/* ---------------------------------------------------------------------------
 * fat_time.c                                          (c) 2008 Micro-key bv
 * ---------------------------------------------------------------------------
 * Micro-key bv
 * Industrieweg 28, 9804 TG Noordhorn
 * Postbus 92, 9800 AB Zuidhorn
 * The Netherlands
 * Tel: +31 594 503020
 * Fax: +31 594 505825
 * Email: support@microkey.nl  
 * Web: www.microkey.nl
 * ---------------------------------------------------------------------------
 * Description: 
 * ---------------------------------------------------------------------------
 * Version(s):  0.1, Aug 11, 2008, MMi
 *                   Creation.
 * ---------------------------------------------------------------------------
 */

/* ---------------------------------------------------------------------------
 * System include files
 * ---------------------------------------------------------------------------
 */
#include "LPC23xx.h"
#include "types.h"
/* ---------------------------------------------------------------------------
 * Application include files
 * ---------------------------------------------------------------------------
 */ 
#include "rtc.h"
/* ---------------------------------------------------------------------------
 * Local constant and macro definitions
 * ---------------------------------------------------------------------------
 */

/* ---------------------------------------------------------------------------
 * Global variable definitions
 * ---------------------------------------------------------------------------
 */

/* ---------------------------------------------------------------------------
 * Local variable definitions
 * ---------------------------------------------------------------------------
 */

/* ---------------------------------------------------------------------------
 * Local function definitions
 * ---------------------------------------------------------------------------
 */

UINT32 get_fattime (void)
{
    UINT32 complete_time;
    UINT16 time;
    UINT16 date;
    t_rtc rtcReadValue;

    rtcRead (&rtcReadValue);

    
    /* Read and calculate time stamps from RTC for the FAT time stamps      */
    time =((rtcReadValue.hour << 11)        /* Add hours (5 Bits)           */
          |(rtcReadValue.min  << 5)         /* Add minutes (6 Bits)         */
          |(rtcReadValue.sec / 2)           /* Add seconds (5 Bits) (* 2)   */
           );                               /* Seconds with resolution of 2 */
                                        
    /* Read and calculate date stamps from RTC for the FAT date stamps      */
    date =(((rtcReadValue.year - 1980) << 9) /* Add year (7 Bits)           */
           |(rtcReadValue.mon << 5)         /* Add month (4 Bits)           */
           |(rtcReadValue.day)              /* Add day (5 Bits)             */
            );                              /* Year since in 1980           */
    
    
    /* Calculate a 32 Bit value used by the FAT system                      */
    complete_time = ((date << 16) | time);
    
    return (complete_time);
        
}