zephyr

History

HaiLong Yang 823b468890 samples: spi_flash: add gd32f450i_eval and gd32vf103v_eval boards This add gd32f450i_eval and gd32vf103v_eval boards to spi_flash sample. Signed-off-by: HaiLong Yang <cameledyang@pm.me>		2022-03-29 10:21:15 -05:00
..
boards	samples: spi_flash: add gd32f450i_eval and gd32vf103v_eval boards	2022-03-29 10:21:15 -05:00
src	samples: drivers: spi_flash: add support for the NPCX EVB	2021-11-01 21:48:20 -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!