How to see BLE Radio TX only and RX only current numbers

[Sridhar Jonnavittula]

Hi,

We are using nRF52840 DK with PPK stacked on top of it. We flashed BLE power profiling application, connectable advertising and observing graph on PPK.

Please answer below doubts

1. In that graph from where to where I should mark to get radio TX only and RX only current consumption.

2. Can we use PPK to publish the obtained numbers?

Thanks,

Sridhar

[awneil]

You might try looking at this to get a feel for what the power profiles look like:

https://devzone.nordicsemi.com/power/

[Sridhar Jonnavittula]

Yes we were aware of the online power profiler. But what nRF connect for PPK depicted is different from the online profiler right. So we cannot depict exactly(Radio TX, Radio RX) in nRF connect application. Can you please explain us by comparing both graphs?

[awneil]

So how about posting some examples of what you are seeing ?

[Sridhar Jonnavittula]

Suppose if in these below snapshots for advertising

PPK

Online_PPK

How to exactly get the TX, RX currents in PPK by comparing it to online PPK figure?

From which point to point we have to select in PPK for Radio TX, RX currents.

That's where we are confusing.

[Edvin]

Have you cut SB9 on your DK before doing the measurements? I don't think you actually have 80mA current peaks.

Also, can you try to update the power profiler app?

It should say update next to the Power Profiler app.

Does that make a difference? Remember to check if SB9 is cut. Or are you using a custom PCB?

Also, in what positions are your switches on the PPK? SW2, SW4 and SW3?

Best regards,

Edvin