Internal Pull down resistor in ADC mode

[Rushd]

Hello, Can we enable the internal pulldown resistor with GPIO pin enabled as an ADC input for nrf51822?

Thanks.

[Stefan Birnir Sverrisson]

Hi

A gpio pin is either configured as general GPIO or as AIN pin to use for ADC/LPCOMP. You can not mix those two. It is however possible to reconfigure a pin at runtime to work as GPIO or AIN pin, but you cant have both at the same time.

[Rushd]

Thanks Stefan. Actually I was able to configure the internal pull down resistor while pin is in ADC mode. The pulldown resistor is actually drawing current while ADC is sampling. Thanks again.