ISO14443a-4 emulation

[bettse]

Is it possible to send a response in a NfcProtocolIso14443_4a listener callback? I didn't see any equivalent to iso14443_4a_poller_send_block and iso14443_3a_listener_send_standard_frame which is used by iso14443_4a_listener_send_ats is private (in lib/nfc/protocols/iso14443_3a/iso14443_3a_listener_i.h).

[skotopes]

@RebornedBrain @gornekich FYI

[RebornedBrain]

Hi, @bettse, yes currently it's not possible to send frames from iso14443_4a_listener.c and what kind of response do you need? If it is a part of iso14443_4 spec maybe it should be done in a same manner as iso14443_4a_listener_send_ats

[bettse]

yes currently it's not possible

I'm glad I didn't just miss it 👍

what kind of response do you need?

I think it'd be called a "R-APDU". I'm looking to do some type 4 emulation, so when the flipper gets the select application, I need to respond with either a file not found (6A 82) or the appropriate "Answer to Select". I've got a couple ideas for stuff to emulate, but the easiest to discuss publicly would be emulating the NTAG424.

Seeing as how this would be a new feature, feel free to close this issue out if you'd like to track it through some other system or issue.