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Ilya Tagunov 3dc6ee048d boards: nucleo_l073rz/l152re: use node labels in DAC samples and tests Use node labels instead of aliases to select ADC and DAC instance in samples and tests. Signed-off-by: Ilya Tagunov <tagunil@gmail.com>		2020-06-12 11:06:44 +02:00
..
src	boards: nucleo_l073rz/l152re: use node labels in DAC samples and tests	2020-06-12 11:06:44 +02:00
CMakeLists.txt	samples: make find_package(Zephyr...) REQUIRED	2020-05-29 10:47:25 +02:00
README.rst	samples: drivers: dac: Add Nucleo-L152RE board	2020-06-12 11:06:44 +02:00
prj.conf	…
sample.yaml	samples: drivers: dac: Add Nucleo-L152RE board	2020-06-12 11:06:44 +02:00

README.rst

.. _dac-sample:

Digital-to-Analog Converter (DAC)
#################################

Overview
********

This sample demonstrates how to use the DAC driver API.

Building and Running
********************

The DAC output is defined in the board's devicetree and pinmux file.

Building and Running for ST Nucleo L073RZ
=========================================
The sample can be built and executed for the
:ref:`nucleo_l073rz_board` as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/dac
   :board: nucleo_l073rz
   :goals: build flash
   :compact:

Building and Running for ST Nucleo L152RE
=========================================
The sample can be built and executed for the
:ref:`nucleo_l152re_board` as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/dac
   :board: nucleo_l152re
   :goals: build flash
   :compact:

Building and Running for NXP TWR-KE18F
======================================
The sample can be built and executed for the :ref:`twr_ke18f` as
follows:

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/dac
   :board: twr_ke18f
   :goals: build flash
   :compact:

DAC output is available on pin A32 of the primary TWR elevator
connector.

Building and Running for NXP FRDM-K64F
======================================
The sample can be built and executed for the :ref:`frdm_k64f` as
follows:

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/dac
   :board: frdm_k64f
   :goals: build flash
   :compact:

DAC output is available on connector J4 pin 11.

Sample output
=============

You should see a sawtooth signal with an amplitude of the DAC reference
voltage and a period of approx. 4 seconds at the DAC output pin specified
by the board.

The following output is printed:

.. code-block:: console

   Generating sawtooth signal at DAC channel 1.

.. note:: If the DAC is not supported, the output will be an error message.