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/*
* FreeRTOS V202212.00
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* https://www.FreeRTOS.org
* https://github.com/FreeRTOS
*
*/
/* */
/* ntpClient.h */
/* */
#ifndef __NTPCLIENT_H__
#define __NTPCLIENT_H__
#define NTP_PORT 123
typedef uint32_t quint32;
typedef int32_t qint32;
typedef uint8_t quint8;
typedef int8_t qint8;
typedef union _SNtpFlags SNtpFlags;
#ifdef _MSC_VER
#define __attribute__( x )
#endif
/**
* 64-bit NTP timestamp.
*/
struct __attribute__( ( __packed__ ) ) _SNtpTimestamp
{
/** Number of seconds passed since Jan 1 1900, in big-endian format. */
quint32 seconds;
/** Fractional time part, in <tt>1/0xFFFFFFFF</tt>s of a second. */
quint32 fraction;
};
typedef struct _SNtpTimestamp SNtpTimestamp;
/**
* Mandatory part of an NTP packet
*/
struct SNtpPacket
{
/** Flags. */
unsigned char flags; /* value 0xDB : mode 3 (client), version 3, leap indicator unknown 3 */
/** Stratum of the clock. */
quint8 stratum; /* value 0 : unspecified */
/** Maximum interval between successive messages, in log2 seconds. Note that the value is signed. */
qint8 poll; /* 10 means 1 << 10 = 1024 seconds */
/** Precision of the clock, in log2 seconds. Note that the value is signed. */
qint8 precision; /* 0xFA = 250 = 0.015625 seconds */
/** Round trip time to the primary reference source, in NTP short format. */
qint32 rootDelay; /* 0x5D2E = 23854 or (23854/65535)= 0.3640 sec */
/** Nominal error relative to the primary reference source. */
qint32 rootDispersion; /* 0x0008 CAC8 = 8.7912 seconds */
/** Reference identifier (either a 4 character string or an IP address). */
qint8 referenceID[ 4 ]; /* or just 0000 */
/** The time at which the clock was last set or corrected. */
SNtpTimestamp referenceTimestamp; /* Current time */
/** The time at which the request departed the client for the server. */
SNtpTimestamp originateTimestamp; /* Keep 0 */
/** The time at which the request arrived at the server. */
SNtpTimestamp receiveTimestamp; /* Keep 0 */
/** The time at which the reply departed the server for client. */
SNtpTimestamp transmitTimestamp;
};
/* Add this number to get secs since 1-1-1900 */
#define TIME1970 2208988800UL
#endif /* __NTPCLIENT_H__ */
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