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NTAG I2C Plus giving NACK over i2c

Question asked by Tarun Panchal on Aug 30, 2017
Latest reply on Sep 10, 2017 by Kai Buechler

I am working on  NTAG I2C. plus 2k version

I  Could read/ write to the NFC chip through the host microcontroller and a NFC device.

Now all of sudden the I can neither read nor write into the NFC chip through I2C from the host MCU, but I can read/ write NDEF mesages through my mobile phone (NFC device). I can also read registers using the NXP Android app.

 

I check the I2C pin, everything is correct.

 

Can someone please tell me whats going on here?

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