69 lines
2.5 KiB
C
69 lines
2.5 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) 2022 Scott Shawcroft for Adafruit Industries
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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 "supervisor/fatfs.h"
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#include "py/runtime.h"
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#include "lib/oofatfs/ff.h"
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#include "shared-bindings/microcontroller/Processor.h"
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#include "shared-bindings/os/__init__.h"
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#include "shared-bindings/rtc/RTC.h"
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#include "shared-bindings/time/__init__.h"
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#include "shared/timeutils/timeutils.h"
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DWORD _time_override = 0;
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DWORD get_fattime(void) {
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if (_time_override > 0) {
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return _time_override;
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}
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#if CIRCUITPY_RTC
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timeutils_struct_time_t tm;
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common_hal_rtc_get_time(&tm);
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return ((tm.tm_year - 1980) << 25) | (tm.tm_mon << 21) | (tm.tm_mday << 16) |
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(tm.tm_hour << 11) | (tm.tm_min << 5) | (tm.tm_sec >> 1);
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#else
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return ((2016 - 1980) << 25) | ((9) << 21) | ((1) << 16) | ((16) << 11) | ((43) << 5) | (35 / 2);
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#endif
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}
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void override_fattime(DWORD time) {
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_time_override = time;
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}
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DWORD make_volid(void) {
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DWORD result;
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if (!common_hal_os_urandom((uint8_t *)&result, sizeof(result))) {
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#if CIRCUITPY_MICROCONTROLLER && COMMON_HAL_MCU_PROCESSOR_UID_LENGTH >= 4
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uint8_t raw_id[COMMON_HAL_MCU_PROCESSOR_UID_LENGTH];
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common_hal_mcu_processor_get_uid(raw_id);
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memcpy(&result, raw_id, sizeof(result));
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#else
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result = (DWORD)common_hal_time_monotonic_ns();
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#endif
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}
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return result;
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}
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