public static void init()
{
try
{
string reader = "/dev/ttyS0";
rfidHat = new Pn532(reader);
byte[] readUid = null;
readUid = rfidHat.ListPassiveTarget(MaxTarget.One, TargetBaudRate.B106kbpsTypeA);
Thread.Sleep(200);
do
{
var decrypted = rfidHat.TryDecode106kbpsTypeA(readUid.AsSpan().Slice(1));
var uid = BitConverter.ToString(decrypted.NfcId);
Console.WriteLine("Unique User ID: " + uid);
rfidHat.ReleaseTarget(1);
close();
break;
}while(readUid != null);
close();
}
catch (System.Exception)
{ init(); }
}
// NOTE: This section is not tested! I'm including it as a possible approach.
private async Task RFIDHardwareManager(CancellationToken cancelToken)
{
while (!cancelToken.IsCancellationRequested)
{
rfidHat = new Pn532(reader);
byte[] retData = null;
retData = rfidHat.ListPassiveTarget(MaxTarget.One, TargetBaudRate.B106kbpsTypeA);
Thread.Sleep(200);
do
{
var decrypted = rfidHat.TryDecode106kbpsTypeA(retData.AsSpan().Slice(1));
var uid = BitConverter.ToString(decrypted.NfcId);
rfidHat.ReleaseTarget(1);
close();
Console.WriteLine("Unique User ID: " + uid);
SendRFIDEvent(uid);
break;
}while(retData != null);
// Give time to PN532 to process
rfidHat.Dispose();
Thread.Sleep(1000);
}
}
public static void WriteCode()
{
// Creating the device class through serial: /dev/ttyS0
try
{
string device = "/dev/ttyS0";
var reader = new Pn532(device);
byte[] writeUser = null;
writeUser = reader.ListPassiveTarget(MaxTarget.One, TargetBaudRate.B106kbpsTypeA);
Thread.Sleep(200);
do
{
var decrypted = reader.TryDecode106kbpsTypeA(writeUser.AsSpan().Slice(1));
var uid = BitConverter.ToString(decrypted.NfcId);
Console.WriteLine("Enter Username:");
var userName = Console.ReadLine();
byte[] byteArray = System.Text.Encoding.UTF8.GetBytes(userName);
byte[] cardData = null;
reader.Transceive(1, byteArray, cardData);
MifareCard mifareCard = new MifareCard(reader, decrypted.TargetNumber)
{
BlockNumber = 0, Command = MifareCardCommand.AuthenticationA
};
mifareCard.SetCapacity(decrypted.Atqa, decrypted.Sak);
mifareCard.SerialNumber = decrypted.NfcId;
mifareCard.KeyA = new byte[6] {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
mifareCard.KeyB = new byte[6] {
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF
};
for (byte block = 0; block < 1; block++)
{
mifareCard.BlockNumber = block;
mifareCard.Command = MifareCardCommand.AuthenticationB;
var ret = mifareCard.RunMifiCardCommand();
if (ret < 0)
{
// Try another one
mifareCard.Command = MifareCardCommand.AuthenticationA;
ret = mifareCard.RunMifiCardCommand();
}
if (ret == 1)
{
mifareCard.BlockNumber = block;
mifareCard.Command = MifareCardCommand.Write16Bytes;
ret = mifareCard.RunMifiCardCommand();
Console.WriteLine(BitConverter.ToString(cardData));
continue;
}
}
reader.ReleaseTarget(1);
break;
}while(writeUser != null);
}
catch (System.Exception)
{
WriteCode();
}
}
