Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
hi,I want to implement nfc tag that detect iphone and send message that shoing on iphone screenhave someone that implement this logic?i start to implement some code and i detect the phone but not received data of APDU command from the phone.have hav...
Hello, I am writing a mobile application to interact with a STS25DV04KC-I chip. I am encountering problems when trying to write to to user memory on this chip from iOS using the ST25 framework.I want to write a byte array into area 2, and to modify t...
Hi I am using ST25R3916B as NFC reader and it is interfaced with STM32G0B1RT6N via I2C lines. I am not able to communicate with reader IC . I have checked I2C_EN line is connected to VDD_D voltage output from reader IC. it is 2.05V and SCL and SDA li...
Is it possible to use RFAL with ST25R200/R100 without utilizing the additional IRQ / EXTI Line? So just the SPI connection?
Hi everyone,I'm currently working with the ST25R3916B and trying to detect two NFC (ISO15693) tags simultaneously in the RF field.I'm using two ST25TV02KC tags and placing them close together above the antenna.However, my current implementation only...
I am currently trying to use the NFC09A1 together with an STM32G0. I am having multiple issues.I am using ST25NFC_Embedded_Lib_ST25R200_1.8.0_2I setup the platform and SPI. SPI communication is working properly. I checked the signals and I can also p...
Hi,I’m currently working with the ST25PcDemoApp. The project works well on its own—it can detect ST readers, read tags, and write NDEF messages successfully.Now, I’m trying to add FEIG reader (MR102) support. To do this, I copied the FEIG resource fi...
Hi, I plan on designing a NFC reader based on the ST25R3916B, with an "extended" range.So, the antenna will be a 150 mm x 150 mm PCB antenna, 2 turns, 1 mm traces and 1 mm gap.According to ST's NFC Inductance tool, this should yield an inductance of ...
Hi everyone,I'm currently working on an NFC reader design using the ST25R3916B in single-ended configuration to read and write ST25TV02KC tags (ISO15693, NFC-V).Instead of a PCB antenna, I'm using a round, wire-wound air coil antenna and now need to ...
Hi! I am trying to control the read write permission of my st25dv nfc tag with a nordic chip, but i am having a hard time doing that. I am able to write to it and everything using i2c and nfc, and with the following code #include <zephyr/kernel.h> ...