199 lines
5.4 KiB
C
Executable File
199 lines
5.4 KiB
C
Executable File
/*
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ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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/*
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Concepts and parts of this file have been contributed by Uladzimir Pylinsky
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aka barthess.
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*/
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/**
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* @file RTCv1/hal_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 HAL_RTC_LLD_H
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#define HAL_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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* @name Implementation capabilities
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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 One alarm comparator available.
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*/
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#define RTC_ALARMS 1
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/**
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* @brief Presence of a local persistent storage.
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*/
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#define RTC_HAS_STORAGE FALSE
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/** @} */
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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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* @name Configuration options
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* @{
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*/
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/*
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* RTC driver system settings.
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*/
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#define STM32_RTC_IRQ_PRIORITY 15
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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_RTCCLK == 0
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#error "RTC clock not enabled"
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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 FileStream specific methods.
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*/
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#define _rtc_driver_methods \
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_file_stream_methods
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/**
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* @brief Type of a structure representing an RTC alarm time 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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* @details Meaningful on platforms with more than 1 alarm comparator.
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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_SECOND = 0, /** Triggered every second. */
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RTC_EVENT_ALARM = 1, /** Triggered on alarm. */
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RTC_EVENT_OVERFLOW = 2 /** Triggered on counter overflow. */
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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 alarm time stamp.
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*/
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struct RTCAlarm {
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/**
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* @brief Seconds since UNIX epoch.
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*/
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uint32_t tv_sec;
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};
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#if RTC_HAS_STORAGE || defined(__DOXYGEN__)
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/**
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* @extends FileStream
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*
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* @brief @p RTCDriver virtual methods table.
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*/
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struct RTCDriverVMT {
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_rtc_driver_methods
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};
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#endif
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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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#if RTC_HAS_STORAGE || defined(__DOXYGEN__)
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/**
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* @brief Virtual Methods Table.
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*/
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const struct RTCDriverVMT *vmt;
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#endif
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/**
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* @brief Pointer to the RTC registers block.
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*/
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RTC_TypeDef *rtc;
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/**
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* @brief Callback pointer.
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*/
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rtccb_t callback;
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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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#if RTC_HAS_STORAGE
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extern struct RTCDriverVMT _rtc_lld_vmt;
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#endif
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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_set_prescaler(void);
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void rtc_lld_init(void);
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void rtc_lld_set_time(RTCDriver *rtcp, const RTCDateTime *timespec);
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void rtc_lld_get_time(RTCDriver *rtcp, RTCDateTime *timespec);
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void rtc_lld_set_alarm(RTCDriver *rtcp,
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rtcalarm_t alarm_number,
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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_number,
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RTCAlarm *alarmspec);
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void rtc_lld_set_callback(RTCDriver *rtcp, rtccb_t callback);
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void rtcSTM32GetSecMsec(RTCDriver *rtcp, uint32_t *tv_sec, uint32_t *tv_msec);
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void rtcSTM32SetSec(RTCDriver *rtcp, uint32_t tv_sec);
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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 /* HAL_RTC_LLD_H */
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/** @} */
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