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samples: drivers: dac: add support for twr_ke18f board

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Add support for the NXP TWR-KE18F development board to the DAC driver
sample.

Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
This commit is contained in:
Henrik Brix Andersen 2020-04-21 10:21:36 +02:00 • committed by Maureen Helm
commit 280e3fa999
3 changed files with 33 additions and 2 deletions
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26
samples/drivers/dac/README.rst
View file

@ -13,7 +13,30 @@ Building and Running
The DAC output is defined in the board's devicetree and pinmux file.
Only board nucleo_l073rz is supported for now.
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 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.
Sample output
=============
@ -26,7 +49,6 @@ The following output is printed:
.. code-block:: console
DAC internal reference voltage: 3300 mV
Generating sawtooth signal at DAC channel 1.
.. note:: If the DAC is not supported, the output will be an error message.

1
samples/drivers/dac/sample.yaml
View file

@ -3,6 +3,7 @@ sample:
tests:
sample.drivers.dac:
tags: DAC
platform_whitelist: nucleo_l073rz twr_ke18f
depends_on: dac
harness: console
harness_config:

8
samples/drivers/dac/src/main.c
View file

@ -8,9 +8,17 @@
#include <sys/printk.h>
#include <drivers/dac.h>
#if defined(CONFIG_BOARD_NUCLEO_L073RZ)
#define DAC_DEVICE_NAME DT_LABEL(DT_ALIAS(dac1))
#define DAC_CHANNEL_ID 1
#define DAC_RESOLUTION 12
#elif defined(CONFIG_BOARD_TWR_KE18F)
#define DAC_DEVICE_NAME DT_LABEL(DT_NODELABEL(dac0))
#define DAC_CHANNEL_ID 0
#define DAC_RESOLUTION 12
#else
#error "Unsupported board."
#endif
static const struct dac_channel_cfg dac_ch_cfg = {
.channel_id = DAC_CHANNEL_ID,