ST25 NFC/RFID tags and readers

Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.

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Resolved! Proper way to build a library for another platform

Hi,I want to build a library for rfal and ndef from https://www.st.com/en/nfc/st25r3916b.html and use it with nRF connect SDK https://www.nordicsemi.com/Products/Development-software/nRF-Connect-SDKWhat is the proper way to build a static library? Th...

Resolved! ST25 NFC Tap app issue on Android Version 14

We are testing the app on a newer mobile and encountered this issue:Calling this function will cause the application to crash:mFtmCommands = new FtmCommands(mST25DVTag);The problem is in this procedure:private void setMaxTransmissionSize() { if (t...

JHave.1 by Associate II
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  • 2 replies
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Resolved! ST25DV How to write EH_MODE register?

Hi, I have a suctom board with st25dv schip and i want to use EH for powering it. By default, EH_MODE is ON_DEMAND and I want to change it to ST25DV_EH_ACTIVE_AFTER_BOOT like as at on the devkit, but after writing using SMARTAG1_NFCTAG_WriteEHMode(SM...

MXliv.1 by Associate
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  • 2 replies
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Resolved! NFC energy harvesting circuit configuration

Hello:I am using the ST25 Dynamic NFC for energy harvesting applications in its batterless mode. I think there is a power management unit in the circuit but without energy storage such as a capacitor, is that right? If so, I need to add an external c...

FWang.2 by Associate
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  • 5 replies
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Resolved! Aspice

Hello,We are using ST25R3920B as NFC reader for our project. In order to implement the functionality we integrated the nfc RFAL driver provided from ST. We need to develop the software with respect to ASPICE guidelines. I would like to ask whether th...

Resolved! NFC Antenna's Waves were not fluently

Hi  Supporters:    I used the St25r3911b IC to design NFC Module. Then, the new module could work.    However, the waves at the Antenna side are not well, please check the picture at the end.    I think maybe the matching circuit parameters do not ma...

Antenna Waves.jpg

Resolved! How can I write data to the mailbox via the iOS App?

After the last update the app is not crashing anymore, But how can I write data to it via the App.   All toggles are not clickable. And the code example of the MX_NFC7_Process this function is completely empty. I realized to read the status by copyi...

IMG_9F780B835FBA-1.jpeg
CWies.1 by Associate III
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