ST25R3916/7 driver for Linux (Raspbian)

Datasheet and technical documents

Official documentation from ST
ISO-14443-2 specification
ISO-14443-3 specification
ISO-14443-4 specification
NFC Type 2 Tags specification
NXP AN10833 for tag identification (to identify MIFARE classic tags)
SRI512 for ST25TB protocol

Electronic interface

This driver is designed for an ST25R3916 or ST25R3917 only connected on I2C bus (with no interrupt line). It was developed specifically for (Nabaztag 2022 NFC card

It can also be used with ST Microelectronics evaluation board after a small configuration (a soldering iron is required).

Installation

Install requirements

sudo apt-get install raspberrypi-kernel-headers

Clone source code.

git clone https://github.com/pguyot/st25r391x

Compile and install with

cd st25r391x
make
sudo make install

Makefile will automatically edit /boot/config.txt and add/enable if required the following params and overlays:

dtparam=i2c_arm=on
dtoverlay=cr14

You might want to review changes before rebooting.

Reboot.

Interface

Driver creates device /dev/nfc0

The interface was developed with companion Python library pynfcdev.