zephyr

History

Francois Ramu 3402dfb3da samples: drivers: stm32h7 octospi enables DMA Adds the dma transfer for the octoSPI on NOR octo Flash of the stm32h7b3i and stm32h735g disco kits. The channel for the MDMA is 0-15. The MDMA request is 0x16 for the OCTOSPI1 fifo threshold Signed-off-by: Francois Ramu <francois.ramu@st.com>		2022-09-08 10:07:21 +00:00
..
boards	samples: drivers: stm32h7 octospi enables DMA	2022-09-08 10:07:21 +00:00
src	includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h>	2022-09-05 16:31:47 +02:00
CMakeLists.txt	cmake: increase minimal required version to 3.20.0	2021-08-20 09:47:34 +02:00
README.rst	…
prj.conf	…
sample.yaml	samples: drivers: spi_flash: Exclude hifive_unmatched	2022-07-08 09:36:43 +02:00

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!