zephyr

History

Francois Ramu 055c1c637e samples: drivers: stm32u5x octospi enables DMA Adds the dma transfer for the octoSPI on NOR octo Flash of the b_u585i_iot02a disco kit. The channel for the GPDMA is 0-15 (0-7 for DMA1, 8-15 for DMA2) The channel 12 to 15 are used for GPDMA transfers to/from external memories. The request is 41 for the OCTOSPI2. Signed-off-by: Francois Ramu <francois.ramu@st.com>		2022-11-22 12:00:00 +00:00
..
boards	samples: drivers: stm32u5x octospi enables DMA	2022-11-22 12:00:00 +00:00
src	includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h>	2022-09-05 16:31:47 +02:00
CMakeLists.txt
prj.conf
README.rst
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!