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43 lines
1.5 KiB
C
43 lines
1.5 KiB
C
/*
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* Copyright 2024 Google LLC
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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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#pragma once
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#include <stdbool.h>
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//! @file rtc_private.h
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//!
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//! Functions private to implementations of RTC drivers for stm32 platforms
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//! Called by rtc_init to initialize the clock source.
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//!
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//! Warning! In some cases this function may detect an edge case and reset the system to address
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//! it! See the implementation for details.
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//!
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//! @return True if we managed to correctly get onto the LSE, false otherwise
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bool rtc_init_config_clock_source(void);
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//! Configure the LSE oscillator component of the RCC
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void rtc_init_config_lse_clock_source(void);
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//! Verify that the clock source is set up correctly.
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//!
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//! Warning! In some cases this function may detect an edge case and reset the system to address
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//! it! See the implementation for details.
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void rtc_init_verify_clock_source_config(void);
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//! Enable access to the RTC's backup registers
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void rtc_enable_backup_regs(void);
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