private void DataReceivedHandler(
object sender,
SerialDataReceivedEventArgs e)
{
SerialPort sp = (SerialPort)sender;
string s = sp.ReadExisting().TrimEnd('\r', '\n');
nfc_code += s;
if (nfc_code.Length == 8)
{
callback?.Invoke(nfc_code);
callback = null;
nfc_code = "";
}
}
public void Read(NfcReadCallback cb)
{
callback = cb;
}
