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
|
/*
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/>.
*/
/**
* @file ext.c
* @brief EXT Driver code.
*
* @addtogroup EXT
* @{
*/
#include "ch.h"
#include "hal.h"
#if HAL_USE_EXT || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief EXT Driver initialization.
* @note This function is implicitly invoked by @p halInit(), there is
* no need to explicitly initialize the driver.
*
* @init
*/
void extInit(void) {
ext_lld_init();
}
/**
* @brief Initializes the standard part of a @p EXTDriver structure.
*
* @param[out] extp pointer to the @p EXTDriver object
*
* @init
*/
void extObjectInit(EXTDriver *extp) {
extp->state = EXT_STOP;
extp->config = NULL;
}
/**
* @brief Configures and activates the EXT peripheral.
* @post After activation all EXT channels are in the disabled state,
* use @p extChannelEnable() in order to activate them.
*
* @param[in] extp pointer to the @p EXTDriver object
* @param[in] config pointer to the @p EXTConfig object
*
* @api
*/
void extStart(EXTDriver *extp, const EXTConfig *config) {
chDbgCheck((extp != NULL) && (config != NULL), "extStart");
chSysLock();
chDbgAssert((extp->state == EXT_STOP) || (extp->state == EXT_ACTIVE),
"extStart(), #1", "invalid state");
extp->config = config;
ext_lld_start(extp);
extp->state = EXT_ACTIVE;
chSysUnlock();
}
/**
* @brief Deactivates the EXT peripheral.
*
* @param[in] extp pointer to the @p EXTDriver object
*
* @api
*/
void extStop(EXTDriver *extp) {
chDbgCheck(extp != NULL, "extStop");
chSysLock();
chDbgAssert((extp->state == EXT_STOP) || (extp->state == EXT_ACTIVE),
"extStop(), #1", "invalid state");
ext_lld_stop(extp);
extp->state = EXT_STOP;
chSysUnlock();
}
/**
* @brief Enables an EXT channel.
*
* @param[in] extp pointer to the @p EXTDriver object
* @param[in] channel channel to be enabled
*
* @api
*/
void extChannelEnable(EXTDriver *extp, expchannel_t channel) {
chDbgCheck((extp != NULL) &&
(channel < EXT_MAX_CHANNELS) &&
(extp->config->channels[channel].mode != EXT_CH_MODE_DISABLED),
"extChannelEnable");
chSysLock();
chDbgAssert(extp->state == EXT_ACTIVE,
"extChannelEnable(), #1", "invalid state");
extChannelEnableI(extp, channel);
chSysUnlock();
}
/**
* @brief Disables an EXT channel.
*
* @param[in] extp pointer to the @p EXTDriver object
* @param[in] channel channel to be disabled
*
* @api
*/
void extChannelDisable(EXTDriver *extp, expchannel_t channel) {
chDbgCheck((extp != NULL) &&
(channel < EXT_MAX_CHANNELS) &&
(extp->config->channels[channel].mode != EXT_CH_MODE_DISABLED),
"extChannelDisable");
chSysLock();
chDbgAssert(extp->state == EXT_ACTIVE,
"extChannelDisable(), #1", "invalid state");
extChannelDisableI(extp, channel);
chSysUnlock();
}
#endif /* HAL_USE_EXT */
/** @} */
|
