ARMmbed/ntp-client

NTP Client for Mbed OS

Mbed OS NTP Client

This library allows you to fetch time information from a NTP server.

For an example application, please see https://github.com/ARMmbed/ntp-client-example.

Getting started

If you don't have an existing Mbed OS project, go ahead and create one.

mbed new ntp-project
cd ntp-project

Now add the library to your project.

mbed import https://github.com/ARMmbed/ntp-client

The library will now be available in your project. Please see the API documentation below for usage information.

API

NTPClient(NetworkInterface *iface) [constructor]

Create an NTP client. You need to provide a pointer to an Mbed OS NetworkInterface. The interface should be connected and ready before calling get_timestamp.

time_t NTPClient::get_timestamp(int timeout)

Return time information, typed as a time_t. You can pass in an optional timeout argument (defaults to 15000 milliseconds). For information on timeout values, please see the Mbed OS Socket documentation.

void set_server(char* server, int port)

Change the NTP server and port. The default server is 2.pool.ntp.org and the default port is 123.