Windows环境下多串口控制软件设计中精确定时的实现

在模拟飞控软件设计中,需要通过实现串口通信的精确定时来测试系统的实时性能。本文分析对比了Windows环境下VC++软件多种定时器的性能,并在模拟飞行控制软件中进行了测试比较。测试结果表明:在Windows环境下采用软件定时器,其性能难以满足高精度定时需求。为此,本文提出了一种硬件同步与软件定时相结合的精确定时方式,可将串口通信的定时精度提高到微秒量级。

Accurate Timing in the Software Design of Multi-Serial Port Communication under Windows Environment

In the design of flight control system simulation software,accurate timing is necessary for serial port communication to test the system's real-time performance.The performance of several software timers for VC++ under Windows environment is analyzed and compared in this paper.The test results show that the performance of software timers under Windows environment will not meet the requirements of high precision timing.To resolve this problem,a precise timing approach that combines hard-ware synchronization ...