nrf52 NFC function

[Peaghus]

Hello, I found that there has been SDK update for NRF52 regarding NFC. Currently, it looks like NFC is just used for tagging.

I'd like to know whether I can use NFC peripheral in such a way that it sends data like HRS to smartphone just like it does using BLE. The idea is that I want to use NFC for operation when master and slave are close each other, while use Bluetooth for operation in distant situation.

[endnode]

Hi Peaghus and RK,

According to Nordic guys there is actually no HW limitation to run full ISO/ICE 14443 Type A up to 106kbps (meaning "card emulation" if you want to use NFC terminology). Now we need to wait for release of NFC "stack" but what I've learned it should be only NFC Forum Tag Type 2 (aka MIFARE Ultralight) - in a matter of weeks - and NFC Forum Tag Type 4 (aka MIFARE DESFire) - in a matter of months. These will be most probably hooked to higher level then ISO/ICE 14443 part 3&4 so you just fill some "containers" which will be than interpreted by NFC "lib" as Tag Type 2 or 4 objects ("files") and answered to particular read operations by reader side (phone) autonomously.

However if you have more time to learn or already have such low level knowledge or you get lucky to find something on the web in public domain you should be able to use alternative NFC "stack" with proper ISO/ICE 14443 part 3&4 emulation and then you should be able to run there almost any kind of "smart card" application. Making then bidirectional data exchange protocol is the smallest problem;)

Cheers Jan

[RK]

I just read the manual section in a bit more detail today. I have to go back and re-read the NFC docs I've not looked at for forever. it does look pretty full-featured. I have, however, zero NFC-enabled anything here to do any testing. Probably time to go buy something.