| .. _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 |
| ============= |
| |
| This sample can also can demonstrate RAM retention. By selecting |
| ``CONFIG_APP_USE_NRF_RETENTION=y`` or ``CONFIG_APP_USE_RETAINED_MEM=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. |
| RAM is configured to keep the containing section powered while in system-off mode. |
| |
| Requirements |
| ************ |
| |
| This application uses nRF51 DK, nRF52 DK or nRF54L15 PDK board for the demo. |
| |
| Sample Output |
| ============= |
| |
| nRF52 core output |
| ----------------- |
| |
| .. code-block:: console |
| |
| *** Booting Zephyr OS build v2.3.0-rc1-204-g5f2eb85f728d *** |
| |
| nrf52dk system off demo |
| Entering system off; press sw0 to restart |
