zephyr

History

Erwan Gouriou e2ff107cf2 samples: spi_flash: Add compatibility with st,stm32-qspi-nor Enable using st,stm32-qspi-nor compatible driver for this sample. Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>		2021-01-15 10:29:30 -05:00
..
boards	drivers/flash/nrf_qspi_nor: Add support for nRF53 Series SoCs	2020-11-10 21:01:37 +02:00
src	samples: spi_flash: Add compatibility with st,stm32-qspi-nor	2021-01-15 10:29:30 -05:00
CMakeLists.txt	samples: make find_package(Zephyr...) REQUIRED	2020-05-29 10:47:25 +02:00
prj.conf
README.rst	samples: spi_flash: add README	2020-08-27 12:39:43 -04:00
sample.yaml	samples: spi_flash: Add compatibility with st,stm32-qspi-nor	2021-01-15 10:29:30 -05:00

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!