Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Hello everyone, for my project I am using the X-Nucleo-NFC08A1 board. In addition, I am using an external antenna that I operate differentially. The antenna is connected to the board via an SMA connector. I know that I should also adjust the matchin...
Good morning, currently I'm working on this task is to set the tag to have a different access levels.I downloaded IOS "NFC Tap" App to try out and there's this feature called, "Area Security Status".My question is,for "Readable, write protected by pa...
Hi,I have some code for reading/writing to a mailbox from the ST25R3916B transceiver to a ST25DV04KC-I tag. The read passes but the write fails every time.My reading function looks like this ... bool nfc_read_mailbox(void) { uint8_t pointer; ...
Hello,I have a really weird behaviour for my chip which I can't really figure out. Basically, I am using only the commands from the ST25DV library (st25dv discovery board).After 2 function calls (for example present password and disable RF) the subse...
Good afternoon, currently I want to write a simple NDEF File in the tag's EEPROM by using ST25R3916-DISCO kit.I will attach the guide pdf, "ST25PcDemoApp_software_guide" at below for reference.I faced this problem after I added JARs into "Java Build ...
Hi,Anyone having experience of reading data memory of ST25DV04K (ISO 15693) using a elatec TWN4 NFC reader? Regards Tomas
Hello,I want to read and write to st25dv64kc IC with X-Nucleo-NFC03A1 reader/writer. I can write up to 4 bytes with rfalNfcvPollerWriteSingleBlock() function. But when I want to write 2 blocks or more with rfalNfcvPollerWriteMultipleBlocks() function...
Do you have the antenna size and design process reference of NFC07A1? I want to know how to match the circuit and what is the inductance of the antenna.
Hello,I would like to know how can i perform the Device Firmware upgrade using ST25DV dynamic tag.I am using "en.STSW-ST25DV001SC-Source_v1.2.0" and tried out both demonstration examples ST25DVDemo ( firmware update using internal flash)I am able to ...
Hi,I designed a board with NFC Chip ST25DV64KC, which will be connected with a extra antenna, during the selecting of antenna products, one parameter confuses me very much: the self-Resonance Frequency, is it important? For example this product. Or a...
