Simple Network Time Protocol

Simple Network Time Protocol (SNTP) implementation. More...

Detailed Description

Simple Network Time Protocol (SNTP) implementation.

Note

The current implementation of SNTP uses ztimer 64bit version with microsecond accuracy, which can have a strong impact on the power consumption of your device.

Files
file	sntp.h
	SNTP definitions.

Functions
int	sntp_sync (sock_udp_ep_t *server, uint32_t timeout)
	Synchronize with time server.
int64_t	sntp_get_offset (void)
	Get real time offset from system time as returned by ztimer64_now()
static uint64_t	sntp_get_unix_usec (void)
	Get time in microseconds from 1970-01-01 00:00:00 UTC.

Function Documentation

sntp_get_offset()

int64_t sntp_get_offset

(

void

)

Get real time offset from system time as returned by ztimer64_now()

Returns

Real time offset in microseconds relative to 1900-01-01 00:00 UTC

sntp_get_unix_usec()

static uint64_t sntp_get_unix_usec ( void )

inlinestatic

Get time in microseconds from 1970-01-01 00:00:00 UTC.

Returns

Time in microseconds from 1970-01-01 00:00:00 UTC

Definition at line 63 of file sntp.h.

sntp_sync()

int sntp_sync	(	sock_udp_ep_t *	server,
		uint32_t	timeout )

Synchronize with time server.

Parameters

[in]	server	The time server
[in]	timeout	Timeout for the server response in microseconds

Returns

0 on success

Negative number on error