How to set nRF52840 to sleep and deep sleep for Zephir and Arduino?

RE: How to set nRF52840 to sleep and deep sleep for Zephir and Arduino?

Claudio Rosa — Wed, 02 Oct 2024 09:09:35 GMT

Thank by your support.

Have a nice day.

Regards,

Claudio

RE: How to set nRF52840 to sleep and deep sleep for Zephir and Arduino?

Kazi Afroza Sultana — Wed, 02 Oct 2024 08:47:58 GMT

Hello Claudio,

I showed you the sample of system off mode https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/boards/nordic/system_off which can be used for reference on how to put the nRF52 into the lowest possible sleep mode.

RE: How to set nRF52840 to sleep and deep sleep for Zephir and Arduino?

Claudio Rosa — Fri, 27 Sep 2024 18:48:46 GMT

Hi Kazi,

The system off is one of last options because I will lost all data, for example in the GNSS sensor and GNSS Almanaque send until 12 minutes to be created.

When I say sleep I mean "reduce the power consumption" (go back with a warm process) and "deep sleep" (go back with a cold start) is "reduce as much as possible the power consumption,no matter if it will take more time to be ready.

Any documetation about it, I mean "sleep" and "deep sleep" guide lines for nRF52840 and their sensors?

Regards,

Claudio

RE: How to set nRF52840 to sleep and deep sleep for Zephir and Arduino?

Kazi Afroza Sultana — Fri, 27 Sep 2024 15:46:35 GMT

Hello,

Current consumption is a bit tricky as it depends on the peripherals and also devices of the board, other devices may need something different. The component of the nRF devices need to be in a state where they do not consume power; for example: disabling UART or some peripherals whose are not in use. You can look at this device power management Device Power Management (nordicsemi.com) document.

If you want to use system off mode, you can look at these samples https://docs.nordicsemi.com/bundle/ncs-latest/page/zephyr/samples/boards/nrf/system_off/README.html , zephyr/samples/boards/nordic/system_off at main · zephyrproject-rtos/zephyr · GitHub