Power Consumption

RE: Power Consumption

Susheel Nuguru — Wed, 19 Feb 2020 11:45:03 GMT

You probably can do this with a voltmeter if you program an app_timer to wake the chip every 1s and in the timer callback you can execute the encryption algorithm and make the chip go back to deep sleep. If you measure the average power consumption here Y uA.

When you get an average current in the voltmeter, you need to substract few X uA (which are consumed by CPU/peripherals ramp up current till it configures the RTC).

The value of X can be obtained if you test the power consumption of the same application above but removing your encryption algorithm that is called every 1 second.

(Y - X) gives the average power consumption of your encryption algorithm.

RE: Power Consumption

Sai Kiran — Wed, 19 Feb 2020 07:56:28 GMT

Thanks for the information. I do not have nRF Power Profiler Kit with me. Is there any other way this can be done?

RE: Power Consumption

Susheel Nuguru — Wed, 19 Feb 2020 06:47:54 GMT

If you have nRF Power Profiler Kit. You can make and application that goes to sleep just after your encryption algorithm is finished. If no other peripheral is running in the background while sleeping then the power profiler will show you how much power was required to process your encryption algorithm.