b4a33b5ec0
Uros Platise has submitted the ICLA and we can migrate the licenses to Apache. David Sidrane has submitted the ICLA and we can migrate the licenses to Apache. Bob Feretich has submitted the ICLA and we can migrate the licenses to Apache. Gregory Nutt has submitted the SGA and we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
178 lines
5.8 KiB
C
178 lines
5.8 KiB
C
/****************************************************************************
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* arch/arm/src/stm32f7/stm32_rtc.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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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#ifndef __ARCH_ARM_SRC_STM32F7_STM32_RTC_H
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#define __ARCH_ARM_SRC_STM32F7_STM32_RTC_H
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#include <nuttx/config.h>
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#include "chip.h"
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/* The STMF7 family use a more traditional Realtime Clock/Calendar (RTCC)
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* with broken-out data/time in BCD format. The backup registers are
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* integrated into the RTCC in these families.
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*/
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#include "hardware/stm32_rtcc.h"
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#include "stm32_alarm.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define STM32_RTC_PRESCALER_SECOND 32767 /* Default prescaler to get a second base */
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#define STM32_RTC_PRESCALER_MIN 1 /* Maximum speed of 16384 Hz */
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#if !defined(CONFIG_STM32F7_RTC_MAGIC)
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# define CONFIG_STM32F7_RTC_MAGIC (0xfacefeed)
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#endif
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#if !defined(CONFIG_STM32F7_RTC_MAGIC_TIME_SET)
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# define CONFIG_STM32F7_RTC_MAGIC_TIME_SET (0xf00dface)
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#endif
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#if !defined(CONFIG_STM32F7_RTC_MAGIC_REG)
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# define CONFIG_STM32F7_RTC_MAGIC_REG (0)
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#endif
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#define RTC_MAGIC CONFIG_STM32F7_RTC_MAGIC
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#define RTC_MAGIC_TIME_SET CONFIG_STM32F7_RTC_MAGIC_TIME_SET
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#define RTC_MAGIC_REG STM32_RTC_BKR(CONFIG_STM32F7_RTC_MAGIC_REG)
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifndef __ASSEMBLY__
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/****************************************************************************
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* Public Data
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****************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: stm32_rtc_getdatetime_with_subseconds
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*
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* Description:
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* Get the current date and time from the date/time RTC. This interface
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* is only supported by the date/time RTC hardware implementation.
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* It is used to replace the system timer. It is only used by the RTOS
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* during initialization to set up the system time when CONFIG_RTC and
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* CONFIG_RTC_DATETIME are selected (and CONFIG_RTC_HIRES is not).
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*
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* NOTE: The sub-second accuracy is returned through 'nsec'.
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*
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* Input Parameters:
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* tp - The location to return the high resolution time value.
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* nsec - The location to return the subsecond time value.
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno on failure
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*
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****************************************************************************/
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#ifdef CONFIG_STM32F7_HAVE_RTC_SUBSECONDS
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int stm32_rtc_getdatetime_with_subseconds(FAR struct tm *tp, FAR long *nsec);
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#endif
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/****************************************************************************
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* Name: stm32_rtc_setdatetime
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*
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* Description:
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* Set the RTC to the provided time. RTC implementations which provide
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* up_rtc_getdatetime() (CONFIG_RTC_DATETIME is selected) should provide
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* this function.
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*
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* Input Parameters:
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* tp - the time to use
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno on failure
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*
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****************************************************************************/
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#ifdef CONFIG_RTC_DATETIME
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struct tm;
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int stm32_rtc_setdatetime(FAR const struct tm *tp);
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#endif
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/****************************************************************************
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* Name: stm32_rtc_havesettime
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*
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* Description:
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* Check if RTC time has been set.
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*
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* Returned Value:
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* Returns true if RTC date-time have been previously set.
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*
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****************************************************************************/
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bool stm32_rtc_havesettime(void);
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/****************************************************************************
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* Name: stm32_rtc_lowerhalf
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*
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* Description:
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* Instantiate the RTC lower half driver for the STM32. General usage:
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*
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* #include <nuttx/timers/rtc.h>
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* #include "stm32_rtc.h>
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*
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* struct rtc_lowerhalf_s *lower;
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* lower = stm32_rtc_lowerhalf();
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* rtc_initialize(0, lower);
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* On success, a non-NULL RTC lower interface is returned. NULL is
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* returned on any failure.
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*
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****************************************************************************/
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#ifdef CONFIG_RTC_DRIVER
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struct rtc_lowerhalf_s;
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FAR struct rtc_lowerhalf_s *stm32_rtc_lowerhalf(void);
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#endif
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_ARM_SRC_STM32F7_STM32_RTC_H */
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