C#之串口

1.字符发送

   string strSend = "00 01 02 03";
   serialPort1.Write(strSend);

2.字符接收

 ReadDataFromSerial Rdfs_str = new ReadDataFromSerial(DataShowMthod);
 Serialdata = serialPort1.ReadExisting();
 Invoke(Rdfs_str);

 this.txtDataReceive.Text +=Serialdata;

3.ASCII发送

   string strSend = "00 01 02 03";
   string str = strSend.Replace(" ","");
   int len = str.Length / ;
   byte[] ret = new byte[len];
   for(int i=;i<len;i++)
         ret[i]=(byte)(Convert.ToInt32(str.Substring(i*,),));
   serialPort1.Write(ret,,ret.Length);

4.ASCII接收

方法1：

 ReadDataFromSerial Rdfs_hex = new ReadDataFromSerial(DataShowMethod);
 Serialdata = serialPort1.ReadExisting();
 Invoke(Rdfs_hex);

 string str="";
 byte[] bt = System.Text.Encoding.Default.GetBytes(Serialdata);
 for (int i = ; i < bt.Length; i++)
     str += bt[i].ToString("X2");
 this.txtDataReceive.Text += str;

方法2：

 byte[] bt=new byte[SP.BytesToRead];
 SP.Read(bt,,bt.Length);
 for(int i=;i<bt.Length;i++)
     Str += bt[i].ToString("X2");