source: S-port/trunk/Core/Inc/Time.h

#ifndef __TIME_H
#define __TIME_H
#include <stdint.h>

#define M41T82_ADDR     0xD0
#define SECONDS_TO_DAY     86400  // ñêîëüêî ñåêóíä â äíå
#define HOURS_TO_DAY       24     // ÷àñîâ â äíå
#define SECONDS_TO_HOUR    3600   // ñêîëüêî ñåêóíä â ÷àñå
#define SECONDS_TO_MIN     60     // ñêîëüêî ñåêóíä â ìèíóòå
#define YEAR_START         1970   // Ýïîõà þíèêñ
#define MONTH_DECEMBER     12     // äåêàáðü

#define SNTP_UPDATE_DELAY 64000

typedef enum {
  NON_LEAP = 0x00,
  LEAP     = 0x01
}leap_year_t;

typedef uint32_t time_t;

typedef struct{
        uint8_t Day;
        uint8_t Month;
        uint16_t Year;
}DataRTC_typeDef;

typedef struct{
        uint8_t mSec;
        uint8_t Sec;
        uint8_t Min;
        uint8_t Hour;
}TimeRTC_typeDef;

typedef struct{
        _Bool   WDT: 1;
        uint8_t ALR: 2;
        _Bool   BAT_LOW: 1;
        _Bool   TMR: 1;
        _Bool   OSC_FAIL: 1;
}FlagsRTC_typeDef;

typedef struct{
//      _Bool Enable;
//      int8_t timeZone;
        int8_t Correction;
        DataRTC_typeDef Data;
        TimeRTC_typeDef Time;
        FlagsRTC_typeDef Flags;
}RealTimeClock_typeDef;

void clock_init(void);
int32_t time_to_unix(RealTimeClock_typeDef *t);
void unix_to_time(RealTimeClock_typeDef *t, int32_t secsarg);

void set_system_time_NTP(uint32_t sec);
void get_system_time_NTP(int32_t *sec, uint32_t *msec);

uint8_t SetDisable_RTC(void);
uint8_t SetEnable_RTC(void);
uint8_t isEnable_RTC(void);
void ClearBitHT_RTC(void);
uint8_t SetCurrent_RTC(RealTimeClock_typeDef *ptrClock);
uint8_t GetCurrent_RTC(RealTimeClock_typeDef *ptrClock);
void GetCorrection_RTC(RealTimeClock_typeDef *ptrClock);
void SetCorrection_RTC(RealTimeClock_typeDef *ptrClock, int8_t corr);

#endif /* __TIME_H */