mirror of
https://github.com/zephyrproject-rtos/zephyr
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7a15afc1d4
Replace DT_FLASH_DEV_NAME with DT_CHOSEN_ZEPHYR_FLASH_CONTROLLER_LABEL.
We now set zephyr,flash-controller in the chosen node of the device
tree to the flash controller device.
NOTE: For a SoCs with on die flash, this points to the controller and
not the 'soc-nv-flash' node. Typically the controller is the
parent of the 'soc-nv-flash' node).
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
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| .. | ||
| src | ||
| CMakeLists.txt | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. _nvs-sample: NVS: Non-Volatile Storage ######################### Overview ******** This is a simple application demonstrating use of the NVS module for non-volatile (flash) storage. In this application, a counter is incremented on every reboot and stored in flash, the application reboots, and the reboot counter data is retrieved. Requirements ************ * A board with flash support Building and Running ******************** This sample can be found under :zephyr_file:`samples/subsys/nvs` in the Zephyr tree. The sample can be build for several platforms, the following commands build the application for the nrf51dk_nrf51422 board. .. zephyr-app-commands:: :zephyr-app: samples/subsys/nvs :board: nrf51dk_nrf51422 :goals: build flash :compact: After flashing the image to the board the output on the console shows the reboot counter and the boards reboots several times to show the reboot counter is incremented. Sample Output ============= .. code-block:: console ***** Booting Zephyr OS v1.12.0-rc1-176-gf091be783 ***** [fs/nvs] [DBG] nvs_reinit: (Re)Initializing sectors [fs/nvs] [DBG] _nvs_sector_init: f->write_location set to c [fs/nvs] [INF] nvs_init: maximum storage length 256 byte [fs/nvs] [INF] nvs_init: write-align: 1, write-addr: c [fs/nvs] [INF] nvs_init: entry sector: 0, entry sector ID: 1 No address found, adding 192.168.1.1 at id 1 No key found, adding it at id 2 No Reboot counter found, adding it at id 3 Id: 4 not found, adding it Longarray not found, adding it as id 4 Reboot counter history: ...0 Oldest reboot counter: 0 Rebooting in ...5...4...3...2...1 ***** Booting Zephyr OS v1.12.0-rc1-176-gf091be783 ***** [fs/nvs] [INF] nvs_init: maximum storage length 256 byte [fs/nvs] [INF] nvs_init: write-align: 1, write-addr: c7 [fs/nvs] [INF] nvs_init: entry sector: 0, entry sector ID: 1 Entry: 1, Address: 192.168.1.1 Id: 2, Key: ff fe fd fc fb fa f9 f8 Id: 3, Reboot_counter: 1 Id: 4, Data: DATA Id: 5, Longarray: 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13 14 15 16 17 18 Reboot counter history: ...1...0 Oldest reboot counter: 0 Rebooting in ...5...4...3...2...1 ...