RE: Current consumption of external flash in Matter application

AHaug — Fri, 04 Jul 2025 13:01:57 GMT

Hello,

I've picked up the case and will be looking closer into it. I will hopefully get back to you with a more constructive answer during the coming week, but keep me updated nonetheless w.r.t your further investigation

Kind regards,
Andreas

RE: Current consumption of external flash in Matter application

Michael Hunold — Fri, 04 Jul 2025 12:19:27 GMT

I now found ~/ncs/v3.0.2/modules/lib/matter/src/platform/nrfconnect/ExternalFlashManager.h which contains a call to pm_device_action_run().

This code is only enabled when CONFIG_NORDIC_QSPI_NOR is set, which was not the case in my project.

I now modified the code that it is enabled and that it uses DEVICE_DT_GET(DT_CHOSEN(nordic_pm_ext_flash));

The project compiles and runs fine, however, there is no change in the current consumption. Of course it could be the case that this code is never called.

I will investigate further, but any comments regarding this topic are highly appreciated.