Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Hello,I recently added ST25R3916B to a board. I followed the evaluation board schematic pretty closely. During board "bring up" phase I had an issue where the osc_ok bit in `Auxiliary display register` was stuck low. Specifically, after powering u...
Hello,I'm using RFAL with the ST25R3916 to emulate NDEF tags.The tag emulation works perfectly.Now, I'd like to get the RSSI when the emulated tag is read.My problem is that rfalGetTransceiveRSSI() and even the low evel st25r3916GetRSSI() always retu...
Hello ST Community,Our company is preparing to begin a project segment for our mobile application that would involve switching to the ST25TV NFC chip specifically for its anti-cloning protection features. I am not a developer myself, but I would li...
Hello,I’m working with an ST25R3916 and an ESP32-S3. I ported the RFAL library to the ESP32 (platform.c), and it works — I can successfully read a tag with this setup.However, I’m struggling to emulate a tag in order to send an NDEF message.Does anyo...
Hello everyone!This is my first time trying to use the ST25R chip. After struggling with the datasheet, I was referred to the RFAL library and the UM2890 manual.However, I couldn't find clear step-by-step instructions.:backhand_index_pointing_right:...
Is there any way to get an antenna working in reader mode (chip 3911) when placed very close to a metal surface (around 2–3 mm)?I did some experiments with NFC in modern smartphones — their antennas sit right on top of the battery surface, and everyt...
Hello,I am running tha example code on RPi 5 on Ubuntu. Everything compiles fine but I get a Segmentation fault. I did configure the hwconfig.hI added some debug messages to the code:int main (void) { const ST25DV_PASSWD st25dv_i2c_password = {.Msb...
Hi everyone!I have just downloaded STSW-ST25002 source code and tried to build it in freshly installed Android Studio (Win11), but I got a couple of errors like "com.st.st25nfc.BuildConfig not found".Can someone give me exact steps to be able to buil...
Hi,I am working on a React Native project for an NFC app that needs to run on both iOS and Android. I am using the react-native-nfc-manager library to perform NFC operations. The NFC tag I am using is ST25DV, which supports NDEF and NfcV (ISO15693) t...
For our NFC project, we are developing a mobile application that supports both iOS and Android. We are using React Native along with the react-native-nfc-manager library. Some of the core features include reading and writing raw memory blocks as well...