David Smart
Simple time management w/o the Network interface
Diff: TimeInterface.h
- Revision:
- 0:e8e62dfee5eb
- Child:
- 1:b78c91e34eda
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/TimeInterface.h Fri Oct 11 20:53:30 2019 +0000
@@ -0,0 +1,594 @@
+
+#ifndef TIMEINTERFACE_H
+#define TIMEINTERFACE_H
+#include "mbed.h"
+#include <ctime>
+
+//#include "NTPClient.h"
+
+// Special Registers and their usage:
+// GPREG0: 32 bits
+// low word: time zone offset (-720 to +720)
+// high word: 2's complement of low word for integrity checking
+// GPREG1: 32 bits
+// time_t value when the clock was last set
+
+
+extern "C" {
+#include "time.h" // uses some std::time-functions
+}
+
+/// The tm_ex structure is patterned after the traditional tm struct, however
+/// it adds an element - the time zone offset in minutes. From this, it is then
+/// readily able to create a "local time" instead of simply a UTC time.
+///
+struct tm_ex
+{
+ int tm_sec; ///<! seconds, 0 to 59.
+ int tm_min; ///<! minutes, 0 to 59.
+ int tm_hour; ///<! hours, 0 to 23.
+ int tm_mday; ///<! monthday 1 to 31.
+ int tm_mon; ///<! month 0 to 11.
+ int tm_year; ///<! years since 1900.
+ int tm_wday; ///<! days since sunday 0 to 6.
+ int tm_yday; ///<! days since 1 Jan 0 to 365.
+ int tm_isdst; ///<! is daylight savings time.
+ int tm_tzo_min; ///<! localtime zone offset in minutes (_ex element)
+};
+
+/// TimeInterface class is much like the normal c-style time.h interface, but
+/// is extended with time-zone support, and clock-adjustment support (which
+/// permits tuning the clock) for more accuracy.
+///
+/// Additionally, strptime was integrated, which can extract the time from
+/// a text string. A formatter is used, so it cannot parse an arbitrary string.
+///
+/// Within this class are the normal time.h methods, simply
+/// exposed here for one consistent interface.
+///
+/// @note This class uses the special battery backed registers
+/// GPREG0 and GPREG1 for TimeInterface data.
+///
+/// @note In mbed library ver 84, the gmtime method is defective,
+/// and calls to this function return junk data. The
+/// gmtime method in this library actually uses localtime,
+/// but manages the time-zone offset as it does so.
+///
+/// @code
+/// // TimeInterface Architecture and APIs
+/// //
+/// // +--------+
+/// // | clock |----> clock_t clock()
+/// // +--------+
+/// //
+/// // +--------+
+/// // | |<------------ setTime(char * server, uint16_t port, uint32_t timeout)
+/// // | NTP |<-----------> Ethernet
+/// // | |----+
+/// // +--------+ |
+/// // |
+/// // +--------+ |
+/// // | RTC |<---+-------- set_time(time_t t, int16_t tzo)
+/// // | |<------------ adjust_sec(int32_t)
+/// // | |<------------ set_cal(int32_t)
+/// // | |------------> int32_t get_cal()
+/// // | |------------> time_t time(time_t *)
+/// // | |------+
+/// // +--------+ |
+/// // |
+/// // +--------+ |
+/// // | |<---- | <---- set_dst(bool dst)
+/// // | |<---- | <---- set_dst(char * start_dst, char * end_dst)
+/// // | |----- | ----> bool get_dst()
+/// // |dst_pair|---+ | +----------+
+/// // +--------+ | | | |
+/// // | +->| |
+/// // +--------+ +---->|time_local|--------> time_t timelocal(time_t *)
+/// // | tzo |<--------| |
+/// // | | +----------+
+/// // | |<------------ set_tzo_min(int16_t)
+/// // | |------------> int16_t get_tzo_min()
+/// // +--------+
+/// //
+/// // +--------+ +--------------------------+
+/// // | time_t | ---> char * ctime(time_t *) ----> | buffer |
+/// // | value | | Www Mmm dd hh:mm:ss yyyy |
+/// // +--------+ +- char * asctime(tm_ex *) -> +--------------------------+
+/// // ^ | |
+/// // | | | +-----------------+
+/// // | | +-------------------------------- | tm_ex |
+/// // | | | .tm_sec |
+/// // | +- tm_ex * gmtime(const time_t *) -----> | .tm_min |
+/// // | | | .tm_hour |
+/// // | +- tm_ex * localtime(const time_t *) --> | .tm_mday |
+/// // | | .tm_mon |
+/// // +---- time_t mktime(struct tm_ex *) ------- | .tm_year |
+/// // | .tm_wday |
+/// // | .tm_yday |
+/// // +---------------------------------------------> | .tm_isdst |
+/// // | +-------------------------------------------- | .tm_tzo_min |
+/// // | | +-----------------+
+/// // | | +--------------------------+
+/// // | +- strftime(char * ptr, ..., tm_ex *) --> | buffer |
+/// // +----strptime(char * buf, ..., tm_ex *) --- | Www Mmm dd hh:mm:ss yyyy |
+/// // +--------------------------+
+/// // double difftime(time_t end, time_t)
+/// //
+/// @endcode
+///
+class TimeInterface
+ {
+public:
+ /// Constructor for the TimeInterface class, which does minimal initialization.
+ ///
+ /// @param[in] net is optional and provides the EthernetInterface which is
+ /// used if you want to sync to an NTP server
+ ///
+ /// @code
+ /// EthernetInterface net;
+ /// TimeInterface ntp(&net);
+ /// ...
+ /// ntp.set_tzo_min(-6 * 60);
+ /// if (NTP_OK == ntp.setTime("time.nist.gov", 123, 10)) {
+ /// time_t tNow = ntp.timelocal();
+ /// printf("time is %s\r\n", ntp.ctime(&tNow));
+ /// }
+ /// ...
+ /// @endcode
+ ///
+ TimeInterface(void *m_net = NULL);
+
+ /// Destructor, normally not used, because it is typically kept for the life
+ /// of the program.
+ ///
+ ~TimeInterface();
+
+ /// Gets the system elapsed time in CLOCKS_PER_SEC tics.
+ ///
+ /// Divide the returned value by CLOCKS_PER_SEC to get time in seconds.
+ ///
+ /// @code
+ /// clock_t tstart, tend;
+ /// ...
+ /// tstart = clock();
+ /// // do something long
+ /// tend = clock();
+ /// printf("Elapsed time is %5.3f\r\n", (float)(tend - tstart)/CLOCKS_PER_SEC);
+ /// ...
+ /// @endcode
+ ///
+ /// @returns elapsed tics.
+ ///
+ clock_t clock(void);
+
+ /// Gets the current time as a UTC time value, optionally writing it
+ /// to a provided buffer.
+ ///
+ /// This reads the real time clock and returns the current UTC time.
+ ///
+ /// @code
+ /// time_t t_ref1, t_ref2, t_ref3;
+ /// t_ref1 = time(NULL);
+ /// t_ref2 = t.time();
+ /// (void)t.time(&t_ref3);
+ /// @endcode
+ ///
+ /// @param[out] timer is an optional pointer to a time_t value that will
+ /// be written with the current time. This pointer is ignored
+ /// when NULL.
+ /// @returns the UTC time value.
+ ///
+ time_t time(time_t * timer = NULL);
+
+ /// Gets the current time as a LOCAL time value, optionally writing it
+ /// to a provided buffer.
+ ///
+ /// This reads the real time clock and returns the current time, adjusted
+ /// for the local time zone and daylight savings time.
+ ///
+ /// @code
+ /// time_t t_ref2, t_ref3;
+ /// t_ref2 = t.time();
+ /// t.timelocal(&t_ref3);
+ /// @endcode
+ ///
+ /// @param[out] timer is an optional pointer to a time_t value that will
+ /// be written. This pointer is ignored when NULL.
+ /// @returns the LOCAL time value (UTC adjusted for the LOCAL time zone and dst).
+ ///
+ time_t timelocal(time_t * timer = NULL);
+
+ /// Convert a time value structure into an ASCII printable time "Www Mmm dd hh:mm:ss yyyy"
+ ///
+ /// @note Watch out for race conditions as this returns a pointer to a
+ /// shared buffer.
+ /// @note Unlike the standard ctime function, this version DOES NOT append
+ /// a newline character to the buffer.
+ ///
+ /// @code
+ /// time_t tNow = timelocal();
+ /// printf("time is %s\r\n", ctime(tNow));
+ /// @endcode
+ ///
+ /// @param[in] timer is a pointer to a time_t value containing the time to convert.
+ /// @returns a pointer to a buffer containing the string.
+ ///
+ char * ctime(const time_t * timer);
+
+ /// Convert a tm_ex structure into an ASCII printable "time Www Mmm dd hh:mm:ss yyyy"
+ ///
+ /// @note Unlike the standard asctime, this takes a pointer to a tm_ex, which
+ /// has daylight savings time flag and a time zone offset element.
+ ///
+ /// @note Watch out for race conditions as this returns a pointer to a
+ /// shared buffer.
+ ///
+ /// @note Unlike the standard ctime function, this version DOES NOT append
+ /// a newline character to the buffer.
+ ///
+ /// @code
+ /// time_t tNow = timelocal();
+ /// tm_ex * tEx = localtime(&tNow);
+ /// printf("Time is %s\r\n", asctime(tEx));
+ /// @endcode
+ ///
+ /// @param[in] timeptr is a pointer to a tm_ex structure containing the time to convert.
+ /// @returns a pointer to a private buffer containing the string.
+ ///
+ char * asctime(const struct tm_ex *timeptr);
+
+ /// Compute the difference in seconds between two time values.
+ ///
+ /// @code
+ /// time_t tstart, tend;
+ /// ...
+ /// tstart = time();
+ /// // do some long process now
+ /// tend = time();
+ /// printf("Elapsed time is %5.3f\r\n", tend - tstart);
+ /// ...
+ /// @endcode
+ ///
+ /// @param[in] end is the end time to compare to the beginning time.
+ /// @param[in] beginning time is compared to the end time.
+ /// @return the difference in seconds, as a double.
+ ///
+ double difftime(time_t end, time_t beginning);
+
+ /// Convert the referenced time_t value to a tm_ex structure in UTC/GMT format.
+ ///
+ /// @note Unlike the standard asctime, this return a pointer to a tm_ex, which
+ /// has a time zone offset element.
+ ///
+ /// @note Watch out for race conditions as this returns a pointer to a
+ /// shared buffer.
+ ///
+ /// @param[in] timer is a pointer to a time_t structure to convert.
+ /// @returns pointer to a tm_ex structure.
+ ///
+ struct tm_ex * gmtime(const time_t * timer);
+
+
+ /// Convert the referenced time_t value to a tm structure in local format.
+ ///
+ /// This method leverages the time zone offset applied with @see set_tzo()
+ /// and the daylight savings time flag applied with @see set_dst().
+ ///
+ /// @note Watch out for race conditions as this returns a pointer to a
+ /// shared buffer.
+ ///
+ /// @code
+ /// time_t tNow = timelocal();
+ /// tm_ex * tEx = localtime(&tNow);
+ /// @endcode
+ ///
+ /// @param[in] timer is a pointer to a time_t structure to convert.
+ /// @returns pointer to a tm structure.
+ ///
+ struct tm_ex * localtime(const time_t * timer);
+
+ /// Convert a tm_ex structure (an extended time structure) to a time_t
+ /// value.
+ ///
+ /// This function also sets the tzo_min element of the tm_ex structure
+ /// from the previously set tzo_min.
+ ///
+ /// @param[in] timeptr is a pointer to a tm_ex structure.
+ /// @returns the computed time_t value.
+ ///
+ time_t mktime(struct tm_ex * timeptr);
+
+ /// Presents a time value in a user specified format, into a user specified buffer.
+ ///
+ /// @param[out] ptr is a pointer to the user buffer.
+ /// @param[in] maxsize is the size of the user buffer.
+ /// @param[in] format is a pointer to the special strftime format specification.
+ /// see format options.
+ /// @param[in] timeptr is a pointer to the tm_ex structure.
+ /// @returns the total number of characters copied into the buffer.
+ ///
+ /// format options:
+ /// - %%a Abbreviated weekday name e.g. Thu
+ /// - %%A Full weekday name e.g. Thursday
+ /// - %%b Abbreviated month name e.g. Aug
+ /// - %%B Full month name e.g. August
+ /// - %%c Date and time representation e.g. Thu Aug 23 14:55:02 2001
+ /// - %%C Year divided by 100 and truncated to integer (00-99) e.g. 20
+ /// - %%d Day of the month, zero-padded (01-31) e.g. 23
+ /// - %%D Short MM/DD/YY date, equivalent to %%m/%%d/%%y e.g. 08/23/01
+ /// - %%e Day of the month, space-padded ( 1-31) e.g. 23
+ /// - %%F Short YYYY-MM-DD date, equivalent to %%Y-%%m-%%d e.g. 2001-08-23
+ /// - %%g Week-based year, last two digits (00-99) e.g. 01
+ /// - %%G Week-based year e.g. 2001
+ /// - %%h Abbreviated month name * (same as %%b) e.g. Aug
+ /// - %%H Hour in 24h format (00-23) e.g. 14
+ /// - %%I Hour in 12h format (01-12) e.g. 02
+ /// - %%j Day of the year (001-366) e.g. 235
+ /// - %%m Month as a decimal number (01-12) e.g. 08
+ /// - %%M Minute (00-59) e.g. 55
+ /// - %%n New-line character ('\\n')
+ /// - %%p AM or PM designation e.g. PM
+ /// - %%r 12-hour clock time e.g. 02:55:02 pm
+ /// - %%R 24-hour HH:MM time, equivalent to %%H:%%M e.g. 14:55
+ /// - %%S Second (00-61) e.g. 02
+ /// - %%t Horizontal-tab character ('\t')
+ /// - %%T ISO 8601 time format (HH:MM:SS), equivalent to %%H:%%M:%%S e.g. 14:55:02
+ /// - %%u ISO 8601 weekday as number with Monday as 1 (1-7) e.g. 4
+ /// - %%U Week number with the first Sunday as the first day of week one (00-53) e.g. 33
+ /// - %%V ISO 8601 week number (00-53) e.g. 34
+ /// - %%w Weekday as a decimal number with Sunday as 0 (0-6) e.g. 4
+ /// - %%W Week number with the first Monday as the first day of week one (00-53) e.g. 34
+ /// - %%x Date representation e.g. 08/23/01
+ /// - %%X Time representation e.g. 14:55:02
+ /// - %%y Year, last two digits (00-99) e.g. 01
+ /// - %%Y Year e.g. 2001
+ /// - %%z ISO 8601 offset from UTC in timezone (1 minute=1, 1 hour=100) (e.g. +100)
+ /// If timezone cannot be determined, no characters
+ /// - %%Z Timezone name or abbreviation (e.g. CDT)
+ /// If timezone cannot be determined, no characters
+ /// - % A % sign
+ ///
+ size_t strftime(char * ptr, size_t maxsize, const char * format, const struct tm_ex * timeptr);
+
+
+ /// Convert a string, in a defined format, to a time value in a tm_ex structure.
+ ///
+ /// Most format details leveraged from The Open Group Base Specifications Issue 6
+ /// IEEE Std 1003.1, 2004 Edition
+ /// Copyright © 2001-2004 The IEEE and The Open Group, All Rights reserved.
+ ///
+ /// Modifications for mbed, and addition of the timezone format option by D. Smart
+ ///
+ /// @code
+ /// char timesample[] = "Jan 22 2017 01:32:48 UTC";
+ /// tm_ex tm;
+ /// strptime(timesample, "%b %d %Y %H:%M:%S %Z", &tm);
+ /// @endcode
+ ///
+ /// @param[in] buf is a pointer to the string to be parsed.
+ /// @param[in] format is a pointer to a format string. See the format options.
+ /// @param[out] tm is a pointer to a tm_ex struct.
+ /// @returns a pointer to the character following the last one parsed, or null on failure
+ ///
+ /// format options:
+ /// - %%a The day of the week, using the locale's weekday names; either the abbreviated or
+ /// full name may be specified.
+ /// - %%A Equivalent to %%a.
+ /// - %%b The month, using the locale's month names; either the abbreviated or full name
+ /// may be specified.
+ /// - %%B Equivalent to %%b.
+ /// - %%c Replaced by the locale's appropriate date and time representation.
+ /// - %%C The century number [00,99]; leading zeros are permitted but not required.
+ /// - %%d The day of the month [01,31]; leading zeros are permitted but not required.
+ /// - %%D The date as %%m / %%d / %%y.
+ /// - %%e Equivalent to %%d.
+ /// - %%h Equivalent to %%b.
+ /// - %%H The hour (24-hour clock) [00,23]; leading zeros are permitted but not required.
+ /// - %%I The hour (12-hour clock) [01,12]; leading zeros are permitted but not required.
+ /// - %%j The day number of the year [001,366]; leading zeros are permitted but not required.
+ /// - %%m The month number [01,12]; leading zeros are permitted but not required.
+ /// - %%M The minute [00,59]; leading zeros are permitted but not required.
+ /// - %%n Any white space.
+ /// - %%p The locale's equivalent of a.m or p.m.
+ /// - %%r 12-hour clock time using the AM/PM notation if t_fmt_ampm is not an empty string
+ /// in the LC_TIME portion of the current locale; in the POSIX locale, this shall be
+ /// equivalent to %%I : %%M : %%S %%p.
+ /// - %%R The time as %%H : %%M.
+ /// - %%S The seconds [00,60]; leading zeros are permitted but not required.
+ /// - %%t Any white space.
+ /// - %%T The time as %%H : %%M : %%S.
+ /// - %%U The week number of the year (Sunday as the first day of the week) as a decimal
+ /// number [00,53]; leading zeros are permitted but not required.
+ /// - %%w The weekday as a decimal number [0,6], with 0 representing Sunday; leading zeros
+ /// are permitted but not required.
+ /// - %%W The week number of the year (Monday as the first day of the week) as a decimal
+ /// number [00,53]; leading zeros are permitted but not required.
+ /// - %%x The date, using the locale's date format.
+ /// - %%X The time, using the locale's time format.
+ /// - %%y The year within century. When a century is not otherwise specified, values in
+ /// the range [69,99] shall refer to years 1969 to 1999 inclusive, and values in the
+ /// range [00,68] shall refer to years 2000 to 2068 inclusive; leading zeros shall be
+ /// permitted but shall not be required.
+ /// Note: It is expected that in a future version of IEEE Std 1003.1-2001
+ /// the default century inferred from a 2-digit year will change.
+ /// (This would apply to all commands accepting a 2-digit year as input.)
+ /// - %%Y The year, including the century (for example, 1988).
+ /// - %%Z The timezone offset, as a 3-letter sequence. Only a few whole-hour offsets
+ /// have been defined.
+ /// - %% Replaced by %.
+ ///
+ const char * strptime(const char *buf, char *fmt, struct tm_ex *tm);
+
+
+ // time zone functions
+
+ /// Set the internal RTC (clock) to the time value.
+ ///
+ /// The time valueshould be UTC time along with an offset of zero,
+ /// which then permits gmtime and localtime to be used appropriately.
+ /// Alternately, the time can be in localtime, and the offset is then
+ /// used to compute UTC to set the clock.
+ ///
+ /// @param[in] t should be the UTC time value to set the clock to. If the available
+ /// time value is local time, the optional time zone offset can
+ /// be provided so the system clock is UTC.
+ /// @param[in] tzo is the optional time zone offset in minutes when it is in
+ /// the range of -720 to +720 (-12 hours to + 12 hours). Any
+ /// other value is illegal and no change will be made.
+ ///
+ void set_time(time_t t, int16_t tzo_min = 0);
+
+ /// Set the time zone offset in minutes.
+ ///
+ /// This API should be used before any other methods that fetch
+ /// the RTC info.
+ ///
+ /// @param[in] tzo is the time zone offset in minutes when it is in
+ /// the range of -720 to +720 (-12 hours to + 12 hours). Any
+ /// other value is illegal and no change will be made.
+ ///
+ void set_tzo_min(int16_t tzo_min);
+
+ /// Get the time zone offset in minutes.
+ ///
+ /// @returns the time zone offset value in minutes. If the tzo was
+ /// never initialized, this returns zero.
+ ///
+ int16_t get_tzo_min(void);
+
+ /// Set the clock for local time to report whether the current
+ /// mode is standard or daylight savings time.
+ ///
+ /// return values for localtime will then be adjusted not only
+ /// for the time zone offset, but for dst.
+ ///
+ /// @param[in] dst is a boolean that should be set when dst is
+ /// the active mode.
+ /// @returns true, always.
+ ///
+ bool set_dst(bool dst);
+
+ /// Set the clock for auto-adjust local time based on
+ /// changing to standard or daylight savings time.
+ ///
+ /// return values for localtime will then be adjusted not only
+ /// for the time zone offset, but for dst.
+ ///
+ /// @param[in] dstStart is a string of the form "mm/dd,hh:mm"
+ /// representing when DST starts.
+ /// @param[in] dstStop is a string of the form "mm/dd,hh:mm"
+ /// representing when DST stops.
+ /// @returns true if the start and stop pair could be successfully
+ /// parsed.
+ ///
+ bool set_dst(const char * dstStart, const char * dstStop);
+
+ /// Get the current clock mode for daylight savings time.
+ ///
+ /// @returns true if clock is in dst mode.
+ ///
+ bool get_dst(void);
+
+ /// Get the time value when the clock was last set. This is most
+ /// often used in calibration of the clock.
+ ///
+ /// @returns time last set as a UTC time value.
+ ///
+ time_t get_timelastset(void);
+
+ /// get_cal will return the calibration register value
+ ///
+ /// This is the raw register value as a signed 32-bit value (even though
+ /// it is actually a 17-bit unsigned value with an additional 'direction' flag).
+ ///
+ /// @returns calibration settings ranging from -131071 to +131071
+ ///
+ int32_t get_cal();
+
+ /// set_cal will set the calibration register value
+ ///
+ /// This accepts a signed value to be used to set the calibration
+ /// registers. Setting the calibration value to zero disables the
+ /// calibration function.
+ ///
+ /// It is important to know the register function in order to use
+ /// this command, and this API is normally not used by external
+ /// application code. @See AdjustBySeconds for a user-friendly
+ /// API.
+ ///
+ /// @param[in] calibration value to use ranging from -131071 to +131071
+ /// @returns nothing
+ ///
+ void set_cal(int32_t calibration);
+
+ /// adjust_sec adjusts both the time and the calibration by seconds
+ ///
+ /// This will take a signed value, which is the current adjustment in seconds
+ /// to put the clock on the correct time. So, if the clock is behind by
+ /// 3 seconds, the value should be +3 to advance the clock accordingly.
+ /// It will then adjust the time, and it will attempt to adjust the
+ /// calibration factor to make the time more accurate.
+ ///
+ /// The adjustment can only be made if it has retained when the clock was
+ /// last set, in order to know by how much to adjust it. It is also most
+ /// accurate if several days have elapsed since the time was set.
+ ///
+ /// @note The current version only works if the calibration value
+ /// is zero when this adjustment is made.
+ ///
+ /// @param[in] adjustSeconds is the signed value by which to adjust the time to
+ /// correct it to the current actual time.
+ /// @returns true if the adjustment was made
+ /// @returns false if the adjustment could not be made
+ ///
+ bool adjust_sec(int32_t adjustSeconds);
+
+ /// Set the clock from an internet source (blocking)
+ ///
+ /// This function is the interface to NTPClient.
+ /// Blocks until completion
+ ///
+ /// @param[in] host NTP server IPv4 address or hostname (will be resolved via DNS)
+ /// @param[in] port port to use; defaults to 123
+ /// @param[in] timeout waiting timeout in ms (osWaitForever for blocking function, not recommended)
+ /// @returns NTP_OK on success,
+ /// @returns NTP_CONN if no network interface
+ /// @returns other NTP error code (<0) on failure
+ ///
+ //NTPResult setTime(const char* host, uint16_t port = NTP_DEFAULT_PORT, uint32_t timeout = NTP_DEFAULT_TIMEOUT);
+
+ // ntp interface functions
+private:
+ void * m_net;
+
+ typedef struct {
+ uint8_t MM;
+ uint8_t DD;
+ uint8_t hh;
+ uint8_t mm;
+ } dst_event_t;
+ typedef struct {
+ dst_event_t dst_start;
+ dst_event_t dst_stop;
+ } dst_event_pair_t;
+
+ bool parseDSTstring(dst_event_t * result, const char * dstr);
+
+ /// Performs a "simple" computation of two dates into minutes.
+ ///
+ /// Does not account for leap years or which month it is. Is
+ /// useful only for comparing which date/time came first, not for
+ /// computing the difference between them.
+ ///
+ /// @return "normalized" minutes since Jan 1 00:00.
+ ///
+ uint32_t minutesSinceJan(int mon, int day, int hr, int min);
+
+ dst_event_pair_t dst_pair;
+ bool dst; // true in dst mode
+ char result[30]; // holds the converted to text time string
+ time_t tresult; // holds the converted time structure.
+ struct tm_ex tm_ext;
+ };
+
+#endif // TIMEINTERFACE_H