zephyr

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Gerard Marull-Paretas 577fd949c2 samples: boards: nrf: system_off: update readme - Remove obsolete information - Remove redundant details, e.g. how to flash - Adjust output Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>		2023-09-14 13:50:13 +02:00
..
src	samples: boards: nrf: system_off: suspend console	2023-09-14 13:50:13 +02:00
CMakeLists.txt	…
Kconfig	samples: boards: nrf: system_off: add missing dependency	2023-09-14 13:50:13 +02:00
README.rst	samples: boards: nrf: system_off: update readme	2023-09-14 13:50:13 +02:00
prj.conf	samples: boards: nrf: system_off: suspend console	2023-09-14 13:50:13 +02:00
sample.yaml	…

README.rst

.. _nrf-system-off-sample:

nRF5x System Off demo
#####################

Overview
********

This sample can be used for basic power measurement and as an example of
deep sleep on Nordic platforms.

RAM Retention
=============

On nRF52 platforms this also can demonstrate RAM retention.  By selecting
``CONFIG_APP_RETENTION=y`` state related to number of boots, number of times
system off was entered, and total uptime since initial power-on are retained
in a checksummed data structure.  The POWER peripheral is configured to keep
the containing RAM section powered while in system-off mode.

Requirements
************

This application uses nRF51 DK or nRF52 DK board for the demo.

Sample Output
=============

nRF52 core output
-----------------

.. code-block:: console

   *** Booting Zephyr OS build v2.3.0-rc1-204-g5f2eb85f728d  ***

   nrf52dk_nrf52832 system off demo
   Entering system off; press sw0 to restart