public static NfcTagType4Desfire Read(SCardChannel channel)
{
NfcTagType4Desfire t = new NfcTagType4Desfire(channel);
t.Read();
return(t);
}
/**m* SpringCard.NFC/NfcTag.Recognize
*
* SYNOPSIS
* public static bool Recognize(SCardChannel cardchannel, out NfcTag tag, out string msg)
*
* DESCRIPTION
* Determines if the card on the reader is a NFC Forum compliant tag
* It first checks the ATR to determine if the card can be type 2 or
* a type 4 and tries to recognize the content of the tag.
* It creates either a NfcTagType2 or a NfcTagType4 and returns true if the tag is recognized.
* It returns false if the card is not a NFC Forum tag
*
* SEE ALSO
* NfcTagType2.RecognizeAtr
* NfcTagType2.Recognize
* NfcTagType2.Create
* NfcTagType4.Recognize
* NfcTagType4.Create
*
*
**/
public static bool Recognize(SCardChannel cardchannel, out NfcTag tag, out string msg, out bool Desfire_formatable)
{
bool res = false;
msg = "";
tag = null;
Desfire_formatable = false;
if (NfcTagType2.RecognizeAtr(cardchannel))
{
Trace.WriteLine("Based on the ATR, this card is likely to be a NFC type 2 Tag");
if (NfcTagType2.Recognize(cardchannel))
{
Trace.WriteLine("This card is actually a NFC type 2 Tag");
tag = NfcTagType2.Create(cardchannel);
if (tag == null)
{
msg = "An error has occured while reading the Tag's content";
}
res = true;
}
else
{
Trace.WriteLine("Based on its content, this card is not a NFC type 2 Tag, sorry");
msg = "From the ATR it may be a NFC type 2 Tag, but the content is invalid";
}
}
else
if (NfcTagType4.Recognize(cardchannel))
{
Trace.WriteLine("This card is a NFC type 4 Tag");
tag = NfcTagType4.Create(cardchannel);
if (tag == null)
{
msg = "An error has occured while reading the Tag's content";
}
res = true;
}
else
#if (NFC_TAGS_DESFIRE)
if (NfcTagType4Desfire.Recognize(cardchannel))
{
msg = "A DESFire EV1 card has been detected.\nIt may be formatted into a type 4 Tag.";
Desfire_formatable = true;
res = false;
}
else
#endif
{
msg = "Unrecognized or unsupported card";
tag = null;
}
return(res);
}
