rtc.h.svn-base

Spearhead2000 的 USB驱动程序

/*****************************************************************************/
/*                                                                           */
/* -- File:                  rtc.h                                           */
/* -- Author:                Stefano Romano                                  */
/* -- Description:           Header Real Time Clock                          */
/*                                                                           */
/* -- Modification History: - 1.0                                            */
/*****************************************************************************/
#ifndef __RCT_H
#define __RCT_H


#ifdef __cplusplus
extern  "C" {           /* C declarations in C++ */
#endif


#define RTC_BASE 0x12005000

typedef struct RTCController
{

  unsigned int TIME_REG;       //30000C00
  unsigned int DATE_REG;       //30000C04
  unsigned int ALARM_TIME_REG; //30000C08
  unsigned int ALARM_DATE_REG; //30000C0C
  unsigned int CONTROL_REG;    //30000C10
  unsigned int STATUS_REG;     //30000C14

} RTCController;

#define RTCCntl ((volatile struct RTCController*) (RTC_BASE))

/* Fields position */

/* TIME_REG & ALARM_TIME_REG*/
#define SECONDS_UNITS 0x0000000f //seconds units position 
#define SECONDS_TENS  0x00000070 //seconds tens position
#define MINUTES_UNITS 0x00000f00 //minutes units position  
#define MINUTES_TENS  0x00007000 //minutes tens position     
#define HOURS_UNITS   0x000f0000 //hours units position  
#define HOURS_TENS    0x00300000 //hours tens position     

/* DATE_REG & ALARM_DATE_REG */
#define DAYS_UNITS       0x0000000f //days units position 
#define DAYS_TENS        0x00000030 //days tens position
#define MONTHS_UNITS     0x00000100 //months units position  
#define MONTHS_TENS      0x00007000 //months tens position     
#define YEARS_UNITS      0x000f0000 //years units position  
#define YEARS_TENS       0x00f00000 //years tens position     
#define YEARS_HUNDREDS   0x0f000000 //years hundereds position     
#define YEARS_MILLENIUMS 0xf0000000 //years milleniums position     

/* Control values */

/* CONTROL_REG */
#define NO_MASK       0x00000000 //mask bits are 0x0000000f
#define MASK_SEC      0x00000001 //mask bit 0 
#define MASK_MIN      0x00000002 //mask bit 1
#define MASK_HOUR     0x00000004 //mask bit 2
#define MASK_DAY      0x00000008 //mask bit 3
#define MASK_MONTH    0x00000010 //mask bit 4
#define MASK_YEAR     0x00000020 //mask bit 5
#define PRESCALER_BYP 0x00000100 //bypass the prescaler: for debug only
#define TIME_BYP      0x00000200 //date reg equal to time reg: for debug only
#define INT_ENA       0x80000000 //interrupt enable

/* STATUS_REG */
#define CLK_UNCONNECTED 0x00000001 //timer isolated, time and date can be write
#define PEND_WR_TIME    0x00000004 //a write on time_reg is pending
#define PEND_WR_DATE    0x00000008 //a write on date_reg is pending
#define LOST_WR_TIME    0x00000010 //a write on time_reg is lost
#define LOST_WR_DATE    0x00000020 //a write on date_reg is lost
#define RTC_INT_CLR     0x80000000 //clear: int clear; read: int status

extern void rtc_test(void);
extern void rtc_init(void);

#ifdef __cplusplus
} /* C declarations in C++ */
#endif

#endif // __RTC_H