zephyr

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Yuval Peress 53ef68d459 include: Prefix includes to use a scope Move include paths and add new target_include_directories to support backwards compatibility: * /include -> /include/zephyr example: <irq.h> -> <zephyr/irq.h> Issue #41543 Signed-off-by: Yuval Peress <peress@google.com>		2022-04-08 19:03:32 +02:00
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src
CMakeLists.txt	include: Prefix includes to use a scope	2022-04-08 19:03:32 +02:00
Makefile.posix
prj.conf
README.rst	doc: use :kconfig:option: domain role	2022-03-02 09:28:37 +01:00
sample.yaml

README.rst

.. _posix-gettimeofday-sample:

POSIX 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, a version for native POSIX operating systems (e.g. Linux)
can be built using:

.. code-block:: console

   make -f Makefile.posix