RE: SAADC vs ADC

Karl Ylvisaker — Fri, 04 Feb 2022 08:34:34 GMT

Hello,

[quote user=""]Are they for different peripherals?[/quote]

Yes, and the differentiation here is made with the HAS_HW_NRF_ADC or HAS_HW_NRF_SAADC defines for the respective SoC.

[quote user=""]I am using nrf52 so I presume I should use SAADC. Could you elaborate a little bit on this?[/quote]

Correct - if you go into \v1.8.0\zephyr\dts\arm\nordic\YOUR_SOC you will see which peripherals it has got, and which drivers are compatible with that peripheral. For the nRF52840 for example, it has:

..
    compatible = "nordic,nrf-saadc";
..

While if you check an older nrf device, such as the nrf51822 it will have this instead:

..
    compatible = "nordic,nrf-adc";
..

Best regards,
Karl