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俺是农民俺怕谁？？？

文章 1274
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阅读 4842428
评论 674
赞 8194

原创搜集到有关SerialPort控件的代码片段

 2008-10-30 19:26  4422 2 2 分类: 软件与OS

// This is a new namespace in .NET 2.0

// that contains the SerialPort class
using System.IO.Ports;

private static void SendSampleData()
{
// Instantiate the communications

// port with some basic settings
SerialPort port = new SerialPort(

"COM1", 9600, Parity.None, 8, StopBits.One);

// Open the port for communications
port.Open();

// Write a string
port.Write("Hello World");

// Write a set of bytes
port.Write(new byte[] {0x0A, 0xE2, 0xFF}, 0, 3);

// Close the port
port.Close();
}

#region Namespace Inclusions
using System;
using System.IO.Ports;
using System.Windows.Forms;
#endregion

namespace SerialPortExample
{
class SerialPortProgram
{
// Create the serial port with basic settings
private SerialPort port = new SerialPort("COM1",
9600, Parity.None, 8, StopBits.One);

[STAThread]
static void Main(string[] args)
{
// Instatiate this class
new SerialPortProgram();
}

private SerialPortProgram()
{
Console.WriteLine("Incoming Data:");

// Attach a method to be called when there

// is data waiting in the port's buffer
port.DataReceived += new

SerialDataReceivedEventHandler(port_DataReceived);

// Begin communications
port.Open();

// Enter an application loop to keep this thread alive
Application.Run();
}

private void port_DataReceived(object sender,

SerialDataReceivedEventArgs e)
{
// Show all the incoming data in the port's buffer
Console.WriteLine(port.ReadExisting());
}
}
}

using System.IO;

private static void SendTextFile(

SerialPort port, string FileName)
{ port.Write(File.OpenText(FileName).ReadToEnd()); }

private static void SendBinaryFile(

SerialPort port, string FileName)
{
using (FileStream fs = File.OpenRead(FileName))
port.Write((new BinaryReader(fs)).ReadBytes(

(int)fs.Length), 0, (int)fs.Length);
}

DB9 Male (Pin Side)                   DB9 Female (Pin Side)
DB9 Female (Solder Side)              DB9 Male (Solder Side)
    -------------                          -------------
    \ 1 2 3 4 5 /                          \ 5 4 3 2 1 /
     \ 6 7 8 9 /                            \ 9 8 7 6 /
      ---------                              ---------

DB9 Female to DB9 Female Null-Modem Wiring
2 | 3 | 7 | 8 | 6&1| 5 | 4
---- ---- ---- ---- ---- ---- ----
3 | 2 | 8 | 7 | 4 | 5 | 6&1

9-pin   25-pin Assignment                 From PC
------ ------ ------------------------- ------------
Sheild 1       Case Ground                Gnd
1       8       DCD (Data Carrier Detect) Input
2       3       RX (Receive Data)         Input
3       2       TX (Transmit Data)        Output
4       20      DTR (Data Terminal Ready) Output
5       7       GND (Signal Ground)        Gnd
6       6       DSR (Data Set Ready)       Input
7       4       RTS (Request To Send)      Output
8       5       CTS (Clear To Send)        Input
9       22      RI (Ring Indicator)       Input

using System;

using System.IO.Ports;

using System.Collections.Generic;

namespace SerialComBuffering

{

  class Program

  {

    SerialPort com = new SerialPort(SerialPort.GetPortNames()[0], 

      9600, Parity.None, 8, StopBits.One);

    List<byte> bBuffer = new List<byte>();

    string sBuffer = String.Empty;

    static void Main(string[] args)

    { new Program(); }

    Program()

    {

      com.DataReceived += 

        new SerialDataReceivedEventHandler(com_DataReceived);

      com.Open();

      Console.WriteLine("Waiting for incoming data...");

      Console.ReadKey();

    }

    void com_DataReceived(object sender, 

      SerialDataReceivedEventArgs e)

    {

      // Use either the binary OR the string technique (but not both)

      // Buffer and process binary data

      while (com.BytesToRead > 0) 

        bBuffer.Add((byte)com.ReadByte());

      ProcessBuffer(bBuffer);

      // Buffer string data

      sBuffer += com.ReadExisting();

      ProcessBuffer(sBuffer);

    }

    private void ProcessBuffer(string sBuffer)

    {

      // Look in the string for useful information

      // then remove the useful data from the buffer

    }

    private void ProcessBuffer(List<byte> bBuffer)

    {

      // Look in the byte array for useful information

      // then remove the useful data from the buffer

    }

  }

}

private List<byte> PortBuffer = new List<byte>();

private void port_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
SerialPort port = (SerialPort)sender;

byte[] data = new byte[port.BytesToRead];

port.Read(data, 0, data.Length);

PortBuffer.AddRange(data);

ProcessIncomingData(PortBuffer);
}

private void ProcessIncomingData(List<byte> PortBuffer)
{
// Search through the bytes to find the data you want
// then remove the data from the list. It is good to
// clean up unused bytes (usually everything before
// what you're looking for)
}

void serialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
int intBytes = serialPort.BytesToRead;
byte[] bytes = new byte[intBytes];
serialPort.Read(bytes, 0, intBytes);

tbReceive.Text += intBytes.ToString() + ";";
}

int intBytes;
void serialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
intBytes = serialPort.BytesToRead;
byte[] bytes = new byte[intBytes];
serialPort.Read(bytes, 0, intBytes);

this.Invoke(new EventHandler(SetText));

}
void SetText()
{
tbReceive.Text += intBytes.ToString() + ";";
}

if (com.IsOpen) com.Close();
com.Open();

// send char 34,14,192,51,0,0
com.Write(new string(new char[] { (char)34, (char)14, (char)192, (char)51, (char)0, (char)0 }, 0, 6));

// for testing purposes I connected TX and RX pins of the port...

// receive routine:
private void com_DataReceived(object sender, SerialDataReceivedEventArgs e)
{

// This method will be called when there is data waiting in the port's buffer

// Obtain the number of bytes waiting in the port's buffer
bytes = com.BytesToRead;

// Create a byte array buffer to hold the incoming data
buffer = new char[bytes];

// Read the data from the port and store it in our buffer
com.Read(buffer, 0, bytes);

}

private void port_DataReceived(Object sender, System.IO.Ports.SerialDataReceivedEventArgs e)

{

Thread.Sleep(250);

int total = sp.BytesToRead

buffer_rx = new char[total];

sp.Read(buffer_rx, 0, total);

for (int i = 0; i < buffer_rx.Length; i++)

{

sB.Append(buffer_rx Idea .ToString());

}

MessageBox.Show(sB.ToString());

sB.Remove(0, sB.Length); //sB is a StringBuilder

}

private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)

{

int total = serialPort1.BytesToRead;// here always read 8 just bytes and bufer_rx is a20 bytes

serialPort1.Read(bufer_rx, 0, total);