I have the NFC grove 1.1. It is working in terms of reading / writing.
Now, I am trying to implement the Interrupt function, can someone please help me.
Board: Arduino Yun
Communication with Grove: HSU via digital pin 10 and 11
Interrupt: I physically connected a wire from IRQ pin in the grove to digital pin 2.
Code: I followed the tutorial from NFC shield ([https://wiki.seeedstudio.com/NFC_Shield_V2.0/#example-3-how-to-use-the-interrupt-pin-example-2-revisited])
However, there is no change on the IRQ pin. I also measured it with oscilloscope.
Any idea on how to use the IRQ?