SAADC nRF52832 SDK15.2 with BLE (SD 132): at what point can initialise the ADC using SoftDevice?

RE: SAADC nRF52832 SDK15.2 with BLE (SD 132): at what point can initialise the ADC using SoftDevice?

Tomasz — Fri, 22 Feb 2019 09:56:59 GMT

I used this Q&A as inspiration:

34702/regarding-nrf-52832-power-consumption-saadc-ppi-timer

and moved all initialisation code to main(), before ble_stack_init();
whilst separating all the the turn on and turn off instructions
for each peripheral to use within ble_evt_handler(..)

This works and device is using only single microamps
in advertising phase, which I find acceptable.

Before that I experienced device reset any time when
trying to initialise ADC or any PPI in ble_evt_handler(..)

This has to be an acceptable solution for now.
Trying to debug and separate offending lines
of code would be beyond my capabilities
and time limits (for now).

Cheers
Tom

RE: SAADC nRF52832 SDK15.2 with BLE (SD 132): at what point can initialise the ADC using SoftDevice?

Jared — Fri, 22 Feb 2019 08:26:17 GMT

Hi,

There shouldn't be an issue using ADC with the Softdevice. We have en example on GitHub that integrates the Softdevice with the ADC, you can find it here. Can you be more specific in describing the problem? What error code is thrown?

Best regards

Jared

RE: SAADC nRF52832 SDK15.2 with BLE (SD 132): at what point can initialise the ADC using SoftDevice?

awneil — Wed, 20 Feb 2019 10:44:14 GMT

Have you tried stepping through your code in the two cases?

Compare & contrast what happens when it works, and what happens when it doesn't ...