Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
I'm attempting MIFARE communication using the ST25R3916 microcontroller, but the NT does not return during the AUTH communication. I successfully obtained the UID, and after tag selection, the SAK returned as 0x08. However, after sending 06, 01, the ...
Hello @all, I've downloaded ST25DVCryptoDemo for iOS from here, in order to take a look into the demo code for a new project.Once I've tried to build the Demo app I've got a big amount of errors. In fact the console gave me this message "too many err...
Hi Team,I am working with the STEVAL-D25R16B kit and have encountered a critical discrepancy in detection range between the embedded "Reader/Writer" demonstration and the PC-based USB mode.Here are the test results using ISO15693 tags:The Setup:Tag A...
Hi I am evaluating NFC function on your STEVAL 25R3916B board, but I would like to see how it works with the I2C interface. Currently, the default configuration is SPI.I have downloaded STM32CubeIDE and STEVAL-25R3916B_V2.1.0 project code, but am not...
Hello,I am using the ST25R3916B reader on a custom board to read NFC-A cards. I first experimented on the X-Nucleo-nfc08a1 expansion board connected to esp32-s3 devkit. I modified the RFAL library a bit to fit my needs and kept most registers at thei...
To realize carkey function, what conditions do card readers need and what aspects of hardware will be measured?
HelloI want to emulate NTAG215, but I don't think the CE corresponding to T2t is in RFAL. I'm not sure if I understand it correctly, but,First of all, the status of my code is as follows.FreeRTOS-based ListenerCylce pollingEmulate nfc contextUID, SAK...
Hello everyone,I just received the STEVAL-25R200A evaluation kit and I have a few doubts.1. Can I connect this board directly to another MCU?2. If yes, are the SPI pins available on the PCB?3. I found that the board uses an STM32G0B1KEU. Should I dev...
Hi,The ST25DV supports I2C speeds upto 1MHz, for which the datasheet has mentioned the rise and fall time using the RC time constant of <150ns according to I2C standards.We are using it at 100kHz only but there is no mention of rise and fall time for...
I am using ST25DV04KC tag and using the V_EH pin to power the VCC of the tag only( It will generate around 3.3V which is enough to power up the tag in I2C mode I believe) . I am looking for guidance on the maximum pullup voltage on the I2C and GPO li...