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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 LeafLabs, LLC.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*****************************************************************************/
/**
* @file bkp.h
* @brief Backup register support.
*/
#ifndef _BKP_H_
#define _BKP_H_
#include "libmaple.h"
#ifdef __cplusplus
extern "C" {
#endif
#if defined(STM32_MEDIUM_DENSITY)
#define BKP_NR_DATA_REGS 10
#elif defined(STM32_HIGH_DENSITY)
#define BKP_NR_DATA_REGS 42
#endif
/** Backup peripheral register map type. */
typedef struct bkp_reg_map {
const uint32 RESERVED1; ///< Reserved
__io uint32 DR1; ///< Data register 1
__io uint32 DR2; ///< Data register 2
__io uint32 DR3; ///< Data register 3
__io uint32 DR4; ///< Data register 4
__io uint32 DR5; ///< Data register 5
__io uint32 DR6; ///< Data register 6
__io uint32 DR7; ///< Data register 7
__io uint32 DR8; ///< Data register 8
__io uint32 DR9; ///< Data register 9
__io uint32 DR10; ///< Data register 10
__io uint32 RTCCR; ///< RTC control register
__io uint32 CR; ///< Control register
__io uint32 CSR; ///< Control and status register
#ifdef STM32_HIGH_DENSITY
const uint32 RESERVED2; ///< Reserved
const uint32 RESERVED3; ///< Reserved
__io uint32 DR11; ///< Data register 11
__io uint32 DR12; ///< Data register 12
__io uint32 DR13; ///< Data register 13
__io uint32 DR14; ///< Data register 14
__io uint32 DR15; ///< Data register 15
__io uint32 DR16; ///< Data register 16
__io uint32 DR17; ///< Data register 17
__io uint32 DR18; ///< Data register 18
__io uint32 DR19; ///< Data register 19
__io uint32 DR20; ///< Data register 20
__io uint32 DR21; ///< Data register 21
__io uint32 DR22; ///< Data register 22
__io uint32 DR23; ///< Data register 23
__io uint32 DR24; ///< Data register 24
__io uint32 DR25; ///< Data register 25
__io uint32 DR26; ///< Data register 26
__io uint32 DR27; ///< Data register 27
__io uint32 DR28; ///< Data register 28
__io uint32 DR29; ///< Data register 29
__io uint32 DR30; ///< Data register 30
__io uint32 DR31; ///< Data register 31
__io uint32 DR32; ///< Data register 32
__io uint32 DR33; ///< Data register 33
__io uint32 DR34; ///< Data register 34
__io uint32 DR35; ///< Data register 35
__io uint32 DR36; ///< Data register 36
__io uint32 DR37; ///< Data register 37
__io uint32 DR38; ///< Data register 38
__io uint32 DR39; ///< Data register 39
__io uint32 DR40; ///< Data register 40
__io uint32 DR41; ///< Data register 41
__io uint32 DR42; ///< Data register 42
#endif
} bkp_reg_map;
/** Backup peripheral register map base pointer. */
#define BKP_BASE ((struct bkp_reg_map*)0x40006C00)
/** Backup peripheral device type. */
typedef struct bkp_dev {
bkp_reg_map *regs; /**< Register map */
} bkp_dev;
extern const bkp_dev *BKP;
/*
* Register bit definitions
*/
/* Data Registers */
#define BKP_DR_D 0xFFFF
/* RTC Clock Calibration Register */
#define BKP_RTCCR_ASOS_BIT 9
#define BKP_RTCCR_ASOE_BIT 8
#define BKP_RTCCR_CCO_BIT 7
#define BKP_RTCCR_ASOS BIT(BKP_RTCCR_ASOS_BIT)
#define BKP_RTCCR_ASOE BIT(BKP_RTCCR_ASOE_BIT)
#define BKP_RTCCR_CCO BIT(BKP_RTCCR_CCO_BIT)
#define BKP_RTCCR_CAL 0x7F
/* Backup control register */
#define BKP_CR_TPAL_BIT 1
#define BKP_CR_TPE_BIT 0
#define BKP_CR_TPAL BIT(BKP_CR_TPAL_BIT)
#define BKP_CR_TPE BIT(BKP_CR_TPE_BIT)
/* Backup control/status register */
#define BKP_CSR_TIF_BIT 9
#define BKP_CSR_TEF_BIT 8
#define BKP_CSR_TPIE_BIT 2
#define BKP_CSR_CTI_BIT 1
#define BKP_CSR_CTE_BIT 0
#define BKP_CSR_TIF BIT(BKP_CSR_TIF_BIT)
#define BKP_CSR_TEF BIT(BKP_CSR_TEF_BIT)
#define BKP_CSR_TPIE BIT(BKP_CSR_TPIE_BIT)
#define BKP_CSR_CTI BIT(BKP_CSR_CTI_BIT)
#define BKP_CSR_CTE BIT(BKP_CSR_CTE_BIT)
/*
* Convenience functions
*/
void bkp_init(void);
void bkp_enable_writes(void);
void bkp_disable_writes(void);
uint16 bkp_read(uint8 reg);
void bkp_write(uint8 reg, uint16 val);
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif
|
