nRF91 sleep current high

RE: nRF91 sleep current high

Petri1 — Sat, 01 Feb 2025 11:16:50 GMT

Hello,
I did get the SMS example to sleep with ~700µA current with just k_sleep.
I can probably make it consume less with disabling serial port etc.

-Petri

RE: nRF91 sleep current high

Petri1 — Wed, 29 Jan 2025 16:45:32 GMT

Thanks for the link.

I used the UDP example from the link and I got ~3µA.
I'm not looking to use UDPs in this case but SMSs instead.

When I modified the UDP example to send SMS, the sleep current was again several milliamps. I probably missed some change in the prj.conf.

Does the PSM work with SMS? Could you provide required changes to the SMS example to make it sleep with k_sleep or similar? Alternatively could you help me with required changes to the UDP example to make it send SMSs instead of UDPs and still sleep properly?

Thank you

Petri

RE: nRF91 sleep current high

Asbjørn — Tue, 28 Jan 2025 10:28:31 GMT

Hi,

I think you'd see some value in running the guide here and getting a benchmark: Getting started with current measurements on the nRF9160

You should see something in the order of a few uA from the examples there and the methods could be incorporated into your code.

Best regards

Asbjørn