public Invoker(Link862Reader reader)
{
this.Reader = reader;
//this.Reader.Response += OnResponse;
}
//fire event when card inserted or removed
public void FireCardStateChanged()
{
int exception_time_counter = 0;
const int MAX_EXCEPTION_TIME = 2;
bool show_msg_only_once = false;
Console.WriteLine("Thread started");
while (true)
{
try
{
while (true)
{
Command checkForCard = new Command(Operation.CheckPosition, "010000013838");
invoker.InvokeCommand(checkForCard);
if (Link862Reader.PrevState != Link862Reader.State)
{
Link862Reader.PrevState = Link862Reader.State;
break;
}
if (_readDeviceID == true)
{
//Command checkDescriptors = new Command(Operation.checkDescriptors, "010000013737");
Command checkDescriptors = new Command(Operation.CheckDescriptors, "01000002370135");
invoker.InvokeCommand(checkDescriptors);
_readDeviceID = false;
}
else if (_readDeviceSN == true)
{
Command checkSN = new Command(Operation.CheckSN, "01000002370034");
invoker.InvokeCommand(checkSN);
_readDeviceSN = false;
}
if (show_msg_only_once)
{
show_msg_only_once = false;
}
exception_time_counter = 0;
}
if (Link862Reader.State == 1)
{
if (StartedCardReading != null)
{
StartedCardReading(null, null);
}
Log.Debug("card inserted, read card number");
Link862Reader.CardNumber = "";
if (!ReadCardNumber())
{
CardError(this, null);
writeData = null;
continue;
}
if (!string.IsNullOrEmpty(writeData))
{
if (string.IsNullOrEmpty(writeData))
{
throw new ArgumentNullException();
}
writeData = writeData.Trim();
var numbertowrite = Link862Reader.ByteArrayToHexString(Encoding.ASCII.GetBytes(writeData));
var lengthHex = String.Format("{0:X}", writeData.Length);
var array =
Link862Reader.HexStringToByteArray("0100001F4200D00000" + lengthHex + "" + numbertowrite);
byte xorValue = array[0];
for (int i = 1; i < array.Length; i++)
{
xorValue ^= array[i];
}
string xor = Link862Reader.ByteArrayToHexString(new byte[] { xorValue });
Log.Debug("write card number command");
//invoker.InvokeCommand(new Command(Operation.SaveData, "0100001F4200D00000193F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3FAA"));
invoker.InvokeCommand(new Command(Operation.SaveData,
"0100001F4200D00000" + lengthHex + "" + numbertowrite + "" +
xor));
Log.DebugFormat("write card number:{0}", writeData);
writeData = null;
if (!ReadCardNumber())
{
CardError(this, null);
continue;
}
}
for (int i = 0; i < 3; i++)
{
if (Link862Reader.CardNumber.Length > 25)
{
Link862Reader.CardNumber = Link862Reader.CardNumber.Substring(0, 25);
}
if (Link862Reader.CardNumber.Length != 25 && !Link862Reader.IsNew)
{
if (!ReadCardNumber())
{
CardError(this, null);
continue;
}
}
}
if (Link862Reader.CardNumber.Length != 25 && !Link862Reader.IsNew)
{
if (CardError != null)
{
Link862Reader.COMPort.Close();
Link862Reader.COMPort.Open();
CardError(this, null);
continue;
}
}
if (InsertCard != null)
{
InsertCard(this, new CardEventArgs <string>(Link862Reader.CardNumber));
}
}
else
{
Log.Debug("card ejected");
Link862Reader.CardNumber = "";
if (EjectCard != null)
{
EjectCard(this, null);
}
}
}
catch (Exception ex)
{
/* if (ex is ArgumentNullException)
* {
* throw;
* }*/
if (ShowMsg)
{
if (exception_time_counter++ > MAX_EXCEPTION_TIME)
{
if (show_msg_only_once == false)
{
CardError(this, null);
show_msg_only_once = true;
}
exception_time_counter = 0;
}
}
Thread.Sleep(1000);
Link862Reader.TryReconnect();
}
}
}
