84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
/*
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* Copyright (C) 2019 Max Regan
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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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* 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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#pragma once
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#include <stdint.h>
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#include "Bsp/SystemTime.h"
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#include "Bsp/ReturnCode.h"
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#include "Bsp/Time.h"
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#include "stm32l0xx.h"
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namespace BSP {
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class RtcDriver final {
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public:
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RtcDriver() = delete;
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~RtcDriver() = delete;
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static SystemTimerImpl& get_system_timer() {
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return m_sys_timer;
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};
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static BSP::ReturnCode init();
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static void increment_seconds();
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static BSP::ReturnCode get_time(BSP::WallClockTime &tm_bcd);
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static BSP::ReturnCode set_time(const BSP::WallClockTime &tm_bcd);
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static BSP::ReturnCode set_wakeup_in(BSP::time_t wakeup_delay);
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private:
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static BSP::ReturnCode init_hw();
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static void enable_rtc_write();
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static void disable_rtc_write();
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static void enable_rtc_wakeup_interrupt();
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static void enable_periodic_alarm();
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static constexpr uint32_t LSE_CLOCK_FREQ = 32768;
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static RTC_TypeDef *m_rtc;
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class RtcSystemTimer : public BSP::SystemTimerImpl {
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public:
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RtcSystemTimer()
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: m_seconds(0)
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{}
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~RtcSystemTimer() {}
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BSP::time_t get_time() override;
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void increment_seconds();
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private:
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/** ~136 years. Good enough for me. */
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uint32_t m_seconds;
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static constexpr uint32_t LSE_CLOCK_FREQ = 32768;
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};
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static RtcSystemTimer m_sys_timer;
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};
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}
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