#ifndef __F41X_RTC__
#define __F41X_RTC__

#include "gps.h"

#define RTC_CAPTURE_BASE    0x00
#define RTC_RTC0CN          0x06
#define RTC_RTC0XCN         0x07
#define RTC_ALARM_BASE      0x08
#define RTC_RAMADDR         0x0E
#define RTC_RAMDATA         0x0F

#define RTC_SHORT(address)      (address | 0x10)
#define RTC_AUTO_READ(address)  (address | 0x40)

void rtc_write(u8 address, u8 value);
u8 rtc_read(u8 address);
void rtc_set_seconds(u32 *seconds);
void rtc_set_seconds_now();
void rtc_get_seconds(u32 *seconds);
void rtc_get_seconds_now();
void rtc_set_alarm(u32 *seconds);

void rtc_init();
void rtc_polling();

extern u32 xdata rtc_ms_next_interrupt;

#define RTC_FORECE_UPDATE_SYSTEM_TIME 5

#ifdef MAIN_C
void interrupt_rtc(void) interrupt 8
{
  // Fake 1pps output
  P1 &= ~(0x01);
  
  // LED toggle
  P1 ^= 0x80;
  
  // update system time if GPS is not alive.
  if(++global_ms_update_before_n_seconds > RTC_FORECE_UPDATE_SYSTEM_TIME){
    global_ms = rtc_ms_next_interrupt;
    global_ms_update_before_n_seconds = 0;
  }
  
  // Clear Flag and Alarm Disable
  {
    u8 rtc0cn = rtc_read(RTC_SHORT(RTC_RTC0CN));
    rtc_write(RTC_SHORT(RTC_RTC0CN), (rtc0cn & (~0x2C)));
  }
}
#endif

#endif /* __F41X_RTC__ */