zephyr

History

Jakub Wasilewski 8e881959a4 boards: hifive_unmatched: add support for S7 and U74 targets Add `hifive_unmatched//s7` (earlier selected by default, using `hifive_unmatched`) and `hifive_unmatched//u74` targets. Define work-area for other 4 cores in openocd.cfg Update twister platform white/black lists, to support new targets Signed-off-by: Jakub Wasilewski <jwasilewski@internships.antmicro.com> Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>		2024-11-20 10:15:03 +00:00
..
boards	boards: nordic: Remove nRF54L15 PDK	2024-10-21 01:46:39 +01:00
src	samples: spi_flash: node from compat, not alias	2024-06-06 15:21:18 -05:00
CMakeLists.txt
prj.conf
README.rst	samples: spi_flash: node from compat, not alias	2024-06-06 15:21:18 -05:00
sample.yaml	boards: hifive_unmatched: add support for S7 and U74 targets	2024-11-20 10:15:03 +00:00

README.rst

.. zephyr:code-sample:: spi-nor
   :name: JEDEC SPI-NOR flash
   :relevant-api: flash_interface

   Use the flash API to interact with an SPI NOR serial flash memory device.

Overview
********

This sample demonstrates using the :ref:`flash API <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 devicetree node with one of the
following bindings as a compatible:

* :dtcompatible:`jedec,spi-nor`,
* :dtcompatible:`st,stm32-qspi-nor`,
* :dtcompatible:`st,stm32-ospi-nor`,
* :dtcompatible:`nordic,qspi-nor`.

.. 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!