无线电工程

嵌入式通信信号源采用MCU控制DDS芯片的结构,产生FSK、LFM(线性调频)和MSK等多种信号模式。运行实时操作系统μCos-II,将应用程序按功能划分为几个核心任务,由实时内核进行调度,实现了多任务的并行执行,提高了嵌入式系统开发的效率、实时性和可靠性。通过以实时嵌入式操作系统μCos-II为软件平台的嵌入式通信信号源的系统设计,介绍了μCos-II的系统开销、移植和配置、多任务编程以及任务间同步、通信的实现方法。

The embedded communication signal source introduces a structure of DDS controlled by MCU,and can produce various signal modes such as FSK,LFM and MSK etc.By running the real-time operating system μCos-II,the application program is divided into several central tasks in terms of functions,and scheduled by the real-time kernel,so the efficiency and reliability are improved.Through the system design of the embedded communication signal source based on μCos-II,this paper introduces the system overhead,transplantation and configuration of μCos-II,as well as the realization of multi-task program and the synchronization and communication between tasks.