Experimental NFC emulation on PN532

[brinkhuisboaz-beep]

Hi,

I wanted to share something I recently came across while looking into NFC on PN532-based devices.

While exploring the Nautilus firmware for the LilyGO T-Embed, I noticed some very recent code (only a few days old) that implements NFC tag emulation using the PN532. This includes:

• UID-only emulation (anti-collision, ATQA, SAK)
• Full NTAG / Ultralight page emulation
• Parsing and using Flipper Zero .nfc files
• Basic NDEF record parsing (URL, Text, WiFi, etc.)

Relevant links:

• Nautilus firmware: https://github.com/n0xa/Nautilus-Firmware
• NFC implementation: https://github.com/n0xa/Nautilus-Firmware/blob/master/nautilus/nfc.cpp - https://github.com/n0xa/Nautilus-Firmware/blob/master/nautilus/nfc.h

From what I can tell, this suggests that the PN532 is not strictly limited to read/write functionality, but can support practical card emulation (at least for NTAG/Ultralight) when handled carefully in software.

I’m still learning, so I might be missing limitations here, but I thought this could be interesting to share as a possible experimental idea for PN532-supported boards.

I’d be curious to hear thoughts on feasibility, stability, and reader compatibility from people with more experience.

[bmorcelli]

Hey friend.. thanks for sharing this material!

I am currently working on the RFID emulation, changing from Adafruit to seed studio library, in which I needed to add some new functions to make it work with what we already have..

Atm I am making the NDEF emulation to work, but I'll take a look over this ideia, so maybe I can bring something over from it..

[brinkhuisboaz-beep]

Thanks for the reply! Glad it could be useful.
It might give some ideas or patterns for integrating similar functionality with PN532 on Bruce.

Thanks again for the response and I absolutely love the Bruce FW and community, Big fan here!