I'm trying to use the NT3H2211 to write a dynamic UUID to the EEPROM of the NT3H2211 using an Arduino so that it can be read over NFC using a smartphone. Somehow whenever I communicate with the NT3H over i2c the NFC stops working. The NTAG i2c Demo reports the memory as "Locked" and TagWriter also returns an error. As soon as I stop communicating over i2c and restart the device I can read the (unchanged) content again.
Is there any documentation or example code that could help me implement my use case? What I want to do is write a simple NDEF record to the NFC chip over I2C using an Arduino. I have already tried using a library like GitHub - ameltech/sme-nt3h1x01-library: Library for SmartEverything NT3H1X01 Near Field Communication chip. but only the device id reading worked. I had no success writing an NDEF record.
Thanks for your help!