time.c

最新版IAR FOR ARM（EWARM）5.11中的代码例子

/*****************************************************************************\
*              efs - General purpose Embedded Filesystem library              *
*          --------------------- -----------------------------------          *
*                                                                             *
* Filename :  time.c                                                          *
* Description : This file contains functions for time support                 *
*                                                                             *
* This program is free software; you can redistribute it and/or               *
* modify it under the terms of the GNU General Public License                 *
* as published by the Free Software Foundation; version 2                     *
* of the License.                                                             *
                                                                              *
* This program is distributed in the hope that it will be useful,             *
* but WITHOUT ANY WARRANTY; without even the implied warranty of              *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               *
* GNU General Public License for more details.                                *
*                                                                             *
* As a special exception, if other files instantiate templates or             *
* use macros or inline functions from this file, or you compile this          *
* file and link it with other works to produce a work based on this file,     *
* this file does not by itself cause the resulting work to be covered         *
* by the GNU General Public License. However the source code for this         *
* file must still be made available in accordance with section (3) of         *
* the GNU General Public License.                                             *
*                                                                             *
* This exception does not invalidate any other reasons why a work based       *
* on this file might be covered by the GNU General Public License.            *
*                                                                             *
*                                                    (c)2006 Lennart Yseboodt *
*                                                    (c)2006 Michael De Nil   *
\*****************************************************************************/

/*****************************************************************************/
#include "time.h"
#include "fs.h"
/*****************************************************************************/

euint16 fs_makeDate(void)
{
#ifndef DATE_TIME_SUPPORT
    return(0);
#else
    euint8 m,d;
    euint16 y;
    
    y = time_getYear()-1980;
    m = time_getMonth();
    d = time_getDay();
    
    return(
        (y>127?127<<9:(y&0x3F)<<9)   |
        ((m==0||m>12)?1:(m&0xF)<<5)  |
        ((d==0||d>31)?1:(d&0x1F))
    );
#endif
}
/*****************************************************************************/

euint16 fs_makeTime(void)
{
#ifndef DATE_TIME_SUPPORT
    return(0);
#else
    euint8 s,m,h;
    
    s = time_getSecond();
    m = time_getMinute();
    h = time_getHour();
    
    return(
        (h>23?0:(h&0x1F)<<11) |
        (m>59?0:(m&0x3F)<<5)  |
        (s>59?0:(s-s%2)/2)
    );
#endif
}
/*****************************************************************************/

euint8 fs_hasTimeSupport(void)
{
#ifdef DATE_TIME_SUPPORT
    return(1);
#else
    return(0);
#endif
}
/*****************************************************************************/