circuitpython/ports/mimxrt/modtime.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019-2023 Damien P. George
* Copyright (c) 2020 Jim Mussared
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/obj.h"
#include "shared/timeutils/timeutils.h"
#include "fsl_snvs_lp.h"
// Return the localtime as an 8-tuple.
STATIC mp_obj_t mp_time_localtime_get(void) {
// Get current date and time.
snvs_lp_srtc_datetime_t t;
SNVS_LP_SRTC_GetDatetime(SNVS, &t);
mp_obj_t tuple[8] = {
mp_obj_new_int(t.year),
mp_obj_new_int(t.month),
mp_obj_new_int(t.day),
mp_obj_new_int(t.hour),
mp_obj_new_int(t.minute),
mp_obj_new_int(t.second),
mp_obj_new_int(timeutils_calc_weekday(t.year, t.month, t.day)),
mp_obj_new_int(timeutils_year_day(t.year, t.month, t.day)),
};
return mp_obj_new_tuple(8, tuple);
}
// Return the number of seconds since the Epoch.
STATIC mp_obj_t mp_time_time_get(void) {
snvs_lp_srtc_datetime_t t;
SNVS_LP_SRTC_GetDatetime(SNVS, &t);
// EPOCH is 1970 for this port, which leads to the following trouble:
// timeutils_seconds_since_epoch() calls timeutils_seconds_since_2000(), and
// timeutils_seconds_since_2000() subtracts 2000 from year, but uses
// an unsigned number for seconds, That causes an underrun, which is not
// fixed by adding the TIMEUTILS_SECONDS_1970_TO_2000.
// Masking it to 32 bit for year < 2000 fixes it.
return mp_obj_new_int_from_ull(
timeutils_seconds_since_epoch(t.year, t.month, t.day, t.hour, t.minute, t.second)
& (t.year < 2000 ? 0xffffffff : 0xffffffffffff)
);
}