zephyr

History

Gerard Marull-Paretas f8c0e3907e samples: drivers: flash_shell: use DEVICE_DT_GET_OR_NULL The optional flash device can be obtained at compile time using DEVICE_DT_GET_OR_NULL. Init code has been adjusted so that flash_dev is forced to NULL when device is not ready (user can later specify the device manually). Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>		2022-03-31 13:55:10 +02:00
..
src	samples: drivers: flash_shell: use DEVICE_DT_GET_OR_NULL	2022-03-31 13:55:10 +02:00
CMakeLists.txt
Kconfig
prj.conf
README.rst
sample.yaml

README.rst

.. _samples_flash_shell:

Flash Shell Sample
##################

Overview
********
This is a simple shell module that allows arbitrary boards with flash
driver support to explore the flash device.

Building and Running
********************

This project can be built and executed on as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/flash_shell
   :host-os: unix
   :board: qemu_x86
   :goals: run
   :compact:

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

.. code-block:: console

    uart:~$ flash page_count
    Flash device contains 1024 pages.
    uart:~$ flash page_erase 1023
    Erasing page 1023 (start offset 0xffc00, size 0x400)
    uart:~$ flash page_write 1023 8 17 19 28 39
    Reading back written bytes:
    11 13 1c 27
    uart:~$ flash page_write 1023 4 77 9 1 2
    Reading back written bytes:
    4d 09 01 02
    uart:~$ flash page_read 1023 4 12
    4d 09 01 02 | 11 13 1c 27
    ff ff ff ff
    uart:~$ flash page_read 1023 0 16
    ff ff ff ff | 4d 09 01 02
    11 13 1c 27 | ff ff ff ff