pc_udate.c

nucleus file NUCLEUS的文件系统源代码

/************************************************************************
*                                                                       
*       Copyright (c) 2002 by Accelerated Technology, Inc.              
*                                                                       
*  PROPRIETARY RIGHTS of Accelerated Technology are  involved in        
*  the subject matter of this material.  All manufacturing,             
*  reproduction, use, and sales rights pertaining to this subject       
*  matter are  governed by the license agreement.  The recipient of     
*     this software implicitly accepts the terms of the license.        
*                                                                       
*                                                                       
*************************************************************************
* FILE NAME                                     VERSION                 
*                                                                       
*       PC_UPDATE.C                             FILE  2.3.2              
*                                                                       
* COMPONENT                                                             
*                                                                       
*       Nucleus File                                                    
*                                                                       
* DESCRIPTION                                                           
*                                                                       
*       When the system needs to date stamp a file it will call this    
*       routine to get the current time and date. YOU must modify the   
*       shipped routine to support your hardware's time and date        
*       routines. If you don't modify this routine the file date on all 
*       files will be the same.                                         
*                                                                       
*       The source for this routine is in file pc_udate.c and is self   
*       explanatory.                                                    
*                                                                       
* DATA STRUCTURES                                                       
*                                                                       
*       None.                                                           
*                                                                       
* FUNCTIONS                                                             
*                                                                       
*       pc_getsysdate                       Get date and time from the  
*                                            host system.               
*                                                                       
* DEPENDENCIES                                                          
*                                                                       
*       pcdisk.h                            File common definitions     
*                                                                       
* NOTE: This module is linked in with File.lib.  After you make   *
*       changes, you must rebuild File.lib.                       *
*******************************************************************/

#include        "file\pcdisk.h"


#if (X86)
#define RTC_ADDR    0x0070
#define RTC_DATA    0x0071
int inp(unsigned portid);
int inport(int portid);

UINT16 convert_bios(UINT16 value)
{
UINT16      temp;


    if (value > 10)
    {
        temp = value/0x10;
        value = (UINT16)value - (6 * temp);
    }
    return(value);
}
#endif


/************************************************************************
* FUNCTION                                                              
*                                                                       
*       pc_getsysdate                                                   
*                                                                       
* DESCRIPTION                                                           
*                                                                       
*       Get date and time from the host system.                         
*                                                                       
* AUTHOR                                                                
*                                                                       
*       Kyoichiro Toda
*                                                                       
* INPUTS                                                                
*                                                                       
*       pd                                  Date stamping buffer.       
*                                                                       
* OUTPUTS                                                               
*                                                                       
*      Pointer of the buffer of date structure.                         
*                                                                       
*************************************************************************/
DATESTR *pc_getsysdate(DATESTR *pd)
{
UINT16      year;       /* relative to 1980 */ 
UINT16      month;      /* 1 - 12 */ 
UINT16      day;        /* 1 - 31 */ 
UINT16      hour;
UINT16      minute;
UINT16      sec;        /* Note: seconds are 2 second/per. ie 3 == 6 seconds */
UINT8       cenmsec;


 /* This code will work if yoiu have ANSI time functions. otherwise get 
    rid of it and look below where the time is wired to 3/28/8. you may modify
    that code to work in your environment. */
#include <time.h>
    struct tm *timeptr;
    time_t timer;

    time(&timer);
    timeptr = localtime(&timer);
   
    hour    =   (UINT16) timeptr->tm_hour;
    minute  =   (UINT16) timeptr->tm_min;
    sec     =   (UINT16) (timeptr->tm_sec/2); 
    /* Date comes back relative to 1900 (eg 93). The pc wants it relative to
       1980. so subtract 80 */
    year    =   (UINT16) (timeptr->tm_year-80);
    month   =   (UINT16) (timeptr->tm_mon+1);
    day     =   (UINT16) timeptr->tm_mday;
    cenmsec = 0;       /* 0 - 99 */

    /* This code is useless but very generic */
    /* Hardwire for now */
    /* 7:37:28 PM */
    hour = 19;
    minute = 37;
    sec = 14;
    /* 3-28-88 */
    year = 8;       /* relative to 1980 */ 
    month = 3;      /* 1 - 12 */ 
    day = 28;       /* 1 - 31 */
    cenmsec = 0;    /* 0 - 99 */

    pd->cmsec = cenmsec;
    pd->time = (UINT16) ( (hour << 11) | (minute << 5) | sec );
    pd->date = (UINT16) ( (year << 9) | (month << 5) | day );

    return(pd);
}