zephyr

History

Erwan Gouriou e15852cd62 samples: counter: Add err check on set_alarm call Error checking was missing following call to counter_set_channel_alarm. This was reported in coverity report 203523. Fixes #18374 Additionally remove unneeded err initialization in main function Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>		2019-08-28 09:19:23 -05:00
..
src	samples: counter: Add err check on set_alarm call	2019-08-28 09:19:23 -05:00
CMakeLists.txt	…
Kconfig	…
README.rst	…
prj.conf	…
sample.yaml	samples: drivers: counter: alarm: add nordic boards to the whitelist	2019-06-25 15:00:55 +02:00

README.rst

.. _alarm_sample:

Counter Alarm Sample
#####################

Overview
********
This sample provides an example of alarm application using counter API.
It sets an alarm with an initial delay of 2 seconds. At each alarm
expiry, a new alarm is configured with a delay multiplied by 2.

Requirements
************

This sample requires the support of a timer IP compatible with alarm setting.

References
**********

- :ref:`disco_l475_iot1_board`

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

 .. zephyr-app-commands::
    :zephyr-app: samples/counter/alarm
    :host-os: unix
    :board: disco_l475_iot1
    :goals: run
    :compact:

Sample Output
=============

 .. code-block:: console

    Counter alarm sample

    Set alarm in 2 sec
    !!! Alarm !!!
    Now: 2
    Set alarm in 4 sec
    !!! Alarm !!!
    Now: 6
    Set alarm in 8 sec
    !!! Alarm !!!
    Now: 14
    Set alarm in 16 sec
    !!! Alarm !!!
    Now: 30

    <repeats endlessly>