NFC: TNEP poller

The NFC TNEP poller sample demonstrates how to use the TNEP for polling device library to exchange data using an NFC polling device.


The sample supports the following development kits:

Hardware platforms


Board name

Build target

nRF5340 DK




nRF52 DK




nRF52840 DK




The sample has the following additional requirements:

  • NFC Reader ST25R3911B Nucleo expansion board (X-NUCLEO-NFC05A1)

  • NFC Type 4 Tag TNEP device


The sample interacts with the NFC Type 4 Tag.

The sample reads the NFC Type 4 Tag and looks for the TNEP initial message. After finding it, the first service from the message is selected and the poller attempts to exchange data. Next, the service is deselected.

Building and running

This sample can be found under samples/nfc/tnep_poller in the nRF Connect SDK folder structure.

To build the sample with Visual Studio Code, follow the steps listed on the How to build an application page in the nRF Connect for VS Code extension documentation. See Building and programming an application for other building and programming scenarios and Testing and debugging an application for general information about testing and debugging in the nRF Connect SDK.


If you are using debug messages in the NFCT driver, the driver might not be working properly if you have CONFIG_LOG_MODE_IMMEDIATE enabled. The NFCT driver is part of the nrfx driver package. For more information about this driver, see the NFCT driver page in the nrfx repository.


After programming the sample to your development kit, you can test it with an NFC-A Tag device that supports NFC’s TNEP. Complete the following steps:

  1. Connect to the kit with a terminal emulator (for example, PuTTY). See How to connect with PuTTY for the required settings.

  2. Reset the kit.

  3. Put the NFC Tag device antenna in the range of the NFC polling device. The NFC polling device selects the first service and exchanges basic data with it. After that, the service is deselected.

  4. Observe the output in the terminal.


This sample uses the following nRF Connect SDK drivers:

It uses the following nRF Connect SDK libraries:

In addition, it uses the following Zephyr libraries:

  • include/zephyr/types.h

  • include/sys/printk.h

  • include/sys/byteorder.h

  • include/zephyr.h