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For time-based functions that work with absolute time there is the need for an Epoch, to set the zero-point at which the absolute time starts counting. Such functions include time.time() and filesystem stat return values. And different ports may use a different Epoch. To make it clearer what functions use the Epoch (whatever it may be), and make the ports more consistent with their use of the Epoch, this commit renames all Epoch related functions to include the word "epoch" in their name (and remove references to "2000"). Along with this rename, the following things have changed: - mp_hal_time_ns() is now specified to return the number of nanoseconds since the Epoch, rather than since 1970 (but since this is an internal function it doesn't change anything for the user). - littlefs timestamps on the esp8266 have been fixed (they were previously off by 30 years in nanoseconds). Otherwise, there is no functional change made by this commit. Signed-off-by: Damien George <damien@micropython.org>
44 lines
1.8 KiB
C
44 lines
1.8 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, 2016 Damien P. George
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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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#include "py/obj.h"
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#include "lib/timeutils/timeutils.h"
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#include "lib/oofatfs/ff.h"
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#include "modmachine.h"
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DWORD get_fattime(void) {
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// TODO: Optimize division (there's no HW division support on ESP8266,
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// so it's expensive).
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uint32_t secs = (uint32_t)(pyb_rtc_get_us_since_epoch() / 1000000);
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timeutils_struct_time_t tm;
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timeutils_seconds_since_epoch_to_struct_time(secs, &tm);
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return ((DWORD)(tm.tm_year - 1980) << 25) | ((DWORD)tm.tm_mon << 21) | ((DWORD)tm.tm_mday << 16) |
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((DWORD)tm.tm_hour << 11) | ((DWORD)tm.tm_min << 5) | ((DWORD)tm.tm_sec >> 1);
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}
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