Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Hi everyone,I’m currently working with ST25TV02KC NFC tags and the ST25R3916B reader, using the RFAL library.I’m trying to access the configuration registers via the following functions:rfalST25xVPollerReadConfiguration(...)rfalST25xVPollerWriteConfi...
Hi everyone,I'm working with the ST25TV02KC NFC tag (NFC Forum Type 5) and using the ST25R3916B as my custom reader (on a PCB). I’d like to be able to read from and write to the tag using my reader, but also allow partial access via smartphone (e.g. ...
Hi,I am trying to measure the parameters of an external differential antenna I designed. I have been using the application note AN4974 in order to figure out how I can measure these parameters and I have some confusion on the setup and the results I ...
Hello,Tag reading was working perfectly on my previous setup.I now want to migrate my project from an STM32G0B1RE to an STM32L073RZ. Since the Arduino UNO R3 physical pinout standard is respected, the X-NUCLEO-NFC08A1 shield (which uses SPI, IRQ, LE...
HelloI’m currently designing an NFC product using the ST25R3911B reader IC and evaluating two standard NFC antennas from Leankon for read distance performance:LK1860701 (larger size)LK1860601 (smaller size)Test Setup & Observations:Matching Circuit O...
Hello, I am currently working on initializing ST25R3916B (X-NUCLEO-NFC08A1) with Nucleo-H563ZI microcontroller, using the Zephyr RTOS and the zephyr-st25r driver. My primary goal is to successfully initialize the ST25R3916B chip to a state where it c...
I want to use ST25R100 directly with register settings without a library. How can I start it in wake up mode? When I try the code I gave below, the Interrupt pin comes to a fixed 3.3V and does not change.void st25r100_WakeUp_Init(void) { // 0. Wake-u...
Hi,I have some noise on the Vdd pin of the ST25R3911B.I send the fieldon() command and there is a huge noise at 27MHz frequency on the Vdd (8) pin.Below is a screenshot of the refdesign disco Vdd pin with the fieldon and the noise observed on my boar...
Hi,I would like to know if it is possible to use another oscillator source other than a crystal for the ST25R300?I saw another post for the ST25R3911B, Is it possible to use a Clock Oscillator instead of Quartz crystal oscillator?, although obviously...
Hello, I am working with X-CUBE-NFC6 example and I am able to read and write data to a rfid tag successfully. Just as a note, hw configuration is nucleo U083RC boards with NFC08A1 expander board for rfid reader. I would like to be able t...