83680c41db
Store the RTC value in the .uninitialized section, but make sure to flank it with some known values. That way we can determine if the RTC value has been initialized, or if it's random uninitialized garbage. As part of this, add a `common_hal_rtc_init()` routine to determine if the value is correct, or reset it to 0 if it is not valid. Signed-off-by: Sean Cross <sean@xobs.io>
35 lines
1.4 KiB
C
35 lines
1.4 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) 2018 Noralf Trønnes
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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_NRF_COMMON_HAL_RTC_RTC_H
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#define MICROPY_INCLUDED_NRF_COMMON_HAL_RTC_RTC_H
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extern void rtc_init(void);
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extern void rtc_reset(void);
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extern void common_hal_rtc_init(void);
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#endif // MICROPY_INCLUDED_NRF_COMMON_HAL_RTC_RTC_H
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