LPN power profile

RE: LPN power profile

Simonr — Fri, 10 Jan 2020 13:02:56 GMT

Hi Joseph

I was testing on an nRF52840, where these spikes were almost unnoticeable for some reason. When testing on an nRF52832 myself I was able to recreate what you're seeing as well. I haven't been able to figure out what these current spikes are as of yet though, so I have now contacted the development team, and they should be able to explain what this is. Please be patient, as it will likely take a few days before we hear from them.

Best regards,

Simon

NOTE: I don't think it is a radio event, seeing as the spike on the nRF52840 test is too low to be the radio.

RE: LPN power profile

jowei — Thu, 09 Jan 2020 13:38:20 GMT

Hi simon:

I am using LPN example of mesh-sdk-4.0 + sdk16, no any modification

so in sdk_config.h, NRF_SDH_CLOCK_LF_SRC=1, NRF_SDH_CLOCK_LF_ACCURACY = 7

My PPK is using DK's power.

Do you provision your LPN and disconnect mobile APP to LPN? And don't establishing friendship.

Joseph

RE: LPN power profile

Simonr — Thu, 09 Jan 2020 12:53:00 GMT

Do you know what LF clock source you are using? If you're using the internal LFRC oscillator, this seems likely as I don't see these 10-second spikes when measuring here on my end.

Best regards,

Simon