Power profiler Kit - ble_App_Beacon - Current

[Omnia]

Hello,

I am following the PPK Get started get started of the PPK board.

I am developing on the NRF52-DK (Rev 1.1.0 2017.23) - nrf52832
My SDK is the nRF5_SDK_15.0.0_a53641a
MU nrf connect is the V2.3.0 (same as the video)

I flashed a fresh and untouched BLE_app_beacon (PC10040 - S132)  app on the board, like the one used in the video.

My issue is that I have a current consumption difference between the video and my power profiler app.

On the video, they got an average of 236 uA

But on mine I got an average of 669 uA

Do you have any idea of what could explain this difference ?
Did they do some optimization on the BLE_app_Beacon source code ?

[MartinBL]

Hi,

I see the same thing. It seems like the Logger module is leaving the clock running. If you disable the logger the average current sinks to ~170uA. 

[Omnia]

Hi,

Thanks for your answer,

Does it the only explanation? I don't know if you are able to know it but does the project running on the video has removed this logger module too to get this current average? (as 170ua is also different that 250uA)

Just want to make sure that there's not something fishy and to base my next study on a stable base.

Thanks

[MartinBL]

I'm not sure what SDK or IC he is using, but in the youtube video he is talking about a blinking LED and you can see the effect of that in your screenshot above. 

In my tests I used SDK 15 too, and while the LED still blinks the effect on the current is gone. It could be a matter of how the timers are implemented

[Omnia]

Yes you 're right nice catch! Then I guess not quite the same code source.

I am going to examine it deeper.

Thanks for your help and advice.