西夏普的部落格

1.前言:
利用VSPE可以模擬RS232串口的特性，用來創建虛擬端口，以程式來測試各端口之間通信的狀態。

2.說明:
不論是PC或是NoteBook，實體的RS232接口幾乎要消失，為了要做RS232的測試，模擬的軟體可創造出虛擬的串口，再用程式測試各接口之間的信號傳遞。

VSPE串口模擬器最新版本可在下列網址下載:
http://www.eterlogic.com/Products.VSPE.html

開啟VSPE，選擇Device-->Create-->Device Type(選Pair)，下一步選擇Virtual serial port分別為COM10和COM11
點選Emulation-->Start
開啟C#專案，工具箱裡拖拉出兩個SerialPort控制項，分別命名PortName為COM10與COM11

程式碼:

private void Form1_Load(object sender, EventArgs e)
{
	serialPort10.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived1);
	serialPort11.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived2);

	serialPort10.Open();
	serialPort11.Open();
	serialPort10.Write("COM10-->COM11: Hello, what's your name?");
	serialPort11.Write("COM11-->COM10: I am Zoper!");
}

private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
	serialPort10.Close();
	serialPort11.Close();
}

private void port_DataReceived1(object sender, SerialDataReceivedEventArgs e)
{
	string response = serialPort10.ReadExisting();
	richTextBox1.Invoke(new EventHandler(delegate
	{
		richTextBox1.AppendText(response + "\n");
	}));            
}

private void port_DataReceived2(object sender, SerialDataReceivedEventArgs e)
{
	string response = serialPort11.ReadExisting();
	richTextBox1.Invoke(new EventHandler(delegate
	{
		richTextBox1.AppendText(response + "\n");
	}));           
}

圖例: