We're using SAADC to monitor two different voltage rails in different combinations (sometimes one and sometimes both).
I'm experiencing an issue in the following scenario: Firmware is monitoring two channels and repeatedly measuring values using non-blocking calls to SAADC using a timer and PPI. It then uninits both channels and the SAADC component. Our system then initializes a single channel and grabs a value using nrfx_saadc_sample. The first value grabbed is a stale value from the previous continuous sampling of two channels. After this first incorrect reading, subsequent single channel samples are correct.
I thought this might be due to not calling nrfx_saadc_buffer_convert before grabbing this single channel sample, but adding this call does not make a difference. This behavior is also consistent regardless of the delay between continuous sampling and the single sample.
Does this issue sound similar to anything that has been encountered?
