zephyr

History

Andrzej Głąbek 6e22d19fd2 samples: drivers: spi_flash: Remove unnecessary Kconfig option changes It is no longer needed to enable a specific flash driver in the sample configuration. An appropriate driver (together with its dependecies, like the SPI bus) for a given target will be enabled automatically based on what is enabled in DTS. Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>		2024-12-09 15:10:47 +01:00
..
boards	samples: drivers: spi_flash: Remove unnecessary Kconfig option changes	2024-12-09 15:10:47 +01:00
src	samples: spi_flash: node from compat, not alias	2024-06-06 15:21:18 -05:00
CMakeLists.txt	cmake: increase minimal required version to 3.20.0	2021-08-20 09:47:34 +02:00
prj.conf	samples: drivers: spi_flash: Remove unnecessary Kconfig option changes	2024-12-09 15:10:47 +01:00
README.rst	samples: spi_flash: node from compat, not alias	2024-06-06 15:21:18 -05:00
sample.yaml	samples, tests: remove usage of space-separated lists	2024-12-04 14:14:53 -05:00

README.rst

.. zephyr:code-sample:: spi-nor
   :name: JEDEC SPI-NOR flash
   :relevant-api: flash_interface

   Use the flash API to interact with an SPI NOR serial flash memory device.

Overview
********

This sample demonstrates using the :ref:`flash API <flash_api>` on a SPI NOR serial flash
memory device.  While trivial it is an example of direct access and
allows confirmation that the flash is working and that automatic power
savings is correctly implemented.

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

The application will build only for a target that has a devicetree node with one of the
following bindings as a compatible:

* :dtcompatible:`jedec,spi-nor`,
* :dtcompatible:`st,stm32-qspi-nor`,
* :dtcompatible:`st,stm32-ospi-nor`,
* :dtcompatible:`nordic,qspi-nor`.

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/spi_flash
   :board: nrf52840dk/nrf52840
   :goals: build flash
   :compact:

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

.. code-block:: console

   *** Booting Zephyr OS build zephyr-v2.3.0-2142-gca01d2e1d748  ***

   JEDEC QSPI-NOR SPI flash testing
   ==========================

   Test 1: Flash erase
   Flash erase succeeded!

   Test 2: Flash write
   Attempting to write 4 bytes
   Data read matches data written. Good!