串口速度测试工具

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO.Ports;                 // For SerialPort
using System.Threading;
using System.IO;
using System.Diagnostics;



namespace _433CMD
{

    class Program
    {
        const int COUNTER = 3;
        static void Main(string[] args)
        {
            Stopwatch stopwatch = new Stopwatch();

            if (args.Count() != 2)
            {
                Console.WriteLine("Please input COM PORT Number and ON or OFF");
                Console.WriteLine("Usage:");
                Console.WriteLine("SST COM3 115200");
                Environment.Exit(1);
            }

            if (args[0].IndexOf("COM") == -1)
            {
                Console.WriteLine("Parameters error");
                Environment.Exit(2);
            }

            int BaudRate;

            if (int.TryParse(args[1], out BaudRate))
            {
                Console.WriteLine(BaudRate);
            }
            else
            {
                Console.WriteLine("BaudRate wrong");
            }

            SerialPort serialPort1 = new SerialPort();
            serialPort1.PortName = args[0];

            serialPort1.BaudRate = BaudRate;
            serialPort1.DataBits = 8;
            serialPort1.Parity = 0;
            serialPort1.StopBits = (StopBits)1;
            serialPort1.Encoding = System.Text.Encoding.GetEncoding(28591);
            serialPort1.DtrEnable = true;
            serialPort1.RtsEnable = true;
            // Buffer 长1秒
            Byte[]  Buffer = new Byte[BaudRate/10];

            stopwatch.Start();
            try
            {
                // 打开串口
                serialPort1.Open();
                for (int i=0;i< COUNTER;i++)
                {
                    serialPort1.Write(Buffer,  0, Buffer.Length);
                }
                
                serialPort1.Close(); 
            }
            catch (IOException e)
            {
                Console.WriteLine("Open " + args[1] + " failed ");
                Console.WriteLine(e.Message);
                Environment.Exit(4);
            }
            stopwatch.Stop();
            TimeSpan ts = stopwatch.Elapsed;
            Console.WriteLine("Send " + (Buffer.Length  *COUNTER /1024).ToString() + "KB in " +(ts.TotalMilliseconds/1000).ToString("F3")+"s");
            Console.WriteLine("Serial speed: "+(Buffer.Length * COUNTER/1024 / (ts.TotalMilliseconds/1000)).ToString("F3") +"KBytes/s");
            Console.ReadLine();
        }
        
    }
}