/// <summary>
/// Data receieved event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected virtual void serial_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (serial.IsOpen)
{
List <char> readBuffer = new List <char>();
while (serial.BytesToRead > 0)
{
readBuffer.Add((char)serial.ReadByte());
}
if (readBuffer.Count > 0)
{
m_parent.CardSwipeDetected(this, 1, new string(readBuffer.ToArray()).Trim());
}
}
}
/// <summary>
/// The method that reads for cards.
/// </summary>
private void ThreadWorker()
{
while (!TerminateThread)
{
try
{
NetworkStream stream = null;
StreamWriter writer = null;
StreamReader reader = null;
// Are we reading for cards?
if (ReadingCards)
{
char[] buffer;
// Check our TCP connection to make sure we are open and
// ready to go.
if (CheckConnection())
{
// We had the restablish the connection, so make
// sure we are talking to a CPCL printer.
stream = m_tcpClient.GetStream();
writer = new StreamWriter(stream);
reader = new StreamReader(stream);
writer.WriteLine(CPCLVersion);
writer.Flush();
// Attempt to read the version.
buffer = new char[VersionLength];
reader.Read(buffer, 0, buffer.Length);
// Check to make sure it returned valid values.
for (int x = 0; x < buffer.Length; x++)
{
if (!char.IsLetterOrDigit(buffer[x]))
{
throw new ApplicationException();
}
}
// Everything seems okay, so send the mag. init function.
short track;
lock (m_settingSync)
{
track = m_track;
}
writer.WriteLine(string.Format(CPCLMagInit, track, (track == 1?'%':';')));
writer.Flush();
}
// Is there any data to read?
if (m_tcpClient != null && m_tcpClient.Connected)
{
if (writer == null)
{
stream = m_tcpClient.GetStream();
writer = new StreamWriter(stream);
}
if (reader == null)
{
stream = m_tcpClient.GetStream();
reader = new StreamReader(stream);
}
writer.WriteLine(CPCLMagQuery);
writer.Flush();
if (m_tcpClient.Available > 0)
{
buffer = new char[m_tcpClient.Available];
reader.Read(buffer, 0, buffer.Length);
// Send the data to the parent class.
m_parent.CardSwipeDetected(this, m_track, new string(buffer).Trim());
}
}
}
else
{
// We are no longer reading, should we disconnect?
if (m_tcpClient != null && m_tcpClient.Connected)
{
stream = m_tcpClient.GetStream();
writer = new StreamWriter(stream);
writer.WriteLine(CPCLMagEnd);
writer.Flush();
}
CloseConnection();
}
}
catch
{
CloseConnection();
}
Thread.Sleep(ThreadPause);
}
// Clean up the connection.
CloseConnection();
}