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sntp: extend API for UNIX timestamp

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This commit is contained in:
Martine Lenders 2017-03-04 22:04:59 +01:00
parent c513eb1027
commit 10ca03aab3
2 changed files with 21 additions and 0 deletions
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6
sys/include/net/ntp_packet.h
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@ -46,6 +46,12 @@ extern "C" {
#define NTP_VERSION (4U) /**< NTP version */ #define NTP_VERSION (4U) /**< NTP version */
#define NTP_PORT (123U) /**< NTP port number */ #define NTP_PORT (123U) /**< NTP port number */
/**
* @brief Offset in seconds of NTP timestamp (seconds from 1990-01-01 00:00:00 UTC)
* to UNIX timestamp (seconds from 1970-01-01 00:00:00 UTC).
*/
#define NTP_UNIX_OFFSET (2208988800)
/** /**
* @brief NTP modes * @brief NTP modes
*/ */

15
sys/include/net/sntp.h
View File

@ -1,5 +1,6 @@
/* /*
* Copyright (C) 2016 Luminița Lăzărescu <cluminita.lazarescu@gmail.com> * Copyright (C) 2016 Luminița Lăzărescu <cluminita.lazarescu@gmail.com>
* Copyright (C) 2017 Freie Universität Berlin
* *
* This file is subject to the terms and conditions of the GNU Lesser * This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level * General Public License v2.1. See the file LICENSE in the top level
@ -23,7 +24,11 @@
#define SNTP_H #define SNTP_H
#include <stdint.h> #include <stdint.h>
#include <time.h>
#include "net/ntp_packet.h"
#include "net/sock/udp.h" #include "net/sock/udp.h"
#include "xtimer.h"
#ifdef __cplusplus #ifdef __cplusplus
extern "C" { extern "C" {
@ -47,6 +52,16 @@ int sntp_sync(sock_udp_ep_t *server, uint32_t timeout);
*/ */
int64_t sntp_get_offset(void); int64_t sntp_get_offset(void);
/**
* @brief Get time in microseconds from 1970-01-01 00:00:00 UTC.
*
* @return Time in microseconds from 1970-01-01 00:00:00 UTC
*/
static inline uint64_t sntp_get_unix_usec(void)
{
return (uint64_t)(sntp_get_offset() - (NTP_UNIX_OFFSET * US_PER_SEC) + xtimer_now_usec64());
}
#ifdef __cplusplus #ifdef __cplusplus
} }
#endif #endif