NTP Client

Table of Contents

  1. Packages
  2. Library
  3. License

Out of date

This library was built with older versions of the mbed library.

For an NTP client that is compatible with mbed OS 5, please see the updated example: https://github.com/ARMmbed/ntp-client-example

Packages

Precompiled version:

Import libraryNTPClient_NetServices

NTP Client for the "old" NetServices libraries

Last commit 05 Aug 2010 by Donatien Garnier

Library

Architecture

The NTP client is a simple UDP client that will update the mbed's RTC.

Includes

#include "NTPClient.h"

Reference

Import program
NetServicesSource - NTPClient Class Reference

Public Member Functions

NTPClient ()
Instantiates the NTP client.
NTPResult setTime (const Host &host)
Gets current time (blocking)
NTPResult setTime (const Host &host, void(*pMethod)( NTPResult ))
Gets current time (non-blocking)
template<class T >
NTPResult setTime (const Host &host, T *pItem, void(T::*pMethod)( NTPResult ))
Gets current time (non-blocking)
void doSetTime (const Host &host)
Gets current time (non-blocking)
void setOnResult (void(*pMethod)( NTPResult ))
Setups the result callback.
void close ()
This flags the service as to be destructed if owned by the pool.

Protected Member Functions

virtual void poll ()
This method can be inherited so that it is called on each Net::poll() call.

Examples

This example updates the RTC.

#include "mbed.h"
#include "EthernetNetIf.h"
#include "NTPClient.h"

EthernetNetIf eth; 
NTPClient ntp;
  
int main() {

  printf("Start\n");

  printf("Setting up...\n");
  EthernetErr ethErr = eth.setup();
  if(ethErr)
  {
    printf("Error %d in setup.\n", ethErr);
    return -1;
  }
  printf("Setup OK\r\n");
  
  time_t ctTime;
  ctTime = time(NULL);  
  printf("Current time is (UTC): %s\n", ctime(&ctTime));  

  Host server(IpAddr(), 123, "0.uk.pool.ntp.org");
  ntp.setTime(server);
    
  ctTime = time(NULL);  
  printf("\nTime is now (UTC): %s\n", ctime(&ctTime)); 
  
  while(1)
  {
  
  }
  
  return 0;
  
}

This program can be imported from here :

Import programNTPClientExample

Last commit 09 Jul 2010 by Donatien Garnier

License

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