1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
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 Callback support int the driver.
*/
#define RTC_SUPPORTS_CALLBACKS STM32_RTC_HAS_INTERRUPTS
/**
* @name Data offsets in RTC date and time registers
* @{
*/
#define RTC_TR_PM_OFFSET 22
#define RTC_TR_HT_OFFSET 20
#define RTC_TR_HU_OFFSET 16
#define RTC_TR_MNT_OFFSET 12
#define RTC_TR_MNU_OFFSET 8
#define RTC_TR_ST_OFFSET 4
#define RTC_TR_SU_OFFSET 0
#define RTC_DR_YT_OFFSET 20
#define RTC_DR_YU_OFFSET 16
#define RTC_DR_WDU_OFFSET 13
#define RTC_DR_MT_OFFSET 12
#define RTC_DR_MU_OFFSET 8
#define RTC_DR_DT_OFFSET 4
#define RTC_DR_DU_OFFSET 0
/** @} */
/**
* @brief RTC PRES register initializer.
*/
#define RTC_PRES(a, s) ((((a) - 1) << 16) | ((s) - 1))
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name Configuration options
* @{
*/
/**
* @brief RTC PRES register initialization.
* @note The default is calculated for a 32768Hz clock.
*/
#if !defined(STM32_RTC_PRES_VALUE) || defined(__DOXYGEN__)
#define STM32_RTC_PRES_VALUE RTC_PRES(32, 1024)
#endif
/*===========================================================================*/
/* 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 STM32_PCLK1 < (STM32_RTCCLK * 7)
#error "STM32_PCLK1 frequency is too low"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Structure representing an RTC driver.
*/
struct RTCDriver {
/**
* @brief Pointer to the RTC registers block.
*/
RTC_TypeDef *rtc;
};
/*===========================================================================*/
/* 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 RTCDateTime *timespec);
void rtc_lld_get_time(RTCDriver *rtcp, RTCDateTime *timespec);
#if STM32_RTC_NUM_ALARMS > 0
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);
#endif
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_RTC */
#endif /* _RTC_LLD_H_ */
/** @} */
|