private static void WriteCard()
{
Console.Clear();
"Testing RFID".Info();
var device = new RFIDControllerMfrc522(Pi.Spi.Channel0, 500000, Pi.Gpio[18]);
var userInput = Terminal.ReadLine("Insert a message to be written in the card (16 characters only)").Truncate(16);
"Place the card on the sensor".Info();
while (true)
{
// If a card is found
if (device.DetectCard() != RFIDControllerMfrc522.Status.AllOk)
{
continue;
}
// Get the UID of the card
var uidResponse = device.ReadCardUniqueId();
// If we have the UID, continue
if (uidResponse.Status != RFIDControllerMfrc522.Status.AllOk)
{
continue;
}
var cardUid = uidResponse.Data;
// Select the scanned tag
device.SelectCardUniqueId(cardUid);
// Writing data to sector 1 blocks
// Authenticate sector
if (device.AuthenticateCard1A(RFIDControllerMfrc522.DefaultAuthKey, cardUid, 19) == RFIDControllerMfrc522.Status.AllOk)
{
userInput = (userInput + new string(' ', 16)).Truncate(16);
device.CardWriteData(16, Encoding.ASCII.GetBytes(userInput));
}
device.ClearCardSelection();
"Data has been written".Info();
Terminal.WriteLine(ExitMessage);
while (true)
{
var input = Console.ReadKey(true).Key;
if (input != ConsoleKey.Escape)
{
continue;
}
break;
}
break;
}
}
private static void TestRfidController()
{
"Testing RFID".Info();
var device = new RFIDControllerMfrc522(Pi.Spi.Channel1, 500000, Pi.Gpio[18]);
while (true)
{
// If a card is found
if (device.DetectCard() == RFIDControllerMfrc522.Status.AllOk)
{
"Card detected".Info();
// Get the UID of the card
var uidResponse = device.ReadCardUniqueId();
// If we have the UID, continue
if (uidResponse.Status == RFIDControllerMfrc522.Status.AllOk)
{
var cardUid = uidResponse.Data;
// Print UID
$"Card UID: {cardUid[0]},{cardUid[1]},{cardUid[2]},{cardUid[3]}".Info();
// Select the scanned tag
device.SelectCardUniqueId(cardUid);
// Writing data to sector 1 blocks
// Authenticate sector
if (device.AuthenticateCard1A(RFIDControllerMfrc522.DefaultAuthKey, cardUid, 7) == RFIDControllerMfrc522.Status.AllOk)
{
var data = new byte[16 * 3];
for (var x = 0; x < data.Length; x++)
{
data[x] = (byte)(x + 65);
}
for(int b = 0; b < 3; b++)
{
device.CardWriteData((byte)(4 + b), data.Skip(b * 16).Take(16).ToArray());
}
}
// Reading data
var continueReading = true;
for (int s = 0; s < 16 && continueReading; s++)
{
// Authenticate sector
if (device.AuthenticateCard1A(RFIDControllerMfrc522.DefaultAuthKey, cardUid, (byte)((4 * s) + 3)) == RFIDControllerMfrc522.Status.AllOk)
{
$"Sector {s}".Info();
for (int b = 0; b < 3 && continueReading; b++)
{
var data = device.CardReadData((byte)((4 * s) + b));
if (data.Status != RFIDControllerMfrc522.Status.AllOk)
{
continueReading = false;
break;
}
$" Block {b} ({data.Data.Length} bytes): {string.Join(" ", data.Data.Select(x => x.ToString("X2")))}".Info();
}
}
else
{
"Authentication error".Error();
break;
}
}
device.ClearCardSelection();
}
}
}
}
internal static (bool, bool) WriteTagRC522(string nfcNewDataContent)
{
if (_initDone == false)
{
Init();
}
string result = string.Empty;
bool cardDetected = _nfcReader.DetectCard() == RFIDControllerMfrc522.Status.AllOk;
bool writeDone = false;
if (cardDetected)
{
var uidResponse = _nfcReader.ReadCardUniqueId();
if (uidResponse.Status == RFIDControllerMfrc522.Status.AllOk)
{
var cardUid = uidResponse.Data;
//PrintUid(cardUid, uidResponse.DataBitLength);
_nfcReader.SelectCardUniqueId(cardUid);
int byteBlocksToWrite = 7; // 7 * 16 bytes = 112 bytes
int byteBlocksWritten = 0;
try
{
// Write data to sectors
byte blockAdress = 4;
for (int i = 0; i < byteBlocksToWrite; i++)
{
if (_authOn && _nfcReader.AuthenticateCard1A(RFIDControllerMfrc522.DefaultAuthKey, cardUid, (byte)(blockAdress + 3)) != RFIDControllerMfrc522.Status.AllOk)
{
//Console.WriteLine("Authentication error");
}
string data = string.Concat(nfcNewDataContent.Skip(i * 16).Take(16));
data = (data + new string(' ', 16)).Truncate(16);
var writeStatus = _nfcReader.CardWriteData(blockAdress, Encoding.ASCII.GetBytes(data));
Console.WriteLine($"Status: {writeStatus}");
if (writeStatus == RFIDControllerMfrc522.Status.AllOk)
{
byteBlocksWritten++;
}
blockAdress += 4;
}
if (byteBlocksWritten == byteBlocksToWrite)
{
Console.WriteLine("Write done");
writeDone = true;
}
else
{
Console.WriteLine("Write error");
}
Console.WriteLine($"{byteBlocksWritten} of {byteBlocksToWrite} written");
}
finally
{
_nfcReader.ClearCardSelection();
}
}
}
return(cardDetected, writeDone);
}
