SPI CS pin on nfc pin.

[abelREK]

 How to config NFC as GPIO on NRF5340? 

I am trying to get SPI working but the cs pins is on P0.02/NFC1.

I believe this is because the gpio is not configured correctly. Here is a screenshot of my device tree. 

Are there better instructions for doing this. 

[Priyanka]

Hi Abel,

Since you are trying to use the P0.02 which is a NFC pin by default, you need to disable NFC and enable GPIOs by setting the CONFIG_NFCT_PINS_AS_GPIOS to y in your prj.conf file. 

Please take a look at the documentation: https://docs.nordicsemi.com/bundle/ug_nrf5340_dk/page/UG/dk/hw_nfc_if.html#d47e121:~:text=at%20every%20reset.-,Configuring%20NFC%20pins%20as%20GPIOs,-The%20NFC%20pins 

Regards,

Priyanka

[abelREK]

Thanks for the quick response. I was able to find the answer in the documentation. 

The config is deprecated. Instead add the following to the device tree. 

&uicr { nfct-pins-as-gpios; };