mifare_desfire: increase baud rate to maximum

nfc-tools / libfreefare

A convenience API for NFC cards manipulations on top of libnfc.

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mifare_desfire: increase baud rate to maximum #134

Closed mtdcr closed 3 years ago

mtdcr commented 3 years ago

The DESFire family can handle 848 kbit/s.

mtdcr commented 3 years ago

Apparently this doesn't work with acr122_usb.

smortex commented 3 years ago

According to the first product specification, this speed is not supported:

Fast data transfer: 106 kbit/s, 212 kbit/s, 424 kbit/s

Some kind of mechanism which would permit the user to select a faster speed in favor of a "default safe" one might be a good addition, but I think it's not good to operate above 424kbit/s by default.