zephyr

History

Jun Lin ef995dfbdc samples: drivers: spi_flash: add support for the NPCX EVB This commit adds the support to run the SPI NOR sample code on the npcx7m6fb_evb and npcx9m6f_evb boards. Signed-off-by: Jun Lin <CHLin56@nuvoton.com> Change-Id: I780c5dfcf53f3ac537da946673fc03f5ee24e90c		2021-11-01 21:48:20 -04:00
..
boards	samples: drivers: spi_flash: add support for the NPCX EVB	2021-11-01 21:48:20 -04:00
src	samples: drivers: spi_flash: add support for the NPCX EVB	2021-11-01 21:48:20 -04:00
CMakeLists.txt	…
README.rst	…
prj.conf	…
sample.yaml	…

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!