mirror of https://github.com/ARMmbed/mbed-os.git
106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
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/** \addtogroup platform */
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/** @{*/
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/* mbed Microcontroller Library
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* Copyright (c) 2017-2017 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MBED_MKTIME_H
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#define MBED_MKTIME_H
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#include <time.h>
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#include <stdbool.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* \defgroup platform_mktime mktime functions
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* @{
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*/
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/** Compute if a year is a leap year or not.
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*
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* @param year The year to test it shall be in the range [70:138]. Year 0 is
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* translated into year 1900 CE.
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* @return true if the year in input is a leap year and false otherwise.
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* @note - For use by the HAL only
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*/
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bool _rtc_is_leap_year(int year);
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/* Convert a calendar time into time since UNIX epoch as a time_t.
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*
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* This function is a thread safe (partial) replacement for mktime. It is
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* tailored around RTC peripherals needs and is not by any mean a complete
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* replacement of mktime.
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*
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* @param calendar_time The calendar time to convert into a time_t since epoch.
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* The fields from tm used for the computation are:
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* - tm_sec
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* - tm_min
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* - tm_hour
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* - tm_mday
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* - tm_mon
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* - tm_year
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* Other fields are ignored and won't be renormalized by a call to this function.
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* A valid calendar time is comprised between the 1st january of 1970 at
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* 00:00:00 and the 19th of january 2038 at 03:14:07.
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*
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* @return The calendar time as seconds since UNIX epoch if the input is in the
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* valid range. Otherwise ((time_t) -1).
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*
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* @note Leap seconds are not supported.
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* @note Values in output range from 0 to INT_MAX.
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* @note - For use by the HAL only
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*/
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time_t _rtc_mktime(const struct tm* calendar_time);
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/* Convert a given time in seconds since epoch into calendar time.
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*
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* This function is a thread safe (partial) replacement for localtime. It is
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* tailored around RTC peripherals specification and is not by any means a
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* complete of localtime.
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*
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* @param timestamp The time (in seconds) to convert into calendar time. Valid
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* input are in the range [0 : INT32_MAX].
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* @param calendar_time Pointer to the object which will contain the result of
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* the conversion. The tm fields filled by this function are:
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* - tm_sec
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* - tm_min
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* - tm_hour
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* - tm_mday
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* - tm_mon
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* - tm_year
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* - tm_wday
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* - tm_yday
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* The object remains untouched if the time in input is invalid.
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* @return true if the conversion was successful, false otherwise.
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*
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* @note - For use by the HAL only
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*/
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bool _rtc_localtime(time_t timestamp, struct tm* calendar_time);
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/** @}*/
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#ifdef __cplusplus
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}
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#endif
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#endif /* MBED_MKTIME_H */
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/** @}*/
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