RE: nrfx_saadc_uninit() do not work when use SAADC's differential mode with SDK17.0.2, nrf52832, using NRFX_SAADC_API_V2

ovrebekk — Tue, 24 Aug 2021 06:35:41 GMT

I am not sure how well it works to uninitialize the driver in the callback function, and if you do it in the for loop you will try to uninitialize the driver before the first operation is even complete.

Could you try to set a flag in the callback function that signals that the ADC operation is complete, and check this flag in the for loop before you uninitialize the ADC?

Something like this:

// Declare flag
static volatile bool adc_operation_completed = false;

// At the end of the adc callback
adc_operation_completed = true;

// Inside the for loop
if(adc_operation_completed)
{
    adc_operation_completed = false;
    stop_sample();
}

Alternatively you can schedule the call to stop_sample() from the adc callback by using the app_scheduler, so that the uninit function will not be run from interrupt context.

Best regards
Torbjørn