Ntp Binding

Documentation of the NTP binding Bundle

Introduction

For installation of the binding, please see Wiki page Bindings.

Generic Item Binding Configuration

In order to bind an item to a NTP query, you need to provide configuration settings. The easiest way to do so is to add some binding information in your item file (in the folder configurations/items`). The syntax for the NTP binding configuration string is explained here:

ntp="[timeZone][:locale]"

where the parts in [] are optional. If no or an incorrect time zone is configured it defaults to TimeZone.getDefault(). If no or an incorrect Locale is configured it defaults to Locale.getDefault().

Here are some examples of valid binding configuration strings:

ntp="America/Detroit:en_US"
ntp="Europe/Berlin:de_DE"
ntp="Europe/Berlin"
ntp=""

As a result, your lines in the items file might look like the following:

DateTime    Date    "Date and Time: [%1$tA, %1$td.%1$tm.%1$tY %1$tT]"  (Status)   { ntp="Europe/Berlin:de_DE" } 

If you like to post the queried time to the knx-bus your line might look like:

DateTime    Date    "Date and Time: [%1$tA, %1$td.%1$tm.%1$tY %1$tT]"  (Status)    { ntp="Europe/Berlin:de_DE", knx="11.001:15/7/2, 10.001:15/7/1" } 

where 11.001 is the KNX date type and 10.001 is the KNX time type

Formatting

Here is an overview of how you can format the output of date and time.

Settings

Via openhab.cfg following NTP Binding settings can be set:

• ntp:refresh default: 15 minutes
• ntp:hostname default: ptbtime1.ptb.de

Note: Via openHAB console a time update can be forced using update org.openhab.binding.ntp.

Example configurations

Simple Example 1

This will use your system information to determine timezone and locale.

openhab.cfg

ntp:hostname=0.us.pool.ntp.org

Items:

DateTime	Date	"Date [%1$tA, %1$td.%1$tm.%1$tY]"	(Status)	{ ntp="" }

Sitemap:

sitemap example
{
    Text item=Date
}

Other Examples

Example configurations can be found here.