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
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
|
/*
ChibiOS/RT - Copyright (C) 2006-2007 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 serial.h
* @brief Serial Driver macros and structures.
*
* @addtogroup SERIAL
* @{
*/
#ifndef _SERIAL_H_
#define _SERIAL_H_
#if CH_HAL_USE_SERIAL || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/** @brief No pending conditions.*/
#define SD_NO_ERROR 0
/** @brief Connection happened.*/
#define SD_CONNECTED 1
/** @brief Disconnection happened.*/
#define SD_DISCONNECTED 2
/** @brief Parity error happened.*/
#define SD_PARITY_ERROR 4
/** @brief Framing error happened.*/
#define SD_FRAMING_ERROR 8
/** @brief Overflow happened.*/
#define SD_OVERRUN_ERROR 16
/** @brief Noise on the line.*/
#define SD_NOISE_ERROR 32
/** @brief Break detected.*/
#define SD_BREAK_DETECTED 64
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @brief Default bit rate.
* @details Configuration parameter, this is the baud rate selected for the
* default configuration.
*/
#if !defined(DEFAULT_USART_BITRATE) || defined(__DOXYGEN__)
#define SERIAL_DEFAULT_BITRATE 38400
#endif
/**
* @brief Serial buffers size.
* @details Configuration parameter, you can change the depth of the queue
* buffers depending on the requirements of your application.
* @note The default is 64 bytes for both the transmission and receive
* buffers.
*/
#if !defined(SERIAL_BUFFERS_SIZE) || defined(__DOXYGEN__)
#define SERIAL_BUFFERS_SIZE 64
#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if !CH_USE_QUEUES && !CH_USE_EVENTS
#error "Serial Driver requires CH_USE_QUEUES and CH_USE_EVENTS"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Driver state machine possible states.
*/
typedef enum {
SD_UNINIT = 0, /**< @brief Not initialized. */
SD_STOP = 1, /**< @brief Stopped. */
SD_READY = 2 /**< @brief Ready. */
} sdstate_t;
/**
* @brief Structure representing a serial driver.
*/
typedef struct _SerialDriver SerialDriver;
#include "serial_lld.h"
/**
* @brief @p SerialDriver specific methods.
*/
#define _serial_driver_methods \
_base_asynchronous_channel_methods
/**
* @brief @p SerialDriver virtual methods table.
*/
struct SerialDriverVMT {
_serial_driver_methods
};
/**
* @extends BaseAsynchronousChannel
*
* @brief Full duplex serial driver class.
* @details This class extends @p BaseAsynchronousChannel by adding physical
* I/O queues.
*/
struct _SerialDriver {
/** @brief Virtual Methods Table.*/
const struct SerialDriverVMT *vmt;
_serial_driver_data
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/**
* @brief Direct output check on a @p SerialDriver.
* @details This function bypasses the indirect access to the channel and
* checks directly the output queue. This is faster but cannot
* be used to check different channels implementations.
*
* @see chIOPutWouldBlock()
*/
#define sdPutWouldBlock(sdp) chOQIsFull(&(sdp)->oqueue)
/**
* @brief Direct input check on a @p SerialDriver.
* @details This function bypasses the indirect access to the channel and
* checks directly the input queue. This is faster but cannot
* be used to check different channels implementations.
*
* @see chIOGetWouldBlock()
*/
#define sdGetWouldBlock(sdp) chIQIsEmpty(&(sdp)->iqueue)
/**
* @brief Direct write to a @p SerialDriver.
* @details This function bypasses the indirect access to the channel and
* writes directly on the output queue. This is faster but cannot
* be used to write to different channels implementations.
*
* @see chIOPut()
*/
#define sdPut(sdp, b) chOQPut(&(sdp)->oqueue, b)
/**
* @brief Direct write to a @p SerialDriver with timeout specification.
* @details This function bypasses the indirect access to the channel and
* writes directly on the output queue. This is faster but cannot
* be used to write to different channels implementations.
*
* @see chIOPutTimeout()
*/
#define sdPutTimeout(sdp, b, t) chOQPutTimeout(&(sdp)->iqueue, b, t)
/**
* @brief Direct read from a @p SerialDriver.
* @details This function bypasses the indirect access to the channel and
* reads directly from the input queue. This is faster but cannot
* be used to read from different channels implementations.
*
* @see chIOGet()
*/
#define sdGet(sdp) chIQGet(&(sdp)->iqueue)
/**
* @brief Direct read from a @p SerialDriver with timeout specification.
* @details This function bypasses the indirect access to the channel and
* reads directly from the input queue. This is faster but cannot
* be used to read from different channels implementations.
*
* @see chIOGetTimeout()
*/
#define sdGetTimeout(sdp, t) chIQGetTimeout(&(sdp)->iqueue, t)
/**
* @brief Direct blocking write to a @p SerialDriver.
* @details This function bypasses the indirect access to the channel and
* writes directly to the output queue. This is faster but cannot
* be used to write from different channels implementations.
*
* @see chIOWriteTimeout()
*/
#define sdWrite(sdp, b, n) \
chOQWriteTimeout(&(sdp)->oqueue, b, n, TIME_INFINITE)
/**
* @brief Direct blocking write to a @p SerialDriver with timeout
* specification.
* @details This function bypasses the indirect access to the channel and
* writes directly to the output queue. This is faster but cannot
* be used to write from different channels implementations.
*
* @see chIOWriteTimeout()
*/
#define sdWriteTimeout(sdp, b, n, t) \
chOQWriteTimeout(&(sdp)->oqueue, b, n, t)
/**
* @brief Direct non-blocking write to a @p SerialDriver.
* @details This function bypasses the indirect access to the channel and
* writes directly to the output queue. This is faster but cannot
* be used to write from different channels implementations.
*
* @see chIOWriteTimeout()
*/
#define sdAsynchronousWrite(sdp, b, n) \
chOQWriteTimeout(&(sdp)->oqueue, b, n, TIME_IMMEDIATE)
/**
* @brief Direct blocking read from a @p SerialDriver.
* @details This function bypasses the indirect access to the channel and
* reads directly from the input queue. This is faster but cannot
* be used to read from different channels implementations.
*
* @see chIOReadTimeout()
*/
#define sdRead(sdp, b, n) \
chIQReadTimeout(&(sdp)->iqueue, b, n, TIME_INFINITE)
/**
* @brief Direct blocking read from a @p SerialDriver with timeout
* specification.
* @details This function bypasses the indirect access to the channel and
* reads directly from the input queue. This is faster but cannot
* be used to read from different channels implementations.
*
* @see chIOReadTimeout()
*/
#define sdReadTimeout(sdp, b, n, t) \
chIQReadTimeout(&(sdp)->iqueue, b, n, t)
/**
* @brief Direct non-blocking read from a @p SerialDriver.
* @details This function bypasses the indirect access to the channel and
* reads directly from the input queue. This is faster but cannot
* be used to read from different channels implementations.
*
* @see chIOReadTimeout()
*/
#define sdAsynchronousRead(sdp, b, n) \
chIQReadTimeout(&(sdp)->iqueue, b, n, TIME_IMMEDIATE)
/**
* @brief Returns the status change event source.
* @details The status change event source is broadcasted when the channel
* status is updated, the status flags can then be fetched and
* cheared by using @p sdGetAndClearFlags().
*
* @param[in] ip pointer to a @p SerialDriver object
* @return A pointer to an @p EventSource object.
*/
#define sdGetStatusChangeEventSource(ip) (&((ip)->vmt->sevent))
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void sdInit(void);
void sdObjectInit(SerialDriver *sdp, qnotify_t inotify, qnotify_t onotify);
void sdStart(SerialDriver *sdp, const SerialConfig *config);
void sdStop(SerialDriver *sdp);
void sdIncomingDataI(SerialDriver *sdp, uint8_t b);
msg_t sdRequestDataI(SerialDriver *sdp);
void sdAddFlagsI(SerialDriver *sdp, sdflags_t mask);
sdflags_t sdGetAndClearFlags(SerialDriver *sdp);
#ifdef __cplusplus
}
#endif
#endif /* CH_HAL_USE_SERIAL */
#endif /* _SERIAL_H_ */
/** @} */
|
