nrf51822 ---时间换成时间戳
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单片机中时期如何转换成时间戳
Unix时间戳(Unix timestamp)，或称Unix时间(Unix time)、POSIX时间(POSIX time)，是一种时间表示方式，定义为从
格林威治时间1970年01月01日00时00分00秒(北京时间1970年01月01日08时00分00秒)起至
现在的总秒数。Unix时间戳不仅被使用在Unix系统、类Unix系统中(比如
Linux系统)，也在许多其他操作系统中被广泛采用。
转换程序如下： //**************************************************************************
/********************************************************************************
* @file calender.h
* @author Depth
* @version V1.0.0
* @date 12-May-2014
* @Emial [email protected]
* @brief head file for calender.c
******************************************************************************/
#ifndef CALENER_H
#define CALENER_H
#ifdef __cplusplus
extern "C"
{
#endif
#include <stdint.h>
/*********************************************************************
* MACROS
*/
#define IsLeapYear(yr) (!((yr) % 400) || (((yr) % 100) && !((yr) % 4)))
/*********************************************************************
* TYPEDEFS
*/
// To be used with
typedef struct
{
uint8_t seconds; // 0-59
uint8_t minutes; // 0-59
uint8_t hour; // 0-23
uint8_t day; // 0-30
uint8_t month; // 0-11
uint16_t year; // 2000+
} UTCTimeStruct;
// number of seconds since 0 hrs, 0 minutes, 0 seconds, on the
// 1st of January 2000 UTC
typedef uint32_t UTCTime;
extern UTCTime TimeSeconds;
extern UTCTimeStruct Time_iOS;
/*********************************************************************
* FUNCTIONS
*/
/*
* Updates the OSAL clock and Timers from the MAC 320us timer tick.
*/
extern void TimeUpdate( void );
/*
* Set the new time. This will only set the seconds portion
* of time and doesn't change the factional second counter.
* newTime - number of seconds since 0 hrs, 0 minutes,
* 0 seconds, on the 1st of January 2000 UTC
*/
extern void Set_Clock( UTCTime newTime );
/*
* Gets the current time. This will only return the seconds
* portion of time and doesn't include the factional second counter.
* returns: number of seconds since 0 hrs, 0 minutes,
* 0 seconds, on the 1st of January 2000 UTC
*/
extern UTCTime Get_Clock( void );
/*
* Converts UTCTime to UTCTimeStruct
*
* secTime - number of seconds since 0 hrs, 0 minutes,
* 0 seconds, on the 1st of January 2000 UTC
* tm - pointer to breakdown struct
*/
extern void ConvertUTCTime( UTCTimeStruct *tm, UTCTime secTime );
/*
* Converts UTCTimeStruct to UTCTime (seconds since 00:00:00 01/01/2000)
*
* tm - pointer to UTC time struct
*/
extern UTCTime ConvertUTCSecs( UTCTimeStruct *tm );
/*
* Update/Adjust the osal clock and timers
* Msec - elapsed time in milli seconds
*/
extern void AdjustTimer( uint32_t Msec );
/*********************************************************************
*********************************************************************/
#ifdef __cplusplus
}
#endif
#endif /* OSAL_CLOCK_H */
/********************************************************************************
* @file calender.c
* @author Depth
* @version V1.0.0
* @date 12-May-2014
* @Emial [email protected]
* @brief calender module based on app timer
******************************************************************************/
#include "calender.h"
/*********************************************************************
* MACROS
*/
#define YearLength(yr) (IsLeapYear(yr) ? 366 : 365)
//ÈÕÀú±äÁ¿
UTCTimeStruct Time_iOS = {14,13,12,11,1,2015};
UTCTimeStruct Time_Current;
/*********************************************************************
* CONSTANTS
*/
// (MAXCALCTICKS * 5) + (max remainder) must be <= (uint16_t max),
// so: (13105 * 5) + 7 <= 65535
#define MAXCALCTICKS ((uint16_t)(13105))
#define BEGYEAR 1970 // UTC started at 00:00:00 January 1, 2000
#define DAY 86400UL // 24 hours * 60 minutes * 60 seconds
/*********************************************************************
* EXTERNAL FUNCTIONS
*/
extern uint16_t ll_McuPrecisionCount(void);
/*********************************************************************
* LOCAL VARIABLES
*/
//static uint16_t previousLLTimerTick = 0;
//static uint16_t remUsTicks = 0;
//static uint16_t timeMSec = 0;
// number of seconds since 2010.1.1. 00:00:00
UTCTime TimeSeconds = 0;
/*********************************************************************
* LOCAL FUNCTION PROTOTYPES
*/
static uint8_t monthLength( uint8_t lpyr, uint8_t mon );
/*********************************************************************
* FUNCTIONS
*/
/*********************************************************************
* @fn Set_Clock
*
* @brief Set the new time. This will only set the seconds portion
* of time and doesn't change the factional second counter.
*
* @param newTime - number of seconds since 0 hrs, 0 minutes,
* 0 seconds, on the 1st of January 2000 UTC
*
* @return none
*/
void Set_Clock( UTCTime newTime )
{
TimeSeconds = newTime;
}
/*********************************************************************
* @fn Get_Clock
*
* @brief Gets the current time. This will only return the seconds
* portion of time and doesn't include the factional second
* counter.
*
* @param none
*
* @return number of seconds since 0 hrs, 0 minutes, 0 seconds,
* on the 1st of January 2000 UTC
*/
UTCTime Get_Clock( void )
{
return ( TimeSeconds );
}
/*********************************************************************
* @fn ConvertUTCTime
*
* @brief Converts UTCTime to UTCTimeStruct
*
* @param Êä³ö tm - pointer to breakdown struct
*
* @param ÊäÈë secTime - number of seconds since 0 hrs, 0 minutes,
* 0 seconds, on the 1st of January 2000 UTC
*
* @return none
*/
void ConvertUTCTime( UTCTimeStruct *tm, UTCTime secTime )
{
// calculate the time less than a day - hours, minutes, seconds
{
uint32_t day = secTime % DAY; // Çó³ö×îºóÒ»ÌìµÄÊ£ÓàÃëÊý£¬£¨³ýÈ¥ÕûÊýµÄÌìÊýÖ®ºóµÄÊ£ÓàÃëÊý£©
tm->seconds = day % 60UL; // Çó³ö×îºóÒ»·ÖÖÓµÄÊ£ÓàÃëÊý £¨×îºóÒ»ÌìµÄÊ£ÓàÃëÊý¶Ô60ÇóÓࣩ
tm->minutes = (day % 3600UL) / 60UL; //Çó³ö ×îºóһСʱʣÓàµÄÕû·ÖÖÓÊý
tm->hour = day / 3600UL; //Çó×îºóÒ»ÌìµÄÕûСʱÊý
}
// Fill in the calendar - day, month, year
{
uint16_t numDays = secTime / DAY;
tm->year = BEGYEAR;
while ( numDays > YearLength( tm->year ) )
{
numDays -= YearLength( tm->year );
tm->year++;
}
tm->month = 0;
while ( numDays > monthLength( IsLeapYear( tm->year ), tm->month ) )
{
numDays -= monthLength( IsLeapYear( tm->year ), tm->month );
tm->month++;
}
tm->month++;
tm->day = numDays;
tm->day++; //СÍõ
}
}
/*********************************************************************
* @fn monthLength
*
* @param lpyr - 1 for leap year, 0 if not
*
* @param mon - 0 - 11 (jan - dec)
*
* @return number of days in specified month
*/
static uint8_t monthLength( uint8_t lpyr, uint8_t mon )
{
uint8_t days = 31;
if ( mon == 1 ) // feb
{
days = ( 28 + lpyr );
}
else
{
if ( mon > 6 ) // aug-dec
{
mon--;
}
if ( mon & 1 )
{
days = 30;
}
}
return ( days );
}
/*********************************************************************
* @fn ConvertUTCSecs
*
* @brief Converts a UTCTimeStruct to UTCTime
*
* @param tm - pointer to provided struct
*
* @return number of seconds since 00:00:00 on 01/01/2000 (UTC)
*/
UTCTime ConvertUTCSecs( UTCTimeStruct *tm )
{
uint32_t seconds;
/* Seconds for the partial day */
seconds = (((tm->hour * 60UL) + tm->minutes) * 60UL) + tm->seconds;
/* Account for previous complete days */
{
/* Start with complete days in current month */
uint16_t days = tm->day;
/* Next, complete months in current year */
{
int8_t month = tm->month - 1;//
while ( --month >= 0 )
{
days += monthLength( IsLeapYear( tm->year ), month );
}
}
/* Next, complete years before current year */
{
uint16_t year = tm->year;
while ( --year >= BEGYEAR )
{
days += YearLength( year );
}
}
/* Add total seconds before partial day */
seconds += (days * DAY);
}
return ( seconds );
}
/***************************************************************************
***************************************************************************/
void main()
{
UTCTimeStruct Time = {14,30,16,18,8,2015};
Secondflag = ConvertUTCSecs(&Time) - 8*3600; //可以得到多少s，但是因为时间戳是从8：0：0开始计数的 所以应该减去8*3600s
ConvertUTCTime(&Time,1439885936+8*3600); //为什么要加8*3600 因为是从1970：1：1：8：0：0开始计数的
}
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