General

The three classes semf::Date, semf::Time and semf::DateTime provide time and date related functionality. semf::DateTime combines the features of semf::Date and semf::Time classes.

In contrast to semf::DateTime the additional class semf::app::Clock represents the date and time information from the semf::Rtc (real time clock).

Initialization of Clock

#include "semf/hardwareabstraction/stm32f4/stm32f4rtc.h"
#include "semf/utils/system/clock.h"
#include "main.h"
extern RTC_HandleTypeDef hrtc;  // CubeMX defines hardware handles in main.c
semf::Stm32F4Rtc rtc(hrtc);
semf::Clock clock(rtc);;

Usage

You can set the semf::app::Clock or semf::DateTime object to any time required.

// Setting clock to June 1st 2009 10:20:30 and 0 milliseconds

clock.setDateTime(0, 30, 20, 10, 1, 6, 2009);

Working with semf::DateTime objects you can save, modify and compare timestamps.

// ...
semf::DateTime datetime(clock);  // Initialization of datetime with current timestamp
while (1)
{
    if (clock.timeSpan(datetime) == 2000)  // 2000ms later
    {
        datetime = clock;  // Set dt to the value of Rtc
    }
}