最近在做的项目需求cc2540在处理数据过程中要把时间戳转换成日期格式，一开始我在网上一直找对应的函数网上都是利用C标准库来处理，由于IAR里的C51库没有time.c，所以无法调用。后来在QQ群里有人说可以用BLE的OSAL_ClockBLE.c里的函数直接转换
/**************************************************************************************************
Filename: OSAL_ClockBLE.c
Revised: $Date: 2008-12-15 15:42:47 -0800 (Mon, 15 Dec 2008) $
Revision: $Revision: 18616 $
Description: OSAL Clock definition and manipulation functions for BLE projects.
Copyright 2008-2011 Texas Instruments Incorporated. All rights reserved.
IMPORTANT: Your use of this Software is limited to those specific rights
granted under the terms of a software license agreement between the user
who downloaded the software, his/her employer (which must be your employer)
and Texas Instruments Incorporated (the "License"). You may not use this
Software unless you agree to abide by the terms of the License. The License
limits your use, and you acknowledge, that the Software may not be modified,
copied or distributed unless embedded on a Texas Instruments microcontroller
or used solely and exclusively in conjunction with a Texas Instruments radio
frequency transceiver, which is integrated into your product. Other than for
the foregoing purpose, you may not use, reproduce, copy, prepare derivative
works of, modify, distribute, perform, display or sell this Software and/or
its documentation for any purpose.
YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
PROVIDED 揂S IS?WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
(INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
Should you have any questions regarding your right to use this Software,
contact Texas Instruments Incorporated at www.TI.com.
**************************************************************************************************/
/*********************************************************************
* INCLUDES
*/
#include "comdef.h"
#include "OnBoard.h"
#include "OSAL.h"
#include "OSAL_Clock.h"
/*********************************************************************
* MACROS
*/
#define YearLength(yr) (IsLeapYear(yr) ? 366 : 365)
/*********************************************************************
* CONSTANTS
*/
// (MAXCALCTICKS * 5) + (max remainder) must be <= (uint16 max),
// so: (13105 * 5) + 7 <= 65535
#define MAXCALCTICKS ((uint16)(13105))
#define BEGYEAR 2000 // UTC started at 00:00:00 January 1, 2000
#define DAY 86400UL // 24 hours * 60 minutes * 60 seconds
/*********************************************************************
* TYPEDEFS
*/
/*********************************************************************
* GLOBAL VARIABLES
*/
/*********************************************************************
* EXTERNAL VARIABLES
*/
/*********************************************************************
* EXTERNAL FUNCTIONS
*/
extern uint16 ll_McuPrecisionCount(void);
/*********************************************************************
* LOCAL VARIABLES
*/
static uint16 previousLLTimerTick = 0;
static uint16 remUsTicks = 0;
static uint16 timeMSec = 0;
// number of seconds since 0 hrs, 0 minutes, 0 seconds, on the
// 1st of January 2000 UTC
UTCTime OSAL_timeSeconds = 0;
/*********************************************************************
* LOCAL FUNCTION PROTOTYPES
*/
static uint8 monthLength( uint8 lpyr, uint8 mon );
static void osalClockUpdate( uint16 elapsedMSec );
/*********************************************************************
* FUNCTIONS
*********************************************************************/
/*********************************************************************
* @fn osalTimeUpdate
*
* @brief Uses the free running rollover count of the MAC backoff timer;
* this timer runs freely with a constant 320 usec interval. The
* count of 320-usec ticks is converted to msecs and used to update
* the OSAL clock and Timers by invoking osalClockUpdate() and
* osalTimerUpdate(). This function is intended to be invoked
* from the background, not interrupt level.
*
* @param None.
*
* @return None.
*/
void osalTimeUpdate( void )
{
uint16 tmp;
uint16 ticks625us;
uint16 elapsedMSec = 0;
// Get the free-running count of 625us timer ticks
tmp = ll_McuPrecisionCount();
if ( tmp != previousLLTimerTick )
{
// Calculate the elapsed ticks of the free-running timer.
ticks625us = tmp - previousLLTimerTick;
// Store the LL Timer tick count for the next time through this function.
previousLLTimerTick = tmp;
/* It is necessary to loop to convert the usecs to msecs in increments so as
* not to overflow the 16-bit variables.
*/
while ( ticks625us > MAXCALCTICKS )
{
ticks625us -= MAXCALCTICKS;
elapsedMSec += MAXCALCTICKS * 5 / 8;
remUsTicks += MAXCALCTICKS * 5 % 8;
}
// update converted number with remaining ticks from loop and the
// accumulated remainder from loop
tmp = (ticks625us * 5) + remUsTicks;
// Convert the 625 us ticks into milliseconds and a remainder
elapsedMSec += tmp / 8;
remUsTicks = tmp % 8;
// Update OSAL Clock and Timers
if ( elapsedMSec )
{
osalClockUpdate( elapsedMSec );
osalTimerUpdate( elapsedMSec );
}
}
}
/*********************************************************************
* @fn osalClockUpdate
*
* @brief Updates the OSAL Clock time with elapsed milliseconds.
*
* @param elapsedMSec - elapsed milliseconds
*
* @return none
*/
static void osalClockUpdate( uint16 elapsedMSec )
{
// Add elapsed milliseconds to the saved millisecond portion of time
timeMSec += elapsedMSec;
// Roll up milliseconds to the number of seconds
if ( timeMSec >= 1000 )
{
OSAL_timeSeconds += timeMSec / 1000;
timeMSec = timeMSec % 1000;
}
}
/*********************************************************************
* @fn osal_setClock
*
* @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 osal_setClock( UTCTime newTime )
{
OSAL_timeSeconds = newTime;
}
/*********************************************************************
* @fn osal_getClock
*
* @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 osal_getClock( void )
{
return ( OSAL_timeSeconds );
}
/*********************************************************************
* @fn osal_ConvertUTCTime
*
* @brief Converts UTCTime to UTCTimeStruct
*
* @param tm - pointer to breakdown struct
*
* @param secTime - number of seconds since 0 hrs, 0 minutes,
* 0 seconds, on the 1st of January 2000 UTC
*
* @return none
*/
void osal_ConvertUTCTime( UTCTimeStruct *tm, UTCTime secTime )
{
// calculate the time less than a day - hours, minutes, seconds
{
uint32 day = secTime % DAY;
tm->seconds = day % 60UL;
tm->minutes = (day % 3600UL) / 60UL;
tm->hour = day / 3600UL;
}
// Fill in the calendar - day, month, year
{
uint16 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->day = numDays;
}
}
/*********************************************************************
* @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 monthLength( uint8 lpyr, uint8 mon )
{
uint8 days = 31;
if ( mon == 1 ) // feb
{
days = ( 28 + lpyr );
}
else
{
if ( mon > 6 ) // aug-dec
{
mon--;
}
if ( mon & 1 )
{
days = 30;
}
}
return ( days );
}
/*********************************************************************
* @fn osal_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 osal_ConvertUTCSecs( UTCTimeStruct *tm )
{
uint32 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 days = tm->day;
/* Next, complete months in current year */
{
int8 month = tm->month;
while ( --month >= 0 )
{
days += monthLength( IsLeapYear( tm->year ), month );
}
}
/* Next, complete years before current year */
{
uint16 year = tm->year;
while ( --year >= BEGYEAR )
{
days += YearLength( year );
}
}
/* Add total seconds before partial day */
seconds += (days * DAY);
}
return ( seconds );
}
/****************************************************************************** Filename: OSAL_Clock.h Revised: $Date: 2012-02-02 12:55:32 -0800 (Thu, 02 Feb 2012) $ Revision: $Revision: 29143 $ Description: OSAL Clock definition and manipulation functions. Copyright 2004-2012 Texas Instruments Incorporated. All rights reserved. IMPORTANT: Your use of this Software is limited to those specific rights granted under the terms of a software license agreement between the user who downloaded the software, his/her employer (which must be your employer) and Texas Instruments Incorporated (the "License"). You may not use this Software unless you agree to abide by the terms of the License. The License limits your use, and you acknowledge, that the Software may not be modified, copied or distributed unless embedded on a Texas Instruments microcontroller or used solely and exclusively in conjunction with a Texas Instruments radio frequency transceiver, which is integrated into your product. Other than for the foregoing purpose, you may not use, reproduce, copy, prepare derivative works of, modify, distribute, perform, display or sell this Software and/or its documentation for any purpose. YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 揂S IS?WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT, NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS. Should you have any questions regarding your right to use this Software, contact Texas Instruments Incorporated at www.TI.com. ******************************************************************************/ #ifndef OSAL_CLOCK_H #define OSAL_CLOCK_H #ifdef __cplusplus extern "C" { #endif /********************************************************************* * INCLUDES */ /********************************************************************* * MACROS */ #define IsLeapYear(yr) (!((yr) % 400) || (((yr) % 100) && !((yr) % 4))) /********************************************************************* * CONSTANTS */ /********************************************************************* * TYPEDEFS */ // number of seconds since 0 hrs, 0 minutes, 0 seconds, on the // 1st of January 2000 UTC typedef uint32 UTCTime; // To be used with typedef struct { uint8 seconds; // 0-59 uint8 minutes; // 0-59 uint8 hour; // 0-23 uint8 day; // 0-30 uint8 month; // 0-11 uint16 year; // 2000+ } UTCTimeStruct; /********************************************************************* * GLOBAL VARIABLES */ /********************************************************************* * FUNCTIONS */ /* * Updates the OSAL clock and Timers from the MAC 320us timer tick. */ extern void osalTimeUpdate( 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 osal_setClock( 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 osal_getClock( 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 osal_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 osal_ConvertUTCSecs( UTCTimeStruct *tm ); /* * Update/Adjust the osal clock and timers * Msec - elapsed time in milli seconds */ extern void osalAdjustTimer( uint32 Msec ); /********************************************************************* *********************************************************************/ #ifdef __cplusplus } #endif #endif /* OSAL_CLOCK_H */