Hi, We have a product with ST25R3911B and we failed the EMI pretest, mainly due to 3rd harmonic at 40.6MHz.I suspect that this is because we use polling for RFID tag detection, and the reason we are doing polling is because in wakeup mode the device ...
哈喽！ST官方，本人使用ST25R3911B这款芯片做NFC识别方案；同样的电路，做了5块板子，发现天线识别NFC标签的表现不一致；1、1号板子可以正常识别NFC标签；2、2号板子不能正常识别标签，需要调节匹配电路参数，且这两款板子调节的参数不一致；3、将1号的板子调整为2号的参数，1号板子无法识别，工作不正常；4、其余的板子也是，调整参数都不一致，才能正常工作。请问，大佬们，这是什么原因？都是同样的电路。
HelloLast week I received the ST25RU3993-HPEV devlopment kit. I have already downloaded the SDK and tried it out. Unfortunately, I have not found any information on how to write firmware for the board myself. Is that even possible? Or is there a way ...
I always get the error:-[NFCTagReaderSession transceive:tagUpdate:error:]:888 Error Domain=NFCError Code=100 "Stack Error" UserInfo={NSLocalizedDescription=Stack Error, NSUnderlyingError=0x282891950 {Error Domain=nfcd Code=54 "Session não ativa" User...
I'm encountering an issue with NFC functionality on iOS, specifically related to reading multiple areas. I have an NFC tag that stores data across three distinct memory areas. Using an Android device, I can effortlessly access all three areas with ju...
Hello,I have made a custom RFID reader board design which is similar to the X-NUCLEO-NFC08A1. However, it powers antennas in single ended mode with a cable through a u.fl connection. I am running the example code for the X-NUCLEO-NFC08A1 on this cust...
Hello, I have one ST25R3916B that feeds a few antennas spread out over 23 inches of length, using relays so that only one antenna is connected at a time. The ST25R3916B is located in the middle of the length. Traces are 20mil wide with ground plan...
Hi,I am looking for bidirectional mailbox example for the st25dv chip. I have an ANT7 nfc connected to a nucleo with the NFC7 mailbox example and the NFC Tag iOS App. I can read the mailbox stuff send from the Tag to the iOS App. But the other way ar...
we are observing weird error during initilization...enclosed the log dump (board2_init_fail_log.txt and ll13_01_board2_success_logs.txt)on Raspberry pi with 2 NFC03A1 boards (SPI3.0 works well, SPI0.0 fails)2 independent binaries are being used with ...
Hello,I was wondering how to edit the analogConfigTbl_NFC08A1.c file in order to change the chip's operation from differential to single ended. I have looked at datasheets and it is very confusing what register-mask-value should be used to enable sin...