ST ST25R3916-DISCO User manual

March 2023 UM2517 Rev 3 1/40
1
UM2517
User manual
ST25R3916-DISCO and STEVAL-25R3916B
reference graphical user interface
Introduction
The ST25R3916-DISCO GUI (STSW-ST25R010) software allows the user to configure,
evaluate, and communicate with the ST25R3916-DISCO and STEVAL-253916B kits using a
PC.
The software must be used with the ST25R3916-DISCO or the STEVAL-253916B kits,
which include a ready-to-use board to interface with the host PC through USB. This
software allows the user to evaluate the features of ST25R3916 and ST253916B, high
performance NFC universal device and EMVCo readers, communicating with the 32-bit
core STM32L476 MCU via the SPI bus.
The boards are powered through the USB port, and no external power supply is required.
They include an ST25R3916 or an ST25R3916B device, an etched antenna, and the
associated tuning components.
This software package includes the ST25PC-NFC software, which allows access to all
features of ST25 NFC / RFID Tags and ST25 Dynamic NFC Tags.
www.st.com

Contents UM2517
2/40 UM2517 Rev 3
Contents
1 Demonstration kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Board installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installing the ST25R3916-DISCO software (STSW-ST25R010) . . . . . . . . 4
1.3 Firmware update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.1 Method 1: DFU of STM32L4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3.2 Method 2: ST-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 ST25R3916 Discovery GUI tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4.1 StartUp tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4.2 Antenna features tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4.3 Wakeup tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.4.4 DPO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.4.5 Polling tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
1.4.6 NFCIP tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
1.4.7 ISO 14443A tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1.4.8 ISO 14443B tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
1.4.9 ISO-DEP tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
1.4.10 ISO 15693 tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
1.4.11 FeliCa™ tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1.4.12 Card Emulation tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
1.4.13 NFC Type 1 tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
1.4.14 NFC Type 2 tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
1.4.15 Debug tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
1.4.16 Analog Config tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2 Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3 Logging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
4 Using the ST25PC NFC application . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

UM2517 Rev 3 3/40
UM2517 List of figures
3
List of figures
Figure 1. Device manager window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Device detected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. StartUp tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 4. Antenna features tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 5. Wakeup window - Inductive (amplitude) wake-up enabled. . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 6. Wakeup window - Inductive (phase) wake-up enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7. Wakeup window - Capacitive wake-up enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 8. DPO panel in disabled state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 9. DPO panel enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 10. Setting DPO with amplitude based measurement, using two power levels . . . . . . . . . . . . 15
Figure 11. Enabled DPO with not optimized threshold settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 12. Switching resistance values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 13. Load and save DPO dataset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 14. Analog configuration with DPO modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 15. DPO tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 16. DPO log window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 17. Choose a power level set of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 18. DPO using AM tooltip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 19. Polling tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 20. NFCIP tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 21. ISO 14443A tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 22. ISO 14443B tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 23. ISO-DEP tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 24. ISO 15693 tab. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 25. FeliCa™ tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 26. Card Emulation tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 27. NFC Type 1 tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 28. NFC Type 2 tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 29. Debug tab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 30. Analog Config tab with settings loaded. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 31. Functions panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 32. Register map toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 33. Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 34. Log window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 35. Register map toolbar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Demonstration kits UM2517
4/40 UM2517 Rev 3
1 Demonstration kits
This section describes the USB driver installation, and the GUI (graphical user interface)
software for communication between the PC and the kits.
1.1 Board installation
To install a board, connect it to a PC with a USB cable leading from micro USB on MB1396
to a USB port capable to deliver more than 250 mA of current. Usually, this kind of port is on
a powered USB hub, or directly on a PC.
1.2 Installing the ST25R3916-DISCO software (STSW-ST25R010)
To install the ST25R3916-DISCO development software (STSW-ST25R010)
•Download the latest version of the ST25R3916-DISCO development software from
www.st.com
•Execute the installer and follow the GUI install procedure
When the installation process is complete, the ST25R3916-DISCO development software
can be used.
Note: The boards operate using USB HID (human interface device class). There are no special
drivers. Windows®uses stock mouse and keyboard driver.
1.3 Firmware update
The demonstration kit contains a firmware, and it is advisable to update it before using the
STSW-ST25R010. There are two methods available, detailed in the next subsections.
1.3.1 Method 1: DFU of STM32L4
The ST25R3916-DISCO demonstration kit contains a DFU driver, to install before going
through a firmware update. Typically, the driver is installed in background. If this fails, open
the GUI, select “Firmware update” and follow the procedure detailed below.
1. Select in the menu “Help” the entry “Firmware update”. A file chooser opens, select a
firmware .hex file matching the board. If the DFU driver is already installed, the
firmware update takes a few seconds, otherwise go to point 2.

UM2517 Rev 3 5/40
UM2517 Demonstration kits
39
2. If the DFU driver is not installed, open the “Device Manager” window (no need to wait
for the GUI feedback):
a) Select under “Other devices” the “STM32 BOOTLOADER”
b) Click on the right button of the mouse and select “Update driver software”
(Figure 1)
c) Select “Browse my Computer for driver software”
d) Enter “C:\Program Files (x86)\STMicroelectronics\ST25R3916_Discovery_GUI
\Driver” and install it
e) Under “Universal Serial Bus controllers” appears “STM device in DFU Mode”
(Figure 2)
f) In the meantime, the ST25R3916-DISCO GUI is in timeout, and the USB field in
the status bar is red
g) To do the update, restart from point 1
Caution: The loading of a wrong firmware makes the board unusable. In this case, as no Boot button
is available, use method 2 (see Section 1.3.2).
Figure 1. Device manager window

Demonstration kits UM2517
6/40 UM2517 Rev 3
Figure 2. Device detected
1.3.2 Method 2: ST-Link
Use the ST-Link integrated on MB1396. Connect the mini USB to your PC and simply drag
and drop the firmware binary to the new appearing drive.

UM2517 Rev 3 7/40
UM2517 Demonstration kits
39
1.4 ST25R3916 Discovery GUI tab
If the software package is installed correctly, the demonstration is put into USB mode (User
button while starting), the ST25R3916-DISCO board is connected via micro USB to PC USB
port, and the main menu is displayed (see Figure 3).
The toolbar also contains the ST25PC-NFC icon, which enables the ST25 tags editing. To
open it, click on the ST25PC-NFC icon, while a board is connected. The Disco GUI
automatically disconnects from the board, and opens the ST25PC-NFC to take control of
the board. To go back to the Disco reader functionality, just close the ST25PC-NFC or click
on the icon again. The ST25PC-NFC is closed automatically in this latter case.
See Section 4 for details.
Note: The firmware version number is shown in the status bar of the main window.
This tab allows the user to access several submenus:
•StartUp tab (Section 1.4.1)
•Antenna features tab (Section 1.4.2)
•Wakeup tab (Section 1.4.3)
•DPO (Section 1.4.4)
•Polling tab (Section 1.4.5)
•NFCIP tab (Section 1.4.6)
•ISO 14443A tab (Section 1.4.7)
•ISO 14443B tab (Section 1.4.8)
•ISO-DEP tab (Section 1.4.9)
•ISO 15693 tab (Section 1.4.10)
•FeliCa™ tab (see Section 1.4.11)
•Card Emulation tab (Section 1.4.12)
•NFC Type 1 tab (Section 1.4.13)
•NFC Type 2 tab (Section 1.4.14)
•Debug tab (Section 1.4.15)
•Analog Config tab (Section 1.4.16)

Demonstration kits UM2517
8/40 UM2517 Rev 3
1.4.1 StartUp tab
Figure 3. StartUp tab
The status tab on the bottom right corner shows the connection status. If the HW is
successfully connected via USB the status turns to green, and displays the firmware
version.
•Click on “Demo Board Check” button. This action checks the USB connection to the
demonstration board, and reads the board information required for the GUI operation.
The configuration of the ST25R3916/ST25R3916B is based on this information.
•Click on “Adjust Regulators” button to set automatically the regulators. This command
improves the system power supply rejection ratio.
•Click on “Calibrate Antenna” button. This command automatically adjusts the
resonance frequency of the antenna LC tank.
•Antenna trimming OK is displayed next to the button.
When the Start-up procedure is done, the user can proceed using the other tabs.

UM2517 Rev 3 9/40
UM2517 Demonstration kits
39
1.4.2 Antenna features tab
Figure 4. Antenna features tab
•The needle shows the amplitude as measured on RFI, and the phase difference
between RFI and RFO.
•The antenna can be tuned for a target amplitude or a target phase, or for a combination
of these parameters.
•Click on “Measure Antenna” button to measure these three values.
Amplitude and phase difference can be continuously monitored using the “Continuous
Measurement” button. Moreover, when this option is activated and a piece of metal is
approached to the antenna, a detuning effect can be observed.
The “Auto Adjust Antenna” button allows the user to tune the antenna. This action can be
done continuously by pressing the “Continuous Adjust Antenna” button.
It is possible to manually adjust the DAC driving varicaps, it is advised to use the
“Continuous Measurement” to see its effect.
Note: The menu can be easily used for matching network evaluation of ST25R3916/ST25R3916B
based readers.

Demonstration kits UM2517
10/40 UM2517 Rev 3
1.4.3 Wakeup tab
The devices offer different wake-up modes. Each one generates an interrupt to the
microcontroller in sleep mode:
1. Inductive (amplitude)
2. Inductive (phase)
3. Capacitive (not available on ST25R3916B)
Note: This demonstrator is for evaluation purposes. There are continuous updates ongoing, which
may result in extra current consumption. The “read at interrupt only” switch avoids
interaction and minimizes the current.
Inductive wake-up
The inductive wake-up scans periodically the input signal amplitude and the phase
difference between output and input signals. If one of these antenna tuning parameters
changes, an interrupt is generated.
To achieve the offset level click on “Measure” and “Measurement to Offset” buttons to set
the initial status (“Offset”).
Figure 5. Wakeup window - Inductive (amplitude) wake-up enabled