Unfortunately Microsoft has never paid much attention to the serial port. In the Windows API it is just regarded as a file, and in the first version (1.1) of the .NET framework (managed code) there was no support for serial communication. Fortunately

Complete source code for Circular Buffer Implementation

实现DSP脱离烧录器烧录代码的功能，可以多台并机升级DSP软件。-We can realize the function of DSP buffer burn unit code, can be more than one weaver upgrade DSP software.