sntp.c File Reference

This file contains a very basic SNTP client. More...

#include <std.h>
#include <clk.h>
#include <tsk.h>
#include "lwip/sockets.h"
#include "lwip/netdb.h"
#include "sockets_inline.h"
#include "net/clients/sntp.h"

Functions
int	SNTPGetTime (const char *apServer, time_t *apTime, struct timeval *apTimeOut, sntpframe *apData)

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Detailed Description

This file contains a very basic SNTP client.

o 0 | / Copyright (c) 2006-2007 (CL)—o Critical Link, LLC \ O

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Function Documentation

int SNTPGetTime	(	const char *	apServer,
		time_t *	apTime,
		struct timeval *	apTimeOut,
		sntpframe *	apData
	)

This routine is used to issue a request to a time server. The address of the server is provided (dotted IP notation), as well as storage for the resulting time_t value. A timeout (in OS ticks) is also required. Optional storage may also be provided for the entire response from the time server to be returned to the caller.

Parameters:

[in]	apServer	The server IP address (w.x.y.z)
[out]	apTime	Returned time (seconds since 1/1/1900)
[in]	apTimeOut	Ticks to wait for SNTP completion
[out]	apData	Pointer to storage for SNTP response (may be NULL)

Returns:

Zero if successful, -1 otherwise.