C# 对串口的操作

初始化 串口

                SerialPort sp = new SerialPort();
                sp.PortName = BasicParameters.IniReadValue(strPath, "Config", "Port");
                sp.BaudRate = 9600;
                sp.DataBits = 8;
                sp.Parity = Parity.None;

                sp.StopBits = StopBits.One;
                sp.DtrEnable = true; //启用控制终端就续信号
                sp.RtsEnable = true; //启用请求发送信号
                sp.ReadTimeout = 300;
                sp.WriteTimeout = -1;
                // sp.ReceivedBytesThreshold = 1;
                sp.Open();

向串口发送数据

 serialPort.Write("0026\r\n");

接收数据

int n = serialPort.BytesToRead;
byte[] buf = new byte[n];
serialPort.Read(buf, 0, n);
string receivedata = System.Text.Encoding.ASCII.GetString(buf);
if (receivedata.Contains("0026"))
{

}