基于STM32的mbedOS线程信号剖析  

MbedOS thread signal analysis based on STM32

作　　者：王浩波 王宜怀[1] 刘长勇 刘中华 WANG Hao-bo;WANG Yi-huai;LIU Chang-yong;LIU Zhong-hua(School of Computer Science and Technology,Soochow University,Suzhou 215006,China;Department of Mathematics and Computer Science,Wuyi University,Wuyishan 354300,China)

机构地区：[1]苏州大学计算机科学与技术学院,江苏苏州215006 [2]武夷学院数学与计算机学院,福建武夷山354300

出　　处：《计算机工程与设计》2022年第1期80-87,共8页Computer Engineering and Design

基　　金：国家自然科学基金项目(61672369);江苏高校优势学科建设工程基金项目(PAPD)。

摘　　要：针对RTOS的线程信号研究集中在调用算法或应用等方面,而对RTOS内部的线程信号响应机制、响应时间性能或运行流程的研究较少。对此,在分析RTOS的线程信号的作用、响应机制原理和关键技术要点的基础上,提出基于printf方式输出线程信号响应机制过程的剖析方法。以STM32L431芯片为例给出mbedOS的线程信号剖析实验例程,以时序图的方式进行归纳总结。该方法可以帮助读者从更加微观的角度理解mbedOS的线程信号响应的整个脉络结构,为剖析RTOS其它通信机制原理提供借鉴。At present,researches on thread signal of RTOS focus on invocation algorithm or application,while researches on thread signal response mechanism,response time performance or running process within RTOS is few.Therefore,on the basis of analyzing the function of RTOS thread signal,the principle of response mechanism and key technical points,a method of analyzing the process of output thread signal response mechanism based on printf was proposed.Taking STM32L431 chip as an example,the experimental routine of mbedOS thread signal analysis was given.It was summarized in the way of sequence diagram.It can not only help readers to understand the whole context structure of mbedOS thread signal response from a more microscopic perspective,but also provide reference value for analyzing other communication mechanism principles of RTOS.

关 键 词：实时操作系统RTOS 线程信号响应机制 STM32L431 mbedOS 同步与通信 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]