NRF_UICR->CUSTOMER REGISTER MODIFY AFTER SOFTDEVICE initialization

RE: NRF_UICR->CUSTOMER REGISTER MODIFY AFTER SOFTDEVICE initialization

Einar Thorsrud — Fri, 22 Jun 2018 07:58:34 GMT

Most of the SDK 15 examples use the SoftDevice Handler. In that case, you can (request to) disable the SoftDevice by calling nrf_sdh_disable_request().

RE: NRF_UICR->CUSTOMER REGISTER MODIFY AFTER SOFTDEVICE initialization

HANK — Fri, 22 Jun 2018 02:47:59 GMT

HI Einar Thorsrud,

I get a same problem and I am using nRF52840 (SDK 15).

Could you tell me how to disable the SoftDevice on SDK 15 ?

Please description step by step for SDK 15.

I couldn't find solution Currently.

How can i disable the Softdevice for writing UICR-> CUSTOMER[0] ?

RE: NRF_UICR->CUSTOMER REGISTER MODIFY AFTER SOFTDEVICE initialization

Einar Thorsrud — Tue, 08 May 2018 12:17:12 GMT

Hi,

The UICR is protected by the SoftDevice, and the SoftDevice does not allow the application to write to the UICR. There are only two ways around this that I can think of:

Simple and less elegant: Disable the SoftDevice, write to the UICR and re-enable the SoftDevice.
More complex but you can maintain a BLE connection: Use the Timeslot API to obtain a long timeslot. Within the timeslot you can disable the memory protection unit (MPU), write to the UICR and re-enable the MPU before the end of the timeslot.