RE: NRF52840 DK + NFC Shield Data Read

Einar Thorsrud — Thu, 10 Jun 2021 12:06:14 GMT

Hi,

[quote user=""]

There looks to be an NFC library from Nordic:

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v11.0.0%2Flibrary_nfc.html

[/quote]

This is for using the NFC tag peripheral within the nRF device, so it is not relevant for using the adfruit NFC reader.

[quote user=""]

Or should I use the Adafruit PN532 NFC Shield library:

https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk5.v11.0.0%2Fgroup__nrf__external__adafruit__pn532.html

[/quote]

Yes, this is what you want in this case and what is used by the Adafruit Tag Reader Example.

[quote user=""]Maybe I should use the function adafruit_pn532-ntag2xx_read_page ? Where should this be placed in the sequence of everything?[/quote]

You typically read using adafruit_pn532_tag2_read() as you can see in examples\nfc\adafruit_tag_reader\main.c. I suggest you ask on Aidafruit forums if you get into troubles though as this is their code and just provided externally in the nRF5 SDK for the purpose of testing the NFC tag examples.