Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Hi all, I’m using an ST25R3916 with RFAL on an STM32 and I’m trying to talk to an NXP NTAG 5 Boost (ISO15693/NFC-V) using its custom commands: READ/WRITE SRAM (0xD2/0xD3) and READ/WRITE I²C (0xD5/0xD4). Plain ISO15693 commands work fine (e.g., Read...
Hi,We have duplicated the design onto our own NFC tag, copying the same antenna design onto a flexi pcbWhat should be the tuning capacitor for this coil be for NFC ?If thats not available, what is the inductance value of the antenna so we can try and...
Hi,I am using a ST25R3920 to emulate a type 2 tag. I have got the Read part working and I am able to send 16 bytes of data in response to 0x30 and confirm the data on a phone. But when the phone tries to write data using 0xA2, I am unable to send the...
Hello,I am using the ST-25R200 ready-to-use NFC evaluation board for my application. I have already used the ST25R200 EVAL GUI software which functions without any problem. Since I want to develop my own software and integrate it for the application ...
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...
I am using a NUCLEO-L053R8 board with an X-NUCLEO-NFC08A1 extension. I made modifications to the NFC08A1 to enable I2C communications and this works. I can read the A bank of registers and the values all make sense except for IO configuration registe...
Hi everyone,I'd like to use the ST25R3916B device for a very low-power device. I downloaded the X-CUBE-NFC6 library version 3.0.0, and I don't see an example of calling rfalLowPowerModeStart().I saw earlier that someone managed to find it in version ...
Hello, I use st25r3916 driver and DemoCycle from X-Cube-NFC6 app but devCnt for discovery is never more than 1 even though I have 2 tags next to the antenna and devLimit is set to 3. Also I see state machine never goes to RFAL_NFC_STATE_POLL_SELEC...
Dear Colleagues, Dear STM Team,I use an ST25R3911B, and when I connect to the tag, I send data there and everything is fine. The problem occurs when I hold my phone with the eCard for payments to it. It then attempts to pay with a card over the phone...
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...