zephyr

History

Alberto Escolar Piedras 6c38bc8ec4 boards native_posix: Remove twister support native_posix is being removed as it has reached its end of life in 4.2, after being deprecated since 4.0. Remove the twister support for native_posix[//64] and therefore all references to them from the testcases and samples yamls, so twister does not error out. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>		2025-03-07 19:16:14 +01:00
..
src
CMakeLists.txt
Makefile.host
prj.conf
README.rst
sample.yaml	boards native_posix: Remove twister support	2025-03-07 19:16:14 +01:00

README.rst

.. zephyr:code-sample:: posix-gettimeofday
   :name: gettimeofday() with clock initialization

   Use ``gettimeofday()`` with clock initialization over SNTP.

Overview
********

This sample application demonstrates using the POSIX `gettimeofday()`_ function to display the
absolute wall clock time and local time every second. At system startup, the current time is
queried using the SNTP networking protocol, enabled by setting the
:kconfig:option:`CONFIG_NET_CONFIG_CLOCK_SNTP_INIT` and
:kconfig:option:`CONFIG_NET_CONFIG_SNTP_INIT_SERVER` options.

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

- :ref:`networking_with_host`
- or, a board with hardware networking
- NAT/routing should be set up to allow connections to the Internet
- DNS server should be available on the host to resolve domain names

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

This project outputs to the console. It can be built and executed on QEMU as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/posix/gettimeofday
   :host-os: unix
   :board: qemu_x86
   :goals: run
   :compact:

For comparison, to build directly for your host OS if it is POSIX compliant (for ex. Linux):

.. code-block:: console

   cd samples/posix/gettimeofday
   make -f Makefile.host

The make output file will be located in samples/posix/gettimeofday/build.

.. _gettimeofday(): https://pubs.opengroup.org/onlinepubs/009604599/functions/gettimeofday.html