question about the power consumption of nRF52832 in BT connected and advertising mode

[PYC]

the power consumption is about 6.12mW in BT connected, and consumption is about 7.75mW in advertising mode.

is it normal or has possibility to reduce it to extend the battery life?

thanks in advance.

[awneil]

It will depend very much on your settings - connection interval, advertising interval, etc ...

you can explore it with the online Power Profiler:

https://devzone.nordicsemi.com/nordic/power/w/opp

[PYC]

https://devzone.nordicsemi.com/nordic/power/w/opp/2/online-power-profiler-for-ble

excuse me, here is result by our setting, may you review it to see there is any setitng could improve the power consumption?

Thanks.

[awneil]

PYC said:

may i have your suggestion to modify the parameter to extend the battery life?

Go on - in the online tool, you can just adjust the settings, and see what differences they make!

It's just a simple matter of moving the sliders, and clicking the buttons:

Once you've got a feel for what difference those settings make, you can think about how they impact on your applications performance.

As always, it's going to be a trade-off between performance & power consumption - only you know how that's going to fit with your applications requirements.

[PYC]

Here is the quesiton on EE design, there is one crystal of 32Mhz on EVM board, could we save it, and disable it by internal setting? what is the impact if save the external crystal?

thanks.

[Stian Røed Hafskjold]

You need an external 32MHz crystal to run the radio peripheral.

[PYC]

use external 32MHz crystal could be lower power consumption than use internal, is it correct?thanks.

[awneil]

it's not an option - as Stian Røed Hafskjold said, you need it for the radio to work.