zephyr

History

Katsuhiro Suzuki 4f0c7141b3 samples: drivers: spi_flash: fix printf warning on 64bit environment This patch fixes printf format specifier "%u" -> "%zu" for printing an argument of size_t on 64bit environment. Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>		2021-09-03 09:52:26 -04:00
..
boards	samples: add actinius_icarus_bee config in spi_flash and fs	2021-05-06 15:03:32 +02:00
src	samples: drivers: spi_flash: fix printf warning on 64bit environment	2021-09-03 09:52:26 -04:00
CMakeLists.txt	cmake: increase minimal required version to 3.20.0	2021-08-20 09:47:34 +02:00
prj.conf
README.rst
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!