay effect. This is easy to achieve in assembly language, write a few nop on

The second way to address the CPU usage of the delay function in the previous section (up to 50%) is to use the message mechanism to wait for messages or timeouts through API functions MsgWaitForMultipleObjects, thus avoiding the use of cyclic

The delay queue, as the name implies, is a message queue with deferred functionality. So, what is the scenario in which I need such a queue?BackgroundLet's look at the following business scenarios first: How to close the order in time and

Branch delay slot in MIPS I bought the Chinese version of the "see MIPS run Linux". The translated sentence is useless. The first chapter won't be able to read any more, and the more critical the location is. Http://hi.baidu.com/comcat/blog/item/c6f4

Precise delay of c51Some friends suggested that the accuracy of 51 Single-Chip Microcomputer delay program using C language is not enough. In fact, the C language is eventually compiled into an assembly language for running, so the assembly program

(Crystal oscillator 12MHz, a machine cycle of 1us.) A. 500MS Delay sub-Program Program: void delay500ms (void) { unsigned char i,j,k; for (i=15;i>0;i--) for (j=202;j>0;j--) for (k=81;k>0;k--); } Produced by the Assembly: c:0x0800 7f0f MOV R7,