Configuring nRF5340 for RF measurements

[arun12]

How to configure nRF5340 for RF measurements. which programs can be flashed to the device to get 100% TX and 100% RX and measure the RF parameters

[runsiv]

Hi, As you can see here it does not make sense to measure both VDD_HV and VDD."

By default, the high voltage regulator is configured to source external components from the VDD pin. To save power this feature must be disabled. For details, see High voltage mode."
Is the device running in HV mode? Also, is this a custom board? I'm not sure that you would gain anything to measure the current consumption since if it is a custom boards you it can be hard to correlate power consumption with RX effect. 

Regards

Runar

[arun12]

Hi Runar,

What did you mean by custom mode I'm using a nRF5340 DK and putting it into modes like advertisement using nRF connect in V S Code. 

So my question here is at that time, which of these rails(VDD & VDD_HV) can give the chips current consumption at these modes.

Regards,

Arun

[runsiv]

Hi 

just so that we are on the same page. You are trying to build the peripheral_lbs sample now? 

Could you update the toolchain so it aligns with the SDK version, do a pristine build and if it fails, post the log output. Just copy paste the log from the terminal and go back here, insert -> code and past it

Regards

Runar

[arun12]

yes I'm trying to build peripheral_lbs sample.

there is no toolchain of v2.5.2 available, I tried downloading tool chain v2.4.3 but it is failing to update.

what do you mean by printine build?

to create the project again? 

Reagrds,

Arun

[runsiv]

That sounds very strange. You should be able to see multiple newer toolchain versions then 2.4.3, could you post the error message you get?

 

If you select the round arrow you do a pristine build and rebuild the entire project, however it is not worth doing until the toolchain and sdk version is aligned. 

Regards

Runar

[runsiv]

I'm a bit unsure of what you mean. if you want to measure the current draw of the DK you should follow the guide so your setup is correct. Since the DK has a extra circuits outside the nrf5340 you need to have the correct setup so you don't measure the current draw of the whole DK. As for numbers, you could for example compare your numbers to the online power profiler tool 

Regards

Runar

[arun12]

Hi Runar,

Other than measuring the current consumption using Online power profile tool, is there anyway I can measure the current consumed by nRF5340 at these states?

The tool chain issue is solved on setting " set default toolchain". 

can you also guide me in achieving the below states?

1, sleep

2, BLE Advertisement

3, BLE Scan

4,BLE Connected 

5,active TX and RX

Regards,

Arun

[runsiv]

Good to hear that is fixed

I don't think we have a samples that covers all that you are asking for. But we do have a BLE power profiling sample

If you have more questions regarding optimizing for current I would suggest to create a new ticket as we try to keep it to one topic for each thread

Regards

Runar

[arun12]

I'm not asking one example to execute all these states but all the examples that can put the device in these states.

Regards,

Arun

[runsiv]

We don't have any list of which examples enters the different states. I would recommend to either use the mentioned sample as it is made for power profiling or create a sample that suits your needs. If I misunderstood you, please try to reword the question. 

Regards

Runar

[arun12]

To use power profile, we need the power profile kit hardware right?

Regards,

Arun

[runsiv]

As written in the link:

"

Optionally, you can use the Power Profiler Kit II (PPK2) for power profiling and optimizing your configuration. You can use also your proprietary solution for measuring the power consumption."

Regards

Runar