How to configure GPO pin with RF_ACTIVITY interrupt? X-NUCLEO-NFC04A1

[lcopparoni]

Hello,

I'm facing several problems in trying to correctly configure the GPO register and read the GPO pin. My application is to write I2C data to the tag and, to avoid collisions with the reader, use the GPO pin to avoid I2C writes when an RF reading operation is in progress.

I was able to set the GPO register to 0x02, which should be the correct value for RF_ACTIVITY interrupt as per datasheet, but anytime I try to read the GPO status pin I get a 1 value which does never change.

Can someone please help me?

Thank you in advance

[JL. Lebon]

Hello,

Please see my answer in https://community.st.com/s/question/0D53W00001Kzc98SAB/how-to-correctly-enable-gpo-interrupts-on-xnucleonfc04a1?t=1643703067517 which is a duplicate of this question.

best regards.