ST25 NFC/RFID tags and readers

lib_NDEF for st25dv04k to store the ndef format and can read it with my phone. Is there a relevant code to refer to?

Hello,I am trying to build a NFC project that receives 3 different ADC data from the MCU side (stm32l031k5) to the mobile phone.However, there is a critical problem that:NFC reading is too slow. There is a term like few seconds to read new text tag.The values for the ADCs are not renewed and the text tag stays same. (not always but most time, it happens)I am sharing my NFC code here.void MX_NFC7_NDEF_URI_Process(void) { char s1[200];  sprintf(s1, "%d %d %d %d %d %d %d %d %d %d %d %d %d %d %d", vol1[0], vol2[0], vol3[0], vol1[1], vol2[1], vol3[1], vol1[2], vol2[2], vol3[2], vol1[3], vol2[3], vol3[3], vol1[4], vol2[4], vol3[4]); /* Init ST25DVXXKC driver */ while (NFC07A1_NFCTAG_Init(NFC07A1_NFCTAG_INSTANCE) != NFCTAG_OK); /* Reset Mailbox enable to allow write to EEPROM */ NFC07A1_NFCTAG_ResetMBEN_Dyn(NFC07A1_NFCTAG_INSTANCE); NfcTag_SelectProtocol(NFCTAG_TYPE5); /* Check if no NDEF detected, init mem in Tag Type 5 */ if (NfcType5_NDEFDetection() != NDEF_OK) { CCFileStruct.MagicNu

Can the following code be used to enable the phone to read and write NDEF messages?I use X-NUCLEO-NFC07A1 and NUCLEO-L476RG/* USER CODE BEGIN Header */   /**   ******************************************************************************   * @file : main.c   * @brief : Main program body   ******************************************************************************   * @attention   *   * Copyright (c) 2021 STMicroelectronics.   * All rights reserved.   *   * This software is licensed under terms that can be found in the LICENSE file   * in the root directory of this software component.   * If no LICENSE file comes with this software, it is provided AS-IS.   *   ******************************************************************************   */   /* USER CODE END Header */   /* Includes ------------------------------------------------------------------*/   #include "main.h" &n

int main(void){ /* USER CODE BEGIN 1 */ uint8_t nfc_data[32] = {0};   const uint16_t nfc_addr = 0x10; // NFC存储区的起始地�?�   const uint16_t nfc_size = sizeof(nfc_data); // NFC存储区的大�?   char* write_data = "Hello, world!"; // 待写入的字符串   char read_data[32] = {0}; // 读�?�到的字符串   // 将待写入的字符串�?制到nfc_data数组中   strncpy((char*)nfc_data, write_data, sizeof(nfc_data));   // 将nfc_data数组中的字符串写入NFC存储区   NFC07A1_NFCTAG_WriteData(NFC_INSTANCE, nfc_data, nfc_addr, nfc_size);   // 从NFC存储区读�?�数�?�到read_data数组中   NFC07A1_NFCTAG_ReadData(NFC_INSTANCE, (uint8_t*)read_data, nfc_addr, nfc_size);   // 打�?�读�?�到的字符串   printf("Read data: %s\n", read_data);   return 0; /* USER CODE END 1 *//* �?�片机�?置--------------------------------------------------------*//* �?置所有外设，�?始化闪存接�?�和 Systick。*/HAL_Init（）;/* 用户代�?开始�?始化 *//* 用户代�?结�?��?始化 *//* �?置系统时钟 */SystemClock_Config（

我正在使用X-NUCLEO-NFC7A07的软件“x-cube-nfc1�?。�?幸的是，我无法�?�用FTM模�?。我有点困惑，因为NDEF无法接收信�?�，但是我找�?到项目中的具体代�?。Translation to english:I am using the software "x-cube-nfc1" of X-NUCLEO-NFC7A07. Unfortunately, I cannot enable FTM mode. I'm a bit confused because NDEF can't receive the information, but I can't find the specific code in the project.

The NFC hardware chosen is the ST25DV64K. From iOS mobile app, I am trying to read the entire memory block from 0 to 2047. Because of iOS limitation on extendedReadMultipleBlocks, as suggested in your workaround, I am using for loop to run extendedReadSingleBlock by iterating through the address blocks. But it does not read the entire block, and I could see Code=102 "Tag response error / no response" or Code=100 "Tag connection lost" after reading around 1000 blocks. Is there a way to read the entire memory of 2048 blocks.var tmpBuffer:Data = Data.init(repeating: 0x00,count: 1)              var blockNumber:Int = Int(startAddress)                             for index in 0...numberOfItems-1 {              &

Hello, I have an application whereby I need to use one reader IC with 10 antennas. It does not need to read very quickly, once per second or so. What is the best way to do this? Each antenna will be about 1.5" (38mm) spacing in a line. So the length of the farthest antenna is about 15" (380mm) from the IC. Application is like a vending machine. Should I:a) build a antenna multiplexer from relays or RF switches right at the IC?orb) put each relay right next to the antenna?Or is there another way?Read distance is low, about 20mm to a tag approximately 20mm in diameter.Thanks,Derek

Hello.I use the ST25DV-Discovery to test the lower power mode of the ST25DV04K.But I run the demo downloaded from the ST.When I use the low power mode,the current consumption is up to 145uA.In the document of ST,the current consumption is only blow 1uA. How can I do to reduce the current consumption?

Hi, I am quite new to NFC reader, I want to know if it is possible to read multiple TAGs simultaneously with one board?i have ST25R3911B-DISCO board and bunch of 14443A Tag.if it is possible, what is the correct way to do the action??

In the ST25DV data sheet, I read:"Energy harvesting can be set even if ST25DVxxx is in RF disabled or RF Sleep mode, or in Low power mode. In all these cases, ST25DVxxx will deliver power on V_EH pin if RF field is present."However this is not what I am seeing.If energy is being harvested to power the MCU and it sets either RF_DISABLE or RF_SLEEP in RF_MNGT_Dyn via i2c ,the energy harvesting output disappears and the system dies.Is this an error in the data sheet or is there a way to disable/delay enabling RF communications whilst maintaining Energy Harvesting?I suppose that the possibility exists that the phone is switching off the field when RF communications are disabled, but this amounts to the same thing.I want to be able to delay RF communications until the MCU has written the NDEF record to the EEPROM, i.e. I want to power up from harvested energy with RF communications initially disabled.Thanks,Richard

Hello,We are using ST25R3920 with another host MCU(NXP S32K116) in a project. Our customer want us to be able to update the firmwares of modules in the board via host MCU if a new feature or some problem fixes are needed.So my question is, does ST25R3920 support such feature? If yes, does ST provide the new firmware for the module?I looked through the documents related to ST253920 but could not find any information regarding this issue.Thank you and best regards,Furkan

I am trying to use ST3993 to get distance between tag and the reader.Is there any SDK or function in the ST3993 to do that?

How to screening ST25RU3993 for Engineering Sample (ES) in our factory's incoming inspection and where is the ES marking located on its case?Currently in a stop production due to this issue.

I have ST25RU3993s with marking "E". I see a note in rev.11 datasheet mentioned not to used the "E" or "ES" marking for the production board. (1)Is the note still true? (2)If It's released in the field, what kind of failures do I expect?Thanks,-Tieng

The phone has NFC turned on and has recognized the ST25 tag，the STSW-ST25001 app cannot open enable mailbox and cannot achieve Data transfer，FTM

Hello,I'm currently prototyping a custom design utilizing the ST25RU3993 which should be nearly identical to the reference design HPEV. I've removed the external PA and 2nd antenna, but otherwise the design is very similar. I've attached the schematic for comparison. Where available, I've followed the reference layout as closely as possible.The board is showing poor read rates (low distance, ~50% success rate for consistent tag-antenna positions) which I suspect is the result of the following: the RX probe point (equivalently RF-TP4 on the eval kit) shows almost 5dBm at the carrier frequency when measured with the spectrum analyzer. I understand this should be closer to -14dBm.Am I missing something obvious from my design? Or could this be a possible result of an assembly issue? Looking forwards to any insight into the issue or further testing I can perform.Thanks!

I design NFC antenna using ST25TN01K(50pF) chip .This is my first time in RF design. I calculated data with edesignsuit that I shared first photo. Firstly I wonder is my design okay and proper? My design must be small and antenna coil inductance 2.58uH(2nd photo). Both ends of the antenna go directly into the chip.Apart from these, is there anything else I should pay attention to or add? Can you suggest an app or method where I can simulate the nfc antenna and see if it works?

Hello.I have the latest version of Excel and when I open the .xlsm the following message appears: We have found a problem with content..... ¿Do you want to recover.....If I say yes all the formulas are broken. (I have the macros enable and the file is trusted)Any ideas about how to solve this?Thank you in advanceJoaquin.

Hello!We have combined the CR95HF receiving antenna and wireless charging capability on 13.56Mhz. We monitor placed device by user on wireless charging and in this mode we disable attempts to read RFID.When if wireless charge is enable, on ST_R0 is 10.4V.This voltage on ST_R0 is present when reading RFID.This value exceeds the recommended 7V of AN4327, accordingly over 18V maximum differential input voltage between pins RX1 and RX2.This schematic solution have quality of reading RFID tags is normal.My questions:1. It's no damaged problem for CR95HF, if on ST_R0 have 10.4V when RFID card readed ?2. It's no damaged problem for CR95HF, if on ST_R0 have 10.4V when located on wireless charging ?In this state voltage on WRLS_CHRG pin up to 20V.In addition to pin RX, voltage affects on pin TX.3. In the case of where there is an attempt to cycling read RFID, user transferred device to the electromagnetic field of wireless charging. It is possible that the phases of the oscillations of the

Hi!I'm using a x-nucleo-nfc08a1 board on a nucleo-g491re using mbed os, I'm trying to implement support for a tag which requires custom crc and parity on both tx and rx.I'm using the following flags RFAL_TXRX_FLAGS_CRC_TX_MANUAL | RFAL_TXRX_FLAGS_CRC_RX_KEEP | RFAL_TXRX_FLAGS_PAR_RX_KEEP | RFAL_TXRX_FLAGS_PAR_TX_NONE | RFAL_TXRX_FLAGS_CRC_RX_MANUAL with rfalStartTransceive, tx works fine but rx fails with a crc error (rfalNfcDataExchangeGetStatus() returns RFAL_ERR_CRC.rxRcvdLen gets set to 8192 and rxBuf is filled with 0s.I'm using a proxmark3 to debug the nfc communication and the tag responds fine as expected, but RFAL (or the transceiver itself) drops the packet.

Hello, I am testing the st25r95 with the X-nucleo-nfc03a1 attached to a nucleo-g0b1re, I am successfully running the democycle and reading nfc tags. In my application I have a limited amount of flash available (<20 Kb) and also,I only need to detect tags which have the ISO14443A (NFC-A) protocol. To reducethe amount of flash. One thing I have done (as suggested in another post “Howto minimize flash usage�?) is to set in platform.h -> RFAL FEATURESCONFIGURATION -> RFAL_FEATURE_NFCV to false. That indeed reduces the flashusage, but then the communication with the st25r95 stops.With all the functions enable:RFAL_FEATURE_NFCV to false:Only initialization.Can you give some advice about how to properly deactivate the protocols I don’t need?Thank you in advance.

Hi im using the ST25R3911b and the RFAL lib.With what expression can i see the Data on my Tag ?

I used the ST25R3911-DISCO Board GUI and C++ DLL demo to utilized the ISO-DEP function to read from and write to an NFC-B card. How do I go about doing this with the X-nucleo-NFC05A1 on Nucleo 64 using arduino IDE? I need help getting started on writing a function to poll, select card, read and write to that card. Thanks,-E.

HelloI have developped a UHF RFID reader based on ST25RU3993 chip. I'm not really confident about its evolutions in the future. Can you contact me?I manufature and sale UHF RFID modules based on ST25RU3993 chips. I don't see any news about a new chip in the future. Then I'm searching some chips to replace theis one. Do you plan to release a new chip in the near future?

我需�?手机利用NFC Tap读�?�STM35L476�?�片机中的传感器动�?数�?�信�?� 我应该怎么办呢 有相关的编程�?�考�?�？Post edited to add translationI need the mobile phone to use NFC Tap to read the dynamic data information of the sensor in the STM35L476 microcontroller. What should I do? Is there any relevant programming reference?