Eugen COCA wrote: > Yes, the ideea is to display the time from a ntp server on a LED > display (using the Ethernet connection, in order to verify the server > is in good working condition). I asked if someone have anything that > is just ready to use, without doing the whole job from the ground > (and, of course, if he want to share with us).
You need only build up a packet as described in: http://www.faqs.org/rfcs/rfc2030.html and read the fields in the packet you get back. For the sort of accuracy you appear to want ("wrist-watch" accuracy?), just reading one of the server-based time stamps would do. You might also consider the daytime or time protocol: http://www.faqs.org/rfcs/rfc867.html http://www.faqs.org/rfcs/rfc868.html Time: The server listens for a connection on port 37. When the connection is established, the server returns a 32-bit time value and closes the connection. If the server is unable to determine the time at its site, it should either refuse the connection or close it without sending anything. Daytime: One daytime service is defined as a connection based application on TCP. A server listens for TCP connections on TCP port 13. Once a connection is established the current date and time is sent out the connection as a ascii character string (and any data received is thrown away). The service closes the connection after sending the quote. For SNTP, I thought there was source code in the standard distribution. David _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
