9653255cff
STM32L1, STM32L4 RTC: add periodic interrupts, update L1 RTC implementation
* STM32L4 RTC: add support experimental CONFIG_RTC_PERIODIC
* STM32 RTC: separate STM32L1 RTC into a separate file
STM32L1 RTC is very close to F4 or L4 versions, with two alarms
and periodic wakeup support so backported L4 peripheral to L1.
* RTC: add periodic alarms to upper and lower halves
Approved-by: Gregory Nutt <gnutt@nuttx.org>
74 lines
3.1 KiB
C
74 lines
3.1 KiB
C
/****************************************************************************
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* arch/arm/src/stm32/stm32_rtc.c
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*
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* Copyright (C) 2011, 2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "chip.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/* This file is only a thin shell that includes the correct RTC implementation
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* for the selected STM32 family. The correct file cannot be selected by
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* the make system because it needs the intelligence that only exists in
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* chip.h that can associate an STM32 part number with an STM32 family.
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*/
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/* The STM32 F1 has a simple battery-backed counter for its RTC and has a
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* separate block for the BKP registers.
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*/
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#if defined(CONFIG_STM32_STM32F10XX)
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# include "stm32_rtcounter.c"
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/* The other families use a more traditional Realtime Clock/Calendar (RTCC) with
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* broken-out data/time in BCD format. The backup registers are integrated into
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* the RTCC in these families.
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*/
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#elif defined(CONFIG_STM32_STM32F20XX) || \
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defined(CONFIG_STM32_STM32F30XX)
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# include "stm32_rtcc.c"
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#elif defined(CONFIG_STM32_STM32L15XX)
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# include "stm32l15xxx_rtcc.c"
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#elif defined(CONFIG_STM32_STM32F4XXX)
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# include "stm32f40xxx_rtcc.c"
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#endif
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