104 lines
4.3 KiB
C
104 lines
4.3 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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* Copyright (c) 2015 Daniel Campora
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H
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#define MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H
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// The number of seconds between 1970/1/1 and 2000/1/1 is calculated using:
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// time.mktime((2000,1,1,0,0,0,0,0,0)) - time.mktime((1970,1,1,0,0,0,0,0,0))
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#define TIMEUTILS_SECONDS_1970_TO_2000 (946684800ULL)
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typedef struct _timeutils_struct_time_t {
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uint16_t tm_year; // i.e. 2014
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uint8_t tm_mon; // 1..12
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uint8_t tm_mday; // 1..31
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uint8_t tm_hour; // 0..23
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uint8_t tm_min; // 0..59
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uint8_t tm_sec; // 0..59
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uint8_t tm_wday; // 0..6 0 = Monday
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uint16_t tm_yday; // 1..366
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} timeutils_struct_time_t;
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bool timeutils_is_leap_year(mp_uint_t year);
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mp_uint_t timeutils_days_in_month(mp_uint_t year, mp_uint_t month);
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mp_uint_t timeutils_year_day(mp_uint_t year, mp_uint_t month, mp_uint_t date);
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void timeutils_seconds_since_2000_to_struct_time(mp_uint_t t,
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timeutils_struct_time_t *tm);
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mp_uint_t timeutils_seconds_since_2000(mp_uint_t year, mp_uint_t month,
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mp_uint_t date, mp_uint_t hour, mp_uint_t minute, mp_uint_t second);
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mp_uint_t timeutils_mktime_2000(mp_uint_t year, mp_int_t month, mp_int_t mday,
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mp_int_t hours, mp_int_t minutes, mp_int_t seconds);
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// Select the Epoch used by the port.
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#if MICROPY_EPOCH_IS_1970
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static inline void timeutils_seconds_since_epoch_to_struct_time(uint64_t t, timeutils_struct_time_t *tm) {
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// TODO this will give incorrect results for dates before 2000/1/1
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return timeutils_seconds_since_2000_to_struct_time(t - TIMEUTILS_SECONDS_1970_TO_2000, tm);
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}
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static inline uint64_t timeutils_mktime(mp_uint_t year, mp_int_t month, mp_int_t mday, mp_int_t hours, mp_int_t minutes, mp_int_t seconds) {
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return timeutils_mktime_2000(year, month, mday, hours, minutes, seconds) + TIMEUTILS_SECONDS_1970_TO_2000;
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}
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static inline uint64_t timeutils_seconds_since_epoch(mp_uint_t year, mp_uint_t month,
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mp_uint_t date, mp_uint_t hour, mp_uint_t minute, mp_uint_t second) {
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return timeutils_seconds_since_2000(year, month, date, hour, minute, second) + TIMEUTILS_SECONDS_1970_TO_2000;
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}
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static inline mp_uint_t timeutils_seconds_since_epoch_from_nanoseconds_since_1970(uint64_t ns) {
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return ns / 1000000000ULL;
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}
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static inline uint64_t timeutils_nanoseconds_since_epoch_to_nanoseconds_since_1970(uint64_t ns) {
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return ns;
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}
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#else // Epoch is 2000
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#define timeutils_seconds_since_epoch_to_struct_time timeutils_seconds_since_2000_to_struct_time
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#define timeutils_seconds_since_epoch timeutils_seconds_since_2000
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#define timeutils_mktime timeutils_mktime_2000
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static inline uint64_t timeutils_seconds_since_epoch_to_nanoseconds_since_1970(mp_uint_t s) {
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return ((uint64_t)s + TIMEUTILS_SECONDS_1970_TO_2000) * 1000000000ULL;
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}
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static inline mp_uint_t timeutils_seconds_since_epoch_from_nanoseconds_since_1970(uint64_t ns) {
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return ns / 1000000000ULL - TIMEUTILS_SECONDS_1970_TO_2000;
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}
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static inline int64_t timeutils_nanoseconds_since_epoch_to_nanoseconds_since_1970(int64_t ns) {
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return ns + TIMEUTILS_SECONDS_1970_TO_2000 * 1000000000ULL;
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}
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#endif
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#endif // MICROPY_INCLUDED_LIB_TIMEUTILS_TIMEUTILS_H
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