nRF52 SAADC re-initialize

RE: nRF52 SAADC re-initialize

DK999 — Thu, 06 Oct 2016 20:08:22 GMT

Silly me, I'm using 8x oversampling and don't start the measurement 8 times, so the Interrupt won't occur unless I start the measurement 8 times too. Thanks for the hint :)

RE: nRF52 SAADC re-initialize

RichieJH — Thu, 06 Oct 2016 19:33:49 GMT

These are mine

/* SAADC */
#define SAADC_ENABLED 1

#if (SAADC_ENABLED == 1)
#define SAADC_CONFIG_RESOLUTION      NRF_SAADC_RESOLUTION_10BIT
#define SAADC_CONFIG_OVERSAMPLE      NRF_SAADC_OVERSAMPLE_DISABLED
#define SAADC_CONFIG_IRQ_PRIORITY    APP_IRQ_PRIORITY_LOW
#endif

RE: nRF52 SAADC re-initialize

DK999 — Thu, 06 Oct 2016 19:08:49 GMT

Compiled with DEBUG, but the Error-Handler puts nothing into my RTT Viewer. I've commented every non related functioncall, just the BLE and ADC Stuff is called in my project right now with the same behaviour.

I've included some Error-Messages by myself, it shows that it crashes when I execute the Channel-Init nrf_drv_saadc_channel_init(0, &channel_config); 2nd time. I've put Segger-Output into the callback itself, but I don't get any messages from the callback whatsoever. Seems like the callback is never called at all...

EDIT: Without deactivating I'm getting a Callback but just every 8th or 9th measurement. My SAADC settings are as follows:

#define SAADC_ENABLED 1

#if (SAADC_ENABLED == 1)
#define SAADC_CONFIG_RESOLUTION      NRF_SAADC_RESOLUTION_8BIT		// NORMALLY 10BIT
#define SAADC_CONFIG_OVERSAMPLE      NRF_SAADC_OVERSAMPLE_8X //NRF_SAADC_OVERSAMPLE_DISABLED
#define SAADC_CONFIG_IRQ_PRIORITY    APP_IRQ_PRIORITY_LOW
#endif

RE: nRF52 SAADC re-initialize

RichieJH — Thu, 06 Oct 2016 17:29:33 GMT

The way you do it is the way I do it and it works fine for me. What are you getting back in your error codes?