Minimising power consumption when using mynewt on the nRF52 DK

RE: Minimising power consumption when using mynewt on the nRF52 DK

Stian Røed Hafskjold — Mon, 16 Jul 2018 13:21:42 GMT

Sorry for the late reply. Håkon is currently on vacation. There's no central register which would tell you which peripherals are on. You need to check the ENABLE register in each peripheral. If the OS is running a TIMER, I think this would explain the current consumption. UART for logging would also give about the same current consumption.

RE: Minimising power consumption when using mynewt on the nRF52 DK

amrbekhit — Fri, 06 Jul 2018 11:50:08 GMT

Hi Hakon,

Thanks for your reply - I have sent a message to the mynewt community - perhaps they can shed light on this.

Is there any way for me to check what peripherals are currently powered? Are there any central registers which would help me identify what's currently turned on?

Thanks,

Amr

RE: Minimising power consumption when using mynewt on the nRF52 DK

Håkon Alseth — Fri, 06 Jul 2018 11:05:02 GMT

Hi,

It sounds like there's a peripheral running in the background that is requiring the 16M clock tree, given the current consumption that you see. If you have turned off the TIMER (not to be confused with the RTC, which is low-power) and the UART, there must be something else drawing this amount of current.

I do not have much experience with mynewt, so I recommend that you check with their community: https://mynewt.apache.org/community/

Best regards,

Håkon