Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Hello everyone,I'm working on a STM32U585 application which works on STOP3 mode and on a customized electric circuit. One of the wake up sources is the ST25's GPO which should generate a pulse when a message is sent via FTM when mailbox is enabled. I...
I am attempting to connect to one of ST's CR95HF NFC chips, but I can't get it to respond correctly to the echo command.1) Reset CR95HF by toggling the IRQ line2) Set chip select line low3) Send two bytes : 0x00 0x55 = Command Echo4) Set chip select ...
Hi everyone,Me again :)I'm working on an access control system project and would appreciate some assistance or advice. My goal is to use NFC cards (ISO 14443A) and smartphones (in card emulation mode) as access keys. Specifically, I want to ensure th...
Hi,I am reading mifare desfire tag which is iso14443-4 compliant using cr95hf.Most of the time, communication is completed successfully but sometime, i am getting 0x90 result code when using SendRecv command.0x90 EUnintByte Residual bits in last byte...
Hello,I am working with an NFC reader with an ST25R3911B chip. The problem I am experiencing is the output power. The power emitted by the antenna is too high; therefore, my task is to reduce the transmitted power.To do this I have relied on reading ...
As written in the title, the ST25PC-NFC software does not detect the STEVAL-25R3916BA reader, despite being in the list of compatible readers. What can I do?Thank you
Hello,I added the RFAL software library to my existing wireless charger project.When I set totalDuration to 50U, there are cases where it cannot detect the card. I get better results when I set totalDuration to 25U. Will it cause problems if I reduce...
Hi,I have a X-NUCLEO-NFC08A1 and trying to use ST25R3916B RFAL library with nRF5340 from nordic semiconductor. SPI communication and initialization are working. I am running demoCycle() function from demo_polling.c. However, in the logs, I receive a...
Hey All, I'm looking to bootstrap a custom NFC antenna and was wondering if anyone could point me in the right direction for how to attach a ST NFC chip to a silver nanoparticle printed antenna using a laser jet (with this ink). Someone suggested us...
Hi ST Micro Team. We are planning to start a pilot project on the use of RFID in our office, We want to to place the tags on the laptops so that whenever an engineer with laptop exits a room the reader should detect. Could you please suggest a possi...