zephyr

History

Ioannis Glaropoulos f3807f19dc boards: arm: nrf51_pca10028: rename board to nrf51dk_nrf51422 We rename the nRF51 Dev Kit board target (nrf51_pca10028) to nrf51dk_nrf51422. We update all associated references in the supportive documentation and all nRF51-related cofigurations and overlay files in the samples and tests in the tree. Signed-off-by: Ioannis Glaropoulos <Ioannis.Glaropoulos@nordicsemi.no>		2020-03-24 11:45:27 +01:00
..
src	drivers: counter: add counter_get_value(), deprecate counter_read()	2020-01-28 12:52:46 -05:00
CMakeLists.txt	…
Kconfig	…
README.rst	…
prj.conf	…
sample.yaml	boards: arm: nrf51_pca10028: rename board to nrf51dk_nrf51422	2020-03-24 11:45:27 +01:00

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/drivers/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>