mirror of https://github.com/rusefi/ChibiOS.git
174 lines
5.2 KiB
C
174 lines
5.2 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file STM32/RTCv1/rtc_lld.h
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* @brief STM32 RTC subsystem low level driver header.
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*
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* @addtogroup RTC
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* @{
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*/
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#ifndef _RTC_LLD_H_
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#define _RTC_LLD_H_
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#if HAL_USE_RTC || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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/**
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* @brief This RTC implementation supports callbacks.
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*/
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#define RTC_SUPPORTS_CALLBACKS TRUE
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/**
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* @brief Two alarm comparators available on STM32F4x.
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*/
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#define RTC_ALARMS 2
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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#if HAL_USE_RTC && !STM32_HAS_RTC
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#error "RTC not present in the selected device"
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#endif
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#if !(STM32_RTC == STM32_RTC_LSE) && !(STM32_RTC == STM32_RTC_LSI) && \
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!(STM32_RTC == STM32_RTC_HSE)
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#error "invalid source selected for RTC clock"
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#endif
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#if RTC_SUPPORTS_CALLBACKS && !(HAL_USE_EXT)
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#error "interrupts from STM32 RTC works only through EXTI"
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#endif
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Type of a structure representing an RTC alarm stamp.
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*/
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typedef struct RTCAlarm RTCAlarm;
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/**
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* @brief Type of an RTC alarm.
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*/
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typedef uint32_t rtcalarm_t;
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/**
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* @brief Type of an RTC event.
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*/
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typedef enum {
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RTC_EVENT_WAKEUP = 0, /** Triggered every wakeup event. */
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RTC_EVENT_ALARM_A = 1, /** Triggered on alarm A. */
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RTC_EVENT_ALARM_B = 2, /** Triggered on alarm B. */
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RTC_EVENT_TAMPER = 3, /** Triggered on Tamper event. */
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RTC_EVENT_TIMESTAMP = 4, /** Triggered on TimeStamp event. */
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} rtcevent_t;
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/**
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* @brief Type of a generic RTC callback.
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*/
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typedef void (*rtccb_t)(RTCDriver *rtcp, rtcevent_t event);
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/**
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* @brief Structure representing an RTC time stamp.
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*/
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struct RTCTime {
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/**
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* @brief RTC date register in STM32 BCD format.
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*/
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uint32_t tv_date;
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/**
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* @brief RTC time register in STM32 BCD format.
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*/
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uint32_t tv_time;
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/**
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* @brief Fractional part of time.
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* @note If platform does not support subseconds than always zero.
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*/
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uint16_t tv_msec;
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};
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/**
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* @brief Structure representing an RTC alarm specification.
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*/
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struct RTCAlarm {
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/**
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* @brief Date and time of alarm in STM32 BCD.
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*/
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uint32_t tv_datetime;
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};
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/**
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* @brief Structure representing an RTC driver.
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*/
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struct RTCDriver{
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/**
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* @brief Callback pointer.
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*/
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rtccb_t rtc_cb;
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};
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#if !defined(__DOXYGEN__)
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extern RTCDriver RTCD1;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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void rtc_lld_init(void);
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void rtc_lld_set_time(RTCDriver *rtcp, const RTCTime *timespec);
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void rtc_lld_get_time(RTCDriver *rtcp, RTCTime *timespec);
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void rtc_lld_set_alarm(RTCDriver *rtcp,
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rtcalarm_t alarm,
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const RTCAlarm *alarmspec);
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void rtc_lld_get_alarm(RTCDriver *rtcp,
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rtcalarm_t alarm,
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RTCAlarm *alarmspec);
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void rtc_lld_set_callback(RTCDriver *rtcp, rtccb_t callback);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_RTC */
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#endif /* _RTC_LLD_H_ */
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/** @} */
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