zephyr

History

Kumar Gala 4415a3bd3c samples: drivers: spi_flash: Exclude hifive_unmatched hifive_unmatched has a jedec,spi-nor flash node, however we have no SPI driver for the controller so exclude the platform from this sample. Signed-off-by: Kumar Gala <galak@kernel.org>		2022-07-08 09:36:43 +02:00
..
boards	samples: spi_flash: add gd32f450i_eval and gd32vf103v_eval boards	2022-03-29 10:21:15 -05:00
src	samples: spi_flash: Convert to use DEVICE_DT_GET	2022-07-08 09:36:43 +02:00
CMakeLists.txt
prj.conf
README.rst
sample.yaml	samples: drivers: spi_flash: Exclude hifive_unmatched	2022-07-08 09:36:43 +02:00

README.rst

.. _spi-nor-sample:

JEDEC SPI-NOR Sample
####################

Overview
********

This sample demonstrates using the 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 :ref:`devicetree
<dt-guide>` entry with ``jedec,spi-nor`` as a compatible.

.. 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!