NFCのトピックIssue simultaneous communication with NTAG5-Link using both NFC and I2C

Issue simultaneous communication with NTAG5-Link using both NFC and I2C

poolbear — Mon, 18 Mar 2024 17:46:46 GMT

So I am doing i2c-based communication between the mke14-based board and the ntag5 link, but the issue is that when I am connecting the nfc tag with my controller through i2c and giving vcc from the board at that time, I am unable to read the tag using my nfc-based phone. (FYI:I still have not changed any session or configuration register values.) Can anyone have any idea what the issue is, or do I need to change any session or config register values to do this?

Re: Issue simultaneous communication with NTAG5-Link using both NFC and I2C

Fabian_R — Wed, 20 Mar 2024 01:00:30 GMT

Hello,

Thank you for your interest in our products

I would like to understand a little more about your setup, are you trying to access both interfaces (I2C and NFC) at the same time? Please keep in mind that this isn't possible, please take a look at AN12364 where it deepens into this feature. It is possible to mirror the memory into the SRAM or, to configure the NTAG 5 in pass-through mode.