[Special direct mode + Direct Mode 1] Emulate a mifare card

TimDcom

Hi,

I would like to use the TF7970a to emulate a mifare card. I tried to modify the code from the SLOA214 documentation to enable the card emulation mode but it doesn't seem to work.

Anyone already did this ?

Do you know if the special direct mode and direct mode 1 can work with the card emulation mode ?

Thanks.

over 10 years ago

0 Josh Wyatt over 10 years ago

TI__Guru* 91206 points

Tim -

the special direct mode is advanced version of the original way we handled MFC cards. (as a reader)

card emulation example is here ==>

0 TimDcom over 10 years ago in reply to Josh Wyatt

Prodigy 40 points

Thank you for you reply.

I've seen this documentation, maybe I'm wrong but it seems not possible to emulate a Mifare card with this exemple because the parity bit and crc are crypted, only anticollision phase is possible. It's why I want to use the special direct mode in card emulation mode (OOK, Manchester Code).

0 TimDcom over 10 years ago in reply to Josh Wyatt

Prodigy 40 points

Thanks you for your reply Josh.

I've seen this documentation, maybe I'm wrong but it seems not possible to use it to have a full mifare tag emulation, because I need to send parity and crc crypted. It's why I would like to use special direct mode to handle the parity and CRC myself in card emulation mode (OOK, Manchester Code).

0 Josh Wyatt over 10 years ago in reply to TimDcom

TI__Guru* 91206 points

that is a good point - I'll get one of my guys to evaluate that and get back to you as soon as he can work it in. OK?

0 TimDcom over 10 years ago in reply to Josh Wyatt

Prodigy 40 points

Of course, so nice of you :)

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[Special direct mode + Direct Mode 1] Emulate a mifare card