70 lines
1.1 KiB
C
70 lines
1.1 KiB
C
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/*
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* Copyright (c) 2018 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Public functions for the Precision Time Protocol time specification.
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*
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*/
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#ifndef __PTP_TIME_H
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#define __PTP_TIME_H
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/**
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* @brief Precision Time Protocol time specification
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* @defgroup ptp_time PTP time
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* @ingroup networking
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* @{
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*/
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#include <net/net_core.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Precision Time Protocol Timestamp format.
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*
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* This structure represents a timestamp according
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* to the Precision Time Protocol standard.
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*
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* Seconds are encoded as a 48 bits unsigned integer.
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* Nanoseconds are encoded as a 32 bits unsigned integer.
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*/
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struct net_ptp_time {
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/** Seconds encoded on 48 bits. */
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union {
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struct {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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u32_t low;
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u16_t high;
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u16_t unused;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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u16_t unused;
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u16_t high;
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u32_t low;
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#else
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#error "Unknown byte order"
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#endif
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} _sec;
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u64_t second;
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};
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/** Nanoseconds. */
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u32_t nanosecond;
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};
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#ifdef __cplusplus
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}
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#endif
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/**
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* @}
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*/
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#endif /* __PTP_TIME_H */
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