GPIO/PPI for analog pin

[gaminn]

Hi,

can I use a pin with A/D converter (or comparator) and at the same time read its logic value using GPIO and configure it to be event source in PPI?

Thanks

[Simon]

I don't think this is possible

• https://devzone.nordicsemi.com/f/nordic-q-a/16481/internal-pull-down-resistor-in-adc-mode
• https://devzone.nordicsemi.com/f/nordic-q-a/21732/nrf52840-input-circuit-question

Have you tested it yourself?

Best regards,

Simon

[gaminn]

Tested and it is not possible. Please see pin input circuit in GPIO section of reference manual. There is ANAEN signal that disconnects digital part of circuit when analog function is enabled. At least this is how I understand that.