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https://github.com/zephyrproject-rtos/zephyr
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e18fcbba5a
Now that device_api attribute is unmodified at runtime, as well as all the other attributes, it is possible to switch all device driver instance to be constant. A coccinelle rule is used for this: @r_const_dev_1 disable optional_qualifier @ @@ -struct device * +const struct device * @r_const_dev_2 disable optional_qualifier @ @@ -struct device * const +const struct device * Fixes #27399 Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com> |
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| src | ||
| CMakeLists.txt | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. _samples_lcd_hd44780:
LCD HD44780 driver sample
#########################
Overview
********
Display text strings on parallel interfacing HD44780 based
generic LCD controller using GPIO pins to interface with
Arduino Due (SAM3).
Building and Running
********************
This project can be built and executed on as follows:
.. zephyr-app-commands::
:zephyr-app: samples/drivers/lcd_hd44780
:host-os: unix
:board: arduino_due
:goals: flash
:compact:
Sample Output
=============
.. code-block:: console
LCD Init
Page 1: message
Page 2: message
Page 3: message
Display output
==============
.. code-block:: console
********************
Arduino Due
yalpsiD DCL 4x02
********************
.. code-block:: console
-------------------
Zephyr Rocks!
My super RTOS
-------------------
.. code-block:: console
--------------------
--------HOME--------
I am home!