zephyr

History

Pavlo Havrylyuk f4a1d40924 drivers: counter: Add Infineon CAT1 counter driver Add initial version of Infineon CAT1 counter driver Add initial version of binding file for Infineon Add counters to psco6 dtsi Add external trigger pin that runs counter Signed-off-by: Pavlo Havrylyuk <pavlo.havrylyuk@infineon.com>		2023-07-26 09:10:31 +02:00
..
boards	boards: xtensa: esp32 board split	2023-07-25 18:12:33 +02:00
src	drivers: counter: Add Infineon CAT1 counter driver	2023-07-26 09:10:31 +02:00
CMakeLists.txt	samples: drivers: counter: alarm: Add support to TFM	2022-11-29 13:40:27 +00:00
Kconfig	samples: drivers: counter: alarm: Fix nordic DKs	2023-03-27 22:15:15 +00:00
prj.conf
README.rst
sample.yaml	samples, tests: convert string-based twister lists to YAML lists	2023-05-10 09:52:37 +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.

.. note::
   In case of 1Hz frequency (RTC for example), precision is 1 second.
   Therefore, the sample output may differ in 1 second

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>