RE: SAADC sample value range on nRF52 dev kit

Tim — Fri, 22 Nov 2019 06:33:52 GMT

Thanks Jared. I mistakenly had the analog input configured for internal pull-up resistor. Change to:

nrf_gpio_cfg_input(PHOTOTRANSISTOR_ANALOG_PIN,NRF_GPIO_PIN_NOPULL);

Now I'm getting correct analog values.

Tim

RE: SAADC sample value range on nRF52 dev kit

Jared — Wed, 20 Nov 2019 15:13:10 GMT

Hi,

The value that you get is dependent on the specific ADC that you're using. You can therefore expect to get a different value when you use the nRF. However, you should have a value that varies accordingly to what is connected to the SAADC input so something is not correct. The code that you posted seems correct, so i'm guessing that you're not using the correct pin. See this case.

regards

Jared