Nordic nrf52833 NFC tag type 2 code for Zephyr

[poreillyNewtrax]

Hi,
I would like to emulate a NFC type 2 tag with my Nordic nrf52833 based device. I have the source code for the NFC driver (nrfx_nfct.c), but I can not find the source code for the t2t protocol stack. Nordic only offers a pre-compiled library. I doubt I can link this library with my Zephyr application.
Anyone knows if there is an open source NFC t2t protocol stack that I could integrate into my Zephyr subsys ?

Philippe