zephyr

History

Francois Ramu 8aa3960874 samples: drivers flash add a test case for stm32h7 octospi This add a removes the SPI config for the stm32H735 and stm32H7b3 disco boards when testing the octoSPI. Signed-off-by: Francois Ramu <francois.ramu@st.com>		2022-07-27 18:46:25 +02:00
..
boards	samples: drivers flash add a test case for stm32h7 octospi	2022-07-27 18:46:25 +02:00
src	samples: drivers: spi_flash: Update sample to use alias	2022-07-22 19:15:13 +00:00
CMakeLists.txt	cmake: increase minimal required version to 3.20.0	2021-08-20 09:47:34 +02:00
prj.conf	samples: spi_flash: remove an unnecessary config symbol	2017-02-04 19:45:44 +00:00
README.rst	samples: spi_flash: add README	2020-08-27 12:39:43 -04:00
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!