42 lines
974 B
ReStructuredText
42 lines
974 B
ReStructuredText
.. _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!
|