228 lines
7.0 KiB
C
228 lines
7.0 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
|
|
2011 Giovanni Di Sirio.
|
|
|
|
This file is part of ChibiOS/RT.
|
|
|
|
ChibiOS/RT is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
ChibiOS/RT is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/*
|
|
Concepts and parts of this file have been contributed by Uladzimir Pylinsky
|
|
aka barthess.
|
|
*/
|
|
|
|
/**
|
|
* @file STM32/RTCv2/rtc_lld.h
|
|
* @brief STM32L1xx/STM32F2xx/STM32F4xx RTC low level driver header.
|
|
*
|
|
* @addtogroup RTC
|
|
* @{
|
|
*/
|
|
|
|
#ifndef _RTC_LLD_H_
|
|
#define _RTC_LLD_H_
|
|
|
|
#if HAL_USE_RTC || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Driver constants. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief This RTC implementation doesn't support callbacks.
|
|
*/
|
|
#define RTC_SUPPORTS_CALLBACKS FALSE
|
|
|
|
/*===========================================================================*/
|
|
/* Driver constants. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Two alarm comparators available on STM32F4x.
|
|
*/
|
|
#define RTC_ALARMS 2
|
|
|
|
/**
|
|
* @brief Callback enable masks.
|
|
*/
|
|
#define ALARMA_CB_FLAG 0x1
|
|
#define ALARMB_CB_FLAG 0x2
|
|
#define WAKEUP_CB_FLAG 0x4
|
|
#define TIMESTAMP_CB_FLAG 0x8
|
|
|
|
/*===========================================================================*/
|
|
/* Driver pre-compile time settings. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Derived constants and error checks. */
|
|
/*===========================================================================*/
|
|
|
|
#if HAL_USE_RTC && !STM32_HAS_RTC
|
|
#error "RTC not present in the selected device"
|
|
#endif
|
|
|
|
#if !(STM32_RTCSEL == STM32_RTCSEL_LSE) && \
|
|
!(STM32_RTCSEL == STM32_RTCSEL_LSI) && \
|
|
!(STM32_RTCSEL == STM32_RTCSEL_HSEDIV)
|
|
#error "invalid source selected for RTC clock"
|
|
#endif
|
|
|
|
#if RTC_SUPPORTS_CALLBACKS && !(HAL_USE_EXT)
|
|
#error "interrupts from RTC works only through EXTI on this platform"
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Driver data structures and types. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Type of a structure representing an RTC alarm time stamp.
|
|
*/
|
|
typedef struct RTCAlarm RTCAlarm;
|
|
|
|
/**
|
|
* @brief Type of a structure representing an RTC wakeup period.
|
|
*/
|
|
typedef struct RTCWakeup RTCWakeup;
|
|
|
|
/**
|
|
* @brief Type of a structure representing an RTC callbacks config.
|
|
*/
|
|
typedef struct RTCCallbackConfig RTCCallbackConfig;
|
|
|
|
/**
|
|
* @brief Type of an RTC alarm.
|
|
* @details Meaningful on platforms with more than 1 alarm comparator.
|
|
*/
|
|
typedef uint32_t rtcalarm_t;
|
|
|
|
/**
|
|
* @brief Type of an RTC event.
|
|
*/
|
|
typedef enum {
|
|
RTC_EVENT_WAKEUP = 0, /** Triggered every wakeup event. */
|
|
RTC_EVENT_ALARM_A = 1, /** Triggered on alarm A. */
|
|
RTC_EVENT_ALARM_B = 2, /** Triggered on alarm B. */
|
|
RTC_EVENT_TAMPER = 3, /** Triggered on Tamper event. */
|
|
RTC_EVENT_TIMESTAMP = 4, /** Triggered on TimeStamp event. */
|
|
} rtcevent_t;
|
|
|
|
/**
|
|
* @brief Structure representing an RTC time stamp.
|
|
*/
|
|
struct RTCTime {
|
|
/**
|
|
* @brief RTC date register in STM32 BCD format.
|
|
*/
|
|
uint32_t tv_date;
|
|
/**
|
|
* @brief RTC time register in STM32 BCD format.
|
|
*/
|
|
uint32_t tv_time;
|
|
/**
|
|
* @brief Fractional part of time.
|
|
*/
|
|
#if STM32_RTC_HAS_SUBSECONDS
|
|
uint32_t tv_msec;
|
|
#endif
|
|
};
|
|
|
|
/**
|
|
* @brief Structure representing an RTC alarm time stamp.
|
|
*/
|
|
struct RTCAlarm {
|
|
/**
|
|
* @brief Date and time of alarm in STM32 BCD.
|
|
*/
|
|
uint32_t tv_datetime;
|
|
};
|
|
|
|
/**
|
|
* @brief Structure representing an RTC periodic wakeup period.
|
|
*/
|
|
struct RTCWakeup {
|
|
/**
|
|
* @brief RTC WUTR register.
|
|
* @details Bits [15:0] contain value of WUTR register
|
|
* Bits [18:16] contain value of WUCKSEL bits in CR register
|
|
*
|
|
* @notes ((WUTR == 0) || (WUCKSEL == 3)) is forbidden combination.
|
|
*/
|
|
uint32_t wakeup;
|
|
};
|
|
|
|
/**
|
|
* @brief Structure representing an RTC callbacks config.
|
|
* @details It is bitmask. Set bit to enable callback, clear bit to disable.
|
|
* bit0 - alarmA
|
|
* bit1 - alarmB
|
|
* bit2 - wakeup
|
|
* bit3 - timestamp
|
|
*/
|
|
struct RTCCallbackConfig{
|
|
uint32_t cb_cfg;
|
|
};
|
|
|
|
/**
|
|
* @brief Structure representing an RTC driver.
|
|
*/
|
|
struct RTCDriver{
|
|
/**
|
|
* @brief Pointer to the RTC registers block.
|
|
*/
|
|
RTC_TypeDef *id_rtc;
|
|
/**
|
|
* @brief Current callback confuguration.
|
|
*/
|
|
const RTCCallbackConfig *cb_cfg;
|
|
};
|
|
|
|
/*===========================================================================*/
|
|
/* Driver macros. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* External declarations. */
|
|
/*===========================================================================*/
|
|
|
|
#if !defined(__DOXYGEN__)
|
|
extern RTCDriver RTCD1;
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
void rtc_lld_init(void);
|
|
void rtc_lld_set_time(RTCDriver *rtcp, const RTCTime *timespec);
|
|
void rtc_lld_get_time(RTCDriver *rtcp, RTCTime *timespec);
|
|
void rtc_lld_set_alarm(RTCDriver *rtcp,
|
|
rtcalarm_t alarm,
|
|
const RTCAlarm *alarmspec);
|
|
void rtc_lld_get_alarm(RTCDriver *rtcp,
|
|
rtcalarm_t alarm,
|
|
RTCAlarm *alarmspec);
|
|
void rtc_lld_set_periodic_wakeup(RTCDriver *rtcp, RTCWakeup *wakeupspec);
|
|
void rtc_lld_get_periodic_wakeup(RTCDriver *rtcp, RTCWakeup *wakeupspec);
|
|
void rtc_lld_set_callback(RTCDriver *rtcp, RTCCallbackConfig *cb_cfg);
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* HAL_USE_RTC */
|
|
|
|
#endif /* _RTC_LLD_H_ */
|
|
|
|
/** @} */
|