low power consumption

RE: low power consumption

Simonr — Fri, 15 Feb 2019 09:11:59 GMT

For explanation on the LFCLK and RTC, please refer to our Documentation Library, as it is more thorough than I can be here. As for sample code, we do not have any specific examples of what you want to do. But see our temperature example in SDK15.2\examples\peripheral\temperature and try to work with that to create a function that interrupts sleep either when temperature sensor data exceeds your threshold, or interrupts sleep on a set interval with a timer. (The timer option will likely consume the least amount of power)

This thread might be relevant.

Best regards,

Simon

RE: low power consumption

ps_anu — Fri, 15 Feb 2019 07:22:27 GMT

threshold value mean when it reaches particular temperature value here i am using temperature sensor

RE: low power consumption

ps_anu — Fri, 15 Feb 2019 07:20:41 GMT

as per you said For the nRF to wake up by itself you need system ON mode, with RTC and the LF clock on at the very least .

fine how to do that any sample code and explain me about lf clock and rtc

RE: low power consumption

Simonr — Thu, 14 Feb 2019 12:20:50 GMT

If you mean for the chiip to be in system OFF mode, it needs to be waken up by an external signal. What do you mean by the "threshold value". For the nRF to wake up by itself you need system ON mode, with RTC and the LF clock on at the very least. This is also what the SoftDevice uses when it initializes so there is no extra consumption by letting it run either. The current consumption for this would be 2-3uA, depending on RAM retention. You should figure out how much RAM you need in order to optimise your current consumption.

Best regards,

Simon

RE: low power consumption

ps_anu — Thu, 14 Feb 2019 11:08:29 GMT

yes , is it possible to put completely in deep sleep mode and wake up it by using threshold value

RE: low power consumption

Simonr — Thu, 14 Feb 2019 10:34:36 GMT

This post explains just about everything there is to know about current consumption reduction. Also make sure you are not in debug mode. How to exit debug mode is explained thoroughly here.

Best regards,

Simon