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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
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.
*/
/**
* @file STM8L/pal_lld.h
* @brief STM8L GPIO low level driver header.
*
* @addtogroup PAL
* @{
*/
#ifndef _PAL_LLD_H_
#define _PAL_LLD_H_
#if HAL_USE_PAL || defined(__DOXYGEN__)
/*===========================================================================*/
/* Unsupported modes and specific modes */
/*===========================================================================*/
#undef PAL_MODE_INPUT_PULLDOWN
/**
* @brief STM8L specific alternate push-pull slow output mode.
*/
#define PAL_MODE_OUTPUT_PUSHPULL_SLOW 16
/**
* @brief STM8L specific alternate open-drain slow output mode.
*/
#define PAL_MODE_OUTPUT_OPENDRAIN_SLOW 17
/*===========================================================================*/
/* I/O Ports Types and constants. */
/*===========================================================================*/
/**
* @brief Generic I/O ports static initializer.
* @details An instance of this structure must be passed to @p palInit() at
* system startup time in order to initialized the digital I/O
* subsystem. This represents only the initial setup, specific pads
* or whole ports can be reprogrammed at later time.
*/
typedef struct {
#if STM8L_HAS_GPIOI || defined(__DOXYGEN__)
GPIO_TypeDef P[9];
#elif STM8L_HAS_GPIOH || defined(__DOXYGEN__)
GPIO_TypeDef P[8];
#elif STM8L_HAS_GPIOG || defined(__DOXYGEN__)
GPIO_TypeDef P[7];
#else
GPIO_TypeDef P[6];
#endif
} PALConfig;
/**
* @brief Width, in bits, of an I/O port.
*/
#define PAL_IOPORTS_WIDTH 8
/**
* @brief Whole port mask.
* @brief This macro specifies all the valid bits into a port.
*/
#define PAL_WHOLE_PORT ((ioportmask_t)0xFF)
/**
* @brief Digital I/O port sized unsigned type.
*/
typedef uint8_t ioportmask_t;
/**
* @brief Digital I/O modes.
*/
typedef uint8_t iomode_t;
/**
* @brief Port Identifier.
*/
typedef GPIO_TypeDef *ioportid_t;
/*===========================================================================*/
/* I/O Ports Identifiers. */
/*===========================================================================*/
/**
* @brief GPIO ports as a whole.
*/
#define IOPORTS ((PALConfig *)0x5000)
#if STM8L_HAS_GPIOA || defined(__DOXYGEN__)
/**
* @brief GPIO port A identifier.
*/
#define IOPORT1 GPIOA
#endif
#if STM8L_HAS_GPIOB || defined(__DOXYGEN__)
/**
* @brief GPIO port B identifier.
*/
#define IOPORT2 GPIOB
#endif
#if STM8L_HAS_GPIOC || defined(__DOXYGEN__)
/**
* @brief GPIO port C identifier.
*/
#define IOPORT3 GPIOC
#endif
#if STM8L_HAS_GPIOD || defined(__DOXYGEN__)
/**
* @brief GPIO port D identifier.
*/
#define IOPORT4 GPIOD
#endif
#if STM8L_HAS_GPIOE || defined(__DOXYGEN__)
/**
* @brief GPIO port E identifier.
*/
#define IOPORT5 GPIOE
#endif
#if STM8L_HAS_GPIOF || defined(__DOXYGEN__)
/**
* @brief GPIO port F identifier.
*/
#define IOPORT6 GPIOF
#endif
#if STM8L_HAS_GPIOG || defined(__DOXYGEN__)
/**
* @brief GPIO port G identifier.
*/
#define IOPORT7 GPIOG
#endif
#if STM8L_HAS_GPIOH || defined(__DOXYGEN__)
/**
* @brief GPIO port H identifier.
*/
#define IOPORT8 GPIOH
#endif
#if STM8L_HAS_GPIOI || defined(__DOXYGEN__)
/**
* @brief GPIO port I identifier.
*/
#define IOPORT9 GPIOI
#endif
/*===========================================================================*/
/* Implementation, some of the following macros could be implemented as */
/* functions, if so please put them in pal_lld.c. */
/*===========================================================================*/
/**
* @brief Low level PAL subsystem initialization.
*
* @param[in] config architecture-dependent ports configuration
*
* @notapi
*/
#define pal_lld_init(config) (*IOPORTS = *(config))
/**
* @brief Reads the physical I/O port states.
*
* @param[in] port port identifier
* @return The port bits.
*
* @notapi
*/
#define pal_lld_readport(port) ((port)->IDR)
/**
* @brief Reads the output latch.
* @details The purpose of this function is to read back the latched output
* value.
*
* @param[in] port port identifier
* @return The latched logical states.
*
* @notapi
*/
#define pal_lld_readlatch(port) ((port)->ODR)
/**
* @brief Writes a bits mask on a I/O port.
*
* @param[in] port port identifier
* @param[in] bits bits to be written on the specified port
*
* @notapi
*/
#define pal_lld_writeport(port, bits) ((port)->ODR = (bits))
/**
* @brief Pads group mode setup.
* @details This function programs a pads group belonging to the same port
* with the specified mode.
*
* @param[in] port port identifier
* @param[in] mask group mask
* @param[in] offset group bit offset within the port
* @param[in] mode group mode
*
* @notapi
*/
#define pal_lld_setgroupmode(port, mask, offset, mode) \
_pal_lld_setgroupmode(port, mask << offset, mode)
extern ROMCONST PALConfig pal_default_config;
#ifdef __cplusplus
extern "C" {
#endif
void _pal_lld_setgroupmode(ioportid_t port,
ioportmask_t mask,
iomode_t mode);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_PAL */
#endif /* _PAL_LLD_H_ */
/** @} */
|
