timer in low power mode.

RE: timer in low power mode.

Stefan Birnir Sverrisson — Mon, 02 Feb 2015 09:14:02 GMT

There are simple low power examples available on Nordic's Github page, both for System On and System Off, that show how to put the device to sleep and wake it up by pressing buttons.

I think you can read about how this actually works by looking at the current consumption guide and the low frequency clock model and perhaps the high frequency clock model. In the current consumption guide, specifically look at the "Low power mode with BLE softdevice" section

RE: timer in low power mode.

DevineFelix — Mon, 02 Feb 2015 03:32:39 GMT

hi.when only LF clock runs, there is no peripheral running? then how can i wake the system up using GPIO? Can you give me an example or an introduction in detail about this, if there has been a post about this ? thank you .

RE: timer in low power mode.

Krzysztof Chruscinski — Fri, 30 Jan 2015 08:23:04 GMT

Hi, there is no option to have clock (RTC) running in system off, however in system on nRF51 will try to enter lowest possible mode. If there is no peripheral that requests HF clock then only LF clock will run. You can use RTC1 for that (RTC0 is used by SoftDevice).