NRF_FAULT_ID_APP_MEMACC occurs after Soft Reset when SD was running

[Remo]

Hi all

I use the nRF52832 and the SoftDevice S132 V2.0.1. When I perform a soft reset (NVIC_SystemReset) while the SoftDevice is running, the fault handler is triggered with the ID = NRF_FAULT_ID_APP_MEMACC. The same sequence on the nRF51822 with S130 V2.0.1 works fine.

If I disable the SoftDevice before the soft reset by calling sd_softdevice_disable() the fault handler is not triggered. Is this a bug in the S132 or has the behavior changed so that the SoftDevice must be disabled before the soft reset?

Kind regards

[Remo]

Hi Petter

I've found the error when I tried to compose a sample project to reproduce this issue. My mistake was that I wrote the retention register (NRF_POWER->GPREGRET) when the SoftDevice was enabled. This was the reason for the fault and not the soft reset.

Sorry for bothering you and thanks for your help!

[Petter Myhre]

Np :) Thanks for adding the answer.